1eda14cbcSMatt Macy /*
2eda14cbcSMatt Macy * CDDL HEADER START
3eda14cbcSMatt Macy *
4eda14cbcSMatt Macy * The contents of this file are subject to the terms of the
5eda14cbcSMatt Macy * Common Development and Distribution License (the "License").
6eda14cbcSMatt Macy * You may not use this file except in compliance with the License.
7eda14cbcSMatt Macy *
8eda14cbcSMatt Macy * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9eda14cbcSMatt Macy * or https://opensource.org/licenses/CDDL-1.0.
10eda14cbcSMatt Macy * See the License for the specific language governing permissions
11eda14cbcSMatt Macy * and limitations under the License.
12eda14cbcSMatt Macy *
13eda14cbcSMatt Macy * When distributing Covered Code, include this CDDL HEADER in each
14eda14cbcSMatt Macy * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15eda14cbcSMatt Macy * If applicable, add the following below this CDDL HEADER, with the
16eda14cbcSMatt Macy * fields enclosed by brackets "[]" replaced with your own identifying
17eda14cbcSMatt Macy * information: Portions Copyright [yyyy] [name of copyright owner]
18eda14cbcSMatt Macy *
19eda14cbcSMatt Macy * CDDL HEADER END
20eda14cbcSMatt Macy */
21eda14cbcSMatt Macy
22eda14cbcSMatt Macy /*
23eda14cbcSMatt Macy * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24eda14cbcSMatt Macy * Copyright (c) 2011, 2021 by Delphix. All rights reserved.
25eda14cbcSMatt Macy * Copyright 2017 Nexenta Systems, Inc.
26eda14cbcSMatt Macy * Copyright (c) 2014 Integros [integros.com]
27eda14cbcSMatt Macy * Copyright 2016 Toomas Soome <tsoome@me.com>
28eda14cbcSMatt Macy * Copyright 2017 Joyent, Inc.
29eda14cbcSMatt Macy * Copyright (c) 2017, Intel Corporation.
30eda14cbcSMatt Macy * Copyright (c) 2019, Datto Inc. All rights reserved.
31eda14cbcSMatt Macy * Copyright (c) 2021, Klara Inc.
32eda14cbcSMatt Macy * Copyright (c) 2021, 2023 Hewlett Packard Enterprise Development LP.
33eda14cbcSMatt Macy */
34eda14cbcSMatt Macy
35eda14cbcSMatt Macy #include <sys/zfs_context.h>
36eda14cbcSMatt Macy #include <sys/fm/fs/zfs.h>
37eda14cbcSMatt Macy #include <sys/spa.h>
38eda14cbcSMatt Macy #include <sys/spa_impl.h>
39eda14cbcSMatt Macy #include <sys/bpobj.h>
40eda14cbcSMatt Macy #include <sys/dmu.h>
41eda14cbcSMatt Macy #include <sys/dmu_tx.h>
42eda14cbcSMatt Macy #include <sys/dsl_dir.h>
437877fdebSMatt Macy #include <sys/vdev_impl.h>
44eda14cbcSMatt Macy #include <sys/vdev_rebuild.h>
45eda14cbcSMatt Macy #include <sys/vdev_draid.h>
46eda14cbcSMatt Macy #include <sys/uberblock_impl.h>
47eda14cbcSMatt Macy #include <sys/metaslab.h>
48eda14cbcSMatt Macy #include <sys/metaslab_impl.h>
49eda14cbcSMatt Macy #include <sys/space_map.h>
50eda14cbcSMatt Macy #include <sys/space_reftree.h>
51eda14cbcSMatt Macy #include <sys/zio.h>
52eda14cbcSMatt Macy #include <sys/zap.h>
53eda14cbcSMatt Macy #include <sys/fs/zfs.h>
54eda14cbcSMatt Macy #include <sys/arc.h>
557877fdebSMatt Macy #include <sys/zil.h>
56eda14cbcSMatt Macy #include <sys/dsl_scan.h>
57eda14cbcSMatt Macy #include <sys/vdev_raidz.h>
58eda14cbcSMatt Macy #include <sys/abd.h>
59eda14cbcSMatt Macy #include <sys/vdev_initialize.h>
60eda14cbcSMatt Macy #include <sys/vdev_trim.h>
61eda14cbcSMatt Macy #include <sys/vdev_raidz.h>
62eda14cbcSMatt Macy #include <sys/zvol.h>
63eda14cbcSMatt Macy #include <sys/zfs_ratelimit.h>
64eda14cbcSMatt Macy #include "zfs_prop.h"
65eda14cbcSMatt Macy
66eda14cbcSMatt Macy /*
67eda14cbcSMatt Macy * One metaslab from each (normal-class) vdev is used by the ZIL. These are
68eda14cbcSMatt Macy * called "embedded slog metaslabs", are referenced by vdev_log_mg, and are
69eda14cbcSMatt Macy * part of the spa_embedded_log_class. The metaslab with the most free space
70eda14cbcSMatt Macy * in each vdev is selected for this purpose when the pool is opened (or a
71eda14cbcSMatt Macy * vdev is added). See vdev_metaslab_init().
72eda14cbcSMatt Macy *
73eda14cbcSMatt Macy * Log blocks can be allocated from the following locations. Each one is tried
74eda14cbcSMatt Macy * in order until the allocation succeeds:
75eda14cbcSMatt Macy * 1. dedicated log vdevs, aka "slog" (spa_log_class)
76eda14cbcSMatt Macy * 2. embedded slog metaslabs (spa_embedded_log_class)
77eda14cbcSMatt Macy * 3. other metaslabs in normal vdevs (spa_normal_class)
78eda14cbcSMatt Macy *
79eda14cbcSMatt Macy * zfs_embedded_slog_min_ms disables the embedded slog if there are fewer
80eda14cbcSMatt Macy * than this number of metaslabs in the vdev. This ensures that we don't set
81eda14cbcSMatt Macy * aside an unreasonable amount of space for the ZIL. If set to less than
82eda14cbcSMatt Macy * 1 << (spa_slop_shift + 1), on small pools the usable space may be reduced
83eda14cbcSMatt Macy * (by more than 1<<spa_slop_shift) due to the embedded slog metaslab.
84eda14cbcSMatt Macy */
85eda14cbcSMatt Macy static uint_t zfs_embedded_slog_min_ms = 64;
86eda14cbcSMatt Macy
87eda14cbcSMatt Macy /* default target for number of metaslabs per top-level vdev */
88eda14cbcSMatt Macy static uint_t zfs_vdev_default_ms_count = 200;
89eda14cbcSMatt Macy
90eda14cbcSMatt Macy /* minimum number of metaslabs per top-level vdev */
91eda14cbcSMatt Macy static uint_t zfs_vdev_min_ms_count = 16;
92eda14cbcSMatt Macy
93eda14cbcSMatt Macy /* practical upper limit of total metaslabs per top-level vdev */
94eda14cbcSMatt Macy static uint_t zfs_vdev_ms_count_limit = 1ULL << 17;
95eda14cbcSMatt Macy
96eda14cbcSMatt Macy /* lower limit for metaslab size (512M) */
97eda14cbcSMatt Macy static uint_t zfs_vdev_default_ms_shift = 29;
98eda14cbcSMatt Macy
99eda14cbcSMatt Macy /* upper limit for metaslab size (16G) */
100eda14cbcSMatt Macy static uint_t zfs_vdev_max_ms_shift = 34;
101eda14cbcSMatt Macy
102eda14cbcSMatt Macy int vdev_validate_skip = B_FALSE;
103eda14cbcSMatt Macy
104eda14cbcSMatt Macy /*
105eda14cbcSMatt Macy * Since the DTL space map of a vdev is not expected to have a lot of
106eda14cbcSMatt Macy * entries, we default its block size to 4K.
107eda14cbcSMatt Macy */
108eda14cbcSMatt Macy int zfs_vdev_dtl_sm_blksz = (1 << 12);
109eda14cbcSMatt Macy
110eda14cbcSMatt Macy /*
111eda14cbcSMatt Macy * Rate limit slow IO (delay) events to this many per second.
112eda14cbcSMatt Macy */
113eda14cbcSMatt Macy static unsigned int zfs_slow_io_events_per_second = 20;
114eda14cbcSMatt Macy
115eda14cbcSMatt Macy /*
116eda14cbcSMatt Macy * Rate limit checksum events after this many checksum errors per second.
117eda14cbcSMatt Macy */
118eda14cbcSMatt Macy static unsigned int zfs_checksum_events_per_second = 20;
119eda14cbcSMatt Macy
120eda14cbcSMatt Macy /*
121eda14cbcSMatt Macy * Ignore errors during scrub/resilver. Allows to work around resilver
122eda14cbcSMatt Macy * upon import when there are pool errors.
123eda14cbcSMatt Macy */
124eda14cbcSMatt Macy static int zfs_scan_ignore_errors = 0;
125eda14cbcSMatt Macy
126eda14cbcSMatt Macy /*
127eda14cbcSMatt Macy * vdev-wide space maps that have lots of entries written to them at
128eda14cbcSMatt Macy * the end of each transaction can benefit from a higher I/O bandwidth
129eda14cbcSMatt Macy * (e.g. vdev_obsolete_sm), thus we default their block size to 128K.
130eda14cbcSMatt Macy */
131eda14cbcSMatt Macy int zfs_vdev_standard_sm_blksz = (1 << 17);
132eda14cbcSMatt Macy
133eda14cbcSMatt Macy /*
134eda14cbcSMatt Macy * Tunable parameter for debugging or performance analysis. Setting this
135eda14cbcSMatt Macy * will cause pool corruption on power loss if a volatile out-of-order
136eda14cbcSMatt Macy * write cache is enabled.
137eda14cbcSMatt Macy */
138eda14cbcSMatt Macy int zfs_nocacheflush = 0;
139eda14cbcSMatt Macy
140eda14cbcSMatt Macy /*
141eda14cbcSMatt Macy * Maximum and minimum ashift values that can be automatically set based on
142eda14cbcSMatt Macy * vdev's physical ashift (disk's physical sector size). While ASHIFT_MAX
143eda14cbcSMatt Macy * is higher than the maximum value, it is intentionally limited here to not
144eda14cbcSMatt Macy * excessively impact pool space efficiency. Higher ashift values may still
145eda14cbcSMatt Macy * be forced by vdev logical ashift or by user via ashift property, but won't
146eda14cbcSMatt Macy * be set automatically as a performance optimization.
147eda14cbcSMatt Macy */
148eda14cbcSMatt Macy uint_t zfs_vdev_max_auto_ashift = 14;
149eda14cbcSMatt Macy uint_t zfs_vdev_min_auto_ashift = ASHIFT_MIN;
150eda14cbcSMatt Macy
151eda14cbcSMatt Macy void
vdev_dbgmsg(vdev_t * vd,const char * fmt,...)152eda14cbcSMatt Macy vdev_dbgmsg(vdev_t *vd, const char *fmt, ...)
153eda14cbcSMatt Macy {
154eda14cbcSMatt Macy va_list adx;
155eda14cbcSMatt Macy char buf[256];
156eda14cbcSMatt Macy
157eda14cbcSMatt Macy va_start(adx, fmt);
158eda14cbcSMatt Macy (void) vsnprintf(buf, sizeof (buf), fmt, adx);
159eda14cbcSMatt Macy va_end(adx);
160eda14cbcSMatt Macy
161eda14cbcSMatt Macy if (vd->vdev_path != NULL) {
162eda14cbcSMatt Macy zfs_dbgmsg("%s vdev '%s': %s", vd->vdev_ops->vdev_op_type,
163eda14cbcSMatt Macy vd->vdev_path, buf);
164eda14cbcSMatt Macy } else {
165eda14cbcSMatt Macy zfs_dbgmsg("%s-%llu vdev (guid %llu): %s",
166eda14cbcSMatt Macy vd->vdev_ops->vdev_op_type,
167eda14cbcSMatt Macy (u_longlong_t)vd->vdev_id,
168eda14cbcSMatt Macy (u_longlong_t)vd->vdev_guid, buf);
169eda14cbcSMatt Macy }
170eda14cbcSMatt Macy }
171eda14cbcSMatt Macy
172eda14cbcSMatt Macy void
vdev_dbgmsg_print_tree(vdev_t * vd,int indent)173eda14cbcSMatt Macy vdev_dbgmsg_print_tree(vdev_t *vd, int indent)
174eda14cbcSMatt Macy {
175eda14cbcSMatt Macy char state[20];
176eda14cbcSMatt Macy
177eda14cbcSMatt Macy if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops) {
178eda14cbcSMatt Macy zfs_dbgmsg("%*svdev %llu: %s", indent, "",
179eda14cbcSMatt Macy (u_longlong_t)vd->vdev_id,
180eda14cbcSMatt Macy vd->vdev_ops->vdev_op_type);
181eda14cbcSMatt Macy return;
182eda14cbcSMatt Macy }
183eda14cbcSMatt Macy
184eda14cbcSMatt Macy switch (vd->vdev_state) {
185eda14cbcSMatt Macy case VDEV_STATE_UNKNOWN:
186eda14cbcSMatt Macy (void) snprintf(state, sizeof (state), "unknown");
187eda14cbcSMatt Macy break;
188eda14cbcSMatt Macy case VDEV_STATE_CLOSED:
189eda14cbcSMatt Macy (void) snprintf(state, sizeof (state), "closed");
190eda14cbcSMatt Macy break;
191eda14cbcSMatt Macy case VDEV_STATE_OFFLINE:
192eda14cbcSMatt Macy (void) snprintf(state, sizeof (state), "offline");
193eda14cbcSMatt Macy break;
194eda14cbcSMatt Macy case VDEV_STATE_REMOVED:
195eda14cbcSMatt Macy (void) snprintf(state, sizeof (state), "removed");
196eda14cbcSMatt Macy break;
197eda14cbcSMatt Macy case VDEV_STATE_CANT_OPEN:
1987877fdebSMatt Macy (void) snprintf(state, sizeof (state), "can't open");
1997877fdebSMatt Macy break;
200eda14cbcSMatt Macy case VDEV_STATE_FAULTED:
201eda14cbcSMatt Macy (void) snprintf(state, sizeof (state), "faulted");
202eda14cbcSMatt Macy break;
203eda14cbcSMatt Macy case VDEV_STATE_DEGRADED:
204eda14cbcSMatt Macy (void) snprintf(state, sizeof (state), "degraded");
205eda14cbcSMatt Macy break;
206eda14cbcSMatt Macy case VDEV_STATE_HEALTHY:
207eda14cbcSMatt Macy (void) snprintf(state, sizeof (state), "healthy");
208eda14cbcSMatt Macy break;
209eda14cbcSMatt Macy default:
210eda14cbcSMatt Macy (void) snprintf(state, sizeof (state), "<state %u>",
211eda14cbcSMatt Macy (uint_t)vd->vdev_state);
212eda14cbcSMatt Macy }
213eda14cbcSMatt Macy
214eda14cbcSMatt Macy zfs_dbgmsg("%*svdev %u: %s%s, guid: %llu, path: %s, %s", indent,
215eda14cbcSMatt Macy "", (int)vd->vdev_id, vd->vdev_ops->vdev_op_type,
216eda14cbcSMatt Macy vd->vdev_islog ? " (log)" : "",
217eda14cbcSMatt Macy (u_longlong_t)vd->vdev_guid,
218eda14cbcSMatt Macy vd->vdev_path ? vd->vdev_path : "N/A", state);
219eda14cbcSMatt Macy
220eda14cbcSMatt Macy for (uint64_t i = 0; i < vd->vdev_children; i++)
221eda14cbcSMatt Macy vdev_dbgmsg_print_tree(vd->vdev_child[i], indent + 2);
222eda14cbcSMatt Macy }
223eda14cbcSMatt Macy
224eda14cbcSMatt Macy /*
225eda14cbcSMatt Macy * Virtual device management.
226eda14cbcSMatt Macy */
227eda14cbcSMatt Macy
2287877fdebSMatt Macy static vdev_ops_t *const vdev_ops_table[] = {
2297877fdebSMatt Macy &vdev_root_ops,
230eda14cbcSMatt Macy &vdev_raidz_ops,
2317877fdebSMatt Macy &vdev_draid_ops,
2327877fdebSMatt Macy &vdev_draid_spare_ops,
233eda14cbcSMatt Macy &vdev_mirror_ops,
234eda14cbcSMatt Macy &vdev_replacing_ops,
235eda14cbcSMatt Macy &vdev_spare_ops,
236eda14cbcSMatt Macy &vdev_disk_ops,
2377877fdebSMatt Macy &vdev_file_ops,
238eda14cbcSMatt Macy &vdev_missing_ops,
239eda14cbcSMatt Macy &vdev_hole_ops,
240eda14cbcSMatt Macy &vdev_indirect_ops,
241eda14cbcSMatt Macy NULL
242eda14cbcSMatt Macy };
243eda14cbcSMatt Macy
244eda14cbcSMatt Macy /*
245eda14cbcSMatt Macy * Given a vdev type, return the appropriate ops vector.
246eda14cbcSMatt Macy */
247eda14cbcSMatt Macy static vdev_ops_t *
vdev_getops(const char * type)248eda14cbcSMatt Macy vdev_getops(const char *type)
249eda14cbcSMatt Macy {
250eda14cbcSMatt Macy vdev_ops_t *ops, *const *opspp;
251eda14cbcSMatt Macy
252eda14cbcSMatt Macy for (opspp = vdev_ops_table; (ops = *opspp) != NULL; opspp++)
253eda14cbcSMatt Macy if (strcmp(ops->vdev_op_type, type) == 0)
254eda14cbcSMatt Macy break;
255eda14cbcSMatt Macy
256eda14cbcSMatt Macy return (ops);
257eda14cbcSMatt Macy }
258eda14cbcSMatt Macy
259eda14cbcSMatt Macy /*
260eda14cbcSMatt Macy * Given a vdev and a metaslab class, find which metaslab group we're
261eda14cbcSMatt Macy * interested in. All vdevs may belong to two different metaslab classes.
262eda14cbcSMatt Macy * Dedicated slog devices use only the primary metaslab group, rather than a
263eda14cbcSMatt Macy * separate log group. For embedded slogs, the vdev_log_mg will be non-NULL.
264eda14cbcSMatt Macy */
265eda14cbcSMatt Macy metaslab_group_t *
vdev_get_mg(vdev_t * vd,metaslab_class_t * mc)266eda14cbcSMatt Macy vdev_get_mg(vdev_t *vd, metaslab_class_t *mc)
267eda14cbcSMatt Macy {
268eda14cbcSMatt Macy if (mc == spa_embedded_log_class(vd->vdev_spa) &&
269eda14cbcSMatt Macy vd->vdev_log_mg != NULL)
270eda14cbcSMatt Macy return (vd->vdev_log_mg);
271eda14cbcSMatt Macy else
2727877fdebSMatt Macy return (vd->vdev_mg);
2737877fdebSMatt Macy }
2747877fdebSMatt Macy
2757877fdebSMatt Macy void
vdev_default_xlate(vdev_t * vd,const range_seg64_t * logical_rs,range_seg64_t * physical_rs,range_seg64_t * remain_rs)2767877fdebSMatt Macy vdev_default_xlate(vdev_t *vd, const range_seg64_t *logical_rs,
2777877fdebSMatt Macy range_seg64_t *physical_rs, range_seg64_t *remain_rs)
278eda14cbcSMatt Macy {
279eda14cbcSMatt Macy (void) vd, (void) remain_rs;
280eda14cbcSMatt Macy
281eda14cbcSMatt Macy physical_rs->rs_start = logical_rs->rs_start;
282eda14cbcSMatt Macy physical_rs->rs_end = logical_rs->rs_end;
283eda14cbcSMatt Macy }
284eda14cbcSMatt Macy
285eda14cbcSMatt Macy /*
286eda14cbcSMatt Macy * Derive the enumerated allocation bias from string input.
287eda14cbcSMatt Macy * String origin is either the per-vdev zap or zpool(8).
288eda14cbcSMatt Macy */
289eda14cbcSMatt Macy static vdev_alloc_bias_t
vdev_derive_alloc_bias(const char * bias)290eda14cbcSMatt Macy vdev_derive_alloc_bias(const char *bias)
291eda14cbcSMatt Macy {
292eda14cbcSMatt Macy vdev_alloc_bias_t alloc_bias = VDEV_BIAS_NONE;
293eda14cbcSMatt Macy
294eda14cbcSMatt Macy if (strcmp(bias, VDEV_ALLOC_BIAS_LOG) == 0)
295eda14cbcSMatt Macy alloc_bias = VDEV_BIAS_LOG;
296eda14cbcSMatt Macy else if (strcmp(bias, VDEV_ALLOC_BIAS_SPECIAL) == 0)
297eda14cbcSMatt Macy alloc_bias = VDEV_BIAS_SPECIAL;
298eda14cbcSMatt Macy else if (strcmp(bias, VDEV_ALLOC_BIAS_DEDUP) == 0)
299eda14cbcSMatt Macy alloc_bias = VDEV_BIAS_DEDUP;
300eda14cbcSMatt Macy
301eda14cbcSMatt Macy return (alloc_bias);
302eda14cbcSMatt Macy }
3037877fdebSMatt Macy
304eda14cbcSMatt Macy /*
305eda14cbcSMatt Macy * Default asize function: return the MAX of psize with the asize of
306eda14cbcSMatt Macy * all children. This is what's used by anything other than RAID-Z.
307eda14cbcSMatt Macy */
308eda14cbcSMatt Macy uint64_t
vdev_default_asize(vdev_t * vd,uint64_t psize,uint64_t txg)309eda14cbcSMatt Macy vdev_default_asize(vdev_t *vd, uint64_t psize, uint64_t txg)
310eda14cbcSMatt Macy {
311eda14cbcSMatt Macy uint64_t asize = P2ROUNDUP(psize, 1ULL << vd->vdev_top->vdev_ashift);
312eda14cbcSMatt Macy uint64_t csize;
313eda14cbcSMatt Macy
314eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++) {
3157877fdebSMatt Macy csize = vdev_psize_to_asize_txg(vd->vdev_child[c], psize, txg);
3167877fdebSMatt Macy asize = MAX(asize, csize);
3177877fdebSMatt Macy }
3187877fdebSMatt Macy
3197877fdebSMatt Macy return (asize);
3207877fdebSMatt Macy }
3217877fdebSMatt Macy
3227877fdebSMatt Macy uint64_t
vdev_default_min_asize(vdev_t * vd)3237877fdebSMatt Macy vdev_default_min_asize(vdev_t *vd)
3247877fdebSMatt Macy {
3257877fdebSMatt Macy return (vd->vdev_min_asize);
3267877fdebSMatt Macy }
3277877fdebSMatt Macy
3287877fdebSMatt Macy /*
3297877fdebSMatt Macy * Get the minimum allocatable size. We define the allocatable size as
3307877fdebSMatt Macy * the vdev's asize rounded to the nearest metaslab. This allows us to
3317877fdebSMatt Macy * replace or attach devices which don't have the same physical size but
3327877fdebSMatt Macy * can still satisfy the same number of allocations.
3337877fdebSMatt Macy */
3347877fdebSMatt Macy uint64_t
vdev_get_min_asize(vdev_t * vd)3357877fdebSMatt Macy vdev_get_min_asize(vdev_t *vd)
3367877fdebSMatt Macy {
3377877fdebSMatt Macy vdev_t *pvd = vd->vdev_parent;
3387877fdebSMatt Macy
3397877fdebSMatt Macy /*
3407877fdebSMatt Macy * If our parent is NULL (inactive spare or cache) or is the root,
3417877fdebSMatt Macy * just return our own asize.
3427877fdebSMatt Macy */
3437877fdebSMatt Macy if (pvd == NULL)
3447877fdebSMatt Macy return (vd->vdev_asize);
3457877fdebSMatt Macy
3467877fdebSMatt Macy /*
3477877fdebSMatt Macy * The top-level vdev just returns the allocatable size rounded
3487877fdebSMatt Macy * to the nearest metaslab.
3497877fdebSMatt Macy */
3507877fdebSMatt Macy if (vd == vd->vdev_top)
3517877fdebSMatt Macy return (P2ALIGN(vd->vdev_asize, 1ULL << vd->vdev_ms_shift));
3527877fdebSMatt Macy
3537877fdebSMatt Macy return (pvd->vdev_ops->vdev_op_min_asize(pvd));
3547877fdebSMatt Macy }
3557877fdebSMatt Macy
3567877fdebSMatt Macy void
vdev_set_min_asize(vdev_t * vd)357eda14cbcSMatt Macy vdev_set_min_asize(vdev_t *vd)
358eda14cbcSMatt Macy {
359eda14cbcSMatt Macy vd->vdev_min_asize = vdev_get_min_asize(vd);
360eda14cbcSMatt Macy
361eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
362eda14cbcSMatt Macy vdev_set_min_asize(vd->vdev_child[c]);
363eda14cbcSMatt Macy }
364eda14cbcSMatt Macy
365eda14cbcSMatt Macy /*
366eda14cbcSMatt Macy * Get the minimal allocation size for the top-level vdev.
367eda14cbcSMatt Macy */
368eda14cbcSMatt Macy uint64_t
vdev_get_min_alloc(vdev_t * vd)369eda14cbcSMatt Macy vdev_get_min_alloc(vdev_t *vd)
370eda14cbcSMatt Macy {
371eda14cbcSMatt Macy uint64_t min_alloc = 1ULL << vd->vdev_ashift;
372eda14cbcSMatt Macy
373eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_min_alloc != NULL)
374eda14cbcSMatt Macy min_alloc = vd->vdev_ops->vdev_op_min_alloc(vd);
375eda14cbcSMatt Macy
376eda14cbcSMatt Macy return (min_alloc);
377eda14cbcSMatt Macy }
378eda14cbcSMatt Macy
379eda14cbcSMatt Macy /*
380eda14cbcSMatt Macy * Get the parity level for a top-level vdev.
381eda14cbcSMatt Macy */
382eda14cbcSMatt Macy uint64_t
vdev_get_nparity(vdev_t * vd)383eda14cbcSMatt Macy vdev_get_nparity(vdev_t *vd)
384eda14cbcSMatt Macy {
385eda14cbcSMatt Macy uint64_t nparity = 0;
386eda14cbcSMatt Macy
387eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_nparity != NULL)
388eda14cbcSMatt Macy nparity = vd->vdev_ops->vdev_op_nparity(vd);
389eda14cbcSMatt Macy
390eda14cbcSMatt Macy return (nparity);
391eda14cbcSMatt Macy }
392eda14cbcSMatt Macy
393eda14cbcSMatt Macy static int
vdev_prop_get_int(vdev_t * vd,vdev_prop_t prop,uint64_t * value)394eda14cbcSMatt Macy vdev_prop_get_int(vdev_t *vd, vdev_prop_t prop, uint64_t *value)
395eda14cbcSMatt Macy {
396eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
397eda14cbcSMatt Macy objset_t *mos = spa->spa_meta_objset;
398eda14cbcSMatt Macy uint64_t objid;
399eda14cbcSMatt Macy int err;
400eda14cbcSMatt Macy
401eda14cbcSMatt Macy if (vd->vdev_root_zap != 0) {
402eda14cbcSMatt Macy objid = vd->vdev_root_zap;
403eda14cbcSMatt Macy } else if (vd->vdev_top_zap != 0) {
404eda14cbcSMatt Macy objid = vd->vdev_top_zap;
405eda14cbcSMatt Macy } else if (vd->vdev_leaf_zap != 0) {
406eda14cbcSMatt Macy objid = vd->vdev_leaf_zap;
407eda14cbcSMatt Macy } else {
408eda14cbcSMatt Macy return (EINVAL);
409eda14cbcSMatt Macy }
410eda14cbcSMatt Macy
411eda14cbcSMatt Macy err = zap_lookup(mos, objid, vdev_prop_to_name(prop),
412eda14cbcSMatt Macy sizeof (uint64_t), 1, value);
413eda14cbcSMatt Macy
414eda14cbcSMatt Macy if (err == ENOENT)
415eda14cbcSMatt Macy *value = vdev_prop_default_numeric(prop);
416eda14cbcSMatt Macy
417eda14cbcSMatt Macy return (err);
418eda14cbcSMatt Macy }
419eda14cbcSMatt Macy
420eda14cbcSMatt Macy /*
421eda14cbcSMatt Macy * Get the number of data disks for a top-level vdev.
422eda14cbcSMatt Macy */
423eda14cbcSMatt Macy uint64_t
vdev_get_ndisks(vdev_t * vd)424eda14cbcSMatt Macy vdev_get_ndisks(vdev_t *vd)
425eda14cbcSMatt Macy {
426eda14cbcSMatt Macy uint64_t ndisks = 1;
427eda14cbcSMatt Macy
428eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_ndisks != NULL)
429eda14cbcSMatt Macy ndisks = vd->vdev_ops->vdev_op_ndisks(vd);
430eda14cbcSMatt Macy
431eda14cbcSMatt Macy return (ndisks);
432eda14cbcSMatt Macy }
433eda14cbcSMatt Macy
434eda14cbcSMatt Macy vdev_t *
vdev_lookup_top(spa_t * spa,uint64_t vdev)435eda14cbcSMatt Macy vdev_lookup_top(spa_t *spa, uint64_t vdev)
436eda14cbcSMatt Macy {
437eda14cbcSMatt Macy vdev_t *rvd = spa->spa_root_vdev;
438eda14cbcSMatt Macy
439eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
440eda14cbcSMatt Macy
441eda14cbcSMatt Macy if (vdev < rvd->vdev_children) {
442eda14cbcSMatt Macy ASSERT(rvd->vdev_child[vdev] != NULL);
443eda14cbcSMatt Macy return (rvd->vdev_child[vdev]);
444eda14cbcSMatt Macy }
445eda14cbcSMatt Macy
446eda14cbcSMatt Macy return (NULL);
447eda14cbcSMatt Macy }
448eda14cbcSMatt Macy
449eda14cbcSMatt Macy vdev_t *
vdev_lookup_by_guid(vdev_t * vd,uint64_t guid)450eda14cbcSMatt Macy vdev_lookup_by_guid(vdev_t *vd, uint64_t guid)
451eda14cbcSMatt Macy {
452eda14cbcSMatt Macy vdev_t *mvd;
453eda14cbcSMatt Macy
454eda14cbcSMatt Macy if (vd->vdev_guid == guid)
455eda14cbcSMatt Macy return (vd);
456eda14cbcSMatt Macy
457eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
458eda14cbcSMatt Macy if ((mvd = vdev_lookup_by_guid(vd->vdev_child[c], guid)) !=
459eda14cbcSMatt Macy NULL)
460eda14cbcSMatt Macy return (mvd);
461eda14cbcSMatt Macy
462eda14cbcSMatt Macy return (NULL);
463eda14cbcSMatt Macy }
464eda14cbcSMatt Macy
465eda14cbcSMatt Macy static int
vdev_count_leaves_impl(vdev_t * vd)466eda14cbcSMatt Macy vdev_count_leaves_impl(vdev_t *vd)
467eda14cbcSMatt Macy {
468eda14cbcSMatt Macy int n = 0;
469eda14cbcSMatt Macy
470eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf)
471eda14cbcSMatt Macy return (1);
472eda14cbcSMatt Macy
473eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
474eda14cbcSMatt Macy n += vdev_count_leaves_impl(vd->vdev_child[c]);
475eda14cbcSMatt Macy
476eda14cbcSMatt Macy return (n);
477eda14cbcSMatt Macy }
478eda14cbcSMatt Macy
479eda14cbcSMatt Macy int
vdev_count_leaves(spa_t * spa)480eda14cbcSMatt Macy vdev_count_leaves(spa_t *spa)
481eda14cbcSMatt Macy {
482eda14cbcSMatt Macy int rc;
483eda14cbcSMatt Macy
484eda14cbcSMatt Macy spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
485eda14cbcSMatt Macy rc = vdev_count_leaves_impl(spa->spa_root_vdev);
486eda14cbcSMatt Macy spa_config_exit(spa, SCL_VDEV, FTAG);
487eda14cbcSMatt Macy
488eda14cbcSMatt Macy return (rc);
489eda14cbcSMatt Macy }
490eda14cbcSMatt Macy
491eda14cbcSMatt Macy void
vdev_add_child(vdev_t * pvd,vdev_t * cvd)492eda14cbcSMatt Macy vdev_add_child(vdev_t *pvd, vdev_t *cvd)
493eda14cbcSMatt Macy {
494eda14cbcSMatt Macy size_t oldsize, newsize;
495eda14cbcSMatt Macy uint64_t id = cvd->vdev_id;
496eda14cbcSMatt Macy vdev_t **newchild;
497eda14cbcSMatt Macy
498eda14cbcSMatt Macy ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
499eda14cbcSMatt Macy ASSERT(cvd->vdev_parent == NULL);
500eda14cbcSMatt Macy
501eda14cbcSMatt Macy cvd->vdev_parent = pvd;
502eda14cbcSMatt Macy
503eda14cbcSMatt Macy if (pvd == NULL)
504eda14cbcSMatt Macy return;
505eda14cbcSMatt Macy
506eda14cbcSMatt Macy ASSERT(id >= pvd->vdev_children || pvd->vdev_child[id] == NULL);
507eda14cbcSMatt Macy
508eda14cbcSMatt Macy oldsize = pvd->vdev_children * sizeof (vdev_t *);
509eda14cbcSMatt Macy pvd->vdev_children = MAX(pvd->vdev_children, id + 1);
510eda14cbcSMatt Macy newsize = pvd->vdev_children * sizeof (vdev_t *);
511eda14cbcSMatt Macy
512eda14cbcSMatt Macy newchild = kmem_alloc(newsize, KM_SLEEP);
513eda14cbcSMatt Macy if (pvd->vdev_child != NULL) {
514eda14cbcSMatt Macy memcpy(newchild, pvd->vdev_child, oldsize);
515eda14cbcSMatt Macy kmem_free(pvd->vdev_child, oldsize);
516eda14cbcSMatt Macy }
517eda14cbcSMatt Macy
518eda14cbcSMatt Macy pvd->vdev_child = newchild;
519eda14cbcSMatt Macy pvd->vdev_child[id] = cvd;
520eda14cbcSMatt Macy
521eda14cbcSMatt Macy cvd->vdev_top = (pvd->vdev_top ? pvd->vdev_top: cvd);
522eda14cbcSMatt Macy ASSERT(cvd->vdev_top->vdev_parent->vdev_parent == NULL);
523eda14cbcSMatt Macy
524eda14cbcSMatt Macy /*
525eda14cbcSMatt Macy * Walk up all ancestors to update guid sum.
526eda14cbcSMatt Macy */
527eda14cbcSMatt Macy for (; pvd != NULL; pvd = pvd->vdev_parent)
528eda14cbcSMatt Macy pvd->vdev_guid_sum += cvd->vdev_guid_sum;
529eda14cbcSMatt Macy
530eda14cbcSMatt Macy if (cvd->vdev_ops->vdev_op_leaf) {
531eda14cbcSMatt Macy list_insert_head(&cvd->vdev_spa->spa_leaf_list, cvd);
532eda14cbcSMatt Macy cvd->vdev_spa->spa_leaf_list_gen++;
533eda14cbcSMatt Macy }
534eda14cbcSMatt Macy }
535eda14cbcSMatt Macy
536eda14cbcSMatt Macy void
vdev_remove_child(vdev_t * pvd,vdev_t * cvd)537eda14cbcSMatt Macy vdev_remove_child(vdev_t *pvd, vdev_t *cvd)
538eda14cbcSMatt Macy {
539eda14cbcSMatt Macy int c;
540eda14cbcSMatt Macy uint_t id = cvd->vdev_id;
541eda14cbcSMatt Macy
542eda14cbcSMatt Macy ASSERT(cvd->vdev_parent == pvd);
543eda14cbcSMatt Macy
544eda14cbcSMatt Macy if (pvd == NULL)
545eda14cbcSMatt Macy return;
546eda14cbcSMatt Macy
547eda14cbcSMatt Macy ASSERT(id < pvd->vdev_children);
548eda14cbcSMatt Macy ASSERT(pvd->vdev_child[id] == cvd);
549eda14cbcSMatt Macy
550eda14cbcSMatt Macy pvd->vdev_child[id] = NULL;
551eda14cbcSMatt Macy cvd->vdev_parent = NULL;
552eda14cbcSMatt Macy
553eda14cbcSMatt Macy for (c = 0; c < pvd->vdev_children; c++)
554eda14cbcSMatt Macy if (pvd->vdev_child[c])
555eda14cbcSMatt Macy break;
556eda14cbcSMatt Macy
557eda14cbcSMatt Macy if (c == pvd->vdev_children) {
558eda14cbcSMatt Macy kmem_free(pvd->vdev_child, c * sizeof (vdev_t *));
559eda14cbcSMatt Macy pvd->vdev_child = NULL;
560eda14cbcSMatt Macy pvd->vdev_children = 0;
561eda14cbcSMatt Macy }
562eda14cbcSMatt Macy
563eda14cbcSMatt Macy if (cvd->vdev_ops->vdev_op_leaf) {
564eda14cbcSMatt Macy spa_t *spa = cvd->vdev_spa;
565eda14cbcSMatt Macy list_remove(&spa->spa_leaf_list, cvd);
566eda14cbcSMatt Macy spa->spa_leaf_list_gen++;
567eda14cbcSMatt Macy }
568eda14cbcSMatt Macy
569eda14cbcSMatt Macy /*
570eda14cbcSMatt Macy * Walk up all ancestors to update guid sum.
571eda14cbcSMatt Macy */
572eda14cbcSMatt Macy for (; pvd != NULL; pvd = pvd->vdev_parent)
573eda14cbcSMatt Macy pvd->vdev_guid_sum -= cvd->vdev_guid_sum;
574eda14cbcSMatt Macy }
575eda14cbcSMatt Macy
576eda14cbcSMatt Macy /*
577eda14cbcSMatt Macy * Remove any holes in the child array.
578eda14cbcSMatt Macy */
579eda14cbcSMatt Macy void
vdev_compact_children(vdev_t * pvd)580eda14cbcSMatt Macy vdev_compact_children(vdev_t *pvd)
581eda14cbcSMatt Macy {
582eda14cbcSMatt Macy vdev_t **newchild, *cvd;
583eda14cbcSMatt Macy int oldc = pvd->vdev_children;
584eda14cbcSMatt Macy int newc;
585eda14cbcSMatt Macy
586eda14cbcSMatt Macy ASSERT(spa_config_held(pvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
587eda14cbcSMatt Macy
588eda14cbcSMatt Macy if (oldc == 0)
589eda14cbcSMatt Macy return;
590eda14cbcSMatt Macy
591eda14cbcSMatt Macy for (int c = newc = 0; c < oldc; c++)
592eda14cbcSMatt Macy if (pvd->vdev_child[c])
593eda14cbcSMatt Macy newc++;
594eda14cbcSMatt Macy
595eda14cbcSMatt Macy if (newc > 0) {
596eda14cbcSMatt Macy newchild = kmem_zalloc(newc * sizeof (vdev_t *), KM_SLEEP);
597eda14cbcSMatt Macy
598eda14cbcSMatt Macy for (int c = newc = 0; c < oldc; c++) {
5997877fdebSMatt Macy if ((cvd = pvd->vdev_child[c]) != NULL) {
600eda14cbcSMatt Macy newchild[newc] = cvd;
601eda14cbcSMatt Macy cvd->vdev_id = newc++;
602eda14cbcSMatt Macy }
603eda14cbcSMatt Macy }
604eda14cbcSMatt Macy } else {
605eda14cbcSMatt Macy newchild = NULL;
606eda14cbcSMatt Macy }
607eda14cbcSMatt Macy
608eda14cbcSMatt Macy kmem_free(pvd->vdev_child, oldc * sizeof (vdev_t *));
609eda14cbcSMatt Macy pvd->vdev_child = newchild;
610eda14cbcSMatt Macy pvd->vdev_children = newc;
611eda14cbcSMatt Macy }
612eda14cbcSMatt Macy
613eda14cbcSMatt Macy /*
614eda14cbcSMatt Macy * Allocate and minimally initialize a vdev_t.
615eda14cbcSMatt Macy */
616eda14cbcSMatt Macy vdev_t *
vdev_alloc_common(spa_t * spa,uint_t id,uint64_t guid,vdev_ops_t * ops)617eda14cbcSMatt Macy vdev_alloc_common(spa_t *spa, uint_t id, uint64_t guid, vdev_ops_t *ops)
618eda14cbcSMatt Macy {
619eda14cbcSMatt Macy vdev_t *vd;
620eda14cbcSMatt Macy vdev_indirect_config_t *vic;
621eda14cbcSMatt Macy
622eda14cbcSMatt Macy vd = kmem_zalloc(sizeof (vdev_t), KM_SLEEP);
623eda14cbcSMatt Macy vic = &vd->vdev_indirect_config;
624eda14cbcSMatt Macy
625eda14cbcSMatt Macy if (spa->spa_root_vdev == NULL) {
626eda14cbcSMatt Macy ASSERT(ops == &vdev_root_ops);
627eda14cbcSMatt Macy spa->spa_root_vdev = vd;
628eda14cbcSMatt Macy spa->spa_load_guid = spa_generate_guid(NULL);
629eda14cbcSMatt Macy }
630eda14cbcSMatt Macy
631eda14cbcSMatt Macy if (guid == 0 && ops != &vdev_hole_ops) {
632eda14cbcSMatt Macy if (spa->spa_root_vdev == vd) {
633eda14cbcSMatt Macy /*
634eda14cbcSMatt Macy * The root vdev's guid will also be the pool guid,
635eda14cbcSMatt Macy * which must be unique among all pools.
636eda14cbcSMatt Macy */
637eda14cbcSMatt Macy guid = spa_generate_guid(NULL);
638eda14cbcSMatt Macy } else {
639eda14cbcSMatt Macy /*
640eda14cbcSMatt Macy * Any other vdev's guid must be unique within the pool.
641eda14cbcSMatt Macy */
642eda14cbcSMatt Macy guid = spa_generate_guid(spa);
643eda14cbcSMatt Macy }
644eda14cbcSMatt Macy ASSERT(!spa_guid_exists(spa_guid(spa), guid));
645eda14cbcSMatt Macy }
646eda14cbcSMatt Macy
6477877fdebSMatt Macy vd->vdev_spa = spa;
648eda14cbcSMatt Macy vd->vdev_id = id;
649eda14cbcSMatt Macy vd->vdev_guid = guid;
650eda14cbcSMatt Macy vd->vdev_guid_sum = guid;
651eda14cbcSMatt Macy vd->vdev_ops = ops;
652eda14cbcSMatt Macy vd->vdev_state = VDEV_STATE_CLOSED;
653eda14cbcSMatt Macy vd->vdev_ishole = (ops == &vdev_hole_ops);
654eda14cbcSMatt Macy vic->vic_prev_indirect_vdev = UINT64_MAX;
655eda14cbcSMatt Macy
656eda14cbcSMatt Macy rw_init(&vd->vdev_indirect_rwlock, NULL, RW_DEFAULT, NULL);
657eda14cbcSMatt Macy mutex_init(&vd->vdev_obsolete_lock, NULL, MUTEX_DEFAULT, NULL);
658eda14cbcSMatt Macy vd->vdev_obsolete_segments = range_tree_create(NULL, RANGE_SEG64, NULL,
659eda14cbcSMatt Macy 0, 0);
660eda14cbcSMatt Macy
661eda14cbcSMatt Macy /*
662eda14cbcSMatt Macy * Initialize rate limit structs for events. We rate limit ZIO delay
663eda14cbcSMatt Macy * and checksum events so that we don't overwhelm ZED with thousands
664eda14cbcSMatt Macy * of events when a disk is acting up.
665eda14cbcSMatt Macy */
666eda14cbcSMatt Macy zfs_ratelimit_init(&vd->vdev_delay_rl, &zfs_slow_io_events_per_second,
667eda14cbcSMatt Macy 1);
668eda14cbcSMatt Macy zfs_ratelimit_init(&vd->vdev_deadman_rl, &zfs_slow_io_events_per_second,
669eda14cbcSMatt Macy 1);
670eda14cbcSMatt Macy zfs_ratelimit_init(&vd->vdev_checksum_rl,
671eda14cbcSMatt Macy &zfs_checksum_events_per_second, 1);
672eda14cbcSMatt Macy
673eda14cbcSMatt Macy /*
674eda14cbcSMatt Macy * Default Thresholds for tuning ZED
675eda14cbcSMatt Macy */
676eda14cbcSMatt Macy vd->vdev_checksum_n = vdev_prop_default_numeric(VDEV_PROP_CHECKSUM_N);
677eda14cbcSMatt Macy vd->vdev_checksum_t = vdev_prop_default_numeric(VDEV_PROP_CHECKSUM_T);
678eda14cbcSMatt Macy vd->vdev_io_n = vdev_prop_default_numeric(VDEV_PROP_IO_N);
679eda14cbcSMatt Macy vd->vdev_io_t = vdev_prop_default_numeric(VDEV_PROP_IO_T);
680eda14cbcSMatt Macy vd->vdev_slow_io_n = vdev_prop_default_numeric(VDEV_PROP_SLOW_IO_N);
681eda14cbcSMatt Macy vd->vdev_slow_io_t = vdev_prop_default_numeric(VDEV_PROP_SLOW_IO_T);
682eda14cbcSMatt Macy
683eda14cbcSMatt Macy list_link_init(&vd->vdev_config_dirty_node);
684eda14cbcSMatt Macy list_link_init(&vd->vdev_state_dirty_node);
685eda14cbcSMatt Macy list_link_init(&vd->vdev_initialize_node);
686eda14cbcSMatt Macy list_link_init(&vd->vdev_leaf_node);
687eda14cbcSMatt Macy list_link_init(&vd->vdev_trim_node);
688eda14cbcSMatt Macy
689eda14cbcSMatt Macy mutex_init(&vd->vdev_dtl_lock, NULL, MUTEX_NOLOCKDEP, NULL);
690eda14cbcSMatt Macy mutex_init(&vd->vdev_stat_lock, NULL, MUTEX_DEFAULT, NULL);
691eda14cbcSMatt Macy mutex_init(&vd->vdev_probe_lock, NULL, MUTEX_DEFAULT, NULL);
692eda14cbcSMatt Macy mutex_init(&vd->vdev_scan_io_queue_lock, NULL, MUTEX_DEFAULT, NULL);
693eda14cbcSMatt Macy
694eda14cbcSMatt Macy mutex_init(&vd->vdev_initialize_lock, NULL, MUTEX_DEFAULT, NULL);
695eda14cbcSMatt Macy mutex_init(&vd->vdev_initialize_io_lock, NULL, MUTEX_DEFAULT, NULL);
696eda14cbcSMatt Macy cv_init(&vd->vdev_initialize_cv, NULL, CV_DEFAULT, NULL);
697eda14cbcSMatt Macy cv_init(&vd->vdev_initialize_io_cv, NULL, CV_DEFAULT, NULL);
698eda14cbcSMatt Macy
699eda14cbcSMatt Macy mutex_init(&vd->vdev_trim_lock, NULL, MUTEX_DEFAULT, NULL);
700eda14cbcSMatt Macy mutex_init(&vd->vdev_autotrim_lock, NULL, MUTEX_DEFAULT, NULL);
701eda14cbcSMatt Macy mutex_init(&vd->vdev_trim_io_lock, NULL, MUTEX_DEFAULT, NULL);
702eda14cbcSMatt Macy cv_init(&vd->vdev_trim_cv, NULL, CV_DEFAULT, NULL);
703eda14cbcSMatt Macy cv_init(&vd->vdev_autotrim_cv, NULL, CV_DEFAULT, NULL);
704eda14cbcSMatt Macy cv_init(&vd->vdev_autotrim_kick_cv, NULL, CV_DEFAULT, NULL);
705eda14cbcSMatt Macy cv_init(&vd->vdev_trim_io_cv, NULL, CV_DEFAULT, NULL);
706eda14cbcSMatt Macy
7077877fdebSMatt Macy mutex_init(&vd->vdev_rebuild_lock, NULL, MUTEX_DEFAULT, NULL);
7087877fdebSMatt Macy cv_init(&vd->vdev_rebuild_cv, NULL, CV_DEFAULT, NULL);
7097877fdebSMatt Macy
7107877fdebSMatt Macy for (int t = 0; t < DTL_TYPES; t++) {
711eda14cbcSMatt Macy vd->vdev_dtl[t] = range_tree_create(NULL, RANGE_SEG64, NULL, 0,
712eda14cbcSMatt Macy 0);
713eda14cbcSMatt Macy }
714eda14cbcSMatt Macy
715eda14cbcSMatt Macy txg_list_create(&vd->vdev_ms_list, spa,
716eda14cbcSMatt Macy offsetof(struct metaslab, ms_txg_node));
717eda14cbcSMatt Macy txg_list_create(&vd->vdev_dtl_list, spa,
718eda14cbcSMatt Macy offsetof(struct vdev, vdev_dtl_node));
719eda14cbcSMatt Macy vd->vdev_stat.vs_timestamp = gethrtime();
720eda14cbcSMatt Macy vdev_queue_init(vd);
721eda14cbcSMatt Macy
7227877fdebSMatt Macy return (vd);
7237877fdebSMatt Macy }
7247877fdebSMatt Macy
7257877fdebSMatt Macy /*
7267877fdebSMatt Macy * Allocate a new vdev. The 'alloctype' is used to control whether we are
7277877fdebSMatt Macy * creating a new vdev or loading an existing one - the behavior is slightly
7287877fdebSMatt Macy * different for each case.
7297877fdebSMatt Macy */
7307877fdebSMatt Macy int
vdev_alloc(spa_t * spa,vdev_t ** vdp,nvlist_t * nv,vdev_t * parent,uint_t id,int alloctype)7317877fdebSMatt Macy vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, uint_t id,
7327877fdebSMatt Macy int alloctype)
7337877fdebSMatt Macy {
7347877fdebSMatt Macy vdev_ops_t *ops;
7357877fdebSMatt Macy const char *type;
7367877fdebSMatt Macy uint64_t guid = 0, islog;
7377877fdebSMatt Macy vdev_t *vd;
7387877fdebSMatt Macy vdev_indirect_config_t *vic;
7397877fdebSMatt Macy const char *tmp = NULL;
7407877fdebSMatt Macy int rc;
7417877fdebSMatt Macy vdev_alloc_bias_t alloc_bias = VDEV_BIAS_NONE;
742eda14cbcSMatt Macy boolean_t top_level = (parent && !parent->vdev_parent);
743eda14cbcSMatt Macy
744eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
7457877fdebSMatt Macy
746eda14cbcSMatt Macy if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0)
7477877fdebSMatt Macy return (SET_ERROR(EINVAL));
748eda14cbcSMatt Macy
749eda14cbcSMatt Macy if ((ops = vdev_getops(type)) == NULL)
750eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
751eda14cbcSMatt Macy
752eda14cbcSMatt Macy /*
753eda14cbcSMatt Macy * If this is a load, get the vdev guid from the nvlist.
754eda14cbcSMatt Macy * Otherwise, vdev_alloc_common() will generate one for us.
755eda14cbcSMatt Macy */
756eda14cbcSMatt Macy if (alloctype == VDEV_ALLOC_LOAD) {
757eda14cbcSMatt Macy uint64_t label_id;
758eda14cbcSMatt Macy
759eda14cbcSMatt Macy if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, &label_id) ||
760eda14cbcSMatt Macy label_id != id)
761eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
762eda14cbcSMatt Macy
763eda14cbcSMatt Macy if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0)
764eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
765eda14cbcSMatt Macy } else if (alloctype == VDEV_ALLOC_SPARE) {
766eda14cbcSMatt Macy if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0)
767eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
768eda14cbcSMatt Macy } else if (alloctype == VDEV_ALLOC_L2CACHE) {
769eda14cbcSMatt Macy if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0)
770eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
771eda14cbcSMatt Macy } else if (alloctype == VDEV_ALLOC_ROOTPOOL) {
772eda14cbcSMatt Macy if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0)
773eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
774eda14cbcSMatt Macy }
775eda14cbcSMatt Macy
776eda14cbcSMatt Macy /*
777eda14cbcSMatt Macy * The first allocated vdev must be of type 'root'.
778eda14cbcSMatt Macy */
779eda14cbcSMatt Macy if (ops != &vdev_root_ops && spa->spa_root_vdev == NULL)
780eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
781eda14cbcSMatt Macy
782eda14cbcSMatt Macy /*
783eda14cbcSMatt Macy * Determine whether we're a log vdev.
784eda14cbcSMatt Macy */
785eda14cbcSMatt Macy islog = 0;
786eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &islog);
7877877fdebSMatt Macy if (islog && spa_version(spa) < SPA_VERSION_SLOGS)
7887877fdebSMatt Macy return (SET_ERROR(ENOTSUP));
789eda14cbcSMatt Macy
790eda14cbcSMatt Macy if (ops == &vdev_hole_ops && spa_version(spa) < SPA_VERSION_HOLES)
791eda14cbcSMatt Macy return (SET_ERROR(ENOTSUP));
792eda14cbcSMatt Macy
793eda14cbcSMatt Macy if (top_level && alloctype == VDEV_ALLOC_ADD) {
794eda14cbcSMatt Macy const char *bias;
795eda14cbcSMatt Macy
796eda14cbcSMatt Macy /*
797eda14cbcSMatt Macy * If creating a top-level vdev, check for allocation
798eda14cbcSMatt Macy * classes input.
799eda14cbcSMatt Macy */
800eda14cbcSMatt Macy if (nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS,
801eda14cbcSMatt Macy &bias) == 0) {
802eda14cbcSMatt Macy alloc_bias = vdev_derive_alloc_bias(bias);
803eda14cbcSMatt Macy
804eda14cbcSMatt Macy /* spa_vdev_add() expects feature to be enabled */
805eda14cbcSMatt Macy if (spa->spa_load_state != SPA_LOAD_CREATE &&
806eda14cbcSMatt Macy !spa_feature_is_enabled(spa,
807eda14cbcSMatt Macy SPA_FEATURE_ALLOCATION_CLASSES)) {
808eda14cbcSMatt Macy return (SET_ERROR(ENOTSUP));
809eda14cbcSMatt Macy }
810eda14cbcSMatt Macy }
811eda14cbcSMatt Macy
812eda14cbcSMatt Macy /* spa_vdev_add() expects feature to be enabled */
813eda14cbcSMatt Macy if (ops == &vdev_draid_ops &&
814eda14cbcSMatt Macy spa->spa_load_state != SPA_LOAD_CREATE &&
815eda14cbcSMatt Macy !spa_feature_is_enabled(spa, SPA_FEATURE_DRAID)) {
816eda14cbcSMatt Macy return (SET_ERROR(ENOTSUP));
817eda14cbcSMatt Macy }
818eda14cbcSMatt Macy }
819eda14cbcSMatt Macy
820eda14cbcSMatt Macy /*
821eda14cbcSMatt Macy * Initialize the vdev specific data. This is done before calling
822eda14cbcSMatt Macy * vdev_alloc_common() since it may fail and this simplifies the
823eda14cbcSMatt Macy * error reporting and cleanup code paths.
824eda14cbcSMatt Macy */
825eda14cbcSMatt Macy void *tsd = NULL;
826eda14cbcSMatt Macy if (ops->vdev_op_init != NULL) {
827eda14cbcSMatt Macy rc = ops->vdev_op_init(spa, nv, &tsd);
828eda14cbcSMatt Macy if (rc != 0) {
829eda14cbcSMatt Macy return (rc);
830eda14cbcSMatt Macy }
831eda14cbcSMatt Macy }
832eda14cbcSMatt Macy
833eda14cbcSMatt Macy vd = vdev_alloc_common(spa, id, guid, ops);
834eda14cbcSMatt Macy vd->vdev_tsd = tsd;
835eda14cbcSMatt Macy vd->vdev_islog = islog;
836eda14cbcSMatt Macy
837eda14cbcSMatt Macy if (top_level && alloc_bias != VDEV_BIAS_NONE)
838eda14cbcSMatt Macy vd->vdev_alloc_bias = alloc_bias;
839eda14cbcSMatt Macy
840eda14cbcSMatt Macy if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &tmp) == 0)
841eda14cbcSMatt Macy vd->vdev_path = spa_strdup(tmp);
842eda14cbcSMatt Macy
843eda14cbcSMatt Macy /*
844eda14cbcSMatt Macy * ZPOOL_CONFIG_AUX_STATE = "external" means we previously forced a
845eda14cbcSMatt Macy * fault on a vdev and want it to persist across imports (like with
846eda14cbcSMatt Macy * zpool offline -f).
847eda14cbcSMatt Macy */
848eda14cbcSMatt Macy rc = nvlist_lookup_string(nv, ZPOOL_CONFIG_AUX_STATE, &tmp);
849eda14cbcSMatt Macy if (rc == 0 && tmp != NULL && strcmp(tmp, "external") == 0) {
850eda14cbcSMatt Macy vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL;
851eda14cbcSMatt Macy vd->vdev_faulted = 1;
852eda14cbcSMatt Macy vd->vdev_label_aux = VDEV_AUX_EXTERNAL;
853eda14cbcSMatt Macy }
854eda14cbcSMatt Macy
855eda14cbcSMatt Macy if (nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &tmp) == 0)
856eda14cbcSMatt Macy vd->vdev_devid = spa_strdup(tmp);
857eda14cbcSMatt Macy if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PHYS_PATH, &tmp) == 0)
858eda14cbcSMatt Macy vd->vdev_physpath = spa_strdup(tmp);
859eda14cbcSMatt Macy
860eda14cbcSMatt Macy if (nvlist_lookup_string(nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH,
861eda14cbcSMatt Macy &tmp) == 0)
862eda14cbcSMatt Macy vd->vdev_enc_sysfs_path = spa_strdup(tmp);
863eda14cbcSMatt Macy
864eda14cbcSMatt Macy if (nvlist_lookup_string(nv, ZPOOL_CONFIG_FRU, &tmp) == 0)
865eda14cbcSMatt Macy vd->vdev_fru = spa_strdup(tmp);
866eda14cbcSMatt Macy
867eda14cbcSMatt Macy /*
868eda14cbcSMatt Macy * Set the whole_disk property. If it's not specified, leave the value
869eda14cbcSMatt Macy * as -1.
870eda14cbcSMatt Macy */
871eda14cbcSMatt Macy if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
872eda14cbcSMatt Macy &vd->vdev_wholedisk) != 0)
873eda14cbcSMatt Macy vd->vdev_wholedisk = -1ULL;
874eda14cbcSMatt Macy
875eda14cbcSMatt Macy vic = &vd->vdev_indirect_config;
876eda14cbcSMatt Macy
877eda14cbcSMatt Macy ASSERT0(vic->vic_mapping_object);
878eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_OBJECT,
879eda14cbcSMatt Macy &vic->vic_mapping_object);
880eda14cbcSMatt Macy ASSERT0(vic->vic_births_object);
881eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_BIRTHS,
882eda14cbcSMatt Macy &vic->vic_births_object);
883eda14cbcSMatt Macy ASSERT3U(vic->vic_prev_indirect_vdev, ==, UINT64_MAX);
884eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_PREV_INDIRECT_VDEV,
885eda14cbcSMatt Macy &vic->vic_prev_indirect_vdev);
886eda14cbcSMatt Macy
887eda14cbcSMatt Macy /*
888eda14cbcSMatt Macy * Look for the 'not present' flag. This will only be set if the device
889eda14cbcSMatt Macy * was not present at the time of import.
890eda14cbcSMatt Macy */
891eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT,
892eda14cbcSMatt Macy &vd->vdev_not_present);
893eda14cbcSMatt Macy
894eda14cbcSMatt Macy /*
895eda14cbcSMatt Macy * Get the alignment requirement. Ignore pool ashift for vdev
896eda14cbcSMatt Macy * attach case.
897eda14cbcSMatt Macy */
898eda14cbcSMatt Macy if (alloctype != VDEV_ALLOC_ATTACH) {
899eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASHIFT,
900eda14cbcSMatt Macy &vd->vdev_ashift);
901eda14cbcSMatt Macy } else {
902eda14cbcSMatt Macy vd->vdev_attaching = B_TRUE;
903eda14cbcSMatt Macy }
904eda14cbcSMatt Macy
905eda14cbcSMatt Macy /*
906eda14cbcSMatt Macy * Retrieve the vdev creation time.
907eda14cbcSMatt Macy */
908eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_CREATE_TXG,
909eda14cbcSMatt Macy &vd->vdev_crtxg);
910eda14cbcSMatt Macy
911eda14cbcSMatt Macy if (vd->vdev_ops == &vdev_root_ops &&
912eda14cbcSMatt Macy (alloctype == VDEV_ALLOC_LOAD ||
913eda14cbcSMatt Macy alloctype == VDEV_ALLOC_SPLIT ||
914eda14cbcSMatt Macy alloctype == VDEV_ALLOC_ROOTPOOL)) {
915eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_VDEV_ROOT_ZAP,
916eda14cbcSMatt Macy &vd->vdev_root_zap);
917eda14cbcSMatt Macy }
918eda14cbcSMatt Macy
919eda14cbcSMatt Macy /*
920eda14cbcSMatt Macy * If we're a top-level vdev, try to load the allocation parameters.
921eda14cbcSMatt Macy */
922eda14cbcSMatt Macy if (top_level &&
923eda14cbcSMatt Macy (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) {
924eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_ARRAY,
925eda14cbcSMatt Macy &vd->vdev_ms_array);
926eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_SHIFT,
927eda14cbcSMatt Macy &vd->vdev_ms_shift);
928eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASIZE,
929eda14cbcSMatt Macy &vd->vdev_asize);
930eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NONALLOCATING,
931eda14cbcSMatt Macy &vd->vdev_noalloc);
932eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVING,
933eda14cbcSMatt Macy &vd->vdev_removing);
934eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_VDEV_TOP_ZAP,
935eda14cbcSMatt Macy &vd->vdev_top_zap);
936eda14cbcSMatt Macy vd->vdev_rz_expanding = nvlist_exists(nv,
937eda14cbcSMatt Macy ZPOOL_CONFIG_RAIDZ_EXPANDING);
938eda14cbcSMatt Macy } else {
939eda14cbcSMatt Macy ASSERT0(vd->vdev_top_zap);
940eda14cbcSMatt Macy }
941eda14cbcSMatt Macy
942eda14cbcSMatt Macy if (top_level && alloctype != VDEV_ALLOC_ATTACH) {
943eda14cbcSMatt Macy ASSERT(alloctype == VDEV_ALLOC_LOAD ||
944eda14cbcSMatt Macy alloctype == VDEV_ALLOC_ADD ||
945eda14cbcSMatt Macy alloctype == VDEV_ALLOC_SPLIT ||
946eda14cbcSMatt Macy alloctype == VDEV_ALLOC_ROOTPOOL);
947eda14cbcSMatt Macy /* Note: metaslab_group_create() is now deferred */
948eda14cbcSMatt Macy }
949eda14cbcSMatt Macy
950eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf &&
951eda14cbcSMatt Macy (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) {
952eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv,
953eda14cbcSMatt Macy ZPOOL_CONFIG_VDEV_LEAF_ZAP, &vd->vdev_leaf_zap);
954eda14cbcSMatt Macy } else {
955eda14cbcSMatt Macy ASSERT0(vd->vdev_leaf_zap);
956eda14cbcSMatt Macy }
957eda14cbcSMatt Macy
958eda14cbcSMatt Macy /*
959eda14cbcSMatt Macy * If we're a leaf vdev, try to load the DTL object and other state.
960eda14cbcSMatt Macy */
961eda14cbcSMatt Macy
962eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf &&
963eda14cbcSMatt Macy (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_L2CACHE ||
964eda14cbcSMatt Macy alloctype == VDEV_ALLOC_ROOTPOOL)) {
965eda14cbcSMatt Macy if (alloctype == VDEV_ALLOC_LOAD) {
966eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DTL,
967eda14cbcSMatt Macy &vd->vdev_dtl_object);
968eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_UNSPARE,
969eda14cbcSMatt Macy &vd->vdev_unspare);
9707877fdebSMatt Macy }
9717877fdebSMatt Macy
9727877fdebSMatt Macy if (alloctype == VDEV_ALLOC_ROOTPOOL) {
973eda14cbcSMatt Macy uint64_t spare = 0;
974eda14cbcSMatt Macy
975eda14cbcSMatt Macy if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE,
976eda14cbcSMatt Macy &spare) == 0 && spare)
977eda14cbcSMatt Macy spa_spare_add(vd);
978eda14cbcSMatt Macy }
979eda14cbcSMatt Macy
980eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE,
981eda14cbcSMatt Macy &vd->vdev_offline);
982eda14cbcSMatt Macy
983eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_RESILVER_TXG,
984eda14cbcSMatt Macy &vd->vdev_resilver_txg);
985eda14cbcSMatt Macy
986eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REBUILD_TXG,
987eda14cbcSMatt Macy &vd->vdev_rebuild_txg);
988eda14cbcSMatt Macy
989eda14cbcSMatt Macy if (nvlist_exists(nv, ZPOOL_CONFIG_RESILVER_DEFER))
990eda14cbcSMatt Macy vdev_defer_resilver(vd);
991eda14cbcSMatt Macy
992eda14cbcSMatt Macy /*
993eda14cbcSMatt Macy * In general, when importing a pool we want to ignore the
994eda14cbcSMatt Macy * persistent fault state, as the diagnosis made on another
995eda14cbcSMatt Macy * system may not be valid in the current context. The only
996eda14cbcSMatt Macy * exception is if we forced a vdev to a persistently faulted
997eda14cbcSMatt Macy * state with 'zpool offline -f'. The persistent fault will
998eda14cbcSMatt Macy * remain across imports until cleared.
999eda14cbcSMatt Macy *
1000eda14cbcSMatt Macy * Local vdevs will remain in the faulted state.
1001eda14cbcSMatt Macy */
1002eda14cbcSMatt Macy if (spa_load_state(spa) == SPA_LOAD_OPEN ||
1003eda14cbcSMatt Macy spa_load_state(spa) == SPA_LOAD_IMPORT) {
1004eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED,
1005eda14cbcSMatt Macy &vd->vdev_faulted);
1006eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DEGRADED,
1007eda14cbcSMatt Macy &vd->vdev_degraded);
1008eda14cbcSMatt Macy (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED,
1009eda14cbcSMatt Macy &vd->vdev_removed);
1010eda14cbcSMatt Macy
1011eda14cbcSMatt Macy if (vd->vdev_faulted || vd->vdev_degraded) {
1012eda14cbcSMatt Macy const char *aux;
1013eda14cbcSMatt Macy
1014eda14cbcSMatt Macy vd->vdev_label_aux =
1015eda14cbcSMatt Macy VDEV_AUX_ERR_EXCEEDED;
1016eda14cbcSMatt Macy if (nvlist_lookup_string(nv,
1017eda14cbcSMatt Macy ZPOOL_CONFIG_AUX_STATE, &aux) == 0 &&
1018eda14cbcSMatt Macy strcmp(aux, "external") == 0)
1019eda14cbcSMatt Macy vd->vdev_label_aux = VDEV_AUX_EXTERNAL;
1020eda14cbcSMatt Macy else
1021eda14cbcSMatt Macy vd->vdev_faulted = 0ULL;
1022eda14cbcSMatt Macy }
1023eda14cbcSMatt Macy }
1024eda14cbcSMatt Macy }
1025eda14cbcSMatt Macy
1026eda14cbcSMatt Macy /*
1027eda14cbcSMatt Macy * Add ourselves to the parent's list of children.
1028eda14cbcSMatt Macy */
1029eda14cbcSMatt Macy vdev_add_child(parent, vd);
1030eda14cbcSMatt Macy
1031eda14cbcSMatt Macy *vdp = vd;
1032eda14cbcSMatt Macy
1033eda14cbcSMatt Macy return (0);
1034eda14cbcSMatt Macy }
1035eda14cbcSMatt Macy
1036eda14cbcSMatt Macy void
vdev_free(vdev_t * vd)1037eda14cbcSMatt Macy vdev_free(vdev_t *vd)
1038eda14cbcSMatt Macy {
1039eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
1040eda14cbcSMatt Macy
1041eda14cbcSMatt Macy ASSERT3P(vd->vdev_initialize_thread, ==, NULL);
1042eda14cbcSMatt Macy ASSERT3P(vd->vdev_trim_thread, ==, NULL);
1043eda14cbcSMatt Macy ASSERT3P(vd->vdev_autotrim_thread, ==, NULL);
1044eda14cbcSMatt Macy ASSERT3P(vd->vdev_rebuild_thread, ==, NULL);
1045eda14cbcSMatt Macy
1046eda14cbcSMatt Macy /*
1047eda14cbcSMatt Macy * Scan queues are normally destroyed at the end of a scan. If the
1048eda14cbcSMatt Macy * queue exists here, that implies the vdev is being removed while
1049eda14cbcSMatt Macy * the scan is still running.
1050eda14cbcSMatt Macy */
1051eda14cbcSMatt Macy if (vd->vdev_scan_io_queue != NULL) {
1052eda14cbcSMatt Macy mutex_enter(&vd->vdev_scan_io_queue_lock);
1053eda14cbcSMatt Macy dsl_scan_io_queue_destroy(vd->vdev_scan_io_queue);
1054eda14cbcSMatt Macy vd->vdev_scan_io_queue = NULL;
1055eda14cbcSMatt Macy mutex_exit(&vd->vdev_scan_io_queue_lock);
1056eda14cbcSMatt Macy }
1057eda14cbcSMatt Macy
1058eda14cbcSMatt Macy /*
1059eda14cbcSMatt Macy * vdev_free() implies closing the vdev first. This is simpler than
1060eda14cbcSMatt Macy * trying to ensure complicated semantics for all callers.
1061eda14cbcSMatt Macy */
1062eda14cbcSMatt Macy vdev_close(vd);
1063eda14cbcSMatt Macy
1064eda14cbcSMatt Macy ASSERT(!list_link_active(&vd->vdev_config_dirty_node));
1065eda14cbcSMatt Macy ASSERT(!list_link_active(&vd->vdev_state_dirty_node));
1066eda14cbcSMatt Macy
1067eda14cbcSMatt Macy /*
1068eda14cbcSMatt Macy * Free all children.
1069eda14cbcSMatt Macy */
1070eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
1071eda14cbcSMatt Macy vdev_free(vd->vdev_child[c]);
1072eda14cbcSMatt Macy
1073eda14cbcSMatt Macy ASSERT(vd->vdev_child == NULL);
1074eda14cbcSMatt Macy ASSERT(vd->vdev_guid_sum == vd->vdev_guid);
1075eda14cbcSMatt Macy
1076eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_fini != NULL)
1077eda14cbcSMatt Macy vd->vdev_ops->vdev_op_fini(vd);
1078eda14cbcSMatt Macy
1079eda14cbcSMatt Macy /*
1080eda14cbcSMatt Macy * Discard allocation state.
1081eda14cbcSMatt Macy */
1082eda14cbcSMatt Macy if (vd->vdev_mg != NULL) {
1083eda14cbcSMatt Macy vdev_metaslab_fini(vd);
1084eda14cbcSMatt Macy metaslab_group_destroy(vd->vdev_mg);
1085eda14cbcSMatt Macy vd->vdev_mg = NULL;
1086eda14cbcSMatt Macy }
1087eda14cbcSMatt Macy if (vd->vdev_log_mg != NULL) {
1088eda14cbcSMatt Macy ASSERT0(vd->vdev_ms_count);
1089eda14cbcSMatt Macy metaslab_group_destroy(vd->vdev_log_mg);
1090eda14cbcSMatt Macy vd->vdev_log_mg = NULL;
1091eda14cbcSMatt Macy }
1092eda14cbcSMatt Macy
1093eda14cbcSMatt Macy ASSERT0(vd->vdev_stat.vs_space);
1094eda14cbcSMatt Macy ASSERT0(vd->vdev_stat.vs_dspace);
1095eda14cbcSMatt Macy ASSERT0(vd->vdev_stat.vs_alloc);
1096eda14cbcSMatt Macy
1097eda14cbcSMatt Macy /*
1098eda14cbcSMatt Macy * Remove this vdev from its parent's child list.
1099eda14cbcSMatt Macy */
1100eda14cbcSMatt Macy vdev_remove_child(vd->vdev_parent, vd);
1101eda14cbcSMatt Macy
1102eda14cbcSMatt Macy ASSERT(vd->vdev_parent == NULL);
1103eda14cbcSMatt Macy ASSERT(!list_link_active(&vd->vdev_leaf_node));
1104eda14cbcSMatt Macy
1105eda14cbcSMatt Macy /*
1106eda14cbcSMatt Macy * Clean up vdev structure.
1107eda14cbcSMatt Macy */
1108eda14cbcSMatt Macy vdev_queue_fini(vd);
1109eda14cbcSMatt Macy
1110eda14cbcSMatt Macy if (vd->vdev_path)
1111eda14cbcSMatt Macy spa_strfree(vd->vdev_path);
1112eda14cbcSMatt Macy if (vd->vdev_devid)
1113eda14cbcSMatt Macy spa_strfree(vd->vdev_devid);
1114eda14cbcSMatt Macy if (vd->vdev_physpath)
1115eda14cbcSMatt Macy spa_strfree(vd->vdev_physpath);
1116eda14cbcSMatt Macy
1117eda14cbcSMatt Macy if (vd->vdev_enc_sysfs_path)
1118eda14cbcSMatt Macy spa_strfree(vd->vdev_enc_sysfs_path);
1119eda14cbcSMatt Macy
1120eda14cbcSMatt Macy if (vd->vdev_fru)
1121eda14cbcSMatt Macy spa_strfree(vd->vdev_fru);
1122eda14cbcSMatt Macy
1123eda14cbcSMatt Macy if (vd->vdev_isspare)
1124eda14cbcSMatt Macy spa_spare_remove(vd);
1125eda14cbcSMatt Macy if (vd->vdev_isl2cache)
1126eda14cbcSMatt Macy spa_l2cache_remove(vd);
1127eda14cbcSMatt Macy
1128eda14cbcSMatt Macy txg_list_destroy(&vd->vdev_ms_list);
1129eda14cbcSMatt Macy txg_list_destroy(&vd->vdev_dtl_list);
1130eda14cbcSMatt Macy
1131eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
1132eda14cbcSMatt Macy space_map_close(vd->vdev_dtl_sm);
1133eda14cbcSMatt Macy for (int t = 0; t < DTL_TYPES; t++) {
1134eda14cbcSMatt Macy range_tree_vacate(vd->vdev_dtl[t], NULL, NULL);
1135eda14cbcSMatt Macy range_tree_destroy(vd->vdev_dtl[t]);
1136eda14cbcSMatt Macy }
1137eda14cbcSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
1138eda14cbcSMatt Macy
1139eda14cbcSMatt Macy EQUIV(vd->vdev_indirect_births != NULL,
1140eda14cbcSMatt Macy vd->vdev_indirect_mapping != NULL);
1141eda14cbcSMatt Macy if (vd->vdev_indirect_births != NULL) {
1142eda14cbcSMatt Macy vdev_indirect_mapping_close(vd->vdev_indirect_mapping);
1143eda14cbcSMatt Macy vdev_indirect_births_close(vd->vdev_indirect_births);
1144eda14cbcSMatt Macy }
1145eda14cbcSMatt Macy
1146eda14cbcSMatt Macy if (vd->vdev_obsolete_sm != NULL) {
1147eda14cbcSMatt Macy ASSERT(vd->vdev_removing ||
1148eda14cbcSMatt Macy vd->vdev_ops == &vdev_indirect_ops);
1149eda14cbcSMatt Macy space_map_close(vd->vdev_obsolete_sm);
1150eda14cbcSMatt Macy vd->vdev_obsolete_sm = NULL;
1151eda14cbcSMatt Macy }
1152eda14cbcSMatt Macy range_tree_destroy(vd->vdev_obsolete_segments);
1153eda14cbcSMatt Macy rw_destroy(&vd->vdev_indirect_rwlock);
1154eda14cbcSMatt Macy mutex_destroy(&vd->vdev_obsolete_lock);
1155eda14cbcSMatt Macy
1156eda14cbcSMatt Macy mutex_destroy(&vd->vdev_dtl_lock);
1157eda14cbcSMatt Macy mutex_destroy(&vd->vdev_stat_lock);
1158eda14cbcSMatt Macy mutex_destroy(&vd->vdev_probe_lock);
1159eda14cbcSMatt Macy mutex_destroy(&vd->vdev_scan_io_queue_lock);
1160eda14cbcSMatt Macy
1161eda14cbcSMatt Macy mutex_destroy(&vd->vdev_initialize_lock);
1162eda14cbcSMatt Macy mutex_destroy(&vd->vdev_initialize_io_lock);
1163eda14cbcSMatt Macy cv_destroy(&vd->vdev_initialize_io_cv);
1164eda14cbcSMatt Macy cv_destroy(&vd->vdev_initialize_cv);
1165eda14cbcSMatt Macy
1166eda14cbcSMatt Macy mutex_destroy(&vd->vdev_trim_lock);
1167eda14cbcSMatt Macy mutex_destroy(&vd->vdev_autotrim_lock);
1168eda14cbcSMatt Macy mutex_destroy(&vd->vdev_trim_io_lock);
1169eda14cbcSMatt Macy cv_destroy(&vd->vdev_trim_cv);
1170eda14cbcSMatt Macy cv_destroy(&vd->vdev_autotrim_cv);
1171eda14cbcSMatt Macy cv_destroy(&vd->vdev_autotrim_kick_cv);
1172eda14cbcSMatt Macy cv_destroy(&vd->vdev_trim_io_cv);
1173eda14cbcSMatt Macy
1174eda14cbcSMatt Macy mutex_destroy(&vd->vdev_rebuild_lock);
1175eda14cbcSMatt Macy cv_destroy(&vd->vdev_rebuild_cv);
1176eda14cbcSMatt Macy
1177eda14cbcSMatt Macy zfs_ratelimit_fini(&vd->vdev_delay_rl);
1178eda14cbcSMatt Macy zfs_ratelimit_fini(&vd->vdev_deadman_rl);
1179eda14cbcSMatt Macy zfs_ratelimit_fini(&vd->vdev_checksum_rl);
1180eda14cbcSMatt Macy
1181eda14cbcSMatt Macy if (vd == spa->spa_root_vdev)
1182eda14cbcSMatt Macy spa->spa_root_vdev = NULL;
1183eda14cbcSMatt Macy
1184eda14cbcSMatt Macy kmem_free(vd, sizeof (vdev_t));
1185eda14cbcSMatt Macy }
1186eda14cbcSMatt Macy
1187eda14cbcSMatt Macy /*
1188eda14cbcSMatt Macy * Transfer top-level vdev state from svd to tvd.
1189eda14cbcSMatt Macy */
1190eda14cbcSMatt Macy static void
vdev_top_transfer(vdev_t * svd,vdev_t * tvd)1191eda14cbcSMatt Macy vdev_top_transfer(vdev_t *svd, vdev_t *tvd)
1192eda14cbcSMatt Macy {
1193eda14cbcSMatt Macy spa_t *spa = svd->vdev_spa;
1194eda14cbcSMatt Macy metaslab_t *msp;
11957877fdebSMatt Macy vdev_t *vd;
11967877fdebSMatt Macy int t;
1197eda14cbcSMatt Macy
1198eda14cbcSMatt Macy ASSERT(tvd == tvd->vdev_top);
1199eda14cbcSMatt Macy
1200eda14cbcSMatt Macy tvd->vdev_ms_array = svd->vdev_ms_array;
1201eda14cbcSMatt Macy tvd->vdev_ms_shift = svd->vdev_ms_shift;
1202eda14cbcSMatt Macy tvd->vdev_ms_count = svd->vdev_ms_count;
1203eda14cbcSMatt Macy tvd->vdev_top_zap = svd->vdev_top_zap;
1204eda14cbcSMatt Macy
1205eda14cbcSMatt Macy svd->vdev_ms_array = 0;
1206eda14cbcSMatt Macy svd->vdev_ms_shift = 0;
1207eda14cbcSMatt Macy svd->vdev_ms_count = 0;
1208eda14cbcSMatt Macy svd->vdev_top_zap = 0;
1209eda14cbcSMatt Macy
1210eda14cbcSMatt Macy if (tvd->vdev_mg)
1211eda14cbcSMatt Macy ASSERT3P(tvd->vdev_mg, ==, svd->vdev_mg);
1212eda14cbcSMatt Macy if (tvd->vdev_log_mg)
1213eda14cbcSMatt Macy ASSERT3P(tvd->vdev_log_mg, ==, svd->vdev_log_mg);
1214eda14cbcSMatt Macy tvd->vdev_mg = svd->vdev_mg;
1215eda14cbcSMatt Macy tvd->vdev_log_mg = svd->vdev_log_mg;
1216eda14cbcSMatt Macy tvd->vdev_ms = svd->vdev_ms;
1217eda14cbcSMatt Macy
1218eda14cbcSMatt Macy svd->vdev_mg = NULL;
1219eda14cbcSMatt Macy svd->vdev_log_mg = NULL;
1220eda14cbcSMatt Macy svd->vdev_ms = NULL;
1221eda14cbcSMatt Macy
1222eda14cbcSMatt Macy if (tvd->vdev_mg != NULL)
1223eda14cbcSMatt Macy tvd->vdev_mg->mg_vd = tvd;
1224eda14cbcSMatt Macy if (tvd->vdev_log_mg != NULL)
1225eda14cbcSMatt Macy tvd->vdev_log_mg->mg_vd = tvd;
1226eda14cbcSMatt Macy
1227eda14cbcSMatt Macy tvd->vdev_checkpoint_sm = svd->vdev_checkpoint_sm;
1228eda14cbcSMatt Macy svd->vdev_checkpoint_sm = NULL;
1229eda14cbcSMatt Macy
1230eda14cbcSMatt Macy tvd->vdev_alloc_bias = svd->vdev_alloc_bias;
1231eda14cbcSMatt Macy svd->vdev_alloc_bias = VDEV_BIAS_NONE;
1232eda14cbcSMatt Macy
1233eda14cbcSMatt Macy tvd->vdev_stat.vs_alloc = svd->vdev_stat.vs_alloc;
1234eda14cbcSMatt Macy tvd->vdev_stat.vs_space = svd->vdev_stat.vs_space;
1235eda14cbcSMatt Macy tvd->vdev_stat.vs_dspace = svd->vdev_stat.vs_dspace;
1236eda14cbcSMatt Macy
1237eda14cbcSMatt Macy svd->vdev_stat.vs_alloc = 0;
1238eda14cbcSMatt Macy svd->vdev_stat.vs_space = 0;
1239eda14cbcSMatt Macy svd->vdev_stat.vs_dspace = 0;
1240eda14cbcSMatt Macy
1241eda14cbcSMatt Macy /*
1242eda14cbcSMatt Macy * State which may be set on a top-level vdev that's in the
1243eda14cbcSMatt Macy * process of being removed.
1244eda14cbcSMatt Macy */
1245eda14cbcSMatt Macy ASSERT0(tvd->vdev_indirect_config.vic_births_object);
1246eda14cbcSMatt Macy ASSERT0(tvd->vdev_indirect_config.vic_mapping_object);
1247eda14cbcSMatt Macy ASSERT3U(tvd->vdev_indirect_config.vic_prev_indirect_vdev, ==, -1ULL);
1248eda14cbcSMatt Macy ASSERT3P(tvd->vdev_indirect_mapping, ==, NULL);
1249eda14cbcSMatt Macy ASSERT3P(tvd->vdev_indirect_births, ==, NULL);
1250eda14cbcSMatt Macy ASSERT3P(tvd->vdev_obsolete_sm, ==, NULL);
1251eda14cbcSMatt Macy ASSERT0(tvd->vdev_noalloc);
1252eda14cbcSMatt Macy ASSERT0(tvd->vdev_removing);
1253eda14cbcSMatt Macy ASSERT0(tvd->vdev_rebuilding);
1254eda14cbcSMatt Macy tvd->vdev_noalloc = svd->vdev_noalloc;
1255eda14cbcSMatt Macy tvd->vdev_removing = svd->vdev_removing;
1256eda14cbcSMatt Macy tvd->vdev_rebuilding = svd->vdev_rebuilding;
1257eda14cbcSMatt Macy tvd->vdev_rebuild_config = svd->vdev_rebuild_config;
1258eda14cbcSMatt Macy tvd->vdev_indirect_config = svd->vdev_indirect_config;
1259eda14cbcSMatt Macy tvd->vdev_indirect_mapping = svd->vdev_indirect_mapping;
1260eda14cbcSMatt Macy tvd->vdev_indirect_births = svd->vdev_indirect_births;
1261eda14cbcSMatt Macy range_tree_swap(&svd->vdev_obsolete_segments,
1262eda14cbcSMatt Macy &tvd->vdev_obsolete_segments);
1263eda14cbcSMatt Macy tvd->vdev_obsolete_sm = svd->vdev_obsolete_sm;
1264eda14cbcSMatt Macy svd->vdev_indirect_config.vic_mapping_object = 0;
1265eda14cbcSMatt Macy svd->vdev_indirect_config.vic_births_object = 0;
1266eda14cbcSMatt Macy svd->vdev_indirect_config.vic_prev_indirect_vdev = -1ULL;
1267eda14cbcSMatt Macy svd->vdev_indirect_mapping = NULL;
1268eda14cbcSMatt Macy svd->vdev_indirect_births = NULL;
1269eda14cbcSMatt Macy svd->vdev_obsolete_sm = NULL;
1270eda14cbcSMatt Macy svd->vdev_noalloc = 0;
1271eda14cbcSMatt Macy svd->vdev_removing = 0;
1272eda14cbcSMatt Macy svd->vdev_rebuilding = 0;
1273eda14cbcSMatt Macy
1274eda14cbcSMatt Macy for (t = 0; t < TXG_SIZE; t++) {
1275eda14cbcSMatt Macy while ((msp = txg_list_remove(&svd->vdev_ms_list, t)) != NULL)
1276eda14cbcSMatt Macy (void) txg_list_add(&tvd->vdev_ms_list, msp, t);
1277eda14cbcSMatt Macy while ((vd = txg_list_remove(&svd->vdev_dtl_list, t)) != NULL)
1278eda14cbcSMatt Macy (void) txg_list_add(&tvd->vdev_dtl_list, vd, t);
1279eda14cbcSMatt Macy if (txg_list_remove_this(&spa->spa_vdev_txg_list, svd, t))
1280eda14cbcSMatt Macy (void) txg_list_add(&spa->spa_vdev_txg_list, tvd, t);
1281eda14cbcSMatt Macy }
1282eda14cbcSMatt Macy
1283eda14cbcSMatt Macy if (list_link_active(&svd->vdev_config_dirty_node)) {
1284eda14cbcSMatt Macy vdev_config_clean(svd);
1285eda14cbcSMatt Macy vdev_config_dirty(tvd);
1286eda14cbcSMatt Macy }
1287eda14cbcSMatt Macy
1288eda14cbcSMatt Macy if (list_link_active(&svd->vdev_state_dirty_node)) {
1289eda14cbcSMatt Macy vdev_state_clean(svd);
1290eda14cbcSMatt Macy vdev_state_dirty(tvd);
1291eda14cbcSMatt Macy }
1292eda14cbcSMatt Macy
1293eda14cbcSMatt Macy tvd->vdev_deflate_ratio = svd->vdev_deflate_ratio;
1294eda14cbcSMatt Macy svd->vdev_deflate_ratio = 0;
1295eda14cbcSMatt Macy
1296eda14cbcSMatt Macy tvd->vdev_islog = svd->vdev_islog;
1297eda14cbcSMatt Macy svd->vdev_islog = 0;
1298eda14cbcSMatt Macy
1299eda14cbcSMatt Macy dsl_scan_io_queue_vdev_xfer(svd, tvd);
1300eda14cbcSMatt Macy }
1301eda14cbcSMatt Macy
1302eda14cbcSMatt Macy static void
vdev_top_update(vdev_t * tvd,vdev_t * vd)1303eda14cbcSMatt Macy vdev_top_update(vdev_t *tvd, vdev_t *vd)
1304eda14cbcSMatt Macy {
1305eda14cbcSMatt Macy if (vd == NULL)
1306eda14cbcSMatt Macy return;
1307eda14cbcSMatt Macy
1308eda14cbcSMatt Macy vd->vdev_top = tvd;
1309eda14cbcSMatt Macy
1310eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
1311eda14cbcSMatt Macy vdev_top_update(tvd, vd->vdev_child[c]);
1312eda14cbcSMatt Macy }
1313eda14cbcSMatt Macy
1314eda14cbcSMatt Macy /*
1315eda14cbcSMatt Macy * Add a mirror/replacing vdev above an existing vdev. There is no need to
1316eda14cbcSMatt Macy * call .vdev_op_init() since mirror/replacing vdevs do not have private state.
1317eda14cbcSMatt Macy */
1318eda14cbcSMatt Macy vdev_t *
vdev_add_parent(vdev_t * cvd,vdev_ops_t * ops)1319eda14cbcSMatt Macy vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops)
1320eda14cbcSMatt Macy {
1321180f8225SMatt Macy spa_t *spa = cvd->vdev_spa;
1322180f8225SMatt Macy vdev_t *pvd = cvd->vdev_parent;
1323180f8225SMatt Macy vdev_t *mvd;
1324eda14cbcSMatt Macy
1325eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
1326eda14cbcSMatt Macy
1327eda14cbcSMatt Macy mvd = vdev_alloc_common(spa, cvd->vdev_id, 0, ops);
1328eda14cbcSMatt Macy
1329eda14cbcSMatt Macy mvd->vdev_asize = cvd->vdev_asize;
1330eda14cbcSMatt Macy mvd->vdev_min_asize = cvd->vdev_min_asize;
13317877fdebSMatt Macy mvd->vdev_max_asize = cvd->vdev_max_asize;
13327877fdebSMatt Macy mvd->vdev_psize = cvd->vdev_psize;
13337877fdebSMatt Macy mvd->vdev_ashift = cvd->vdev_ashift;
13347877fdebSMatt Macy mvd->vdev_logical_ashift = cvd->vdev_logical_ashift;
1335eda14cbcSMatt Macy mvd->vdev_physical_ashift = cvd->vdev_physical_ashift;
1336eda14cbcSMatt Macy mvd->vdev_state = cvd->vdev_state;
1337eda14cbcSMatt Macy mvd->vdev_crtxg = cvd->vdev_crtxg;
1338eda14cbcSMatt Macy
1339eda14cbcSMatt Macy vdev_remove_child(pvd, cvd);
1340eda14cbcSMatt Macy vdev_add_child(pvd, mvd);
1341eda14cbcSMatt Macy cvd->vdev_id = mvd->vdev_children;
1342eda14cbcSMatt Macy vdev_add_child(mvd, cvd);
1343eda14cbcSMatt Macy vdev_top_update(cvd->vdev_top, cvd->vdev_top);
1344eda14cbcSMatt Macy
1345eda14cbcSMatt Macy if (mvd == mvd->vdev_top)
1346eda14cbcSMatt Macy vdev_top_transfer(cvd, mvd);
1347eda14cbcSMatt Macy
1348eda14cbcSMatt Macy return (mvd);
1349eda14cbcSMatt Macy }
1350eda14cbcSMatt Macy
1351eda14cbcSMatt Macy /*
1352eda14cbcSMatt Macy * Remove a 1-way mirror/replacing vdev from the tree.
1353eda14cbcSMatt Macy */
1354eda14cbcSMatt Macy void
vdev_remove_parent(vdev_t * cvd)1355eda14cbcSMatt Macy vdev_remove_parent(vdev_t *cvd)
1356eda14cbcSMatt Macy {
1357eda14cbcSMatt Macy vdev_t *mvd = cvd->vdev_parent;
1358eda14cbcSMatt Macy vdev_t *pvd = mvd->vdev_parent;
1359eda14cbcSMatt Macy
1360eda14cbcSMatt Macy ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
1361eda14cbcSMatt Macy
1362eda14cbcSMatt Macy ASSERT(mvd->vdev_children == 1);
1363eda14cbcSMatt Macy ASSERT(mvd->vdev_ops == &vdev_mirror_ops ||
1364eda14cbcSMatt Macy mvd->vdev_ops == &vdev_replacing_ops ||
1365eda14cbcSMatt Macy mvd->vdev_ops == &vdev_spare_ops);
1366eda14cbcSMatt Macy cvd->vdev_ashift = mvd->vdev_ashift;
1367eda14cbcSMatt Macy cvd->vdev_logical_ashift = mvd->vdev_logical_ashift;
1368eda14cbcSMatt Macy cvd->vdev_physical_ashift = mvd->vdev_physical_ashift;
1369eda14cbcSMatt Macy vdev_remove_child(mvd, cvd);
1370eda14cbcSMatt Macy vdev_remove_child(pvd, mvd);
1371eda14cbcSMatt Macy
1372eda14cbcSMatt Macy /*
1373eda14cbcSMatt Macy * If cvd will replace mvd as a top-level vdev, preserve mvd's guid.
1374eda14cbcSMatt Macy * Otherwise, we could have detached an offline device, and when we
1375eda14cbcSMatt Macy * go to import the pool we'll think we have two top-level vdevs,
1376eda14cbcSMatt Macy * instead of a different version of the same top-level vdev.
1377eda14cbcSMatt Macy */
1378eda14cbcSMatt Macy if (mvd->vdev_top == mvd) {
1379eda14cbcSMatt Macy uint64_t guid_delta = mvd->vdev_guid - cvd->vdev_guid;
1380eda14cbcSMatt Macy cvd->vdev_orig_guid = cvd->vdev_guid;
1381eda14cbcSMatt Macy cvd->vdev_guid += guid_delta;
1382eda14cbcSMatt Macy cvd->vdev_guid_sum += guid_delta;
1383eda14cbcSMatt Macy
1384eda14cbcSMatt Macy /*
1385eda14cbcSMatt Macy * If pool not set for autoexpand, we need to also preserve
1386eda14cbcSMatt Macy * mvd's asize to prevent automatic expansion of cvd.
1387eda14cbcSMatt Macy * Otherwise if we are adjusting the mirror by attaching and
1388eda14cbcSMatt Macy * detaching children of non-uniform sizes, the mirror could
1389eda14cbcSMatt Macy * autoexpand, unexpectedly requiring larger devices to
1390eda14cbcSMatt Macy * re-establish the mirror.
1391eda14cbcSMatt Macy */
1392eda14cbcSMatt Macy if (!cvd->vdev_spa->spa_autoexpand)
1393eda14cbcSMatt Macy cvd->vdev_asize = mvd->vdev_asize;
1394eda14cbcSMatt Macy }
1395eda14cbcSMatt Macy cvd->vdev_id = mvd->vdev_id;
1396eda14cbcSMatt Macy vdev_add_child(pvd, cvd);
1397eda14cbcSMatt Macy vdev_top_update(cvd->vdev_top, cvd->vdev_top);
1398eda14cbcSMatt Macy
1399eda14cbcSMatt Macy if (cvd == cvd->vdev_top)
1400eda14cbcSMatt Macy vdev_top_transfer(mvd, cvd);
1401eda14cbcSMatt Macy
1402eda14cbcSMatt Macy ASSERT(mvd->vdev_children == 0);
1403eda14cbcSMatt Macy vdev_free(mvd);
1404eda14cbcSMatt Macy }
1405eda14cbcSMatt Macy
1406eda14cbcSMatt Macy /*
1407eda14cbcSMatt Macy * Choose GCD for spa_gcd_alloc.
1408eda14cbcSMatt Macy */
1409eda14cbcSMatt Macy static uint64_t
vdev_gcd(uint64_t a,uint64_t b)1410eda14cbcSMatt Macy vdev_gcd(uint64_t a, uint64_t b)
1411eda14cbcSMatt Macy {
1412eda14cbcSMatt Macy while (b != 0) {
1413eda14cbcSMatt Macy uint64_t t = b;
1414eda14cbcSMatt Macy b = a % b;
1415eda14cbcSMatt Macy a = t;
1416eda14cbcSMatt Macy }
1417eda14cbcSMatt Macy return (a);
1418eda14cbcSMatt Macy }
1419eda14cbcSMatt Macy
1420eda14cbcSMatt Macy /*
1421eda14cbcSMatt Macy * Set spa_min_alloc and spa_gcd_alloc.
1422eda14cbcSMatt Macy */
1423eda14cbcSMatt Macy static void
vdev_spa_set_alloc(spa_t * spa,uint64_t min_alloc)1424eda14cbcSMatt Macy vdev_spa_set_alloc(spa_t *spa, uint64_t min_alloc)
1425eda14cbcSMatt Macy {
1426eda14cbcSMatt Macy if (min_alloc < spa->spa_min_alloc)
1427eda14cbcSMatt Macy spa->spa_min_alloc = min_alloc;
1428eda14cbcSMatt Macy if (spa->spa_gcd_alloc == INT_MAX) {
1429eda14cbcSMatt Macy spa->spa_gcd_alloc = min_alloc;
1430eda14cbcSMatt Macy } else {
1431eda14cbcSMatt Macy spa->spa_gcd_alloc = vdev_gcd(min_alloc,
1432eda14cbcSMatt Macy spa->spa_gcd_alloc);
1433eda14cbcSMatt Macy }
1434eda14cbcSMatt Macy }
1435eda14cbcSMatt Macy
1436eda14cbcSMatt Macy void
vdev_metaslab_group_create(vdev_t * vd)1437eda14cbcSMatt Macy vdev_metaslab_group_create(vdev_t *vd)
1438eda14cbcSMatt Macy {
1439eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
1440eda14cbcSMatt Macy
1441eda14cbcSMatt Macy /*
1442eda14cbcSMatt Macy * metaslab_group_create was delayed until allocation bias was available
1443eda14cbcSMatt Macy */
1444eda14cbcSMatt Macy if (vd->vdev_mg == NULL) {
1445eda14cbcSMatt Macy metaslab_class_t *mc;
1446eda14cbcSMatt Macy
1447eda14cbcSMatt Macy if (vd->vdev_islog && vd->vdev_alloc_bias == VDEV_BIAS_NONE)
1448eda14cbcSMatt Macy vd->vdev_alloc_bias = VDEV_BIAS_LOG;
1449eda14cbcSMatt Macy
1450eda14cbcSMatt Macy ASSERT3U(vd->vdev_islog, ==,
1451eda14cbcSMatt Macy (vd->vdev_alloc_bias == VDEV_BIAS_LOG));
1452eda14cbcSMatt Macy
1453eda14cbcSMatt Macy switch (vd->vdev_alloc_bias) {
1454eda14cbcSMatt Macy case VDEV_BIAS_LOG:
1455eda14cbcSMatt Macy mc = spa_log_class(spa);
1456eda14cbcSMatt Macy break;
1457eda14cbcSMatt Macy case VDEV_BIAS_SPECIAL:
1458eda14cbcSMatt Macy mc = spa_special_class(spa);
1459eda14cbcSMatt Macy break;
1460eda14cbcSMatt Macy case VDEV_BIAS_DEDUP:
1461eda14cbcSMatt Macy mc = spa_dedup_class(spa);
1462eda14cbcSMatt Macy break;
1463eda14cbcSMatt Macy default:
1464eda14cbcSMatt Macy mc = spa_normal_class(spa);
1465eda14cbcSMatt Macy }
1466eda14cbcSMatt Macy
1467eda14cbcSMatt Macy vd->vdev_mg = metaslab_group_create(mc, vd,
1468eda14cbcSMatt Macy spa->spa_alloc_count);
1469eda14cbcSMatt Macy
1470eda14cbcSMatt Macy if (!vd->vdev_islog) {
1471eda14cbcSMatt Macy vd->vdev_log_mg = metaslab_group_create(
1472eda14cbcSMatt Macy spa_embedded_log_class(spa), vd, 1);
1473eda14cbcSMatt Macy }
1474eda14cbcSMatt Macy
1475eda14cbcSMatt Macy /*
1476eda14cbcSMatt Macy * The spa ashift min/max only apply for the normal metaslab
1477eda14cbcSMatt Macy * class. Class destination is late binding so ashift boundary
1478eda14cbcSMatt Macy * setting had to wait until now.
1479eda14cbcSMatt Macy */
1480eda14cbcSMatt Macy if (vd->vdev_top == vd && vd->vdev_ashift != 0 &&
1481eda14cbcSMatt Macy mc == spa_normal_class(spa) && vd->vdev_aux == NULL) {
1482eda14cbcSMatt Macy if (vd->vdev_ashift > spa->spa_max_ashift)
1483eda14cbcSMatt Macy spa->spa_max_ashift = vd->vdev_ashift;
1484eda14cbcSMatt Macy if (vd->vdev_ashift < spa->spa_min_ashift)
1485eda14cbcSMatt Macy spa->spa_min_ashift = vd->vdev_ashift;
1486eda14cbcSMatt Macy
1487eda14cbcSMatt Macy uint64_t min_alloc = vdev_get_min_alloc(vd);
1488eda14cbcSMatt Macy vdev_spa_set_alloc(spa, min_alloc);
1489eda14cbcSMatt Macy }
1490eda14cbcSMatt Macy }
1491eda14cbcSMatt Macy }
1492eda14cbcSMatt Macy
1493eda14cbcSMatt Macy int
vdev_metaslab_init(vdev_t * vd,uint64_t txg)1494eda14cbcSMatt Macy vdev_metaslab_init(vdev_t *vd, uint64_t txg)
1495eda14cbcSMatt Macy {
1496eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
1497eda14cbcSMatt Macy uint64_t oldc = vd->vdev_ms_count;
1498eda14cbcSMatt Macy uint64_t newc = vd->vdev_asize >> vd->vdev_ms_shift;
1499eda14cbcSMatt Macy metaslab_t **mspp;
1500eda14cbcSMatt Macy int error;
1501eda14cbcSMatt Macy boolean_t expanding = (oldc != 0);
1502eda14cbcSMatt Macy
1503eda14cbcSMatt Macy ASSERT(txg == 0 || spa_config_held(spa, SCL_ALLOC, RW_WRITER));
1504eda14cbcSMatt Macy
1505eda14cbcSMatt Macy /*
1506eda14cbcSMatt Macy * This vdev is not being allocated from yet or is a hole.
1507eda14cbcSMatt Macy */
1508eda14cbcSMatt Macy if (vd->vdev_ms_shift == 0)
1509eda14cbcSMatt Macy return (0);
1510eda14cbcSMatt Macy
1511eda14cbcSMatt Macy ASSERT(!vd->vdev_ishole);
1512eda14cbcSMatt Macy
1513eda14cbcSMatt Macy ASSERT(oldc <= newc);
1514eda14cbcSMatt Macy
1515eda14cbcSMatt Macy mspp = vmem_zalloc(newc * sizeof (*mspp), KM_SLEEP);
1516eda14cbcSMatt Macy
1517eda14cbcSMatt Macy if (expanding) {
1518eda14cbcSMatt Macy memcpy(mspp, vd->vdev_ms, oldc * sizeof (*mspp));
1519eac7052fSMatt Macy vmem_free(vd->vdev_ms, oldc * sizeof (*mspp));
15202c48331dSMatt Macy }
1521eda14cbcSMatt Macy
1522eda14cbcSMatt Macy vd->vdev_ms = mspp;
1523eda14cbcSMatt Macy vd->vdev_ms_count = newc;
1524eda14cbcSMatt Macy
1525eda14cbcSMatt Macy for (uint64_t m = oldc; m < newc; m++) {
1526eda14cbcSMatt Macy uint64_t object = 0;
1527eda14cbcSMatt Macy /*
1528eda14cbcSMatt Macy * vdev_ms_array may be 0 if we are creating the "fake"
1529eda14cbcSMatt Macy * metaslabs for an indirect vdev for zdb's leak detection.
1530eda14cbcSMatt Macy * See zdb_leak_init().
1531eda14cbcSMatt Macy */
1532eda14cbcSMatt Macy if (txg == 0 && vd->vdev_ms_array != 0) {
1533eda14cbcSMatt Macy error = dmu_read(spa->spa_meta_objset,
1534eda14cbcSMatt Macy vd->vdev_ms_array,
1535eda14cbcSMatt Macy m * sizeof (uint64_t), sizeof (uint64_t), &object,
1536eda14cbcSMatt Macy DMU_READ_PREFETCH);
1537eda14cbcSMatt Macy if (error != 0) {
1538eda14cbcSMatt Macy vdev_dbgmsg(vd, "unable to read the metaslab "
1539eda14cbcSMatt Macy "array [error=%d]", error);
1540eda14cbcSMatt Macy return (error);
1541eda14cbcSMatt Macy }
1542eda14cbcSMatt Macy }
1543eda14cbcSMatt Macy
1544eda14cbcSMatt Macy error = metaslab_init(vd->vdev_mg, m, object, txg,
1545eda14cbcSMatt Macy &(vd->vdev_ms[m]));
1546eda14cbcSMatt Macy if (error != 0) {
1547eda14cbcSMatt Macy vdev_dbgmsg(vd, "metaslab_init failed [error=%d]",
1548eda14cbcSMatt Macy error);
1549eda14cbcSMatt Macy return (error);
1550eda14cbcSMatt Macy }
1551eda14cbcSMatt Macy }
1552eda14cbcSMatt Macy
1553eda14cbcSMatt Macy /*
1554eda14cbcSMatt Macy * Find the emptiest metaslab on the vdev and mark it for use for
1555eda14cbcSMatt Macy * embedded slog by moving it from the regular to the log metaslab
1556eda14cbcSMatt Macy * group.
1557eda14cbcSMatt Macy */
1558eda14cbcSMatt Macy if (vd->vdev_mg->mg_class == spa_normal_class(spa) &&
1559eda14cbcSMatt Macy vd->vdev_ms_count > zfs_embedded_slog_min_ms &&
1560eda14cbcSMatt Macy avl_is_empty(&vd->vdev_log_mg->mg_metaslab_tree)) {
1561eda14cbcSMatt Macy uint64_t slog_msid = 0;
1562eda14cbcSMatt Macy uint64_t smallest = UINT64_MAX;
1563eda14cbcSMatt Macy
1564eda14cbcSMatt Macy /*
1565eda14cbcSMatt Macy * Note, we only search the new metaslabs, because the old
1566eda14cbcSMatt Macy * (pre-existing) ones may be active (e.g. have non-empty
1567eda14cbcSMatt Macy * range_tree's), and we don't move them to the new
1568eda14cbcSMatt Macy * metaslab_t.
1569eda14cbcSMatt Macy */
1570eda14cbcSMatt Macy for (uint64_t m = oldc; m < newc; m++) {
1571eda14cbcSMatt Macy uint64_t alloc =
1572eda14cbcSMatt Macy space_map_allocated(vd->vdev_ms[m]->ms_sm);
1573eda14cbcSMatt Macy if (alloc < smallest) {
1574eda14cbcSMatt Macy slog_msid = m;
1575eda14cbcSMatt Macy smallest = alloc;
1576eda14cbcSMatt Macy }
1577eda14cbcSMatt Macy }
1578eda14cbcSMatt Macy metaslab_t *slog_ms = vd->vdev_ms[slog_msid];
1579eda14cbcSMatt Macy /*
1580eda14cbcSMatt Macy * The metaslab was marked as dirty at the end of
1581eda14cbcSMatt Macy * metaslab_init(). Remove it from the dirty list so that we
1582eda14cbcSMatt Macy * can uninitialize and reinitialize it to the new class.
1583eda14cbcSMatt Macy */
1584eda14cbcSMatt Macy if (txg != 0) {
1585eda14cbcSMatt Macy (void) txg_list_remove_this(&vd->vdev_ms_list,
1586eda14cbcSMatt Macy slog_ms, txg);
1587eda14cbcSMatt Macy }
1588eda14cbcSMatt Macy uint64_t sm_obj = space_map_object(slog_ms->ms_sm);
1589eda14cbcSMatt Macy metaslab_fini(slog_ms);
1590eda14cbcSMatt Macy VERIFY0(metaslab_init(vd->vdev_log_mg, slog_msid, sm_obj, txg,
1591eda14cbcSMatt Macy &vd->vdev_ms[slog_msid]));
1592eda14cbcSMatt Macy }
1593eda14cbcSMatt Macy
1594eda14cbcSMatt Macy if (txg == 0)
1595eda14cbcSMatt Macy spa_config_enter(spa, SCL_ALLOC, FTAG, RW_WRITER);
1596eda14cbcSMatt Macy
1597eda14cbcSMatt Macy /*
1598eda14cbcSMatt Macy * If the vdev is marked as non-allocating then don't
1599eda14cbcSMatt Macy * activate the metaslabs since we want to ensure that
1600eda14cbcSMatt Macy * no allocations are performed on this device.
1601eda14cbcSMatt Macy */
1602eda14cbcSMatt Macy if (vd->vdev_noalloc) {
1603eda14cbcSMatt Macy /* track non-allocating vdev space */
1604eda14cbcSMatt Macy spa->spa_nonallocating_dspace += spa_deflate(spa) ?
1605eda14cbcSMatt Macy vd->vdev_stat.vs_dspace : vd->vdev_stat.vs_space;
1606eda14cbcSMatt Macy } else if (!expanding) {
1607eda14cbcSMatt Macy metaslab_group_activate(vd->vdev_mg);
1608eda14cbcSMatt Macy if (vd->vdev_log_mg != NULL)
1609eda14cbcSMatt Macy metaslab_group_activate(vd->vdev_log_mg);
1610eda14cbcSMatt Macy }
1611eda14cbcSMatt Macy
1612eda14cbcSMatt Macy if (txg == 0)
1613eda14cbcSMatt Macy spa_config_exit(spa, SCL_ALLOC, FTAG);
1614eda14cbcSMatt Macy
1615eda14cbcSMatt Macy return (0);
1616eda14cbcSMatt Macy }
1617eda14cbcSMatt Macy
1618eda14cbcSMatt Macy void
vdev_metaslab_fini(vdev_t * vd)1619eda14cbcSMatt Macy vdev_metaslab_fini(vdev_t *vd)
1620eda14cbcSMatt Macy {
1621eda14cbcSMatt Macy if (vd->vdev_checkpoint_sm != NULL) {
1622eda14cbcSMatt Macy ASSERT(spa_feature_is_active(vd->vdev_spa,
1623eda14cbcSMatt Macy SPA_FEATURE_POOL_CHECKPOINT));
1624eda14cbcSMatt Macy space_map_close(vd->vdev_checkpoint_sm);
1625eda14cbcSMatt Macy /*
1626eda14cbcSMatt Macy * Even though we close the space map, we need to set its
1627eda14cbcSMatt Macy * pointer to NULL. The reason is that vdev_metaslab_fini()
1628eda14cbcSMatt Macy * may be called multiple times for certain operations
1629eda14cbcSMatt Macy * (i.e. when destroying a pool) so we need to ensure that
1630eda14cbcSMatt Macy * this clause never executes twice. This logic is similar
1631eda14cbcSMatt Macy * to the one used for the vdev_ms clause below.
1632eda14cbcSMatt Macy */
1633eda14cbcSMatt Macy vd->vdev_checkpoint_sm = NULL;
1634eda14cbcSMatt Macy }
1635eda14cbcSMatt Macy
1636eda14cbcSMatt Macy if (vd->vdev_ms != NULL) {
1637eda14cbcSMatt Macy metaslab_group_t *mg = vd->vdev_mg;
1638eda14cbcSMatt Macy
1639eda14cbcSMatt Macy metaslab_group_passivate(mg);
1640eda14cbcSMatt Macy if (vd->vdev_log_mg != NULL) {
1641eda14cbcSMatt Macy ASSERT(!vd->vdev_islog);
1642eda14cbcSMatt Macy metaslab_group_passivate(vd->vdev_log_mg);
1643eda14cbcSMatt Macy }
1644eda14cbcSMatt Macy
1645eda14cbcSMatt Macy uint64_t count = vd->vdev_ms_count;
1646eda14cbcSMatt Macy for (uint64_t m = 0; m < count; m++) {
1647eda14cbcSMatt Macy metaslab_t *msp = vd->vdev_ms[m];
1648eda14cbcSMatt Macy if (msp != NULL)
1649eda14cbcSMatt Macy metaslab_fini(msp);
1650eda14cbcSMatt Macy }
1651eda14cbcSMatt Macy vmem_free(vd->vdev_ms, count * sizeof (metaslab_t *));
1652eda14cbcSMatt Macy vd->vdev_ms = NULL;
1653eda14cbcSMatt Macy vd->vdev_ms_count = 0;
1654eda14cbcSMatt Macy
1655eda14cbcSMatt Macy for (int i = 0; i < RANGE_TREE_HISTOGRAM_SIZE; i++) {
1656eda14cbcSMatt Macy ASSERT0(mg->mg_histogram[i]);
1657eda14cbcSMatt Macy if (vd->vdev_log_mg != NULL)
1658eda14cbcSMatt Macy ASSERT0(vd->vdev_log_mg->mg_histogram[i]);
1659eda14cbcSMatt Macy }
1660eda14cbcSMatt Macy }
16617877fdebSMatt Macy ASSERT0(vd->vdev_ms_count);
16627877fdebSMatt Macy }
16637877fdebSMatt Macy
16647877fdebSMatt Macy typedef struct vdev_probe_stats {
16657877fdebSMatt Macy boolean_t vps_readable;
16667877fdebSMatt Macy boolean_t vps_writeable;
16677877fdebSMatt Macy boolean_t vps_zio_done_probe;
16687877fdebSMatt Macy int vps_flags;
16697877fdebSMatt Macy } vdev_probe_stats_t;
16707877fdebSMatt Macy
16717877fdebSMatt Macy static void
vdev_probe_done(zio_t * zio)16727877fdebSMatt Macy vdev_probe_done(zio_t *zio)
16737877fdebSMatt Macy {
16747877fdebSMatt Macy spa_t *spa = zio->io_spa;
16757877fdebSMatt Macy vdev_t *vd = zio->io_vd;
16767877fdebSMatt Macy vdev_probe_stats_t *vps = zio->io_private;
16777877fdebSMatt Macy
16787877fdebSMatt Macy ASSERT(vd->vdev_probe_zio != NULL);
16797877fdebSMatt Macy
16807877fdebSMatt Macy if (zio->io_type == ZIO_TYPE_READ) {
16817877fdebSMatt Macy if (zio->io_error == 0)
16827877fdebSMatt Macy vps->vps_readable = 1;
16837877fdebSMatt Macy if (zio->io_error == 0 && spa_writeable(spa)) {
16847877fdebSMatt Macy zio_nowait(zio_write_phys(vd->vdev_probe_zio, vd,
16857877fdebSMatt Macy zio->io_offset, zio->io_size, zio->io_abd,
16867877fdebSMatt Macy ZIO_CHECKSUM_OFF, vdev_probe_done, vps,
16877877fdebSMatt Macy ZIO_PRIORITY_SYNC_WRITE, vps->vps_flags, B_TRUE));
16887877fdebSMatt Macy } else {
16897877fdebSMatt Macy abd_free(zio->io_abd);
16907877fdebSMatt Macy }
16917877fdebSMatt Macy } else if (zio->io_type == ZIO_TYPE_WRITE) {
16927877fdebSMatt Macy if (zio->io_error == 0)
16937877fdebSMatt Macy vps->vps_writeable = 1;
16947877fdebSMatt Macy abd_free(zio->io_abd);
16957877fdebSMatt Macy } else if (zio->io_type == ZIO_TYPE_NULL) {
16967877fdebSMatt Macy zio_t *pio;
16977877fdebSMatt Macy zio_link_t *zl;
16987877fdebSMatt Macy
16997877fdebSMatt Macy vd->vdev_cant_read |= !vps->vps_readable;
17007877fdebSMatt Macy vd->vdev_cant_write |= !vps->vps_writeable;
17017877fdebSMatt Macy vdev_dbgmsg(vd, "probe done, cant_read=%u cant_write=%u",
17027877fdebSMatt Macy vd->vdev_cant_read, vd->vdev_cant_write);
17037877fdebSMatt Macy
17047877fdebSMatt Macy if (vdev_readable(vd) &&
17057877fdebSMatt Macy (vdev_writeable(vd) || !spa_writeable(spa))) {
17067877fdebSMatt Macy zio->io_error = 0;
17077877fdebSMatt Macy } else {
17087877fdebSMatt Macy ASSERT(zio->io_error != 0);
1709eda14cbcSMatt Macy vdev_dbgmsg(vd, "failed probe");
1710eda14cbcSMatt Macy (void) zfs_ereport_post(FM_EREPORT_ZFS_PROBE_FAILURE,
1711eda14cbcSMatt Macy spa, vd, NULL, NULL, 0);
17127877fdebSMatt Macy zio->io_error = SET_ERROR(ENXIO);
1713eda14cbcSMatt Macy
1714eda14cbcSMatt Macy /*
17157877fdebSMatt Macy * If this probe was initiated from zio pipeline, then
17167877fdebSMatt Macy * change the state in a spa_async_request. Probes that
17177877fdebSMatt Macy * were initiated from a vdev_open can change the state
17187877fdebSMatt Macy * as part of the open call.
17197877fdebSMatt Macy */
17207877fdebSMatt Macy if (vps->vps_zio_done_probe) {
17217877fdebSMatt Macy vd->vdev_fault_wanted = B_TRUE;
1722eda14cbcSMatt Macy spa_async_request(spa, SPA_ASYNC_FAULT_VDEV);
1723eda14cbcSMatt Macy }
1724eda14cbcSMatt Macy }
1725eda14cbcSMatt Macy
1726eda14cbcSMatt Macy mutex_enter(&vd->vdev_probe_lock);
1727eda14cbcSMatt Macy ASSERT(vd->vdev_probe_zio == zio);
1728eda14cbcSMatt Macy vd->vdev_probe_zio = NULL;
1729eda14cbcSMatt Macy mutex_exit(&vd->vdev_probe_lock);
1730eda14cbcSMatt Macy
1731eda14cbcSMatt Macy zl = NULL;
1732eda14cbcSMatt Macy while ((pio = zio_walk_parents(zio, &zl)) != NULL)
1733eda14cbcSMatt Macy if (!vdev_accessible(vd, pio))
1734eda14cbcSMatt Macy pio->io_error = SET_ERROR(ENXIO);
1735eda14cbcSMatt Macy
1736eda14cbcSMatt Macy kmem_free(vps, sizeof (*vps));
1737eda14cbcSMatt Macy }
1738eda14cbcSMatt Macy }
1739eda14cbcSMatt Macy
17402c48331dSMatt Macy /*
17412c48331dSMatt Macy * Determine whether this device is accessible.
17422c48331dSMatt Macy *
17432c48331dSMatt Macy * Read and write to several known locations: the pad regions of each
17442c48331dSMatt Macy * vdev label but the first, which we leave alone in case it contains
17452c48331dSMatt Macy * a VTOC.
17462c48331dSMatt Macy */
17472c48331dSMatt Macy zio_t *
vdev_probe(vdev_t * vd,zio_t * zio)17482c48331dSMatt Macy vdev_probe(vdev_t *vd, zio_t *zio)
17492c48331dSMatt Macy {
17502c48331dSMatt Macy spa_t *spa = vd->vdev_spa;
17512c48331dSMatt Macy vdev_probe_stats_t *vps = NULL;
17522c48331dSMatt Macy zio_t *pio;
17532c48331dSMatt Macy
17542c48331dSMatt Macy ASSERT(vd->vdev_ops->vdev_op_leaf);
17552c48331dSMatt Macy
17562c48331dSMatt Macy /*
17572c48331dSMatt Macy * Don't probe the probe.
17582c48331dSMatt Macy */
17592c48331dSMatt Macy if (zio && (zio->io_flags & ZIO_FLAG_PROBE))
17602c48331dSMatt Macy return (NULL);
17612c48331dSMatt Macy
17622c48331dSMatt Macy /*
17632c48331dSMatt Macy * To prevent 'probe storms' when a device fails, we create
17642c48331dSMatt Macy * just one probe i/o at a time. All zios that want to probe
17652c48331dSMatt Macy * this vdev will become parents of the probe io.
17662c48331dSMatt Macy */
17672c48331dSMatt Macy mutex_enter(&vd->vdev_probe_lock);
17682c48331dSMatt Macy
17692c48331dSMatt Macy if ((pio = vd->vdev_probe_zio) == NULL) {
17702c48331dSMatt Macy vps = kmem_zalloc(sizeof (*vps), KM_SLEEP);
17712c48331dSMatt Macy
1772eda14cbcSMatt Macy vps->vps_flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_PROBE |
1773eda14cbcSMatt Macy ZIO_FLAG_DONT_AGGREGATE | ZIO_FLAG_TRYHARD;
1774eda14cbcSMatt Macy vps->vps_zio_done_probe = (zio != NULL);
1775eda14cbcSMatt Macy
1776eda14cbcSMatt Macy if (spa_config_held(spa, SCL_ZIO, RW_WRITER)) {
1777eda14cbcSMatt Macy /*
1778eda14cbcSMatt Macy * vdev_cant_read and vdev_cant_write can only
1779eda14cbcSMatt Macy * transition from TRUE to FALSE when we have the
1780eda14cbcSMatt Macy * SCL_ZIO lock as writer; otherwise they can only
1781eda14cbcSMatt Macy * transition from FALSE to TRUE. This ensures that
1782eda14cbcSMatt Macy * any zio looking at these values can assume that
1783eda14cbcSMatt Macy * failures persist for the life of the I/O. That's
1784eda14cbcSMatt Macy * important because when a device has intermittent
1785eda14cbcSMatt Macy * connectivity problems, we want to ensure that
1786eda14cbcSMatt Macy * they're ascribed to the device (ENXIO) and not
1787eda14cbcSMatt Macy * the zio (EIO).
1788eda14cbcSMatt Macy *
1789eda14cbcSMatt Macy * Since we hold SCL_ZIO as writer here, clear both
1790eda14cbcSMatt Macy * values so the probe can reevaluate from first
1791eda14cbcSMatt Macy * principles.
1792eda14cbcSMatt Macy */
1793eda14cbcSMatt Macy vps->vps_flags |= ZIO_FLAG_CONFIG_WRITER;
1794eda14cbcSMatt Macy vd->vdev_cant_read = B_FALSE;
1795eda14cbcSMatt Macy vd->vdev_cant_write = B_FALSE;
1796eda14cbcSMatt Macy }
1797eda14cbcSMatt Macy
1798eda14cbcSMatt Macy vd->vdev_probe_zio = pio = zio_null(NULL, spa, vd,
1799eda14cbcSMatt Macy vdev_probe_done, vps,
1800eda14cbcSMatt Macy vps->vps_flags | ZIO_FLAG_DONT_PROPAGATE);
1801eda14cbcSMatt Macy }
1802eda14cbcSMatt Macy
1803eda14cbcSMatt Macy if (zio != NULL)
1804eda14cbcSMatt Macy zio_add_child(zio, pio);
1805eda14cbcSMatt Macy
1806eda14cbcSMatt Macy mutex_exit(&vd->vdev_probe_lock);
1807eda14cbcSMatt Macy
1808eda14cbcSMatt Macy if (vps == NULL) {
1809eda14cbcSMatt Macy ASSERT(zio != NULL);
1810eda14cbcSMatt Macy return (NULL);
1811eda14cbcSMatt Macy }
1812eda14cbcSMatt Macy
1813eda14cbcSMatt Macy for (int l = 1; l < VDEV_LABELS; l++) {
1814eda14cbcSMatt Macy zio_nowait(zio_read_phys(pio, vd,
1815eda14cbcSMatt Macy vdev_label_offset(vd->vdev_psize, l,
1816eda14cbcSMatt Macy offsetof(vdev_label_t, vl_be)), VDEV_PAD_SIZE,
1817eda14cbcSMatt Macy abd_alloc_for_io(VDEV_PAD_SIZE, B_TRUE),
1818eda14cbcSMatt Macy ZIO_CHECKSUM_OFF, vdev_probe_done, vps,
1819eda14cbcSMatt Macy ZIO_PRIORITY_SYNC_READ, vps->vps_flags, B_TRUE));
1820eda14cbcSMatt Macy }
1821eda14cbcSMatt Macy
1822eda14cbcSMatt Macy if (zio == NULL)
1823eda14cbcSMatt Macy return (pio);
1824eda14cbcSMatt Macy
1825eda14cbcSMatt Macy zio_nowait(pio);
1826eda14cbcSMatt Macy return (NULL);
1827eda14cbcSMatt Macy }
1828eda14cbcSMatt Macy
1829eda14cbcSMatt Macy static void
vdev_load_child(void * arg)1830eda14cbcSMatt Macy vdev_load_child(void *arg)
1831eda14cbcSMatt Macy {
1832eda14cbcSMatt Macy vdev_t *vd = arg;
1833eda14cbcSMatt Macy
1834eda14cbcSMatt Macy vd->vdev_load_error = vdev_load(vd);
1835eda14cbcSMatt Macy }
1836eda14cbcSMatt Macy
1837eda14cbcSMatt Macy static void
vdev_open_child(void * arg)1838eda14cbcSMatt Macy vdev_open_child(void *arg)
1839eda14cbcSMatt Macy {
1840eda14cbcSMatt Macy vdev_t *vd = arg;
1841eda14cbcSMatt Macy
1842eda14cbcSMatt Macy vd->vdev_open_thread = curthread;
1843eda14cbcSMatt Macy vd->vdev_open_error = vdev_open(vd);
1844eda14cbcSMatt Macy vd->vdev_open_thread = NULL;
1845eda14cbcSMatt Macy }
1846eda14cbcSMatt Macy
1847eda14cbcSMatt Macy static boolean_t
vdev_uses_zvols(vdev_t * vd)1848eda14cbcSMatt Macy vdev_uses_zvols(vdev_t *vd)
1849eda14cbcSMatt Macy {
1850eda14cbcSMatt Macy #ifdef _KERNEL
1851eda14cbcSMatt Macy if (zvol_is_zvol(vd->vdev_path))
1852eda14cbcSMatt Macy return (B_TRUE);
1853eda14cbcSMatt Macy #endif
1854eda14cbcSMatt Macy
1855eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
1856eda14cbcSMatt Macy if (vdev_uses_zvols(vd->vdev_child[c]))
1857eda14cbcSMatt Macy return (B_TRUE);
1858eda14cbcSMatt Macy
1859eda14cbcSMatt Macy return (B_FALSE);
1860eda14cbcSMatt Macy }
1861eda14cbcSMatt Macy
1862eda14cbcSMatt Macy /*
1863eda14cbcSMatt Macy * Returns B_TRUE if the passed child should be opened.
1864eda14cbcSMatt Macy */
1865eda14cbcSMatt Macy static boolean_t
vdev_default_open_children_func(vdev_t * vd)1866eda14cbcSMatt Macy vdev_default_open_children_func(vdev_t *vd)
1867eda14cbcSMatt Macy {
1868eda14cbcSMatt Macy (void) vd;
1869eda14cbcSMatt Macy return (B_TRUE);
1870eda14cbcSMatt Macy }
1871eda14cbcSMatt Macy
1872eda14cbcSMatt Macy /*
1873eda14cbcSMatt Macy * Open the requested child vdevs. If any of the leaf vdevs are using
1874eda14cbcSMatt Macy * a ZFS volume then do the opens in a single thread. This avoids a
1875eda14cbcSMatt Macy * deadlock when the current thread is holding the spa_namespace_lock.
1876eda14cbcSMatt Macy */
1877eda14cbcSMatt Macy static void
vdev_open_children_impl(vdev_t * vd,vdev_open_children_func_t * open_func)1878eda14cbcSMatt Macy vdev_open_children_impl(vdev_t *vd, vdev_open_children_func_t *open_func)
1879eda14cbcSMatt Macy {
1880eda14cbcSMatt Macy int children = vd->vdev_children;
1881eda14cbcSMatt Macy
1882eda14cbcSMatt Macy taskq_t *tq = taskq_create("vdev_open", children, minclsyspri,
1883eda14cbcSMatt Macy children, children, TASKQ_PREPOPULATE);
1884eda14cbcSMatt Macy vd->vdev_nonrot = B_TRUE;
1885eda14cbcSMatt Macy
1886eda14cbcSMatt Macy for (int c = 0; c < children; c++) {
1887eda14cbcSMatt Macy vdev_t *cvd = vd->vdev_child[c];
1888eda14cbcSMatt Macy
1889eda14cbcSMatt Macy if (open_func(cvd) == B_FALSE)
1890eda14cbcSMatt Macy continue;
1891eda14cbcSMatt Macy
1892eda14cbcSMatt Macy if (tq == NULL || vdev_uses_zvols(vd)) {
1893eda14cbcSMatt Macy cvd->vdev_open_error = vdev_open(cvd);
1894eda14cbcSMatt Macy } else {
1895eda14cbcSMatt Macy VERIFY(taskq_dispatch(tq, vdev_open_child,
1896eda14cbcSMatt Macy cvd, TQ_SLEEP) != TASKQID_INVALID);
1897eda14cbcSMatt Macy }
1898eda14cbcSMatt Macy
1899eda14cbcSMatt Macy vd->vdev_nonrot &= cvd->vdev_nonrot;
1900eda14cbcSMatt Macy }
1901eda14cbcSMatt Macy
1902eda14cbcSMatt Macy if (tq != NULL) {
1903eda14cbcSMatt Macy taskq_wait(tq);
1904eda14cbcSMatt Macy taskq_destroy(tq);
1905eda14cbcSMatt Macy }
1906eda14cbcSMatt Macy }
1907eda14cbcSMatt Macy
1908eda14cbcSMatt Macy /*
1909eda14cbcSMatt Macy * Open all child vdevs.
1910eda14cbcSMatt Macy */
1911eda14cbcSMatt Macy void
vdev_open_children(vdev_t * vd)1912eda14cbcSMatt Macy vdev_open_children(vdev_t *vd)
1913eda14cbcSMatt Macy {
1914eda14cbcSMatt Macy vdev_open_children_impl(vd, vdev_default_open_children_func);
1915eda14cbcSMatt Macy }
1916eda14cbcSMatt Macy
1917eda14cbcSMatt Macy /*
1918eda14cbcSMatt Macy * Conditionally open a subset of child vdevs.
1919eda14cbcSMatt Macy */
1920eda14cbcSMatt Macy void
vdev_open_children_subset(vdev_t * vd,vdev_open_children_func_t * open_func)1921eda14cbcSMatt Macy vdev_open_children_subset(vdev_t *vd, vdev_open_children_func_t *open_func)
1922eda14cbcSMatt Macy {
1923eda14cbcSMatt Macy vdev_open_children_impl(vd, open_func);
1924eda14cbcSMatt Macy }
1925eda14cbcSMatt Macy
1926eda14cbcSMatt Macy /*
1927eda14cbcSMatt Macy * Compute the raidz-deflation ratio. Note, we hard-code 128k (1 << 17)
1928eda14cbcSMatt Macy * because it is the "typical" blocksize. Even though SPA_MAXBLOCKSIZE
19292c48331dSMatt Macy * changed, this algorithm can not change, otherwise it would inconsistently
19302c48331dSMatt Macy * account for existing bp's. We also hard-code txg 0 for the same reason
19312c48331dSMatt Macy * since expanded RAIDZ vdevs can use a different asize for different birth
19322c48331dSMatt Macy * txg's.
19332c48331dSMatt Macy */
19342c48331dSMatt Macy static void
vdev_set_deflate_ratio(vdev_t * vd)19352c48331dSMatt Macy vdev_set_deflate_ratio(vdev_t *vd)
1936eda14cbcSMatt Macy {
1937eda14cbcSMatt Macy if (vd == vd->vdev_top && !vd->vdev_ishole && vd->vdev_ashift != 0) {
19382c48331dSMatt Macy vd->vdev_deflate_ratio = (1 << 17) /
19392c48331dSMatt Macy (vdev_psize_to_asize_txg(vd, 1 << 17, 0) >>
1940eda14cbcSMatt Macy SPA_MINBLOCKSHIFT);
1941eda14cbcSMatt Macy }
1942eda14cbcSMatt Macy }
1943eda14cbcSMatt Macy
1944eda14cbcSMatt Macy /*
1945eda14cbcSMatt Macy * Choose the best of two ashifts, preferring one between logical ashift
1946eda14cbcSMatt Macy * (absolute minimum) and administrator defined maximum, otherwise take
1947eda14cbcSMatt Macy * the biggest of the two.
19482c48331dSMatt Macy */
19492c48331dSMatt Macy uint64_t
vdev_best_ashift(uint64_t logical,uint64_t a,uint64_t b)19502c48331dSMatt Macy vdev_best_ashift(uint64_t logical, uint64_t a, uint64_t b)
19512c48331dSMatt Macy {
19522c48331dSMatt Macy if (a > logical && a <= zfs_vdev_max_auto_ashift) {
19532c48331dSMatt Macy if (b <= logical || b > zfs_vdev_max_auto_ashift)
19542c48331dSMatt Macy return (a);
19552c48331dSMatt Macy else
19562c48331dSMatt Macy return (MAX(a, b));
19572c48331dSMatt Macy } else if (b <= logical || b > zfs_vdev_max_auto_ashift)
19582c48331dSMatt Macy return (MAX(a, b));
19592c48331dSMatt Macy return (b);
19602c48331dSMatt Macy }
19612c48331dSMatt Macy
19622c48331dSMatt Macy /*
19632c48331dSMatt Macy * Maximize performance by inflating the configured ashift for top level
19642c48331dSMatt Macy * vdevs to be as close to the physical ashift as possible while maintaining
19652c48331dSMatt Macy * administrator defined limits and ensuring it doesn't go below the
1966eda14cbcSMatt Macy * logical ashift.
1967eda14cbcSMatt Macy */
1968eda14cbcSMatt Macy static void
vdev_ashift_optimize(vdev_t * vd)1969eda14cbcSMatt Macy vdev_ashift_optimize(vdev_t *vd)
1970eda14cbcSMatt Macy {
1971eda14cbcSMatt Macy ASSERT(vd == vd->vdev_top);
1972eda14cbcSMatt Macy
1973eda14cbcSMatt Macy if (vd->vdev_ashift < vd->vdev_physical_ashift &&
1974eda14cbcSMatt Macy vd->vdev_physical_ashift <= zfs_vdev_max_auto_ashift) {
1975eda14cbcSMatt Macy vd->vdev_ashift = MIN(
1976eda14cbcSMatt Macy MAX(zfs_vdev_max_auto_ashift, vd->vdev_ashift),
1977eda14cbcSMatt Macy MAX(zfs_vdev_min_auto_ashift,
1978eac7052fSMatt Macy vd->vdev_physical_ashift));
1979eac7052fSMatt Macy } else {
19802c48331dSMatt Macy /*
1981eda14cbcSMatt Macy * If the logical and physical ashifts are the same, then
1982eda14cbcSMatt Macy * we ensure that the top-level vdev's ashift is not smaller
1983eda14cbcSMatt Macy * than our minimum ashift value. For the unusual case
1984eda14cbcSMatt Macy * where logical ashift > physical ashift, we can't cap
1985eda14cbcSMatt Macy * the calculated ashift based on max ashift as that
1986eda14cbcSMatt Macy * would cause failures.
1987eda14cbcSMatt Macy * We still check if we need to increase it to match
1988eda14cbcSMatt Macy * the min ashift.
1989eda14cbcSMatt Macy */
1990eda14cbcSMatt Macy vd->vdev_ashift = MAX(zfs_vdev_min_auto_ashift,
1991eda14cbcSMatt Macy vd->vdev_ashift);
1992eda14cbcSMatt Macy }
1993eda14cbcSMatt Macy }
1994eda14cbcSMatt Macy
1995eda14cbcSMatt Macy /*
1996eda14cbcSMatt Macy * Prepare a virtual device for access.
1997eda14cbcSMatt Macy */
1998eda14cbcSMatt Macy int
vdev_open(vdev_t * vd)1999eda14cbcSMatt Macy vdev_open(vdev_t *vd)
2000eda14cbcSMatt Macy {
2001eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
2002eda14cbcSMatt Macy int error;
2003eda14cbcSMatt Macy uint64_t osize = 0;
2004eda14cbcSMatt Macy uint64_t max_osize = 0;
2005eda14cbcSMatt Macy uint64_t asize, max_asize, psize;
2006eda14cbcSMatt Macy uint64_t logical_ashift = 0;
2007eda14cbcSMatt Macy uint64_t physical_ashift = 0;
2008eda14cbcSMatt Macy
2009eda14cbcSMatt Macy ASSERT(vd->vdev_open_thread == curthread ||
2010eda14cbcSMatt Macy spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
2011eda14cbcSMatt Macy ASSERT(vd->vdev_state == VDEV_STATE_CLOSED ||
2012eda14cbcSMatt Macy vd->vdev_state == VDEV_STATE_CANT_OPEN ||
2013eda14cbcSMatt Macy vd->vdev_state == VDEV_STATE_OFFLINE);
2014eda14cbcSMatt Macy
2015eda14cbcSMatt Macy vd->vdev_stat.vs_aux = VDEV_AUX_NONE;
2016eda14cbcSMatt Macy vd->vdev_cant_read = B_FALSE;
2017eda14cbcSMatt Macy vd->vdev_cant_write = B_FALSE;
2018eda14cbcSMatt Macy vd->vdev_min_asize = vdev_get_min_asize(vd);
2019eda14cbcSMatt Macy
20207877fdebSMatt Macy /*
20217877fdebSMatt Macy * If this vdev is not removed, check its fault status. If it's
20227877fdebSMatt Macy * faulted, bail out of the open.
20237877fdebSMatt Macy */
20247877fdebSMatt Macy if (!vd->vdev_removed && vd->vdev_faulted) {
20257877fdebSMatt Macy ASSERT(vd->vdev_children == 0);
20267877fdebSMatt Macy ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED ||
20277877fdebSMatt Macy vd->vdev_label_aux == VDEV_AUX_EXTERNAL);
20287877fdebSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED,
20297877fdebSMatt Macy vd->vdev_label_aux);
2030eda14cbcSMatt Macy return (SET_ERROR(ENXIO));
2031eda14cbcSMatt Macy } else if (vd->vdev_offline) {
2032eda14cbcSMatt Macy ASSERT(vd->vdev_children == 0);
2033eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, VDEV_AUX_NONE);
2034eda14cbcSMatt Macy return (SET_ERROR(ENXIO));
2035eda14cbcSMatt Macy }
2036eda14cbcSMatt Macy
2037eda14cbcSMatt Macy error = vd->vdev_ops->vdev_op_open(vd, &osize, &max_osize,
2038eda14cbcSMatt Macy &logical_ashift, &physical_ashift);
2039eda14cbcSMatt Macy
2040eda14cbcSMatt Macy /* Keep the device in removed state if unplugged */
2041eda14cbcSMatt Macy if (error == ENOENT && vd->vdev_removed) {
2042eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_REMOVED,
2043eda14cbcSMatt Macy VDEV_AUX_NONE);
2044eda14cbcSMatt Macy return (error);
2045eda14cbcSMatt Macy }
2046eda14cbcSMatt Macy
2047eda14cbcSMatt Macy /*
2048eda14cbcSMatt Macy * Physical volume size should never be larger than its max size, unless
2049eda14cbcSMatt Macy * the disk has shrunk while we were reading it or the device is buggy
2050eda14cbcSMatt Macy * or damaged: either way it's not safe for use, bail out of the open.
2051eda14cbcSMatt Macy */
2052eda14cbcSMatt Macy if (osize > max_osize) {
2053eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
2054eda14cbcSMatt Macy VDEV_AUX_OPEN_FAILED);
2055eda14cbcSMatt Macy return (SET_ERROR(ENXIO));
2056eda14cbcSMatt Macy }
2057eda14cbcSMatt Macy
2058eda14cbcSMatt Macy /*
2059eda14cbcSMatt Macy * Reset the vdev_reopening flag so that we actually close
2060eda14cbcSMatt Macy * the vdev on error.
2061eda14cbcSMatt Macy */
2062eda14cbcSMatt Macy vd->vdev_reopening = B_FALSE;
2063eda14cbcSMatt Macy if (zio_injection_enabled && error == 0)
2064eda14cbcSMatt Macy error = zio_handle_device_injection(vd, NULL, SET_ERROR(ENXIO));
2065eda14cbcSMatt Macy
2066eda14cbcSMatt Macy if (error) {
2067eda14cbcSMatt Macy if (vd->vdev_removed &&
2068eda14cbcSMatt Macy vd->vdev_stat.vs_aux != VDEV_AUX_OPEN_FAILED)
2069eda14cbcSMatt Macy vd->vdev_removed = B_FALSE;
2070eda14cbcSMatt Macy
2071eda14cbcSMatt Macy if (vd->vdev_stat.vs_aux == VDEV_AUX_CHILDREN_OFFLINE) {
2072eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE,
2073eda14cbcSMatt Macy vd->vdev_stat.vs_aux);
2074eda14cbcSMatt Macy } else {
2075eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
2076eda14cbcSMatt Macy vd->vdev_stat.vs_aux);
2077eda14cbcSMatt Macy }
2078eda14cbcSMatt Macy return (error);
2079eda14cbcSMatt Macy }
2080eda14cbcSMatt Macy
2081eda14cbcSMatt Macy vd->vdev_removed = B_FALSE;
2082eda14cbcSMatt Macy
2083eda14cbcSMatt Macy /*
2084eda14cbcSMatt Macy * Recheck the faulted flag now that we have confirmed that
2085eda14cbcSMatt Macy * the vdev is accessible. If we're faulted, bail.
2086eda14cbcSMatt Macy */
2087eda14cbcSMatt Macy if (vd->vdev_faulted) {
2088eda14cbcSMatt Macy ASSERT(vd->vdev_children == 0);
2089eda14cbcSMatt Macy ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED ||
2090eda14cbcSMatt Macy vd->vdev_label_aux == VDEV_AUX_EXTERNAL);
2091eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED,
2092eda14cbcSMatt Macy vd->vdev_label_aux);
2093eda14cbcSMatt Macy return (SET_ERROR(ENXIO));
2094eda14cbcSMatt Macy }
2095eda14cbcSMatt Macy
2096eda14cbcSMatt Macy if (vd->vdev_degraded) {
2097eda14cbcSMatt Macy ASSERT(vd->vdev_children == 0);
2098eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED,
2099eda14cbcSMatt Macy VDEV_AUX_ERR_EXCEEDED);
2100eda14cbcSMatt Macy } else {
2101eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_HEALTHY, 0);
2102eda14cbcSMatt Macy }
2103eda14cbcSMatt Macy
2104eda14cbcSMatt Macy /*
2105eda14cbcSMatt Macy * For hole or missing vdevs we just return success.
2106eda14cbcSMatt Macy */
2107eda14cbcSMatt Macy if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops)
2108eda14cbcSMatt Macy return (0);
2109eda14cbcSMatt Macy
2110eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++) {
2111eda14cbcSMatt Macy if (vd->vdev_child[c]->vdev_state != VDEV_STATE_HEALTHY) {
2112eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED,
2113eda14cbcSMatt Macy VDEV_AUX_NONE);
2114eda14cbcSMatt Macy break;
2115eda14cbcSMatt Macy }
2116eda14cbcSMatt Macy }
2117eda14cbcSMatt Macy
2118eda14cbcSMatt Macy osize = P2ALIGN(osize, (uint64_t)sizeof (vdev_label_t));
2119eda14cbcSMatt Macy max_osize = P2ALIGN(max_osize, (uint64_t)sizeof (vdev_label_t));
2120eda14cbcSMatt Macy
2121eda14cbcSMatt Macy if (vd->vdev_children == 0) {
2122eda14cbcSMatt Macy if (osize < SPA_MINDEVSIZE) {
2123eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
2124eda14cbcSMatt Macy VDEV_AUX_TOO_SMALL);
2125eda14cbcSMatt Macy return (SET_ERROR(EOVERFLOW));
2126eda14cbcSMatt Macy }
2127eda14cbcSMatt Macy psize = osize;
2128eda14cbcSMatt Macy asize = osize - (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE);
2129eda14cbcSMatt Macy max_asize = max_osize - (VDEV_LABEL_START_SIZE +
2130eda14cbcSMatt Macy VDEV_LABEL_END_SIZE);
2131eda14cbcSMatt Macy } else {
2132eda14cbcSMatt Macy if (vd->vdev_parent != NULL && osize < SPA_MINDEVSIZE -
2133eda14cbcSMatt Macy (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE)) {
2134eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
2135eda14cbcSMatt Macy VDEV_AUX_TOO_SMALL);
2136eda14cbcSMatt Macy return (SET_ERROR(EOVERFLOW));
2137eda14cbcSMatt Macy }
2138eda14cbcSMatt Macy psize = 0;
2139eda14cbcSMatt Macy asize = osize;
2140eda14cbcSMatt Macy max_asize = max_osize;
2141eda14cbcSMatt Macy }
2142eda14cbcSMatt Macy
2143eda14cbcSMatt Macy /*
2144eda14cbcSMatt Macy * If the vdev was expanded, record this so that we can re-create the
2145eda14cbcSMatt Macy * uberblock rings in labels {2,3}, during the next sync.
2146eda14cbcSMatt Macy */
2147eda14cbcSMatt Macy if ((psize > vd->vdev_psize) && (vd->vdev_psize != 0))
2148eda14cbcSMatt Macy vd->vdev_copy_uberblocks = B_TRUE;
2149eda14cbcSMatt Macy
2150eda14cbcSMatt Macy vd->vdev_psize = psize;
2151eda14cbcSMatt Macy
2152eda14cbcSMatt Macy /*
2153eda14cbcSMatt Macy * Make sure the allocatable size hasn't shrunk too much.
2154eda14cbcSMatt Macy */
2155eda14cbcSMatt Macy if (asize < vd->vdev_min_asize) {
2156eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
2157eda14cbcSMatt Macy VDEV_AUX_BAD_LABEL);
2158eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
2159eda14cbcSMatt Macy }
2160eda14cbcSMatt Macy
2161eda14cbcSMatt Macy /*
2162eda14cbcSMatt Macy * We can always set the logical/physical ashift members since
2163eda14cbcSMatt Macy * their values are only used to calculate the vdev_ashift when
2164eda14cbcSMatt Macy * the device is first added to the config. These values should
2165eda14cbcSMatt Macy * not be used for anything else since they may change whenever
2166eda14cbcSMatt Macy * the device is reopened and we don't store them in the label.
2167eda14cbcSMatt Macy */
2168eda14cbcSMatt Macy vd->vdev_physical_ashift =
2169eda14cbcSMatt Macy MAX(physical_ashift, vd->vdev_physical_ashift);
2170eda14cbcSMatt Macy vd->vdev_logical_ashift = MAX(logical_ashift,
2171eda14cbcSMatt Macy vd->vdev_logical_ashift);
2172eda14cbcSMatt Macy
2173eda14cbcSMatt Macy if (vd->vdev_asize == 0) {
2174eda14cbcSMatt Macy /*
2175eda14cbcSMatt Macy * This is the first-ever open, so use the computed values.
2176eda14cbcSMatt Macy * For compatibility, a different ashift can be requested.
2177eda14cbcSMatt Macy */
2178eda14cbcSMatt Macy vd->vdev_asize = asize;
2179eda14cbcSMatt Macy vd->vdev_max_asize = max_asize;
2180eda14cbcSMatt Macy
2181eda14cbcSMatt Macy /*
2182eda14cbcSMatt Macy * If the vdev_ashift was not overridden at creation time,
2183eda14cbcSMatt Macy * then set it the logical ashift and optimize the ashift.
2184eda14cbcSMatt Macy */
2185eda14cbcSMatt Macy if (vd->vdev_ashift == 0) {
2186eda14cbcSMatt Macy vd->vdev_ashift = vd->vdev_logical_ashift;
2187eda14cbcSMatt Macy
2188eda14cbcSMatt Macy if (vd->vdev_logical_ashift > ASHIFT_MAX) {
2189eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
2190eda14cbcSMatt Macy VDEV_AUX_ASHIFT_TOO_BIG);
2191eda14cbcSMatt Macy return (SET_ERROR(EDOM));
2192eda14cbcSMatt Macy }
2193eda14cbcSMatt Macy
2194eda14cbcSMatt Macy if (vd->vdev_top == vd && vd->vdev_attaching == B_FALSE)
2195eda14cbcSMatt Macy vdev_ashift_optimize(vd);
2196eda14cbcSMatt Macy vd->vdev_attaching = B_FALSE;
2197eda14cbcSMatt Macy }
2198eda14cbcSMatt Macy if (vd->vdev_ashift != 0 && (vd->vdev_ashift < ASHIFT_MIN ||
2199eda14cbcSMatt Macy vd->vdev_ashift > ASHIFT_MAX)) {
2200eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
2201eda14cbcSMatt Macy VDEV_AUX_BAD_ASHIFT);
2202eda14cbcSMatt Macy return (SET_ERROR(EDOM));
2203eda14cbcSMatt Macy }
2204eda14cbcSMatt Macy } else {
2205eda14cbcSMatt Macy /*
2206eda14cbcSMatt Macy * Make sure the alignment required hasn't increased.
2207eda14cbcSMatt Macy */
2208eda14cbcSMatt Macy if (vd->vdev_ashift > vd->vdev_top->vdev_ashift &&
2209eda14cbcSMatt Macy vd->vdev_ops->vdev_op_leaf) {
2210eda14cbcSMatt Macy (void) zfs_ereport_post(
2211eda14cbcSMatt Macy FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT,
2212eda14cbcSMatt Macy spa, vd, NULL, NULL, 0);
2213eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
2214eda14cbcSMatt Macy VDEV_AUX_BAD_LABEL);
2215eda14cbcSMatt Macy return (SET_ERROR(EDOM));
2216eda14cbcSMatt Macy }
2217eda14cbcSMatt Macy vd->vdev_max_asize = max_asize;
2218eda14cbcSMatt Macy }
2219eda14cbcSMatt Macy
2220eda14cbcSMatt Macy /*
2221eda14cbcSMatt Macy * If all children are healthy we update asize if either:
2222eda14cbcSMatt Macy * The asize has increased, due to a device expansion caused by dynamic
2223eda14cbcSMatt Macy * LUN growth or vdev replacement, and automatic expansion is enabled;
2224eda14cbcSMatt Macy * making the additional space available.
2225eda14cbcSMatt Macy *
2226eda14cbcSMatt Macy * The asize has decreased, due to a device shrink usually caused by a
2227eda14cbcSMatt Macy * vdev replace with a smaller device. This ensures that calculations
2228eda14cbcSMatt Macy * based of max_asize and asize e.g. esize are always valid. It's safe
2229eda14cbcSMatt Macy * to do this as we've already validated that asize is greater than
2230eda14cbcSMatt Macy * vdev_min_asize.
2231eda14cbcSMatt Macy */
2232eda14cbcSMatt Macy if (vd->vdev_state == VDEV_STATE_HEALTHY &&
2233eda14cbcSMatt Macy ((asize > vd->vdev_asize &&
2234eda14cbcSMatt Macy (vd->vdev_expanding || spa->spa_autoexpand)) ||
2235eda14cbcSMatt Macy (asize < vd->vdev_asize)))
2236eda14cbcSMatt Macy vd->vdev_asize = asize;
2237eda14cbcSMatt Macy
2238eda14cbcSMatt Macy vdev_set_min_asize(vd);
2239eda14cbcSMatt Macy
2240eda14cbcSMatt Macy /*
2241eda14cbcSMatt Macy * Ensure we can issue some IO before declaring the
2242eda14cbcSMatt Macy * vdev open for business.
2243eda14cbcSMatt Macy */
2244eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf &&
2245eda14cbcSMatt Macy (error = zio_wait(vdev_probe(vd, NULL))) != 0) {
2246eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED,
2247eda14cbcSMatt Macy VDEV_AUX_ERR_EXCEEDED);
2248eda14cbcSMatt Macy return (error);
2249eda14cbcSMatt Macy }
2250eda14cbcSMatt Macy
2251eda14cbcSMatt Macy /*
2252eda14cbcSMatt Macy * Track the minimum allocation size.
2253eda14cbcSMatt Macy */
2254eda14cbcSMatt Macy if (vd->vdev_top == vd && vd->vdev_ashift != 0 &&
2255eda14cbcSMatt Macy vd->vdev_islog == 0 && vd->vdev_aux == NULL) {
2256eda14cbcSMatt Macy uint64_t min_alloc = vdev_get_min_alloc(vd);
2257eda14cbcSMatt Macy vdev_spa_set_alloc(spa, min_alloc);
2258eda14cbcSMatt Macy }
2259eda14cbcSMatt Macy
2260eda14cbcSMatt Macy /*
2261eda14cbcSMatt Macy * If this is a leaf vdev, assess whether a resilver is needed.
2262eda14cbcSMatt Macy * But don't do this if we are doing a reopen for a scrub, since
2263eda14cbcSMatt Macy * this would just restart the scrub we are already doing.
2264eda14cbcSMatt Macy */
2265eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf && !spa->spa_scrub_reopen)
2266eda14cbcSMatt Macy dsl_scan_assess_vdev(spa->spa_dsl_pool, vd);
2267eda14cbcSMatt Macy
2268eda14cbcSMatt Macy return (0);
2269eda14cbcSMatt Macy }
2270eda14cbcSMatt Macy
2271eda14cbcSMatt Macy static void
vdev_validate_child(void * arg)2272eda14cbcSMatt Macy vdev_validate_child(void *arg)
2273eda14cbcSMatt Macy {
2274eda14cbcSMatt Macy vdev_t *vd = arg;
2275eda14cbcSMatt Macy
2276eda14cbcSMatt Macy vd->vdev_validate_thread = curthread;
2277eda14cbcSMatt Macy vd->vdev_validate_error = vdev_validate(vd);
2278eda14cbcSMatt Macy vd->vdev_validate_thread = NULL;
2279eda14cbcSMatt Macy }
2280eda14cbcSMatt Macy
2281eda14cbcSMatt Macy /*
2282eda14cbcSMatt Macy * Called once the vdevs are all opened, this routine validates the label
2283eda14cbcSMatt Macy * contents. This needs to be done before vdev_load() so that we don't
2284eda14cbcSMatt Macy * inadvertently do repair I/Os to the wrong device.
2285eda14cbcSMatt Macy *
2286eda14cbcSMatt Macy * This function will only return failure if one of the vdevs indicates that it
2287eda14cbcSMatt Macy * has since been destroyed or exported. This is only possible if
2288eda14cbcSMatt Macy * /etc/zfs/zpool.cache was readonly at the time. Otherwise, the vdev state
2289eda14cbcSMatt Macy * will be updated but the function will return 0.
2290eda14cbcSMatt Macy */
2291eda14cbcSMatt Macy int
vdev_validate(vdev_t * vd)2292eda14cbcSMatt Macy vdev_validate(vdev_t *vd)
2293eda14cbcSMatt Macy {
2294eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
2295eda14cbcSMatt Macy taskq_t *tq = NULL;
2296eda14cbcSMatt Macy nvlist_t *label;
2297eda14cbcSMatt Macy uint64_t guid = 0, aux_guid = 0, top_guid;
2298eda14cbcSMatt Macy uint64_t state;
2299eda14cbcSMatt Macy nvlist_t *nvl;
2300eda14cbcSMatt Macy uint64_t txg;
2301eda14cbcSMatt Macy int children = vd->vdev_children;
2302eda14cbcSMatt Macy
2303eda14cbcSMatt Macy if (vdev_validate_skip)
2304eda14cbcSMatt Macy return (0);
2305eda14cbcSMatt Macy
2306eda14cbcSMatt Macy if (children > 0) {
2307eda14cbcSMatt Macy tq = taskq_create("vdev_validate", children, minclsyspri,
2308eda14cbcSMatt Macy children, children, TASKQ_PREPOPULATE);
2309eda14cbcSMatt Macy }
2310eda14cbcSMatt Macy
2311eda14cbcSMatt Macy for (uint64_t c = 0; c < children; c++) {
2312eda14cbcSMatt Macy vdev_t *cvd = vd->vdev_child[c];
2313eda14cbcSMatt Macy
2314eda14cbcSMatt Macy if (tq == NULL || vdev_uses_zvols(cvd)) {
2315eda14cbcSMatt Macy vdev_validate_child(cvd);
2316eda14cbcSMatt Macy } else {
2317eda14cbcSMatt Macy VERIFY(taskq_dispatch(tq, vdev_validate_child, cvd,
2318eda14cbcSMatt Macy TQ_SLEEP) != TASKQID_INVALID);
2319eda14cbcSMatt Macy }
2320eda14cbcSMatt Macy }
2321eda14cbcSMatt Macy if (tq != NULL) {
2322eda14cbcSMatt Macy taskq_wait(tq);
2323eda14cbcSMatt Macy taskq_destroy(tq);
2324eda14cbcSMatt Macy }
2325eda14cbcSMatt Macy for (int c = 0; c < children; c++) {
2326eda14cbcSMatt Macy int error = vd->vdev_child[c]->vdev_validate_error;
2327eda14cbcSMatt Macy
2328eda14cbcSMatt Macy if (error != 0)
2329eda14cbcSMatt Macy return (SET_ERROR(EBADF));
2330eda14cbcSMatt Macy }
2331eda14cbcSMatt Macy
2332eda14cbcSMatt Macy
2333eda14cbcSMatt Macy /*
2334eda14cbcSMatt Macy * If the device has already failed, or was marked offline, don't do
2335eda14cbcSMatt Macy * any further validation. Otherwise, label I/O will fail and we will
2336eda14cbcSMatt Macy * overwrite the previous state.
2337eda14cbcSMatt Macy */
2338eda14cbcSMatt Macy if (!vd->vdev_ops->vdev_op_leaf || !vdev_readable(vd))
2339eda14cbcSMatt Macy return (0);
2340eda14cbcSMatt Macy
2341eda14cbcSMatt Macy /*
2342eda14cbcSMatt Macy * If we are performing an extreme rewind, we allow for a label that
2343eda14cbcSMatt Macy * was modified at a point after the current txg.
2344eda14cbcSMatt Macy * If config lock is not held do not check for the txg. spa_sync could
2345eda14cbcSMatt Macy * be updating the vdev's label before updating spa_last_synced_txg.
2346eda14cbcSMatt Macy */
2347eda14cbcSMatt Macy if (spa->spa_extreme_rewind || spa_last_synced_txg(spa) == 0 ||
2348eda14cbcSMatt Macy spa_config_held(spa, SCL_CONFIG, RW_WRITER) != SCL_CONFIG)
2349eda14cbcSMatt Macy txg = UINT64_MAX;
2350eda14cbcSMatt Macy else
2351eda14cbcSMatt Macy txg = spa_last_synced_txg(spa);
2352eda14cbcSMatt Macy
2353eda14cbcSMatt Macy if ((label = vdev_label_read_config(vd, txg)) == NULL) {
2354eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
23557877fdebSMatt Macy VDEV_AUX_BAD_LABEL);
23567877fdebSMatt Macy vdev_dbgmsg(vd, "vdev_validate: failed reading config for "
23577877fdebSMatt Macy "txg %llu", (u_longlong_t)txg);
2358eda14cbcSMatt Macy return (0);
2359eda14cbcSMatt Macy }
2360eda14cbcSMatt Macy
2361eda14cbcSMatt Macy /*
2362eda14cbcSMatt Macy * Determine if this vdev has been split off into another
2363eda14cbcSMatt Macy * pool. If so, then refuse to open it.
2364eda14cbcSMatt Macy */
2365eda14cbcSMatt Macy if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_SPLIT_GUID,
2366eda14cbcSMatt Macy &aux_guid) == 0 && aux_guid == spa_guid(spa)) {
2367eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
2368eda14cbcSMatt Macy VDEV_AUX_SPLIT_POOL);
2369eda14cbcSMatt Macy nvlist_free(label);
2370eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_validate: vdev split into other pool");
2371eda14cbcSMatt Macy return (0);
2372eda14cbcSMatt Macy }
2373eda14cbcSMatt Macy
2374eda14cbcSMatt Macy if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_GUID, &guid) != 0) {
2375eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
2376eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
2377eda14cbcSMatt Macy nvlist_free(label);
2378eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label",
2379eda14cbcSMatt Macy ZPOOL_CONFIG_POOL_GUID);
2380eda14cbcSMatt Macy return (0);
2381eda14cbcSMatt Macy }
2382eda14cbcSMatt Macy
2383eda14cbcSMatt Macy /*
2384eda14cbcSMatt Macy * If config is not trusted then ignore the spa guid check. This is
2385eda14cbcSMatt Macy * necessary because if the machine crashed during a re-guid the new
2386eda14cbcSMatt Macy * guid might have been written to all of the vdev labels, but not the
2387eda14cbcSMatt Macy * cached config. The check will be performed again once we have the
2388eda14cbcSMatt Macy * trusted config from the MOS.
2389eda14cbcSMatt Macy */
2390eda14cbcSMatt Macy if (spa->spa_trust_config && guid != spa_guid(spa)) {
2391eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
2392eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
2393eda14cbcSMatt Macy nvlist_free(label);
2394eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_validate: vdev label pool_guid doesn't "
2395eda14cbcSMatt Macy "match config (%llu != %llu)", (u_longlong_t)guid,
2396eda14cbcSMatt Macy (u_longlong_t)spa_guid(spa));
2397eda14cbcSMatt Macy return (0);
2398eda14cbcSMatt Macy }
2399eda14cbcSMatt Macy
2400eda14cbcSMatt Macy if (nvlist_lookup_nvlist(label, ZPOOL_CONFIG_VDEV_TREE, &nvl)
2401eda14cbcSMatt Macy != 0 || nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_ORIG_GUID,
2402eda14cbcSMatt Macy &aux_guid) != 0)
2403eda14cbcSMatt Macy aux_guid = 0;
2404eda14cbcSMatt Macy
2405eda14cbcSMatt Macy if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0) {
2406eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
2407eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
2408eda14cbcSMatt Macy nvlist_free(label);
2409eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label",
2410eda14cbcSMatt Macy ZPOOL_CONFIG_GUID);
2411eda14cbcSMatt Macy return (0);
2412eda14cbcSMatt Macy }
2413eda14cbcSMatt Macy
2414eda14cbcSMatt Macy if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_TOP_GUID, &top_guid)
2415eda14cbcSMatt Macy != 0) {
2416eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
2417eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
2418eda14cbcSMatt Macy nvlist_free(label);
2419eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label",
2420eda14cbcSMatt Macy ZPOOL_CONFIG_TOP_GUID);
2421eda14cbcSMatt Macy return (0);
2422eda14cbcSMatt Macy }
2423eda14cbcSMatt Macy
2424eda14cbcSMatt Macy /*
2425eda14cbcSMatt Macy * If this vdev just became a top-level vdev because its sibling was
2426eda14cbcSMatt Macy * detached, it will have adopted the parent's vdev guid -- but the
2427eda14cbcSMatt Macy * label may or may not be on disk yet. Fortunately, either version
2428eda14cbcSMatt Macy * of the label will have the same top guid, so if we're a top-level
2429eda14cbcSMatt Macy * vdev, we can safely compare to that instead.
2430eda14cbcSMatt Macy * However, if the config comes from a cachefile that failed to update
2431eda14cbcSMatt Macy * after the detach, a top-level vdev will appear as a non top-level
2432eda14cbcSMatt Macy * vdev in the config. Also relax the constraints if we perform an
2433eda14cbcSMatt Macy * extreme rewind.
2434eda14cbcSMatt Macy *
2435eda14cbcSMatt Macy * If we split this vdev off instead, then we also check the
2436eda14cbcSMatt Macy * original pool's guid. We don't want to consider the vdev
2437eda14cbcSMatt Macy * corrupt if it is partway through a split operation.
2438eda14cbcSMatt Macy */
2439eda14cbcSMatt Macy if (vd->vdev_guid != guid && vd->vdev_guid != aux_guid) {
2440eda14cbcSMatt Macy boolean_t mismatch = B_FALSE;
2441eda14cbcSMatt Macy if (spa->spa_trust_config && !spa->spa_extreme_rewind) {
2442eda14cbcSMatt Macy if (vd != vd->vdev_top || vd->vdev_guid != top_guid)
2443eda14cbcSMatt Macy mismatch = B_TRUE;
2444eda14cbcSMatt Macy } else {
2445eda14cbcSMatt Macy if (vd->vdev_guid != top_guid &&
2446eda14cbcSMatt Macy vd->vdev_top->vdev_guid != guid)
2447eda14cbcSMatt Macy mismatch = B_TRUE;
2448eda14cbcSMatt Macy }
2449eda14cbcSMatt Macy
2450eda14cbcSMatt Macy if (mismatch) {
2451eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
2452eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
2453eda14cbcSMatt Macy nvlist_free(label);
2454eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_validate: config guid "
2455eda14cbcSMatt Macy "doesn't match label guid");
2456eda14cbcSMatt Macy vdev_dbgmsg(vd, "CONFIG: guid %llu, top_guid %llu",
2457eda14cbcSMatt Macy (u_longlong_t)vd->vdev_guid,
2458eda14cbcSMatt Macy (u_longlong_t)vd->vdev_top->vdev_guid);
2459eda14cbcSMatt Macy vdev_dbgmsg(vd, "LABEL: guid %llu, top_guid %llu, "
2460eda14cbcSMatt Macy "aux_guid %llu", (u_longlong_t)guid,
2461eda14cbcSMatt Macy (u_longlong_t)top_guid, (u_longlong_t)aux_guid);
2462eda14cbcSMatt Macy return (0);
2463eda14cbcSMatt Macy }
2464eda14cbcSMatt Macy }
2465eda14cbcSMatt Macy
2466eda14cbcSMatt Macy if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE,
2467eda14cbcSMatt Macy &state) != 0) {
2468eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
2469eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
2470eda14cbcSMatt Macy nvlist_free(label);
2471eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label",
2472eda14cbcSMatt Macy ZPOOL_CONFIG_POOL_STATE);
2473eda14cbcSMatt Macy return (0);
2474eda14cbcSMatt Macy }
2475eda14cbcSMatt Macy
2476eda14cbcSMatt Macy nvlist_free(label);
2477eda14cbcSMatt Macy
2478eda14cbcSMatt Macy /*
2479eda14cbcSMatt Macy * If this is a verbatim import, no need to check the
2480eda14cbcSMatt Macy * state of the pool.
2481eda14cbcSMatt Macy */
2482eda14cbcSMatt Macy if (!(spa->spa_import_flags & ZFS_IMPORT_VERBATIM) &&
2483eda14cbcSMatt Macy spa_load_state(spa) == SPA_LOAD_OPEN &&
2484eda14cbcSMatt Macy state != POOL_STATE_ACTIVE) {
2485eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_validate: invalid pool state (%llu) "
2486eda14cbcSMatt Macy "for spa %s", (u_longlong_t)state, spa->spa_name);
2487eda14cbcSMatt Macy return (SET_ERROR(EBADF));
2488eda14cbcSMatt Macy }
2489eda14cbcSMatt Macy
2490eda14cbcSMatt Macy /*
2491eda14cbcSMatt Macy * If we were able to open and validate a vdev that was
2492eda14cbcSMatt Macy * previously marked permanently unavailable, clear that state
2493eda14cbcSMatt Macy * now.
2494eda14cbcSMatt Macy */
2495eda14cbcSMatt Macy if (vd->vdev_not_present)
2496eda14cbcSMatt Macy vd->vdev_not_present = 0;
2497eda14cbcSMatt Macy
2498eda14cbcSMatt Macy return (0);
2499eda14cbcSMatt Macy }
2500eda14cbcSMatt Macy
2501eda14cbcSMatt Macy static void
vdev_update_path(const char * prefix,char * svd,char ** dvd,uint64_t guid)2502eda14cbcSMatt Macy vdev_update_path(const char *prefix, char *svd, char **dvd, uint64_t guid)
2503eda14cbcSMatt Macy {
2504eda14cbcSMatt Macy if (svd != NULL && *dvd != NULL) {
2505eda14cbcSMatt Macy if (strcmp(svd, *dvd) != 0) {
2506eda14cbcSMatt Macy zfs_dbgmsg("vdev_copy_path: vdev %llu: %s changed "
2507eda14cbcSMatt Macy "from '%s' to '%s'", (u_longlong_t)guid, prefix,
2508eda14cbcSMatt Macy *dvd, svd);
2509eda14cbcSMatt Macy spa_strfree(*dvd);
2510eda14cbcSMatt Macy *dvd = spa_strdup(svd);
2511eda14cbcSMatt Macy }
2512eda14cbcSMatt Macy } else if (svd != NULL) {
2513eda14cbcSMatt Macy *dvd = spa_strdup(svd);
2514eda14cbcSMatt Macy zfs_dbgmsg("vdev_copy_path: vdev %llu: path set to '%s'",
2515eda14cbcSMatt Macy (u_longlong_t)guid, *dvd);
2516eda14cbcSMatt Macy }
2517eda14cbcSMatt Macy }
2518eda14cbcSMatt Macy
2519eda14cbcSMatt Macy static void
vdev_copy_path_impl(vdev_t * svd,vdev_t * dvd)2520eda14cbcSMatt Macy vdev_copy_path_impl(vdev_t *svd, vdev_t *dvd)
2521eda14cbcSMatt Macy {
2522eda14cbcSMatt Macy char *old, *new;
2523eda14cbcSMatt Macy
2524eda14cbcSMatt Macy vdev_update_path("vdev_path", svd->vdev_path, &dvd->vdev_path,
2525eda14cbcSMatt Macy dvd->vdev_guid);
2526eda14cbcSMatt Macy
2527eda14cbcSMatt Macy vdev_update_path("vdev_devid", svd->vdev_devid, &dvd->vdev_devid,
2528eda14cbcSMatt Macy dvd->vdev_guid);
2529eda14cbcSMatt Macy
2530eda14cbcSMatt Macy vdev_update_path("vdev_physpath", svd->vdev_physpath,
2531eda14cbcSMatt Macy &dvd->vdev_physpath, dvd->vdev_guid);
2532eda14cbcSMatt Macy
2533eda14cbcSMatt Macy /*
2534eda14cbcSMatt Macy * Our enclosure sysfs path may have changed between imports
2535eda14cbcSMatt Macy */
2536eda14cbcSMatt Macy old = dvd->vdev_enc_sysfs_path;
2537eda14cbcSMatt Macy new = svd->vdev_enc_sysfs_path;
2538eda14cbcSMatt Macy if ((old != NULL && new == NULL) ||
2539eda14cbcSMatt Macy (old == NULL && new != NULL) ||
2540eda14cbcSMatt Macy ((old != NULL && new != NULL) && strcmp(new, old) != 0)) {
2541eda14cbcSMatt Macy zfs_dbgmsg("vdev_copy_path: vdev %llu: vdev_enc_sysfs_path "
2542eda14cbcSMatt Macy "changed from '%s' to '%s'", (u_longlong_t)dvd->vdev_guid,
2543eda14cbcSMatt Macy old, new);
2544eda14cbcSMatt Macy
2545eda14cbcSMatt Macy if (dvd->vdev_enc_sysfs_path)
2546eda14cbcSMatt Macy spa_strfree(dvd->vdev_enc_sysfs_path);
2547eda14cbcSMatt Macy
2548eda14cbcSMatt Macy if (svd->vdev_enc_sysfs_path) {
2549eda14cbcSMatt Macy dvd->vdev_enc_sysfs_path = spa_strdup(
2550eda14cbcSMatt Macy svd->vdev_enc_sysfs_path);
2551eda14cbcSMatt Macy } else {
2552eda14cbcSMatt Macy dvd->vdev_enc_sysfs_path = NULL;
2553eda14cbcSMatt Macy }
2554eda14cbcSMatt Macy }
2555eda14cbcSMatt Macy }
2556eda14cbcSMatt Macy
2557eda14cbcSMatt Macy /*
2558eda14cbcSMatt Macy * Recursively copy vdev paths from one vdev to another. Source and destination
2559eda14cbcSMatt Macy * vdev trees must have same geometry otherwise return error. Intended to copy
2560eda14cbcSMatt Macy * paths from userland config into MOS config.
2561eda14cbcSMatt Macy */
2562eda14cbcSMatt Macy int
vdev_copy_path_strict(vdev_t * svd,vdev_t * dvd)2563eda14cbcSMatt Macy vdev_copy_path_strict(vdev_t *svd, vdev_t *dvd)
2564eda14cbcSMatt Macy {
2565eda14cbcSMatt Macy if ((svd->vdev_ops == &vdev_missing_ops) ||
2566eda14cbcSMatt Macy (svd->vdev_ishole && dvd->vdev_ishole) ||
2567eda14cbcSMatt Macy (dvd->vdev_ops == &vdev_indirect_ops))
2568eda14cbcSMatt Macy return (0);
2569eda14cbcSMatt Macy
2570eda14cbcSMatt Macy if (svd->vdev_ops != dvd->vdev_ops) {
2571eda14cbcSMatt Macy vdev_dbgmsg(svd, "vdev_copy_path: vdev type mismatch: %s != %s",
2572eda14cbcSMatt Macy svd->vdev_ops->vdev_op_type, dvd->vdev_ops->vdev_op_type);
2573eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
2574eda14cbcSMatt Macy }
2575eda14cbcSMatt Macy
2576eda14cbcSMatt Macy if (svd->vdev_guid != dvd->vdev_guid) {
2577eda14cbcSMatt Macy vdev_dbgmsg(svd, "vdev_copy_path: guids mismatch (%llu != "
2578eda14cbcSMatt Macy "%llu)", (u_longlong_t)svd->vdev_guid,
2579eda14cbcSMatt Macy (u_longlong_t)dvd->vdev_guid);
2580eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
2581eda14cbcSMatt Macy }
2582eda14cbcSMatt Macy
2583eda14cbcSMatt Macy if (svd->vdev_children != dvd->vdev_children) {
2584eda14cbcSMatt Macy vdev_dbgmsg(svd, "vdev_copy_path: children count mismatch: "
2585eda14cbcSMatt Macy "%llu != %llu", (u_longlong_t)svd->vdev_children,
2586eda14cbcSMatt Macy (u_longlong_t)dvd->vdev_children);
2587eda14cbcSMatt Macy return (SET_ERROR(EINVAL));
2588eda14cbcSMatt Macy }
2589eda14cbcSMatt Macy
2590eda14cbcSMatt Macy for (uint64_t i = 0; i < svd->vdev_children; i++) {
2591eda14cbcSMatt Macy int error = vdev_copy_path_strict(svd->vdev_child[i],
2592eda14cbcSMatt Macy dvd->vdev_child[i]);
2593eda14cbcSMatt Macy if (error != 0)
2594eda14cbcSMatt Macy return (error);
2595eda14cbcSMatt Macy }
2596eda14cbcSMatt Macy
2597eda14cbcSMatt Macy if (svd->vdev_ops->vdev_op_leaf)
2598eda14cbcSMatt Macy vdev_copy_path_impl(svd, dvd);
2599eda14cbcSMatt Macy
2600eda14cbcSMatt Macy return (0);
2601eda14cbcSMatt Macy }
2602eda14cbcSMatt Macy
2603eda14cbcSMatt Macy static void
vdev_copy_path_search(vdev_t * stvd,vdev_t * dvd)2604eda14cbcSMatt Macy vdev_copy_path_search(vdev_t *stvd, vdev_t *dvd)
2605eda14cbcSMatt Macy {
2606eda14cbcSMatt Macy ASSERT(stvd->vdev_top == stvd);
2607eda14cbcSMatt Macy ASSERT3U(stvd->vdev_id, ==, dvd->vdev_top->vdev_id);
2608eda14cbcSMatt Macy
2609eda14cbcSMatt Macy for (uint64_t i = 0; i < dvd->vdev_children; i++) {
2610eda14cbcSMatt Macy vdev_copy_path_search(stvd, dvd->vdev_child[i]);
2611eda14cbcSMatt Macy }
2612eda14cbcSMatt Macy
2613eda14cbcSMatt Macy if (!dvd->vdev_ops->vdev_op_leaf || !vdev_is_concrete(dvd))
2614eda14cbcSMatt Macy return;
2615eda14cbcSMatt Macy
2616eda14cbcSMatt Macy /*
2617eda14cbcSMatt Macy * The idea here is that while a vdev can shift positions within
2618eda14cbcSMatt Macy * a top vdev (when replacing, attaching mirror, etc.) it cannot
2619eda14cbcSMatt Macy * step outside of it.
2620eda14cbcSMatt Macy */
2621eda14cbcSMatt Macy vdev_t *vd = vdev_lookup_by_guid(stvd, dvd->vdev_guid);
2622eda14cbcSMatt Macy
2623eda14cbcSMatt Macy if (vd == NULL || vd->vdev_ops != dvd->vdev_ops)
2624eda14cbcSMatt Macy return;
2625eda14cbcSMatt Macy
2626eda14cbcSMatt Macy ASSERT(vd->vdev_ops->vdev_op_leaf);
2627eda14cbcSMatt Macy
2628eda14cbcSMatt Macy vdev_copy_path_impl(vd, dvd);
2629eda14cbcSMatt Macy }
2630eda14cbcSMatt Macy
2631eda14cbcSMatt Macy /*
2632eda14cbcSMatt Macy * Recursively copy vdev paths from one root vdev to another. Source and
2633eda14cbcSMatt Macy * destination vdev trees may differ in geometry. For each destination leaf
2634eda14cbcSMatt Macy * vdev, search a vdev with the same guid and top vdev id in the source.
2635eda14cbcSMatt Macy * Intended to copy paths from userland config into MOS config.
2636eda14cbcSMatt Macy */
2637eda14cbcSMatt Macy void
vdev_copy_path_relaxed(vdev_t * srvd,vdev_t * drvd)2638eda14cbcSMatt Macy vdev_copy_path_relaxed(vdev_t *srvd, vdev_t *drvd)
2639eda14cbcSMatt Macy {
2640eda14cbcSMatt Macy uint64_t children = MIN(srvd->vdev_children, drvd->vdev_children);
2641eda14cbcSMatt Macy ASSERT(srvd->vdev_ops == &vdev_root_ops);
2642eda14cbcSMatt Macy ASSERT(drvd->vdev_ops == &vdev_root_ops);
2643eda14cbcSMatt Macy
2644eda14cbcSMatt Macy for (uint64_t i = 0; i < children; i++) {
2645eda14cbcSMatt Macy vdev_copy_path_search(srvd->vdev_child[i],
2646eda14cbcSMatt Macy drvd->vdev_child[i]);
2647eda14cbcSMatt Macy }
2648eda14cbcSMatt Macy }
2649eda14cbcSMatt Macy
2650eda14cbcSMatt Macy /*
2651eda14cbcSMatt Macy * Close a virtual device.
2652eda14cbcSMatt Macy */
2653eda14cbcSMatt Macy void
vdev_close(vdev_t * vd)26547877fdebSMatt Macy vdev_close(vdev_t *vd)
26557877fdebSMatt Macy {
26567877fdebSMatt Macy vdev_t *pvd = vd->vdev_parent;
26577877fdebSMatt Macy spa_t *spa __maybe_unused = vd->vdev_spa;
26587877fdebSMatt Macy
2659eda14cbcSMatt Macy ASSERT(vd != NULL);
2660eda14cbcSMatt Macy ASSERT(vd->vdev_open_thread == curthread ||
2661eda14cbcSMatt Macy spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
2662eda14cbcSMatt Macy
2663eda14cbcSMatt Macy /*
2664eda14cbcSMatt Macy * If our parent is reopening, then we are as well, unless we are
2665eda14cbcSMatt Macy * going offline.
2666eda14cbcSMatt Macy */
2667eda14cbcSMatt Macy if (pvd != NULL && pvd->vdev_reopening)
2668eda14cbcSMatt Macy vd->vdev_reopening = (pvd->vdev_reopening && !vd->vdev_offline);
2669eda14cbcSMatt Macy
2670eda14cbcSMatt Macy vd->vdev_ops->vdev_op_close(vd);
2671eda14cbcSMatt Macy
2672eda14cbcSMatt Macy /*
2673eda14cbcSMatt Macy * We record the previous state before we close it, so that if we are
2674eda14cbcSMatt Macy * doing a reopen(), we don't generate FMA ereports if we notice that
2675eda14cbcSMatt Macy * it's still faulted.
2676eda14cbcSMatt Macy */
2677eda14cbcSMatt Macy vd->vdev_prevstate = vd->vdev_state;
2678eda14cbcSMatt Macy
2679eda14cbcSMatt Macy if (vd->vdev_offline)
2680eda14cbcSMatt Macy vd->vdev_state = VDEV_STATE_OFFLINE;
2681eda14cbcSMatt Macy else
26827877fdebSMatt Macy vd->vdev_state = VDEV_STATE_CLOSED;
26837877fdebSMatt Macy vd->vdev_stat.vs_aux = VDEV_AUX_NONE;
2684eda14cbcSMatt Macy }
2685eda14cbcSMatt Macy
26867877fdebSMatt Macy void
vdev_hold(vdev_t * vd)26877877fdebSMatt Macy vdev_hold(vdev_t *vd)
26887877fdebSMatt Macy {
26897877fdebSMatt Macy spa_t *spa = vd->vdev_spa;
26907877fdebSMatt Macy
26917877fdebSMatt Macy ASSERT(spa_is_root(spa));
26927877fdebSMatt Macy if (spa->spa_state == POOL_STATE_UNINITIALIZED)
26937877fdebSMatt Macy return;
26947877fdebSMatt Macy
26957877fdebSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
26967877fdebSMatt Macy vdev_hold(vd->vdev_child[c]);
26977877fdebSMatt Macy
26987877fdebSMatt Macy if (vd->vdev_ops->vdev_op_leaf && vd->vdev_ops->vdev_op_hold != NULL)
26997877fdebSMatt Macy vd->vdev_ops->vdev_op_hold(vd);
27007877fdebSMatt Macy }
27017877fdebSMatt Macy
2702eda14cbcSMatt Macy void
vdev_rele(vdev_t * vd)2703eda14cbcSMatt Macy vdev_rele(vdev_t *vd)
2704eda14cbcSMatt Macy {
2705eda14cbcSMatt Macy ASSERT(spa_is_root(vd->vdev_spa));
2706eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
2707eda14cbcSMatt Macy vdev_rele(vd->vdev_child[c]);
2708eda14cbcSMatt Macy
27097877fdebSMatt Macy if (vd->vdev_ops->vdev_op_leaf && vd->vdev_ops->vdev_op_rele != NULL)
27107877fdebSMatt Macy vd->vdev_ops->vdev_op_rele(vd);
2711eda14cbcSMatt Macy }
2712eda14cbcSMatt Macy
2713eda14cbcSMatt Macy /*
2714eda14cbcSMatt Macy * Reopen all interior vdevs and any unopened leaves. We don't actually
2715eda14cbcSMatt Macy * reopen leaf vdevs which had previously been opened as they might deadlock
2716eda14cbcSMatt Macy * on the spa_config_lock. Instead we only obtain the leaf's physical size.
2717eda14cbcSMatt Macy * If the leaf has never been opened then open it, as usual.
2718eda14cbcSMatt Macy */
2719eda14cbcSMatt Macy void
vdev_reopen(vdev_t * vd)2720eda14cbcSMatt Macy vdev_reopen(vdev_t *vd)
2721eda14cbcSMatt Macy {
2722eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
2723eda14cbcSMatt Macy
2724eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
2725eda14cbcSMatt Macy
2726eda14cbcSMatt Macy /* set the reopening flag unless we're taking the vdev offline */
2727eda14cbcSMatt Macy vd->vdev_reopening = !vd->vdev_offline;
2728eda14cbcSMatt Macy vdev_close(vd);
2729eda14cbcSMatt Macy (void) vdev_open(vd);
2730eda14cbcSMatt Macy
2731eda14cbcSMatt Macy /*
2732eda14cbcSMatt Macy * Call vdev_validate() here to make sure we have the same device.
2733eda14cbcSMatt Macy * Otherwise, a device with an invalid label could be successfully
2734eda14cbcSMatt Macy * opened in response to vdev_reopen().
2735eda14cbcSMatt Macy */
2736eda14cbcSMatt Macy if (vd->vdev_aux) {
2737eda14cbcSMatt Macy (void) vdev_validate_aux(vd);
2738eda14cbcSMatt Macy if (vdev_readable(vd) && vdev_writeable(vd) &&
2739eda14cbcSMatt Macy vd->vdev_aux == &spa->spa_l2cache) {
2740eda14cbcSMatt Macy /*
2741eda14cbcSMatt Macy * In case the vdev is present we should evict all ARC
2742eda14cbcSMatt Macy * buffers and pointers to log blocks and reclaim their
2743eda14cbcSMatt Macy * space before restoring its contents to L2ARC.
2744eda14cbcSMatt Macy */
2745eda14cbcSMatt Macy if (l2arc_vdev_present(vd)) {
2746eda14cbcSMatt Macy l2arc_rebuild_vdev(vd, B_TRUE);
2747eda14cbcSMatt Macy } else {
2748eda14cbcSMatt Macy l2arc_add_vdev(spa, vd);
2749eda14cbcSMatt Macy }
2750eda14cbcSMatt Macy spa_async_request(spa, SPA_ASYNC_L2CACHE_REBUILD);
2751eda14cbcSMatt Macy spa_async_request(spa, SPA_ASYNC_L2CACHE_TRIM);
2752eda14cbcSMatt Macy }
2753eda14cbcSMatt Macy } else {
2754eda14cbcSMatt Macy (void) vdev_validate(vd);
2755eda14cbcSMatt Macy }
2756eda14cbcSMatt Macy
2757eda14cbcSMatt Macy /*
2758eda14cbcSMatt Macy * Recheck if resilver is still needed and cancel any
2759eda14cbcSMatt Macy * scheduled resilver if resilver is unneeded.
2760eda14cbcSMatt Macy */
2761eda14cbcSMatt Macy if (!vdev_resilver_needed(spa->spa_root_vdev, NULL, NULL) &&
2762eda14cbcSMatt Macy spa->spa_async_tasks & SPA_ASYNC_RESILVER) {
2763eda14cbcSMatt Macy mutex_enter(&spa->spa_async_lock);
2764eda14cbcSMatt Macy spa->spa_async_tasks &= ~SPA_ASYNC_RESILVER;
2765eda14cbcSMatt Macy mutex_exit(&spa->spa_async_lock);
2766eda14cbcSMatt Macy }
2767eda14cbcSMatt Macy
2768eda14cbcSMatt Macy /*
2769eda14cbcSMatt Macy * Reassess parent vdev's health.
2770eda14cbcSMatt Macy */
2771eda14cbcSMatt Macy vdev_propagate_state(vd);
2772eda14cbcSMatt Macy }
2773eda14cbcSMatt Macy
2774eda14cbcSMatt Macy int
vdev_create(vdev_t * vd,uint64_t txg,boolean_t isreplacing)2775eda14cbcSMatt Macy vdev_create(vdev_t *vd, uint64_t txg, boolean_t isreplacing)
2776eda14cbcSMatt Macy {
2777eda14cbcSMatt Macy int error;
2778eda14cbcSMatt Macy
2779eda14cbcSMatt Macy /*
2780eda14cbcSMatt Macy * Normally, partial opens (e.g. of a mirror) are allowed.
2781eda14cbcSMatt Macy * For a create, however, we want to fail the request if
2782eda14cbcSMatt Macy * there are any components we can't open.
2783eda14cbcSMatt Macy */
2784eda14cbcSMatt Macy error = vdev_open(vd);
2785eda14cbcSMatt Macy
2786eda14cbcSMatt Macy if (error || vd->vdev_state != VDEV_STATE_HEALTHY) {
2787eda14cbcSMatt Macy vdev_close(vd);
2788eda14cbcSMatt Macy return (error ? error : SET_ERROR(ENXIO));
2789eda14cbcSMatt Macy }
2790eda14cbcSMatt Macy
2791eda14cbcSMatt Macy /*
2792eda14cbcSMatt Macy * Recursively load DTLs and initialize all labels.
2793eda14cbcSMatt Macy */
2794eda14cbcSMatt Macy if ((error = vdev_dtl_load(vd)) != 0 ||
2795eda14cbcSMatt Macy (error = vdev_label_init(vd, txg, isreplacing ?
2796eda14cbcSMatt Macy VDEV_LABEL_REPLACE : VDEV_LABEL_CREATE)) != 0) {
2797eda14cbcSMatt Macy vdev_close(vd);
2798eda14cbcSMatt Macy return (error);
2799eda14cbcSMatt Macy }
2800eda14cbcSMatt Macy
2801eda14cbcSMatt Macy return (0);
2802eda14cbcSMatt Macy }
2803eda14cbcSMatt Macy
2804eda14cbcSMatt Macy void
vdev_metaslab_set_size(vdev_t * vd)2805eda14cbcSMatt Macy vdev_metaslab_set_size(vdev_t *vd)
2806eda14cbcSMatt Macy {
2807eda14cbcSMatt Macy uint64_t asize = vd->vdev_asize;
2808eda14cbcSMatt Macy uint64_t ms_count = asize >> zfs_vdev_default_ms_shift;
2809eda14cbcSMatt Macy uint64_t ms_shift;
2810eda14cbcSMatt Macy
2811eda14cbcSMatt Macy /*
2812eda14cbcSMatt Macy * There are two dimensions to the metaslab sizing calculation:
2813eda14cbcSMatt Macy * the size of the metaslab and the count of metaslabs per vdev.
2814eda14cbcSMatt Macy *
2815eda14cbcSMatt Macy * The default values used below are a good balance between memory
2816eda14cbcSMatt Macy * usage (larger metaslab size means more memory needed for loaded
2817eda14cbcSMatt Macy * metaslabs; more metaslabs means more memory needed for the
2818eda14cbcSMatt Macy * metaslab_t structs), metaslab load time (larger metaslabs take
2819eda14cbcSMatt Macy * longer to load), and metaslab sync time (more metaslabs means
2820eda14cbcSMatt Macy * more time spent syncing all of them).
2821eda14cbcSMatt Macy *
2822eda14cbcSMatt Macy * In general, we aim for zfs_vdev_default_ms_count (200) metaslabs.
2823eda14cbcSMatt Macy * The range of the dimensions are as follows:
2824eda14cbcSMatt Macy *
2825eda14cbcSMatt Macy * 2^29 <= ms_size <= 2^34
2826eda14cbcSMatt Macy * 16 <= ms_count <= 131,072
2827eda14cbcSMatt Macy *
2828eda14cbcSMatt Macy * On the lower end of vdev sizes, we aim for metaslabs sizes of
2829eda14cbcSMatt Macy * at least 512MB (2^29) to minimize fragmentation effects when
2830eda14cbcSMatt Macy * testing with smaller devices. However, the count constraint
2831eda14cbcSMatt Macy * of at least 16 metaslabs will override this minimum size goal.
2832eda14cbcSMatt Macy *
2833eda14cbcSMatt Macy * On the upper end of vdev sizes, we aim for a maximum metaslab
2834eda14cbcSMatt Macy * size of 16GB. However, we will cap the total count to 2^17
2835eda14cbcSMatt Macy * metaslabs to keep our memory footprint in check and let the
2836eda14cbcSMatt Macy * metaslab size grow from there if that limit is hit.
2837eda14cbcSMatt Macy *
2838eda14cbcSMatt Macy * The net effect of applying above constrains is summarized below.
2839eda14cbcSMatt Macy *
2840eda14cbcSMatt Macy * vdev size metaslab count
2841eda14cbcSMatt Macy * --------------|-----------------
2842eda14cbcSMatt Macy * < 8GB ~16
2843eda14cbcSMatt Macy * 8GB - 100GB one per 512MB
2844eda14cbcSMatt Macy * 100GB - 3TB ~200
2845eda14cbcSMatt Macy * 3TB - 2PB one per 16GB
2846eda14cbcSMatt Macy * > 2PB ~131,072
2847eda14cbcSMatt Macy * --------------------------------
2848eda14cbcSMatt Macy *
2849eda14cbcSMatt Macy * Finally, note that all of the above calculate the initial
2850eda14cbcSMatt Macy * number of metaslabs. Expanding a top-level vdev will result
2851eda14cbcSMatt Macy * in additional metaslabs being allocated making it possible
2852eda14cbcSMatt Macy * to exceed the zfs_vdev_ms_count_limit.
2853eda14cbcSMatt Macy */
2854eda14cbcSMatt Macy
2855eda14cbcSMatt Macy if (ms_count < zfs_vdev_min_ms_count)
2856eda14cbcSMatt Macy ms_shift = highbit64(asize / zfs_vdev_min_ms_count);
2857eda14cbcSMatt Macy else if (ms_count > zfs_vdev_default_ms_count)
2858eda14cbcSMatt Macy ms_shift = highbit64(asize / zfs_vdev_default_ms_count);
2859eda14cbcSMatt Macy else
2860eda14cbcSMatt Macy ms_shift = zfs_vdev_default_ms_shift;
2861eda14cbcSMatt Macy
2862eda14cbcSMatt Macy if (ms_shift < SPA_MAXBLOCKSHIFT) {
2863eda14cbcSMatt Macy ms_shift = SPA_MAXBLOCKSHIFT;
2864eda14cbcSMatt Macy } else if (ms_shift > zfs_vdev_max_ms_shift) {
2865eda14cbcSMatt Macy ms_shift = zfs_vdev_max_ms_shift;
2866eda14cbcSMatt Macy /* cap the total count to constrain memory footprint */
2867eda14cbcSMatt Macy if ((asize >> ms_shift) > zfs_vdev_ms_count_limit)
2868eda14cbcSMatt Macy ms_shift = highbit64(asize / zfs_vdev_ms_count_limit);
2869eda14cbcSMatt Macy }
2870eda14cbcSMatt Macy
2871eda14cbcSMatt Macy vd->vdev_ms_shift = ms_shift;
2872eda14cbcSMatt Macy ASSERT3U(vd->vdev_ms_shift, >=, SPA_MAXBLOCKSHIFT);
2873eda14cbcSMatt Macy }
2874eda14cbcSMatt Macy
2875eda14cbcSMatt Macy void
vdev_dirty(vdev_t * vd,int flags,void * arg,uint64_t txg)2876eda14cbcSMatt Macy vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg)
2877eda14cbcSMatt Macy {
2878eda14cbcSMatt Macy ASSERT(vd == vd->vdev_top);
2879eda14cbcSMatt Macy /* indirect vdevs don't have metaslabs or dtls */
2880eda14cbcSMatt Macy ASSERT(vdev_is_concrete(vd) || flags == 0);
2881eda14cbcSMatt Macy ASSERT(ISP2(flags));
2882eda14cbcSMatt Macy ASSERT(spa_writeable(vd->vdev_spa));
2883eda14cbcSMatt Macy
2884eda14cbcSMatt Macy if (flags & VDD_METASLAB)
2885eda14cbcSMatt Macy (void) txg_list_add(&vd->vdev_ms_list, arg, txg);
2886eda14cbcSMatt Macy
2887eda14cbcSMatt Macy if (flags & VDD_DTL)
2888eda14cbcSMatt Macy (void) txg_list_add(&vd->vdev_dtl_list, arg, txg);
2889eda14cbcSMatt Macy
2890eda14cbcSMatt Macy (void) txg_list_add(&vd->vdev_spa->spa_vdev_txg_list, vd, txg);
2891eda14cbcSMatt Macy }
2892eda14cbcSMatt Macy
2893eda14cbcSMatt Macy void
vdev_dirty_leaves(vdev_t * vd,int flags,uint64_t txg)2894eda14cbcSMatt Macy vdev_dirty_leaves(vdev_t *vd, int flags, uint64_t txg)
2895eda14cbcSMatt Macy {
2896eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
2897eda14cbcSMatt Macy vdev_dirty_leaves(vd->vdev_child[c], flags, txg);
2898eda14cbcSMatt Macy
2899eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf)
2900eda14cbcSMatt Macy vdev_dirty(vd->vdev_top, flags, vd, txg);
2901eda14cbcSMatt Macy }
2902eda14cbcSMatt Macy
2903eda14cbcSMatt Macy /*
2904eda14cbcSMatt Macy * DTLs.
2905eda14cbcSMatt Macy *
2906eda14cbcSMatt Macy * A vdev's DTL (dirty time log) is the set of transaction groups for which
2907eda14cbcSMatt Macy * the vdev has less than perfect replication. There are four kinds of DTL:
2908eda14cbcSMatt Macy *
2909eda14cbcSMatt Macy * DTL_MISSING: txgs for which the vdev has no valid copies of the data
2910eda14cbcSMatt Macy *
2911eda14cbcSMatt Macy * DTL_PARTIAL: txgs for which data is available, but not fully replicated
2912eda14cbcSMatt Macy *
2913eda14cbcSMatt Macy * DTL_SCRUB: the txgs that could not be repaired by the last scrub; upon
2914eda14cbcSMatt Macy * scrub completion, DTL_SCRUB replaces DTL_MISSING in the range of
2915eda14cbcSMatt Macy * txgs that was scrubbed.
2916eda14cbcSMatt Macy *
2917eda14cbcSMatt Macy * DTL_OUTAGE: txgs which cannot currently be read, whether due to
2918eda14cbcSMatt Macy * persistent errors or just some device being offline.
2919eda14cbcSMatt Macy * Unlike the other three, the DTL_OUTAGE map is not generally
2920eda14cbcSMatt Macy * maintained; it's only computed when needed, typically to
2921eda14cbcSMatt Macy * determine whether a device can be detached.
2922eda14cbcSMatt Macy *
2923eda14cbcSMatt Macy * For leaf vdevs, DTL_MISSING and DTL_PARTIAL are identical: the device
2924eda14cbcSMatt Macy * either has the data or it doesn't.
2925eda14cbcSMatt Macy *
2926eda14cbcSMatt Macy * For interior vdevs such as mirror and RAID-Z the picture is more complex.
2927eda14cbcSMatt Macy * A vdev's DTL_PARTIAL is the union of its children's DTL_PARTIALs, because
2928eda14cbcSMatt Macy * if any child is less than fully replicated, then so is its parent.
2929eda14cbcSMatt Macy * A vdev's DTL_MISSING is a modified union of its children's DTL_MISSINGs,
2930eda14cbcSMatt Macy * comprising only those txgs which appear in 'maxfaults' or more children;
2931eda14cbcSMatt Macy * those are the txgs we don't have enough replication to read. For example,
2932eda14cbcSMatt Macy * double-parity RAID-Z can tolerate up to two missing devices (maxfaults == 2);
2933eda14cbcSMatt Macy * thus, its DTL_MISSING consists of the set of txgs that appear in more than
2934eda14cbcSMatt Macy * two child DTL_MISSING maps.
2935eda14cbcSMatt Macy *
2936eda14cbcSMatt Macy * It should be clear from the above that to compute the DTLs and outage maps
2937eda14cbcSMatt Macy * for all vdevs, it suffices to know just the leaf vdevs' DTL_MISSING maps.
2938eda14cbcSMatt Macy * Therefore, that is all we keep on disk. When loading the pool, or after
2939eda14cbcSMatt Macy * a configuration change, we generate all other DTLs from first principles.
2940eda14cbcSMatt Macy */
2941eda14cbcSMatt Macy void
vdev_dtl_dirty(vdev_t * vd,vdev_dtl_type_t t,uint64_t txg,uint64_t size)2942eda14cbcSMatt Macy vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size)
2943eda14cbcSMatt Macy {
2944eda14cbcSMatt Macy range_tree_t *rt = vd->vdev_dtl[t];
2945eda14cbcSMatt Macy
2946eda14cbcSMatt Macy ASSERT(t < DTL_TYPES);
2947eda14cbcSMatt Macy ASSERT(vd != vd->vdev_spa->spa_root_vdev);
2948eda14cbcSMatt Macy ASSERT(spa_writeable(vd->vdev_spa));
2949eda14cbcSMatt Macy
2950eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
2951eda14cbcSMatt Macy if (!range_tree_contains(rt, txg, size))
2952eda14cbcSMatt Macy range_tree_add(rt, txg, size);
2953eda14cbcSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
2954eda14cbcSMatt Macy }
29557877fdebSMatt Macy
29567877fdebSMatt Macy boolean_t
vdev_dtl_contains(vdev_t * vd,vdev_dtl_type_t t,uint64_t txg,uint64_t size)2957eda14cbcSMatt Macy vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size)
2958eda14cbcSMatt Macy {
2959eda14cbcSMatt Macy range_tree_t *rt = vd->vdev_dtl[t];
2960eda14cbcSMatt Macy boolean_t dirty = B_FALSE;
2961eda14cbcSMatt Macy
2962eda14cbcSMatt Macy ASSERT(t < DTL_TYPES);
2963eda14cbcSMatt Macy ASSERT(vd != vd->vdev_spa->spa_root_vdev);
2964eda14cbcSMatt Macy
2965eda14cbcSMatt Macy /*
2966eda14cbcSMatt Macy * While we are loading the pool, the DTLs have not been loaded yet.
2967eda14cbcSMatt Macy * This isn't a problem but it can result in devices being tried
2968eda14cbcSMatt Macy * which are known to not have the data. In which case, the import
2969eda14cbcSMatt Macy * is relying on the checksum to ensure that we get the right data.
2970eda14cbcSMatt Macy * Note that while importing we are only reading the MOS, which is
2971eda14cbcSMatt Macy * always checksummed.
2972eda14cbcSMatt Macy */
2973eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
2974eda14cbcSMatt Macy if (!range_tree_is_empty(rt))
2975eda14cbcSMatt Macy dirty = range_tree_contains(rt, txg, size);
2976eda14cbcSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
29777877fdebSMatt Macy
2978eda14cbcSMatt Macy return (dirty);
2979eda14cbcSMatt Macy }
2980eda14cbcSMatt Macy
2981eda14cbcSMatt Macy boolean_t
vdev_dtl_empty(vdev_t * vd,vdev_dtl_type_t t)2982eda14cbcSMatt Macy vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t t)
2983eda14cbcSMatt Macy {
2984eda14cbcSMatt Macy range_tree_t *rt = vd->vdev_dtl[t];
2985eda14cbcSMatt Macy boolean_t empty;
2986eda14cbcSMatt Macy
2987eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
2988eda14cbcSMatt Macy empty = range_tree_is_empty(rt);
29897877fdebSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
29907877fdebSMatt Macy
29917877fdebSMatt Macy return (empty);
2992eda14cbcSMatt Macy }
29937877fdebSMatt Macy
29947877fdebSMatt Macy /*
2995eda14cbcSMatt Macy * Check if the txg falls within the range which must be
29967877fdebSMatt Macy * resilvered. DVAs outside this range can always be skipped.
29977877fdebSMatt Macy */
29987877fdebSMatt Macy boolean_t
vdev_default_need_resilver(vdev_t * vd,const dva_t * dva,size_t psize,uint64_t phys_birth)29997877fdebSMatt Macy vdev_default_need_resilver(vdev_t *vd, const dva_t *dva, size_t psize,
3000eda14cbcSMatt Macy uint64_t phys_birth)
3001eda14cbcSMatt Macy {
3002eda14cbcSMatt Macy (void) dva, (void) psize;
3003eda14cbcSMatt Macy
3004eda14cbcSMatt Macy /* Set by sequential resilver. */
3005eda14cbcSMatt Macy if (phys_birth == TXG_UNKNOWN)
3006eda14cbcSMatt Macy return (B_TRUE);
3007eda14cbcSMatt Macy
3008eda14cbcSMatt Macy return (vdev_dtl_contains(vd, DTL_PARTIAL, phys_birth, 1));
3009eda14cbcSMatt Macy }
3010eda14cbcSMatt Macy
3011eda14cbcSMatt Macy /*
3012eda14cbcSMatt Macy * Returns B_TRUE if the vdev determines the DVA needs to be resilvered.
3013eda14cbcSMatt Macy */
3014eda14cbcSMatt Macy boolean_t
vdev_dtl_need_resilver(vdev_t * vd,const dva_t * dva,size_t psize,uint64_t phys_birth)3015eda14cbcSMatt Macy vdev_dtl_need_resilver(vdev_t *vd, const dva_t *dva, size_t psize,
3016eda14cbcSMatt Macy uint64_t phys_birth)
3017eda14cbcSMatt Macy {
3018eda14cbcSMatt Macy ASSERT(vd != vd->vdev_spa->spa_root_vdev);
3019eda14cbcSMatt Macy
3020eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_need_resilver == NULL ||
3021eda14cbcSMatt Macy vd->vdev_ops->vdev_op_leaf)
3022eda14cbcSMatt Macy return (B_TRUE);
3023eda14cbcSMatt Macy
3024eda14cbcSMatt Macy return (vd->vdev_ops->vdev_op_need_resilver(vd, dva, psize,
3025eda14cbcSMatt Macy phys_birth));
3026eda14cbcSMatt Macy }
3027eda14cbcSMatt Macy
3028eda14cbcSMatt Macy /*
3029eda14cbcSMatt Macy * Returns the lowest txg in the DTL range.
3030eda14cbcSMatt Macy */
3031eda14cbcSMatt Macy static uint64_t
vdev_dtl_min(vdev_t * vd)3032eda14cbcSMatt Macy vdev_dtl_min(vdev_t *vd)
3033eda14cbcSMatt Macy {
3034eda14cbcSMatt Macy ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock));
3035eda14cbcSMatt Macy ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0);
3036eda14cbcSMatt Macy ASSERT0(vd->vdev_children);
3037eda14cbcSMatt Macy
3038eda14cbcSMatt Macy return (range_tree_min(vd->vdev_dtl[DTL_MISSING]) - 1);
3039eda14cbcSMatt Macy }
3040eda14cbcSMatt Macy
3041eda14cbcSMatt Macy /*
3042eda14cbcSMatt Macy * Returns the highest txg in the DTL.
3043eda14cbcSMatt Macy */
3044eda14cbcSMatt Macy static uint64_t
vdev_dtl_max(vdev_t * vd)3045eda14cbcSMatt Macy vdev_dtl_max(vdev_t *vd)
3046eda14cbcSMatt Macy {
3047eda14cbcSMatt Macy ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock));
3048eda14cbcSMatt Macy ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0);
3049eda14cbcSMatt Macy ASSERT0(vd->vdev_children);
3050eda14cbcSMatt Macy
3051eda14cbcSMatt Macy return (range_tree_max(vd->vdev_dtl[DTL_MISSING]));
3052eda14cbcSMatt Macy }
3053eda14cbcSMatt Macy
3054eda14cbcSMatt Macy /*
3055eda14cbcSMatt Macy * Determine if a resilvering vdev should remove any DTL entries from
3056eda14cbcSMatt Macy * its range. If the vdev was resilvering for the entire duration of the
3057eda14cbcSMatt Macy * scan then it should excise that range from its DTLs. Otherwise, this
3058eda14cbcSMatt Macy * vdev is considered partially resilvered and should leave its DTL
3059eda14cbcSMatt Macy * entries intact. The comment in vdev_dtl_reassess() describes how we
3060eda14cbcSMatt Macy * excise the DTLs.
3061eda14cbcSMatt Macy */
3062eda14cbcSMatt Macy static boolean_t
vdev_dtl_should_excise(vdev_t * vd,boolean_t rebuild_done)3063eda14cbcSMatt Macy vdev_dtl_should_excise(vdev_t *vd, boolean_t rebuild_done)
3064eda14cbcSMatt Macy {
3065eda14cbcSMatt Macy ASSERT0(vd->vdev_children);
3066eda14cbcSMatt Macy
3067eda14cbcSMatt Macy if (vd->vdev_state < VDEV_STATE_DEGRADED)
3068eda14cbcSMatt Macy return (B_FALSE);
3069eda14cbcSMatt Macy
3070eda14cbcSMatt Macy if (vd->vdev_resilver_deferred)
3071eda14cbcSMatt Macy return (B_FALSE);
3072eda14cbcSMatt Macy
3073eda14cbcSMatt Macy if (range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]))
3074eda14cbcSMatt Macy return (B_TRUE);
3075eda14cbcSMatt Macy
3076eda14cbcSMatt Macy if (rebuild_done) {
3077eda14cbcSMatt Macy vdev_rebuild_t *vr = &vd->vdev_top->vdev_rebuild_config;
3078eda14cbcSMatt Macy vdev_rebuild_phys_t *vrp = &vr->vr_rebuild_phys;
3079eda14cbcSMatt Macy
3080eda14cbcSMatt Macy /* Rebuild not initiated by attach */
3081eda14cbcSMatt Macy if (vd->vdev_rebuild_txg == 0)
3082eda14cbcSMatt Macy return (B_TRUE);
3083eda14cbcSMatt Macy
3084eda14cbcSMatt Macy /*
3085eda14cbcSMatt Macy * When a rebuild completes without error then all missing data
3086eda14cbcSMatt Macy * up to the rebuild max txg has been reconstructed and the DTL
3087eda14cbcSMatt Macy * is eligible for excision.
3088eda14cbcSMatt Macy */
3089eda14cbcSMatt Macy if (vrp->vrp_rebuild_state == VDEV_REBUILD_COMPLETE &&
3090eda14cbcSMatt Macy vdev_dtl_max(vd) <= vrp->vrp_max_txg) {
3091eda14cbcSMatt Macy ASSERT3U(vrp->vrp_min_txg, <=, vdev_dtl_min(vd));
3092eda14cbcSMatt Macy ASSERT3U(vrp->vrp_min_txg, <, vd->vdev_rebuild_txg);
3093eda14cbcSMatt Macy ASSERT3U(vd->vdev_rebuild_txg, <=, vrp->vrp_max_txg);
3094eda14cbcSMatt Macy return (B_TRUE);
3095eda14cbcSMatt Macy }
3096eda14cbcSMatt Macy } else {
3097eda14cbcSMatt Macy dsl_scan_t *scn = vd->vdev_spa->spa_dsl_pool->dp_scan;
3098eda14cbcSMatt Macy dsl_scan_phys_t *scnp __maybe_unused = &scn->scn_phys;
3099eda14cbcSMatt Macy
3100eda14cbcSMatt Macy /* Resilver not initiated by attach */
3101eda14cbcSMatt Macy if (vd->vdev_resilver_txg == 0)
3102eda14cbcSMatt Macy return (B_TRUE);
3103eda14cbcSMatt Macy
3104eda14cbcSMatt Macy /*
3105eda14cbcSMatt Macy * When a resilver is initiated the scan will assign the
3106eda14cbcSMatt Macy * scn_max_txg value to the highest txg value that exists
3107eda14cbcSMatt Macy * in all DTLs. If this device's max DTL is not part of this
3108eda14cbcSMatt Macy * scan (i.e. it is not in the range (scn_min_txg, scn_max_txg]
3109eda14cbcSMatt Macy * then it is not eligible for excision.
3110eda14cbcSMatt Macy */
3111eda14cbcSMatt Macy if (vdev_dtl_max(vd) <= scn->scn_phys.scn_max_txg) {
3112eda14cbcSMatt Macy ASSERT3U(scnp->scn_min_txg, <=, vdev_dtl_min(vd));
3113eda14cbcSMatt Macy ASSERT3U(scnp->scn_min_txg, <, vd->vdev_resilver_txg);
3114eda14cbcSMatt Macy ASSERT3U(vd->vdev_resilver_txg, <=, scnp->scn_max_txg);
3115eda14cbcSMatt Macy return (B_TRUE);
3116eda14cbcSMatt Macy }
3117eda14cbcSMatt Macy }
3118eda14cbcSMatt Macy
3119eda14cbcSMatt Macy return (B_FALSE);
3120eda14cbcSMatt Macy }
3121eda14cbcSMatt Macy
3122eda14cbcSMatt Macy /*
3123eda14cbcSMatt Macy * Reassess DTLs after a config change or scrub completion. If txg == 0 no
3124eda14cbcSMatt Macy * write operations will be issued to the pool.
3125eda14cbcSMatt Macy */
3126eda14cbcSMatt Macy void
vdev_dtl_reassess(vdev_t * vd,uint64_t txg,uint64_t scrub_txg,boolean_t scrub_done,boolean_t rebuild_done)3127eda14cbcSMatt Macy vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
3128eda14cbcSMatt Macy boolean_t scrub_done, boolean_t rebuild_done)
3129eda14cbcSMatt Macy {
3130eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3131eda14cbcSMatt Macy avl_tree_t reftree;
3132eda14cbcSMatt Macy int minref;
3133eda14cbcSMatt Macy
3134eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
3135eda14cbcSMatt Macy
3136eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
3137eda14cbcSMatt Macy vdev_dtl_reassess(vd->vdev_child[c], txg,
3138eda14cbcSMatt Macy scrub_txg, scrub_done, rebuild_done);
3139eda14cbcSMatt Macy
3140eda14cbcSMatt Macy if (vd == spa->spa_root_vdev || !vdev_is_concrete(vd) || vd->vdev_aux)
3141eda14cbcSMatt Macy return;
3142eda14cbcSMatt Macy
3143eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf) {
3144eda14cbcSMatt Macy dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan;
3145eda14cbcSMatt Macy vdev_rebuild_t *vr = &vd->vdev_top->vdev_rebuild_config;
3146eda14cbcSMatt Macy boolean_t check_excise = B_FALSE;
3147eda14cbcSMatt Macy boolean_t wasempty = B_TRUE;
3148eda14cbcSMatt Macy
3149eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
3150eda14cbcSMatt Macy
3151eda14cbcSMatt Macy /*
3152eda14cbcSMatt Macy * If requested, pretend the scan or rebuild completed cleanly.
3153eda14cbcSMatt Macy */
3154eda14cbcSMatt Macy if (zfs_scan_ignore_errors) {
3155eda14cbcSMatt Macy if (scn != NULL)
3156eda14cbcSMatt Macy scn->scn_phys.scn_errors = 0;
3157eda14cbcSMatt Macy if (vr != NULL)
3158eda14cbcSMatt Macy vr->vr_rebuild_phys.vrp_errors = 0;
3159eda14cbcSMatt Macy }
3160eda14cbcSMatt Macy
3161eda14cbcSMatt Macy if (scrub_txg != 0 &&
3162eda14cbcSMatt Macy !range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) {
3163eda14cbcSMatt Macy wasempty = B_FALSE;
3164eda14cbcSMatt Macy zfs_dbgmsg("guid:%llu txg:%llu scrub:%llu started:%d "
3165eda14cbcSMatt Macy "dtl:%llu/%llu errors:%llu",
3166eda14cbcSMatt Macy (u_longlong_t)vd->vdev_guid, (u_longlong_t)txg,
3167eda14cbcSMatt Macy (u_longlong_t)scrub_txg, spa->spa_scrub_started,
3168eda14cbcSMatt Macy (u_longlong_t)vdev_dtl_min(vd),
3169eda14cbcSMatt Macy (u_longlong_t)vdev_dtl_max(vd),
3170eda14cbcSMatt Macy (u_longlong_t)(scn ? scn->scn_phys.scn_errors : 0));
3171eda14cbcSMatt Macy }
3172eda14cbcSMatt Macy
3173eda14cbcSMatt Macy /*
3174eda14cbcSMatt Macy * If we've completed a scrub/resilver or a rebuild cleanly
3175eda14cbcSMatt Macy * then determine if this vdev should remove any DTLs. We
3176eda14cbcSMatt Macy * only want to excise regions on vdevs that were available
3177eda14cbcSMatt Macy * during the entire duration of this scan.
3178eda14cbcSMatt Macy */
3179eda14cbcSMatt Macy if (rebuild_done &&
3180eda14cbcSMatt Macy vr != NULL && vr->vr_rebuild_phys.vrp_errors == 0) {
3181eda14cbcSMatt Macy check_excise = B_TRUE;
3182eda14cbcSMatt Macy } else {
3183eda14cbcSMatt Macy if (spa->spa_scrub_started ||
3184eda14cbcSMatt Macy (scn != NULL && scn->scn_phys.scn_errors == 0)) {
3185eda14cbcSMatt Macy check_excise = B_TRUE;
3186eda14cbcSMatt Macy }
3187eda14cbcSMatt Macy }
3188eda14cbcSMatt Macy
3189eda14cbcSMatt Macy if (scrub_txg && check_excise &&
3190eda14cbcSMatt Macy vdev_dtl_should_excise(vd, rebuild_done)) {
3191eda14cbcSMatt Macy /*
3192eda14cbcSMatt Macy * We completed a scrub, resilver or rebuild up to
3193eda14cbcSMatt Macy * scrub_txg. If we did it without rebooting, then
3194eda14cbcSMatt Macy * the scrub dtl will be valid, so excise the old
3195eda14cbcSMatt Macy * region and fold in the scrub dtl. Otherwise,
3196eda14cbcSMatt Macy * leave the dtl as-is if there was an error.
3197eda14cbcSMatt Macy *
3198eda14cbcSMatt Macy * There's little trick here: to excise the beginning
3199eda14cbcSMatt Macy * of the DTL_MISSING map, we put it into a reference
3200eda14cbcSMatt Macy * tree and then add a segment with refcnt -1 that
3201eda14cbcSMatt Macy * covers the range [0, scrub_txg). This means
3202eda14cbcSMatt Macy * that each txg in that range has refcnt -1 or 0.
3203eda14cbcSMatt Macy * We then add DTL_SCRUB with a refcnt of 2, so that
3204eda14cbcSMatt Macy * entries in the range [0, scrub_txg) will have a
3205eda14cbcSMatt Macy * positive refcnt -- either 1 or 2. We then convert
3206eda14cbcSMatt Macy * the reference tree into the new DTL_MISSING map.
3207eda14cbcSMatt Macy */
3208eda14cbcSMatt Macy space_reftree_create(&reftree);
3209eda14cbcSMatt Macy space_reftree_add_map(&reftree,
3210eda14cbcSMatt Macy vd->vdev_dtl[DTL_MISSING], 1);
3211eda14cbcSMatt Macy space_reftree_add_seg(&reftree, 0, scrub_txg, -1);
3212eda14cbcSMatt Macy space_reftree_add_map(&reftree,
3213eda14cbcSMatt Macy vd->vdev_dtl[DTL_SCRUB], 2);
3214eda14cbcSMatt Macy space_reftree_generate_map(&reftree,
3215eda14cbcSMatt Macy vd->vdev_dtl[DTL_MISSING], 1);
3216eda14cbcSMatt Macy space_reftree_destroy(&reftree);
3217eda14cbcSMatt Macy
3218eda14cbcSMatt Macy if (!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) {
3219eda14cbcSMatt Macy zfs_dbgmsg("update DTL_MISSING:%llu/%llu",
3220eda14cbcSMatt Macy (u_longlong_t)vdev_dtl_min(vd),
3221eda14cbcSMatt Macy (u_longlong_t)vdev_dtl_max(vd));
3222eda14cbcSMatt Macy } else if (!wasempty) {
3223eda14cbcSMatt Macy zfs_dbgmsg("DTL_MISSING is now empty");
3224eda14cbcSMatt Macy }
3225eda14cbcSMatt Macy }
3226eda14cbcSMatt Macy range_tree_vacate(vd->vdev_dtl[DTL_PARTIAL], NULL, NULL);
3227eda14cbcSMatt Macy range_tree_walk(vd->vdev_dtl[DTL_MISSING],
3228eda14cbcSMatt Macy range_tree_add, vd->vdev_dtl[DTL_PARTIAL]);
3229eda14cbcSMatt Macy if (scrub_done)
3230eda14cbcSMatt Macy range_tree_vacate(vd->vdev_dtl[DTL_SCRUB], NULL, NULL);
3231eda14cbcSMatt Macy range_tree_vacate(vd->vdev_dtl[DTL_OUTAGE], NULL, NULL);
3232eda14cbcSMatt Macy if (!vdev_readable(vd))
3233eda14cbcSMatt Macy range_tree_add(vd->vdev_dtl[DTL_OUTAGE], 0, -1ULL);
3234eda14cbcSMatt Macy else
3235eda14cbcSMatt Macy range_tree_walk(vd->vdev_dtl[DTL_MISSING],
3236eda14cbcSMatt Macy range_tree_add, vd->vdev_dtl[DTL_OUTAGE]);
3237eda14cbcSMatt Macy
3238eda14cbcSMatt Macy /*
3239eda14cbcSMatt Macy * If the vdev was resilvering or rebuilding and no longer
3240eda14cbcSMatt Macy * has any DTLs then reset the appropriate flag and dirty
3241eda14cbcSMatt Macy * the top level so that we persist the change.
3242eda14cbcSMatt Macy */
3243eda14cbcSMatt Macy if (txg != 0 &&
3244eda14cbcSMatt Macy range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) &&
3245eda14cbcSMatt Macy range_tree_is_empty(vd->vdev_dtl[DTL_OUTAGE])) {
3246eda14cbcSMatt Macy if (vd->vdev_rebuild_txg != 0) {
3247eda14cbcSMatt Macy vd->vdev_rebuild_txg = 0;
3248eda14cbcSMatt Macy vdev_config_dirty(vd->vdev_top);
3249eda14cbcSMatt Macy } else if (vd->vdev_resilver_txg != 0) {
3250eda14cbcSMatt Macy vd->vdev_resilver_txg = 0;
3251eda14cbcSMatt Macy vdev_config_dirty(vd->vdev_top);
3252eda14cbcSMatt Macy }
3253eda14cbcSMatt Macy }
3254eda14cbcSMatt Macy
3255eda14cbcSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
3256eda14cbcSMatt Macy
3257eda14cbcSMatt Macy if (txg != 0)
3258eda14cbcSMatt Macy vdev_dirty(vd->vdev_top, VDD_DTL, vd, txg);
3259eda14cbcSMatt Macy } else {
3260eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
3261eda14cbcSMatt Macy for (int t = 0; t < DTL_TYPES; t++) {
3262eda14cbcSMatt Macy /* account for child's outage in parent's missing map */
3263eda14cbcSMatt Macy int s = (t == DTL_MISSING) ? DTL_OUTAGE: t;
3264eda14cbcSMatt Macy if (t == DTL_SCRUB) {
3265eda14cbcSMatt Macy /* leaf vdevs only */
3266eda14cbcSMatt Macy continue;
3267eda14cbcSMatt Macy }
3268eda14cbcSMatt Macy if (t == DTL_PARTIAL) {
3269eda14cbcSMatt Macy /* i.e. non-zero */
3270eda14cbcSMatt Macy minref = 1;
3271eda14cbcSMatt Macy } else if (vdev_get_nparity(vd) != 0) {
3272eda14cbcSMatt Macy /* RAIDZ, DRAID */
3273eda14cbcSMatt Macy minref = vdev_get_nparity(vd) + 1;
3274eda14cbcSMatt Macy } else {
3275eda14cbcSMatt Macy /* any kind of mirror */
3276eda14cbcSMatt Macy minref = vd->vdev_children;
3277eda14cbcSMatt Macy }
3278eda14cbcSMatt Macy space_reftree_create(&reftree);
3279eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++) {
3280eda14cbcSMatt Macy vdev_t *cvd = vd->vdev_child[c];
3281eda14cbcSMatt Macy mutex_enter(&cvd->vdev_dtl_lock);
3282eda14cbcSMatt Macy space_reftree_add_map(&reftree,
3283eda14cbcSMatt Macy cvd->vdev_dtl[s], 1);
3284eda14cbcSMatt Macy mutex_exit(&cvd->vdev_dtl_lock);
3285eda14cbcSMatt Macy }
3286eda14cbcSMatt Macy space_reftree_generate_map(&reftree,
3287eda14cbcSMatt Macy vd->vdev_dtl[t], minref);
3288eda14cbcSMatt Macy space_reftree_destroy(&reftree);
3289eda14cbcSMatt Macy }
3290eda14cbcSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
3291eda14cbcSMatt Macy }
3292eda14cbcSMatt Macy
3293eda14cbcSMatt Macy if (vd->vdev_top->vdev_ops == &vdev_raidz_ops) {
3294eda14cbcSMatt Macy raidz_dtl_reassessed(vd);
3295eda14cbcSMatt Macy }
3296eda14cbcSMatt Macy }
3297eda14cbcSMatt Macy
3298eda14cbcSMatt Macy /*
3299eda14cbcSMatt Macy * Iterate over all the vdevs except spare, and post kobj events
3300eda14cbcSMatt Macy */
3301eda14cbcSMatt Macy void
vdev_post_kobj_evt(vdev_t * vd)3302eda14cbcSMatt Macy vdev_post_kobj_evt(vdev_t *vd)
3303eda14cbcSMatt Macy {
3304eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_kobj_evt_post &&
3305eda14cbcSMatt Macy vd->vdev_kobj_flag == B_FALSE) {
3306eda14cbcSMatt Macy vd->vdev_kobj_flag = B_TRUE;
3307eda14cbcSMatt Macy vd->vdev_ops->vdev_op_kobj_evt_post(vd);
3308eda14cbcSMatt Macy }
3309eda14cbcSMatt Macy
3310eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
3311eda14cbcSMatt Macy vdev_post_kobj_evt(vd->vdev_child[c]);
3312eda14cbcSMatt Macy }
3313eda14cbcSMatt Macy
3314eda14cbcSMatt Macy /*
3315eda14cbcSMatt Macy * Iterate over all the vdevs except spare, and clear kobj events
3316eda14cbcSMatt Macy */
3317eda14cbcSMatt Macy void
vdev_clear_kobj_evt(vdev_t * vd)3318eda14cbcSMatt Macy vdev_clear_kobj_evt(vdev_t *vd)
3319eda14cbcSMatt Macy {
3320eda14cbcSMatt Macy vd->vdev_kobj_flag = B_FALSE;
3321eda14cbcSMatt Macy
3322eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
3323eda14cbcSMatt Macy vdev_clear_kobj_evt(vd->vdev_child[c]);
3324eda14cbcSMatt Macy }
3325eda14cbcSMatt Macy
3326eda14cbcSMatt Macy int
vdev_dtl_load(vdev_t * vd)3327eda14cbcSMatt Macy vdev_dtl_load(vdev_t *vd)
3328eda14cbcSMatt Macy {
3329eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3330eda14cbcSMatt Macy objset_t *mos = spa->spa_meta_objset;
3331eda14cbcSMatt Macy range_tree_t *rt;
3332eda14cbcSMatt Macy int error = 0;
3333eda14cbcSMatt Macy
3334eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf && vd->vdev_dtl_object != 0) {
3335eda14cbcSMatt Macy ASSERT(vdev_is_concrete(vd));
3336eda14cbcSMatt Macy
3337eda14cbcSMatt Macy /*
3338eda14cbcSMatt Macy * If the dtl cannot be sync'd there is no need to open it.
3339eda14cbcSMatt Macy */
3340eda14cbcSMatt Macy if (spa->spa_mode == SPA_MODE_READ && !spa->spa_read_spacemaps)
3341eda14cbcSMatt Macy return (0);
3342eda14cbcSMatt Macy
3343eda14cbcSMatt Macy error = space_map_open(&vd->vdev_dtl_sm, mos,
3344eda14cbcSMatt Macy vd->vdev_dtl_object, 0, -1ULL, 0);
3345eda14cbcSMatt Macy if (error)
3346eda14cbcSMatt Macy return (error);
3347eda14cbcSMatt Macy ASSERT(vd->vdev_dtl_sm != NULL);
3348eda14cbcSMatt Macy
3349eda14cbcSMatt Macy rt = range_tree_create(NULL, RANGE_SEG64, NULL, 0, 0);
3350eda14cbcSMatt Macy error = space_map_load(vd->vdev_dtl_sm, rt, SM_ALLOC);
3351eda14cbcSMatt Macy if (error == 0) {
3352eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
3353eda14cbcSMatt Macy range_tree_walk(rt, range_tree_add,
3354eda14cbcSMatt Macy vd->vdev_dtl[DTL_MISSING]);
3355eda14cbcSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
3356eda14cbcSMatt Macy }
3357eda14cbcSMatt Macy
3358eda14cbcSMatt Macy range_tree_vacate(rt, NULL, NULL);
3359eda14cbcSMatt Macy range_tree_destroy(rt);
3360eda14cbcSMatt Macy
3361eda14cbcSMatt Macy return (error);
3362eda14cbcSMatt Macy }
3363eda14cbcSMatt Macy
3364eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++) {
3365eda14cbcSMatt Macy error = vdev_dtl_load(vd->vdev_child[c]);
3366eda14cbcSMatt Macy if (error != 0)
3367eda14cbcSMatt Macy break;
3368eda14cbcSMatt Macy }
3369eda14cbcSMatt Macy
3370eda14cbcSMatt Macy return (error);
3371eda14cbcSMatt Macy }
3372eda14cbcSMatt Macy
3373eda14cbcSMatt Macy static void
vdev_zap_allocation_data(vdev_t * vd,dmu_tx_t * tx)3374eda14cbcSMatt Macy vdev_zap_allocation_data(vdev_t *vd, dmu_tx_t *tx)
3375eda14cbcSMatt Macy {
3376eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3377eda14cbcSMatt Macy objset_t *mos = spa->spa_meta_objset;
3378eda14cbcSMatt Macy vdev_alloc_bias_t alloc_bias = vd->vdev_alloc_bias;
3379eda14cbcSMatt Macy const char *string;
3380eda14cbcSMatt Macy
3381eda14cbcSMatt Macy ASSERT(alloc_bias != VDEV_BIAS_NONE);
3382eda14cbcSMatt Macy
3383eda14cbcSMatt Macy string =
3384eda14cbcSMatt Macy (alloc_bias == VDEV_BIAS_LOG) ? VDEV_ALLOC_BIAS_LOG :
3385eda14cbcSMatt Macy (alloc_bias == VDEV_BIAS_SPECIAL) ? VDEV_ALLOC_BIAS_SPECIAL :
3386eda14cbcSMatt Macy (alloc_bias == VDEV_BIAS_DEDUP) ? VDEV_ALLOC_BIAS_DEDUP : NULL;
3387eda14cbcSMatt Macy
3388eda14cbcSMatt Macy ASSERT(string != NULL);
3389eda14cbcSMatt Macy VERIFY0(zap_add(mos, vd->vdev_top_zap, VDEV_TOP_ZAP_ALLOCATION_BIAS,
3390eda14cbcSMatt Macy 1, strlen(string) + 1, string, tx));
3391eda14cbcSMatt Macy
3392eda14cbcSMatt Macy if (alloc_bias == VDEV_BIAS_SPECIAL || alloc_bias == VDEV_BIAS_DEDUP) {
3393eda14cbcSMatt Macy spa_activate_allocation_classes(spa, tx);
3394eda14cbcSMatt Macy }
3395eda14cbcSMatt Macy }
3396eda14cbcSMatt Macy
3397eda14cbcSMatt Macy void
vdev_destroy_unlink_zap(vdev_t * vd,uint64_t zapobj,dmu_tx_t * tx)3398eda14cbcSMatt Macy vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, dmu_tx_t *tx)
3399eda14cbcSMatt Macy {
3400eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3401eda14cbcSMatt Macy
3402eda14cbcSMatt Macy VERIFY0(zap_destroy(spa->spa_meta_objset, zapobj, tx));
3403eda14cbcSMatt Macy VERIFY0(zap_remove_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps,
3404eda14cbcSMatt Macy zapobj, tx));
3405eda14cbcSMatt Macy }
3406eda14cbcSMatt Macy
3407eda14cbcSMatt Macy uint64_t
vdev_create_link_zap(vdev_t * vd,dmu_tx_t * tx)3408eda14cbcSMatt Macy vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx)
3409eda14cbcSMatt Macy {
3410eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3411eda14cbcSMatt Macy uint64_t zap = zap_create(spa->spa_meta_objset, DMU_OTN_ZAP_METADATA,
3412eda14cbcSMatt Macy DMU_OT_NONE, 0, tx);
3413eda14cbcSMatt Macy
3414eda14cbcSMatt Macy ASSERT(zap != 0);
3415eda14cbcSMatt Macy VERIFY0(zap_add_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps,
3416eda14cbcSMatt Macy zap, tx));
3417eda14cbcSMatt Macy
3418eda14cbcSMatt Macy return (zap);
3419eda14cbcSMatt Macy }
3420eda14cbcSMatt Macy
3421eda14cbcSMatt Macy void
vdev_construct_zaps(vdev_t * vd,dmu_tx_t * tx)3422eda14cbcSMatt Macy vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx)
3423eda14cbcSMatt Macy {
3424eda14cbcSMatt Macy if (vd->vdev_ops != &vdev_hole_ops &&
3425eda14cbcSMatt Macy vd->vdev_ops != &vdev_missing_ops &&
3426eda14cbcSMatt Macy vd->vdev_ops != &vdev_root_ops &&
3427eda14cbcSMatt Macy !vd->vdev_top->vdev_removing) {
3428eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf && vd->vdev_leaf_zap == 0) {
3429eda14cbcSMatt Macy vd->vdev_leaf_zap = vdev_create_link_zap(vd, tx);
3430eda14cbcSMatt Macy }
3431eda14cbcSMatt Macy if (vd == vd->vdev_top && vd->vdev_top_zap == 0) {
3432eda14cbcSMatt Macy vd->vdev_top_zap = vdev_create_link_zap(vd, tx);
3433eda14cbcSMatt Macy if (vd->vdev_alloc_bias != VDEV_BIAS_NONE)
3434eda14cbcSMatt Macy vdev_zap_allocation_data(vd, tx);
3435eda14cbcSMatt Macy }
3436eda14cbcSMatt Macy }
3437eda14cbcSMatt Macy if (vd->vdev_ops == &vdev_root_ops && vd->vdev_root_zap == 0 &&
3438eda14cbcSMatt Macy spa_feature_is_enabled(vd->vdev_spa, SPA_FEATURE_AVZ_V2)) {
3439eda14cbcSMatt Macy if (!spa_feature_is_active(vd->vdev_spa, SPA_FEATURE_AVZ_V2))
3440eda14cbcSMatt Macy spa_feature_incr(vd->vdev_spa, SPA_FEATURE_AVZ_V2, tx);
3441eda14cbcSMatt Macy vd->vdev_root_zap = vdev_create_link_zap(vd, tx);
3442eda14cbcSMatt Macy }
3443eda14cbcSMatt Macy
3444eda14cbcSMatt Macy for (uint64_t i = 0; i < vd->vdev_children; i++) {
3445eda14cbcSMatt Macy vdev_construct_zaps(vd->vdev_child[i], tx);
3446eda14cbcSMatt Macy }
3447eda14cbcSMatt Macy }
3448eda14cbcSMatt Macy
3449eda14cbcSMatt Macy static void
vdev_dtl_sync(vdev_t * vd,uint64_t txg)3450eda14cbcSMatt Macy vdev_dtl_sync(vdev_t *vd, uint64_t txg)
3451eda14cbcSMatt Macy {
3452eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3453eda14cbcSMatt Macy range_tree_t *rt = vd->vdev_dtl[DTL_MISSING];
3454eda14cbcSMatt Macy objset_t *mos = spa->spa_meta_objset;
3455eda14cbcSMatt Macy range_tree_t *rtsync;
3456eda14cbcSMatt Macy dmu_tx_t *tx;
3457eda14cbcSMatt Macy uint64_t object = space_map_object(vd->vdev_dtl_sm);
3458eda14cbcSMatt Macy
3459eda14cbcSMatt Macy ASSERT(vdev_is_concrete(vd));
3460eda14cbcSMatt Macy ASSERT(vd->vdev_ops->vdev_op_leaf);
3461eda14cbcSMatt Macy
3462eda14cbcSMatt Macy tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg);
3463eda14cbcSMatt Macy
3464eda14cbcSMatt Macy if (vd->vdev_detached || vd->vdev_top->vdev_removing) {
3465eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
3466eda14cbcSMatt Macy space_map_free(vd->vdev_dtl_sm, tx);
3467eda14cbcSMatt Macy space_map_close(vd->vdev_dtl_sm);
3468eda14cbcSMatt Macy vd->vdev_dtl_sm = NULL;
3469eda14cbcSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
3470eda14cbcSMatt Macy
3471eda14cbcSMatt Macy /*
3472eda14cbcSMatt Macy * We only destroy the leaf ZAP for detached leaves or for
3473eda14cbcSMatt Macy * removed log devices. Removed data devices handle leaf ZAP
3474eda14cbcSMatt Macy * cleanup later, once cancellation is no longer possible.
3475eda14cbcSMatt Macy */
3476eda14cbcSMatt Macy if (vd->vdev_leaf_zap != 0 && (vd->vdev_detached ||
3477eda14cbcSMatt Macy vd->vdev_top->vdev_islog)) {
3478eda14cbcSMatt Macy vdev_destroy_unlink_zap(vd, vd->vdev_leaf_zap, tx);
3479eda14cbcSMatt Macy vd->vdev_leaf_zap = 0;
3480eda14cbcSMatt Macy }
3481eda14cbcSMatt Macy
3482eda14cbcSMatt Macy dmu_tx_commit(tx);
3483eda14cbcSMatt Macy return;
3484eda14cbcSMatt Macy }
3485eda14cbcSMatt Macy
3486eda14cbcSMatt Macy if (vd->vdev_dtl_sm == NULL) {
3487eda14cbcSMatt Macy uint64_t new_object;
3488eda14cbcSMatt Macy
3489eda14cbcSMatt Macy new_object = space_map_alloc(mos, zfs_vdev_dtl_sm_blksz, tx);
3490eda14cbcSMatt Macy VERIFY3U(new_object, !=, 0);
3491eda14cbcSMatt Macy
3492eda14cbcSMatt Macy VERIFY0(space_map_open(&vd->vdev_dtl_sm, mos, new_object,
3493eda14cbcSMatt Macy 0, -1ULL, 0));
3494eda14cbcSMatt Macy ASSERT(vd->vdev_dtl_sm != NULL);
3495eda14cbcSMatt Macy }
3496eda14cbcSMatt Macy
3497eda14cbcSMatt Macy rtsync = range_tree_create(NULL, RANGE_SEG64, NULL, 0, 0);
3498eda14cbcSMatt Macy
3499eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
3500eda14cbcSMatt Macy range_tree_walk(rt, range_tree_add, rtsync);
3501eda14cbcSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
3502eda14cbcSMatt Macy
3503eda14cbcSMatt Macy space_map_truncate(vd->vdev_dtl_sm, zfs_vdev_dtl_sm_blksz, tx);
3504eda14cbcSMatt Macy space_map_write(vd->vdev_dtl_sm, rtsync, SM_ALLOC, SM_NO_VDEVID, tx);
3505eda14cbcSMatt Macy range_tree_vacate(rtsync, NULL, NULL);
3506eda14cbcSMatt Macy
3507eda14cbcSMatt Macy range_tree_destroy(rtsync);
3508eda14cbcSMatt Macy
3509eda14cbcSMatt Macy /*
3510eda14cbcSMatt Macy * If the object for the space map has changed then dirty
3511eda14cbcSMatt Macy * the top level so that we update the config.
3512eda14cbcSMatt Macy */
3513eda14cbcSMatt Macy if (object != space_map_object(vd->vdev_dtl_sm)) {
3514eda14cbcSMatt Macy vdev_dbgmsg(vd, "txg %llu, spa %s, DTL old object %llu, "
3515eda14cbcSMatt Macy "new object %llu", (u_longlong_t)txg, spa_name(spa),
3516eda14cbcSMatt Macy (u_longlong_t)object,
3517eda14cbcSMatt Macy (u_longlong_t)space_map_object(vd->vdev_dtl_sm));
3518eda14cbcSMatt Macy vdev_config_dirty(vd->vdev_top);
3519eda14cbcSMatt Macy }
3520eda14cbcSMatt Macy
3521eda14cbcSMatt Macy dmu_tx_commit(tx);
3522eda14cbcSMatt Macy }
3523eda14cbcSMatt Macy
3524eda14cbcSMatt Macy /*
3525eda14cbcSMatt Macy * Determine whether the specified vdev can be offlined/detached/removed
3526eda14cbcSMatt Macy * without losing data.
3527eda14cbcSMatt Macy */
3528eda14cbcSMatt Macy boolean_t
vdev_dtl_required(vdev_t * vd)3529eda14cbcSMatt Macy vdev_dtl_required(vdev_t *vd)
3530eda14cbcSMatt Macy {
3531eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3532eda14cbcSMatt Macy vdev_t *tvd = vd->vdev_top;
3533eda14cbcSMatt Macy uint8_t cant_read = vd->vdev_cant_read;
3534eda14cbcSMatt Macy boolean_t required;
3535eda14cbcSMatt Macy
3536eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
3537eda14cbcSMatt Macy
3538eda14cbcSMatt Macy if (vd == spa->spa_root_vdev || vd == tvd)
3539eda14cbcSMatt Macy return (B_TRUE);
3540eda14cbcSMatt Macy
3541eda14cbcSMatt Macy /*
3542eda14cbcSMatt Macy * Temporarily mark the device as unreadable, and then determine
3543eda14cbcSMatt Macy * whether this results in any DTL outages in the top-level vdev.
3544eda14cbcSMatt Macy * If not, we can safely offline/detach/remove the device.
3545eda14cbcSMatt Macy */
3546eda14cbcSMatt Macy vd->vdev_cant_read = B_TRUE;
3547eda14cbcSMatt Macy vdev_dtl_reassess(tvd, 0, 0, B_FALSE, B_FALSE);
3548eda14cbcSMatt Macy required = !vdev_dtl_empty(tvd, DTL_OUTAGE);
3549eda14cbcSMatt Macy vd->vdev_cant_read = cant_read;
3550eda14cbcSMatt Macy vdev_dtl_reassess(tvd, 0, 0, B_FALSE, B_FALSE);
3551eda14cbcSMatt Macy
3552eda14cbcSMatt Macy if (!required && zio_injection_enabled) {
3553eda14cbcSMatt Macy required = !!zio_handle_device_injection(vd, NULL,
3554eda14cbcSMatt Macy SET_ERROR(ECHILD));
3555eda14cbcSMatt Macy }
3556eda14cbcSMatt Macy
3557eda14cbcSMatt Macy return (required);
3558eda14cbcSMatt Macy }
3559eda14cbcSMatt Macy
3560eda14cbcSMatt Macy /*
3561eda14cbcSMatt Macy * Determine if resilver is needed, and if so the txg range.
3562eda14cbcSMatt Macy */
3563eda14cbcSMatt Macy boolean_t
vdev_resilver_needed(vdev_t * vd,uint64_t * minp,uint64_t * maxp)3564eda14cbcSMatt Macy vdev_resilver_needed(vdev_t *vd, uint64_t *minp, uint64_t *maxp)
3565eda14cbcSMatt Macy {
3566eda14cbcSMatt Macy boolean_t needed = B_FALSE;
3567eda14cbcSMatt Macy uint64_t thismin = UINT64_MAX;
3568eda14cbcSMatt Macy uint64_t thismax = 0;
3569eda14cbcSMatt Macy
3570eda14cbcSMatt Macy if (vd->vdev_children == 0) {
3571eda14cbcSMatt Macy mutex_enter(&vd->vdev_dtl_lock);
3572eda14cbcSMatt Macy if (!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) &&
3573eda14cbcSMatt Macy vdev_writeable(vd)) {
3574eda14cbcSMatt Macy
3575eda14cbcSMatt Macy thismin = vdev_dtl_min(vd);
3576eda14cbcSMatt Macy thismax = vdev_dtl_max(vd);
3577eda14cbcSMatt Macy needed = B_TRUE;
3578eda14cbcSMatt Macy }
3579eda14cbcSMatt Macy mutex_exit(&vd->vdev_dtl_lock);
3580eda14cbcSMatt Macy } else {
3581eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++) {
3582eda14cbcSMatt Macy vdev_t *cvd = vd->vdev_child[c];
3583eda14cbcSMatt Macy uint64_t cmin, cmax;
3584eda14cbcSMatt Macy
3585eda14cbcSMatt Macy if (vdev_resilver_needed(cvd, &cmin, &cmax)) {
3586eda14cbcSMatt Macy thismin = MIN(thismin, cmin);
3587eda14cbcSMatt Macy thismax = MAX(thismax, cmax);
3588eda14cbcSMatt Macy needed = B_TRUE;
3589eda14cbcSMatt Macy }
3590eda14cbcSMatt Macy }
3591eda14cbcSMatt Macy }
3592eda14cbcSMatt Macy
3593eda14cbcSMatt Macy if (needed && minp) {
3594eda14cbcSMatt Macy *minp = thismin;
3595eda14cbcSMatt Macy *maxp = thismax;
3596eda14cbcSMatt Macy }
3597eda14cbcSMatt Macy return (needed);
3598eda14cbcSMatt Macy }
3599eda14cbcSMatt Macy
3600eda14cbcSMatt Macy /*
3601eda14cbcSMatt Macy * Gets the checkpoint space map object from the vdev's ZAP. On success sm_obj
3602eda14cbcSMatt Macy * will contain either the checkpoint spacemap object or zero if none exists.
3603eda14cbcSMatt Macy * All other errors are returned to the caller.
3604eda14cbcSMatt Macy */
3605eda14cbcSMatt Macy int
vdev_checkpoint_sm_object(vdev_t * vd,uint64_t * sm_obj)3606eda14cbcSMatt Macy vdev_checkpoint_sm_object(vdev_t *vd, uint64_t *sm_obj)
3607eda14cbcSMatt Macy {
3608eda14cbcSMatt Macy ASSERT0(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER));
3609eda14cbcSMatt Macy
3610eda14cbcSMatt Macy if (vd->vdev_top_zap == 0) {
3611eda14cbcSMatt Macy *sm_obj = 0;
3612eda14cbcSMatt Macy return (0);
3613eda14cbcSMatt Macy }
3614eda14cbcSMatt Macy
3615eda14cbcSMatt Macy int error = zap_lookup(spa_meta_objset(vd->vdev_spa), vd->vdev_top_zap,
3616eda14cbcSMatt Macy VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, sizeof (uint64_t), 1, sm_obj);
3617eda14cbcSMatt Macy if (error == ENOENT) {
3618eda14cbcSMatt Macy *sm_obj = 0;
3619eda14cbcSMatt Macy error = 0;
3620eda14cbcSMatt Macy }
3621eda14cbcSMatt Macy
3622eda14cbcSMatt Macy return (error);
3623eda14cbcSMatt Macy }
3624eda14cbcSMatt Macy
3625eda14cbcSMatt Macy int
vdev_load(vdev_t * vd)3626eda14cbcSMatt Macy vdev_load(vdev_t *vd)
3627eda14cbcSMatt Macy {
3628eda14cbcSMatt Macy int children = vd->vdev_children;
3629eda14cbcSMatt Macy int error = 0;
3630eda14cbcSMatt Macy taskq_t *tq = NULL;
3631eda14cbcSMatt Macy
3632eda14cbcSMatt Macy /*
3633eda14cbcSMatt Macy * It's only worthwhile to use the taskq for the root vdev, because the
3634eda14cbcSMatt Macy * slow part is metaslab_init, and that only happens for top-level
3635eda14cbcSMatt Macy * vdevs.
3636eda14cbcSMatt Macy */
3637eda14cbcSMatt Macy if (vd->vdev_ops == &vdev_root_ops && vd->vdev_children > 0) {
3638eda14cbcSMatt Macy tq = taskq_create("vdev_load", children, minclsyspri,
3639eda14cbcSMatt Macy children, children, TASKQ_PREPOPULATE);
3640eda14cbcSMatt Macy }
3641eda14cbcSMatt Macy
3642eda14cbcSMatt Macy /*
3643eda14cbcSMatt Macy * Recursively load all children.
3644eda14cbcSMatt Macy */
3645eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++) {
3646eda14cbcSMatt Macy vdev_t *cvd = vd->vdev_child[c];
3647eda14cbcSMatt Macy
3648eda14cbcSMatt Macy if (tq == NULL || vdev_uses_zvols(cvd)) {
3649eda14cbcSMatt Macy cvd->vdev_load_error = vdev_load(cvd);
3650eda14cbcSMatt Macy } else {
3651eda14cbcSMatt Macy VERIFY(taskq_dispatch(tq, vdev_load_child,
3652eda14cbcSMatt Macy cvd, TQ_SLEEP) != TASKQID_INVALID);
3653eda14cbcSMatt Macy }
3654eda14cbcSMatt Macy }
3655eda14cbcSMatt Macy
3656eda14cbcSMatt Macy if (tq != NULL) {
3657eda14cbcSMatt Macy taskq_wait(tq);
3658eda14cbcSMatt Macy taskq_destroy(tq);
3659eda14cbcSMatt Macy }
3660eda14cbcSMatt Macy
3661eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++) {
3662eda14cbcSMatt Macy int error = vd->vdev_child[c]->vdev_load_error;
3663eda14cbcSMatt Macy
3664eda14cbcSMatt Macy if (error != 0)
3665eda14cbcSMatt Macy return (error);
3666eda14cbcSMatt Macy }
3667eda14cbcSMatt Macy
3668eda14cbcSMatt Macy vdev_set_deflate_ratio(vd);
3669eda14cbcSMatt Macy
3670eda14cbcSMatt Macy if (vd->vdev_ops == &vdev_raidz_ops) {
3671eda14cbcSMatt Macy error = vdev_raidz_load(vd);
3672eda14cbcSMatt Macy if (error != 0)
3673eda14cbcSMatt Macy return (error);
3674eda14cbcSMatt Macy }
3675eda14cbcSMatt Macy
3676eda14cbcSMatt Macy /*
3677eda14cbcSMatt Macy * On spa_load path, grab the allocation bias from our zap
3678eda14cbcSMatt Macy */
3679eda14cbcSMatt Macy if (vd == vd->vdev_top && vd->vdev_top_zap != 0) {
3680eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3681eda14cbcSMatt Macy char bias_str[64];
3682eda14cbcSMatt Macy
3683eda14cbcSMatt Macy error = zap_lookup(spa->spa_meta_objset, vd->vdev_top_zap,
3684eda14cbcSMatt Macy VDEV_TOP_ZAP_ALLOCATION_BIAS, 1, sizeof (bias_str),
3685eda14cbcSMatt Macy bias_str);
3686eda14cbcSMatt Macy if (error == 0) {
3687eda14cbcSMatt Macy ASSERT(vd->vdev_alloc_bias == VDEV_BIAS_NONE);
3688eda14cbcSMatt Macy vd->vdev_alloc_bias = vdev_derive_alloc_bias(bias_str);
3689eda14cbcSMatt Macy } else if (error != ENOENT) {
3690eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
3691eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
3692eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: zap_lookup(top_zap=%llu) "
3693eda14cbcSMatt Macy "failed [error=%d]",
3694eda14cbcSMatt Macy (u_longlong_t)vd->vdev_top_zap, error);
3695eda14cbcSMatt Macy return (error);
3696eda14cbcSMatt Macy }
3697eda14cbcSMatt Macy }
3698eda14cbcSMatt Macy
3699eda14cbcSMatt Macy if (vd == vd->vdev_top && vd->vdev_top_zap != 0) {
3700eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3701eda14cbcSMatt Macy uint64_t failfast;
3702eda14cbcSMatt Macy
3703eda14cbcSMatt Macy error = zap_lookup(spa->spa_meta_objset, vd->vdev_top_zap,
3704eda14cbcSMatt Macy vdev_prop_to_name(VDEV_PROP_FAILFAST), sizeof (failfast),
3705eda14cbcSMatt Macy 1, &failfast);
3706eda14cbcSMatt Macy if (error == 0) {
3707eda14cbcSMatt Macy vd->vdev_failfast = failfast & 1;
3708eda14cbcSMatt Macy } else if (error == ENOENT) {
3709eda14cbcSMatt Macy vd->vdev_failfast = vdev_prop_default_numeric(
3710eda14cbcSMatt Macy VDEV_PROP_FAILFAST);
3711eda14cbcSMatt Macy } else {
3712eda14cbcSMatt Macy vdev_dbgmsg(vd,
3713eda14cbcSMatt Macy "vdev_load: zap_lookup(top_zap=%llu) "
3714eda14cbcSMatt Macy "failed [error=%d]",
3715eda14cbcSMatt Macy (u_longlong_t)vd->vdev_top_zap, error);
3716eda14cbcSMatt Macy }
3717eda14cbcSMatt Macy }
3718eda14cbcSMatt Macy
3719eda14cbcSMatt Macy /*
3720eda14cbcSMatt Macy * Load any rebuild state from the top-level vdev zap.
3721eda14cbcSMatt Macy */
3722eda14cbcSMatt Macy if (vd == vd->vdev_top && vd->vdev_top_zap != 0) {
3723eda14cbcSMatt Macy error = vdev_rebuild_load(vd);
3724eda14cbcSMatt Macy if (error && error != ENOTSUP) {
3725eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
3726eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
3727eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: vdev_rebuild_load "
3728eda14cbcSMatt Macy "failed [error=%d]", error);
3729eda14cbcSMatt Macy return (error);
3730eda14cbcSMatt Macy }
3731eda14cbcSMatt Macy }
3732eda14cbcSMatt Macy
3733eda14cbcSMatt Macy if (vd->vdev_top_zap != 0 || vd->vdev_leaf_zap != 0) {
3734eda14cbcSMatt Macy uint64_t zapobj;
3735eda14cbcSMatt Macy
3736eda14cbcSMatt Macy if (vd->vdev_top_zap != 0)
3737eda14cbcSMatt Macy zapobj = vd->vdev_top_zap;
3738eda14cbcSMatt Macy else
3739eda14cbcSMatt Macy zapobj = vd->vdev_leaf_zap;
3740eda14cbcSMatt Macy
3741eda14cbcSMatt Macy error = vdev_prop_get_int(vd, VDEV_PROP_CHECKSUM_N,
3742eda14cbcSMatt Macy &vd->vdev_checksum_n);
3743eda14cbcSMatt Macy if (error && error != ENOENT)
3744eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: zap_lookup(zap=%llu) "
3745eda14cbcSMatt Macy "failed [error=%d]", (u_longlong_t)zapobj, error);
3746eda14cbcSMatt Macy
3747eda14cbcSMatt Macy error = vdev_prop_get_int(vd, VDEV_PROP_CHECKSUM_T,
3748eda14cbcSMatt Macy &vd->vdev_checksum_t);
3749eda14cbcSMatt Macy if (error && error != ENOENT)
3750eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: zap_lookup(zap=%llu) "
3751eda14cbcSMatt Macy "failed [error=%d]", (u_longlong_t)zapobj, error);
3752eda14cbcSMatt Macy
3753eda14cbcSMatt Macy error = vdev_prop_get_int(vd, VDEV_PROP_IO_N,
3754eda14cbcSMatt Macy &vd->vdev_io_n);
3755eda14cbcSMatt Macy if (error && error != ENOENT)
3756eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: zap_lookup(zap=%llu) "
3757eda14cbcSMatt Macy "failed [error=%d]", (u_longlong_t)zapobj, error);
3758eda14cbcSMatt Macy
3759eda14cbcSMatt Macy error = vdev_prop_get_int(vd, VDEV_PROP_IO_T,
3760eda14cbcSMatt Macy &vd->vdev_io_t);
3761eda14cbcSMatt Macy if (error && error != ENOENT)
3762eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: zap_lookup(zap=%llu) "
3763eda14cbcSMatt Macy "failed [error=%d]", (u_longlong_t)zapobj, error);
3764eda14cbcSMatt Macy
3765eda14cbcSMatt Macy error = vdev_prop_get_int(vd, VDEV_PROP_SLOW_IO_N,
3766eda14cbcSMatt Macy &vd->vdev_slow_io_n);
3767eda14cbcSMatt Macy if (error && error != ENOENT)
3768eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: zap_lookup(zap=%llu) "
3769eda14cbcSMatt Macy "failed [error=%d]", (u_longlong_t)zapobj, error);
3770eda14cbcSMatt Macy
3771eda14cbcSMatt Macy error = vdev_prop_get_int(vd, VDEV_PROP_SLOW_IO_T,
3772eda14cbcSMatt Macy &vd->vdev_slow_io_t);
3773eda14cbcSMatt Macy if (error && error != ENOENT)
3774eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: zap_lookup(zap=%llu) "
3775eda14cbcSMatt Macy "failed [error=%d]", (u_longlong_t)zapobj, error);
3776eda14cbcSMatt Macy }
3777eda14cbcSMatt Macy
3778eda14cbcSMatt Macy /*
3779eda14cbcSMatt Macy * If this is a top-level vdev, initialize its metaslabs.
3780eda14cbcSMatt Macy */
3781eda14cbcSMatt Macy if (vd == vd->vdev_top && vdev_is_concrete(vd)) {
3782eda14cbcSMatt Macy vdev_metaslab_group_create(vd);
3783eda14cbcSMatt Macy
3784eda14cbcSMatt Macy if (vd->vdev_ashift == 0 || vd->vdev_asize == 0) {
3785eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
3786eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
3787eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: invalid size. ashift=%llu, "
3788eda14cbcSMatt Macy "asize=%llu", (u_longlong_t)vd->vdev_ashift,
3789eda14cbcSMatt Macy (u_longlong_t)vd->vdev_asize);
3790eda14cbcSMatt Macy return (SET_ERROR(ENXIO));
3791eda14cbcSMatt Macy }
3792eda14cbcSMatt Macy
3793eda14cbcSMatt Macy error = vdev_metaslab_init(vd, 0);
3794eda14cbcSMatt Macy if (error != 0) {
3795eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: metaslab_init failed "
3796eda14cbcSMatt Macy "[error=%d]", error);
3797eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
3798eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
3799eda14cbcSMatt Macy return (error);
3800eda14cbcSMatt Macy }
3801eda14cbcSMatt Macy
3802eda14cbcSMatt Macy uint64_t checkpoint_sm_obj;
3803eda14cbcSMatt Macy error = vdev_checkpoint_sm_object(vd, &checkpoint_sm_obj);
3804eda14cbcSMatt Macy if (error == 0 && checkpoint_sm_obj != 0) {
3805eda14cbcSMatt Macy objset_t *mos = spa_meta_objset(vd->vdev_spa);
3806eda14cbcSMatt Macy ASSERT(vd->vdev_asize != 0);
3807eda14cbcSMatt Macy ASSERT3P(vd->vdev_checkpoint_sm, ==, NULL);
3808eda14cbcSMatt Macy
3809eda14cbcSMatt Macy error = space_map_open(&vd->vdev_checkpoint_sm,
3810eda14cbcSMatt Macy mos, checkpoint_sm_obj, 0, vd->vdev_asize,
3811eda14cbcSMatt Macy vd->vdev_ashift);
3812eda14cbcSMatt Macy if (error != 0) {
3813eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: space_map_open "
3814eda14cbcSMatt Macy "failed for checkpoint spacemap (obj %llu) "
3815eda14cbcSMatt Macy "[error=%d]",
3816eda14cbcSMatt Macy (u_longlong_t)checkpoint_sm_obj, error);
3817eda14cbcSMatt Macy return (error);
3818eda14cbcSMatt Macy }
3819eda14cbcSMatt Macy ASSERT3P(vd->vdev_checkpoint_sm, !=, NULL);
3820eda14cbcSMatt Macy
3821eda14cbcSMatt Macy /*
3822eda14cbcSMatt Macy * Since the checkpoint_sm contains free entries
3823eda14cbcSMatt Macy * exclusively we can use space_map_allocated() to
3824eda14cbcSMatt Macy * indicate the cumulative checkpointed space that
3825eda14cbcSMatt Macy * has been freed.
3826eda14cbcSMatt Macy */
3827eda14cbcSMatt Macy vd->vdev_stat.vs_checkpoint_space =
38287877fdebSMatt Macy -space_map_allocated(vd->vdev_checkpoint_sm);
38297877fdebSMatt Macy vd->vdev_spa->spa_checkpoint_info.sci_dspace +=
38307877fdebSMatt Macy vd->vdev_stat.vs_checkpoint_space;
3831eda14cbcSMatt Macy } else if (error != 0) {
3832eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: failed to retrieve "
3833eda14cbcSMatt Macy "checkpoint space map object from vdev ZAP "
3834eda14cbcSMatt Macy "[error=%d]", error);
3835eda14cbcSMatt Macy return (error);
3836eda14cbcSMatt Macy }
3837eda14cbcSMatt Macy }
3838eda14cbcSMatt Macy
3839eda14cbcSMatt Macy /*
3840eda14cbcSMatt Macy * If this is a leaf vdev, load its DTL.
3841eda14cbcSMatt Macy */
3842eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf && (error = vdev_dtl_load(vd)) != 0) {
3843eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
3844eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
3845eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: vdev_dtl_load failed "
3846eda14cbcSMatt Macy "[error=%d]", error);
3847eda14cbcSMatt Macy return (error);
3848eda14cbcSMatt Macy }
3849eda14cbcSMatt Macy
3850eda14cbcSMatt Macy uint64_t obsolete_sm_object;
3851eda14cbcSMatt Macy error = vdev_obsolete_sm_object(vd, &obsolete_sm_object);
3852eda14cbcSMatt Macy if (error == 0 && obsolete_sm_object != 0) {
3853eda14cbcSMatt Macy objset_t *mos = vd->vdev_spa->spa_meta_objset;
3854eda14cbcSMatt Macy ASSERT(vd->vdev_asize != 0);
3855eda14cbcSMatt Macy ASSERT3P(vd->vdev_obsolete_sm, ==, NULL);
3856eda14cbcSMatt Macy
3857eda14cbcSMatt Macy if ((error = space_map_open(&vd->vdev_obsolete_sm, mos,
3858eda14cbcSMatt Macy obsolete_sm_object, 0, vd->vdev_asize, 0))) {
3859eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN,
3860eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
3861eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: space_map_open failed for "
3862eda14cbcSMatt Macy "obsolete spacemap (obj %llu) [error=%d]",
3863eda14cbcSMatt Macy (u_longlong_t)obsolete_sm_object, error);
3864eda14cbcSMatt Macy return (error);
3865eda14cbcSMatt Macy }
3866eda14cbcSMatt Macy } else if (error != 0) {
3867eda14cbcSMatt Macy vdev_dbgmsg(vd, "vdev_load: failed to retrieve obsolete "
3868eda14cbcSMatt Macy "space map object from vdev ZAP [error=%d]", error);
3869eda14cbcSMatt Macy return (error);
3870eda14cbcSMatt Macy }
3871eda14cbcSMatt Macy
3872eda14cbcSMatt Macy return (0);
3873eda14cbcSMatt Macy }
3874eda14cbcSMatt Macy
3875eda14cbcSMatt Macy /*
3876eda14cbcSMatt Macy * The special vdev case is used for hot spares and l2cache devices. Its
3877eda14cbcSMatt Macy * sole purpose it to set the vdev state for the associated vdev. To do this,
3878eda14cbcSMatt Macy * we make sure that we can open the underlying device, then try to read the
3879eda14cbcSMatt Macy * label, and make sure that the label is sane and that it hasn't been
3880eda14cbcSMatt Macy * repurposed to another pool.
3881eda14cbcSMatt Macy */
3882eda14cbcSMatt Macy int
vdev_validate_aux(vdev_t * vd)3883eda14cbcSMatt Macy vdev_validate_aux(vdev_t *vd)
3884eda14cbcSMatt Macy {
3885eda14cbcSMatt Macy nvlist_t *label;
3886eda14cbcSMatt Macy uint64_t guid, version;
3887eda14cbcSMatt Macy uint64_t state;
3888eda14cbcSMatt Macy
3889eda14cbcSMatt Macy if (!vdev_readable(vd))
3890eda14cbcSMatt Macy return (0);
3891eda14cbcSMatt Macy
3892eda14cbcSMatt Macy if ((label = vdev_label_read_config(vd, -1ULL)) == NULL) {
3893eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
3894eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
3895eda14cbcSMatt Macy return (-1);
3896eda14cbcSMatt Macy }
3897eda14cbcSMatt Macy
3898eda14cbcSMatt Macy if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_VERSION, &version) != 0 ||
3899eda14cbcSMatt Macy !SPA_VERSION_IS_SUPPORTED(version) ||
3900eda14cbcSMatt Macy nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0 ||
3901eda14cbcSMatt Macy guid != vd->vdev_guid ||
3902eda14cbcSMatt Macy nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, &state) != 0) {
3903eda14cbcSMatt Macy vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN,
3904eda14cbcSMatt Macy VDEV_AUX_CORRUPT_DATA);
3905eda14cbcSMatt Macy nvlist_free(label);
3906eda14cbcSMatt Macy return (-1);
3907eda14cbcSMatt Macy }
3908eda14cbcSMatt Macy
3909eda14cbcSMatt Macy /*
3910eda14cbcSMatt Macy * We don't actually check the pool state here. If it's in fact in
3911eda14cbcSMatt Macy * use by another pool, we update this fact on the fly when requested.
3912eda14cbcSMatt Macy */
3913eda14cbcSMatt Macy nvlist_free(label);
3914eda14cbcSMatt Macy return (0);
3915eda14cbcSMatt Macy }
3916eda14cbcSMatt Macy
3917eda14cbcSMatt Macy static void
vdev_destroy_ms_flush_data(vdev_t * vd,dmu_tx_t * tx)3918eda14cbcSMatt Macy vdev_destroy_ms_flush_data(vdev_t *vd, dmu_tx_t *tx)
3919eda14cbcSMatt Macy {
3920eda14cbcSMatt Macy objset_t *mos = spa_meta_objset(vd->vdev_spa);
3921eda14cbcSMatt Macy
3922eda14cbcSMatt Macy if (vd->vdev_top_zap == 0)
3923eda14cbcSMatt Macy return;
3924eda14cbcSMatt Macy
3925eda14cbcSMatt Macy uint64_t object = 0;
3926eda14cbcSMatt Macy int err = zap_lookup(mos, vd->vdev_top_zap,
3927eda14cbcSMatt Macy VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, sizeof (uint64_t), 1, &object);
3928eda14cbcSMatt Macy if (err == ENOENT)
3929eda14cbcSMatt Macy return;
3930eda14cbcSMatt Macy VERIFY0(err);
3931eda14cbcSMatt Macy
3932eda14cbcSMatt Macy VERIFY0(dmu_object_free(mos, object, tx));
3933eda14cbcSMatt Macy VERIFY0(zap_remove(mos, vd->vdev_top_zap,
3934eda14cbcSMatt Macy VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, tx));
3935eda14cbcSMatt Macy }
3936eda14cbcSMatt Macy
3937eda14cbcSMatt Macy /*
3938eda14cbcSMatt Macy * Free the objects used to store this vdev's spacemaps, and the array
3939eda14cbcSMatt Macy * that points to them.
3940eda14cbcSMatt Macy */
3941eda14cbcSMatt Macy void
vdev_destroy_spacemaps(vdev_t * vd,dmu_tx_t * tx)3942eda14cbcSMatt Macy vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx)
3943eda14cbcSMatt Macy {
3944eda14cbcSMatt Macy if (vd->vdev_ms_array == 0)
3945eda14cbcSMatt Macy return;
3946eda14cbcSMatt Macy
3947eda14cbcSMatt Macy objset_t *mos = vd->vdev_spa->spa_meta_objset;
3948eda14cbcSMatt Macy uint64_t array_count = vd->vdev_asize >> vd->vdev_ms_shift;
3949eda14cbcSMatt Macy size_t array_bytes = array_count * sizeof (uint64_t);
3950eda14cbcSMatt Macy uint64_t *smobj_array = kmem_alloc(array_bytes, KM_SLEEP);
3951eda14cbcSMatt Macy VERIFY0(dmu_read(mos, vd->vdev_ms_array, 0,
3952eda14cbcSMatt Macy array_bytes, smobj_array, 0));
3953eda14cbcSMatt Macy
3954eda14cbcSMatt Macy for (uint64_t i = 0; i < array_count; i++) {
3955eda14cbcSMatt Macy uint64_t smobj = smobj_array[i];
3956eda14cbcSMatt Macy if (smobj == 0)
3957eda14cbcSMatt Macy continue;
3958eda14cbcSMatt Macy
3959eda14cbcSMatt Macy space_map_free_obj(mos, smobj, tx);
3960eda14cbcSMatt Macy }
3961eda14cbcSMatt Macy
3962eda14cbcSMatt Macy kmem_free(smobj_array, array_bytes);
3963eda14cbcSMatt Macy VERIFY0(dmu_object_free(mos, vd->vdev_ms_array, tx));
3964eda14cbcSMatt Macy vdev_destroy_ms_flush_data(vd, tx);
3965eda14cbcSMatt Macy vd->vdev_ms_array = 0;
3966eda14cbcSMatt Macy }
3967eda14cbcSMatt Macy
3968eda14cbcSMatt Macy static void
vdev_remove_empty_log(vdev_t * vd,uint64_t txg)3969eda14cbcSMatt Macy vdev_remove_empty_log(vdev_t *vd, uint64_t txg)
3970eda14cbcSMatt Macy {
3971eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
3972eda14cbcSMatt Macy
3973eda14cbcSMatt Macy ASSERT(vd->vdev_islog);
3974eda14cbcSMatt Macy ASSERT(vd == vd->vdev_top);
3975eda14cbcSMatt Macy ASSERT3U(txg, ==, spa_syncing_txg(spa));
3976eda14cbcSMatt Macy
3977eda14cbcSMatt Macy dmu_tx_t *tx = dmu_tx_create_assigned(spa_get_dsl(spa), txg);
3978eda14cbcSMatt Macy
3979eda14cbcSMatt Macy vdev_destroy_spacemaps(vd, tx);
3980eda14cbcSMatt Macy if (vd->vdev_top_zap != 0) {
3981eda14cbcSMatt Macy vdev_destroy_unlink_zap(vd, vd->vdev_top_zap, tx);
3982eda14cbcSMatt Macy vd->vdev_top_zap = 0;
3983eda14cbcSMatt Macy }
3984eda14cbcSMatt Macy
3985eda14cbcSMatt Macy dmu_tx_commit(tx);
3986eda14cbcSMatt Macy }
3987eda14cbcSMatt Macy
3988eda14cbcSMatt Macy void
vdev_sync_done(vdev_t * vd,uint64_t txg)3989eda14cbcSMatt Macy vdev_sync_done(vdev_t *vd, uint64_t txg)
3990eda14cbcSMatt Macy {
3991eda14cbcSMatt Macy metaslab_t *msp;
3992eda14cbcSMatt Macy boolean_t reassess = !txg_list_empty(&vd->vdev_ms_list, TXG_CLEAN(txg));
3993eda14cbcSMatt Macy
3994eda14cbcSMatt Macy ASSERT(vdev_is_concrete(vd));
3995eda14cbcSMatt Macy
3996eda14cbcSMatt Macy while ((msp = txg_list_remove(&vd->vdev_ms_list, TXG_CLEAN(txg)))
3997eda14cbcSMatt Macy != NULL)
3998eda14cbcSMatt Macy metaslab_sync_done(msp, txg);
3999eda14cbcSMatt Macy
4000eda14cbcSMatt Macy if (reassess) {
4001eda14cbcSMatt Macy metaslab_sync_reassess(vd->vdev_mg);
4002eda14cbcSMatt Macy if (vd->vdev_log_mg != NULL)
4003eda14cbcSMatt Macy metaslab_sync_reassess(vd->vdev_log_mg);
4004eda14cbcSMatt Macy }
4005eda14cbcSMatt Macy }
4006eda14cbcSMatt Macy
4007eda14cbcSMatt Macy void
vdev_sync(vdev_t * vd,uint64_t txg)4008eda14cbcSMatt Macy vdev_sync(vdev_t *vd, uint64_t txg)
4009eda14cbcSMatt Macy {
4010eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
4011eda14cbcSMatt Macy vdev_t *lvd;
4012eda14cbcSMatt Macy metaslab_t *msp;
4013eda14cbcSMatt Macy
4014eda14cbcSMatt Macy ASSERT3U(txg, ==, spa->spa_syncing_txg);
4015eda14cbcSMatt Macy dmu_tx_t *tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg);
4016eda14cbcSMatt Macy if (range_tree_space(vd->vdev_obsolete_segments) > 0) {
4017eda14cbcSMatt Macy ASSERT(vd->vdev_removing ||
4018eda14cbcSMatt Macy vd->vdev_ops == &vdev_indirect_ops);
4019eda14cbcSMatt Macy
4020eda14cbcSMatt Macy vdev_indirect_sync_obsolete(vd, tx);
4021eda14cbcSMatt Macy
4022eda14cbcSMatt Macy /*
4023eda14cbcSMatt Macy * If the vdev is indirect, it can't have dirty
4024eda14cbcSMatt Macy * metaslabs or DTLs.
4025eda14cbcSMatt Macy */
4026eda14cbcSMatt Macy if (vd->vdev_ops == &vdev_indirect_ops) {
4027eda14cbcSMatt Macy ASSERT(txg_list_empty(&vd->vdev_ms_list, txg));
4028eda14cbcSMatt Macy ASSERT(txg_list_empty(&vd->vdev_dtl_list, txg));
4029eda14cbcSMatt Macy dmu_tx_commit(tx);
4030eda14cbcSMatt Macy return;
4031eda14cbcSMatt Macy }
4032eda14cbcSMatt Macy }
4033eda14cbcSMatt Macy
4034eda14cbcSMatt Macy ASSERT(vdev_is_concrete(vd));
4035eda14cbcSMatt Macy
4036eda14cbcSMatt Macy if (vd->vdev_ms_array == 0 && vd->vdev_ms_shift != 0 &&
4037eda14cbcSMatt Macy !vd->vdev_removing) {
4038eda14cbcSMatt Macy ASSERT(vd == vd->vdev_top);
4039eda14cbcSMatt Macy ASSERT0(vd->vdev_indirect_config.vic_mapping_object);
4040eda14cbcSMatt Macy vd->vdev_ms_array = dmu_object_alloc(spa->spa_meta_objset,
4041eda14cbcSMatt Macy DMU_OT_OBJECT_ARRAY, 0, DMU_OT_NONE, 0, tx);
4042eda14cbcSMatt Macy ASSERT(vd->vdev_ms_array != 0);
4043eda14cbcSMatt Macy vdev_config_dirty(vd);
4044eda14cbcSMatt Macy }
4045eda14cbcSMatt Macy
4046eda14cbcSMatt Macy while ((msp = txg_list_remove(&vd->vdev_ms_list, txg)) != NULL) {
4047eda14cbcSMatt Macy metaslab_sync(msp, txg);
4048eda14cbcSMatt Macy (void) txg_list_add(&vd->vdev_ms_list, msp, TXG_CLEAN(txg));
4049eda14cbcSMatt Macy }
4050eda14cbcSMatt Macy
4051eda14cbcSMatt Macy while ((lvd = txg_list_remove(&vd->vdev_dtl_list, txg)) != NULL)
4052eda14cbcSMatt Macy vdev_dtl_sync(lvd, txg);
4053eda14cbcSMatt Macy
4054eda14cbcSMatt Macy /*
4055eda14cbcSMatt Macy * If this is an empty log device being removed, destroy the
4056eda14cbcSMatt Macy * metadata associated with it.
4057eda14cbcSMatt Macy */
4058eda14cbcSMatt Macy if (vd->vdev_islog && vd->vdev_stat.vs_alloc == 0 && vd->vdev_removing)
4059eda14cbcSMatt Macy vdev_remove_empty_log(vd, txg);
4060eda14cbcSMatt Macy
4061eda14cbcSMatt Macy (void) txg_list_add(&spa->spa_vdev_txg_list, vd, TXG_CLEAN(txg));
4062eda14cbcSMatt Macy dmu_tx_commit(tx);
4063eda14cbcSMatt Macy }
4064eda14cbcSMatt Macy
4065eda14cbcSMatt Macy /*
4066eda14cbcSMatt Macy * Return the amount of space that should be (or was) allocated for the given
4067eda14cbcSMatt Macy * psize (compressed block size) in the given TXG. Note that for expanded
4068eda14cbcSMatt Macy * RAIDZ vdevs, the size allocated for older BP's may be larger. See
4069eda14cbcSMatt Macy * vdev_raidz_asize().
4070eda14cbcSMatt Macy */
4071eda14cbcSMatt Macy uint64_t
vdev_psize_to_asize_txg(vdev_t * vd,uint64_t psize,uint64_t txg)4072eda14cbcSMatt Macy vdev_psize_to_asize_txg(vdev_t *vd, uint64_t psize, uint64_t txg)
4073eda14cbcSMatt Macy {
4074eda14cbcSMatt Macy return (vd->vdev_ops->vdev_op_asize(vd, psize, txg));
40757877fdebSMatt Macy }
40767877fdebSMatt Macy
40777877fdebSMatt Macy uint64_t
vdev_psize_to_asize(vdev_t * vd,uint64_t psize)40787877fdebSMatt Macy vdev_psize_to_asize(vdev_t *vd, uint64_t psize)
40797877fdebSMatt Macy {
40807877fdebSMatt Macy return (vdev_psize_to_asize_txg(vd, psize, 0));
40817877fdebSMatt Macy }
4082eda14cbcSMatt Macy
4083eda14cbcSMatt Macy /*
4084eda14cbcSMatt Macy * Mark the given vdev faulted. A faulted vdev behaves as if the device could
4085eda14cbcSMatt Macy * not be opened, and no I/O is attempted.
4086eda14cbcSMatt Macy */
4087eda14cbcSMatt Macy int
vdev_fault(spa_t * spa,uint64_t guid,vdev_aux_t aux)4088eda14cbcSMatt Macy vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux)
4089eda14cbcSMatt Macy {
4090eda14cbcSMatt Macy vdev_t *vd, *tvd;
4091eda14cbcSMatt Macy
4092eda14cbcSMatt Macy spa_vdev_state_enter(spa, SCL_NONE);
4093eda14cbcSMatt Macy
4094eda14cbcSMatt Macy if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
4095eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
4096eda14cbcSMatt Macy
4097eda14cbcSMatt Macy if (!vd->vdev_ops->vdev_op_leaf)
4098eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP)));
4099eda14cbcSMatt Macy
4100eda14cbcSMatt Macy tvd = vd->vdev_top;
4101eda14cbcSMatt Macy
4102eda14cbcSMatt Macy /*
4103eda14cbcSMatt Macy * If user did a 'zpool offline -f' then make the fault persist across
4104eda14cbcSMatt Macy * reboots.
4105eda14cbcSMatt Macy */
4106eda14cbcSMatt Macy if (aux == VDEV_AUX_EXTERNAL_PERSIST) {
4107eda14cbcSMatt Macy /*
4108eda14cbcSMatt Macy * There are two kinds of forced faults: temporary and
4109eda14cbcSMatt Macy * persistent. Temporary faults go away at pool import, while
4110eda14cbcSMatt Macy * persistent faults stay set. Both types of faults can be
4111eda14cbcSMatt Macy * cleared with a zpool clear.
4112eda14cbcSMatt Macy *
4113eda14cbcSMatt Macy * We tell if a vdev is persistently faulted by looking at the
4114eda14cbcSMatt Macy * ZPOOL_CONFIG_AUX_STATE nvpair. If it's set to "external" at
4115eda14cbcSMatt Macy * import then it's a persistent fault. Otherwise, it's
4116eda14cbcSMatt Macy * temporary. We get ZPOOL_CONFIG_AUX_STATE set to "external"
4117eda14cbcSMatt Macy * by setting vd.vdev_stat.vs_aux to VDEV_AUX_EXTERNAL. This
4118eda14cbcSMatt Macy * tells vdev_config_generate() (which gets run later) to set
4119eda14cbcSMatt Macy * ZPOOL_CONFIG_AUX_STATE to "external" in the nvlist.
4120eda14cbcSMatt Macy */
4121eda14cbcSMatt Macy vd->vdev_stat.vs_aux = VDEV_AUX_EXTERNAL;
4122eda14cbcSMatt Macy vd->vdev_tmpoffline = B_FALSE;
4123eda14cbcSMatt Macy aux = VDEV_AUX_EXTERNAL;
4124eda14cbcSMatt Macy } else {
4125eda14cbcSMatt Macy vd->vdev_tmpoffline = B_TRUE;
4126eda14cbcSMatt Macy }
4127eda14cbcSMatt Macy
4128eda14cbcSMatt Macy /*
4129eda14cbcSMatt Macy * We don't directly use the aux state here, but if we do a
4130eda14cbcSMatt Macy * vdev_reopen(), we need this value to be present to remember why we
4131eda14cbcSMatt Macy * were faulted.
4132eda14cbcSMatt Macy */
4133eda14cbcSMatt Macy vd->vdev_label_aux = aux;
4134eda14cbcSMatt Macy
4135eda14cbcSMatt Macy /*
4136eda14cbcSMatt Macy * Faulted state takes precedence over degraded.
4137eda14cbcSMatt Macy */
4138eda14cbcSMatt Macy vd->vdev_delayed_close = B_FALSE;
4139eda14cbcSMatt Macy vd->vdev_faulted = 1ULL;
4140eda14cbcSMatt Macy vd->vdev_degraded = 0ULL;
4141eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_FAULTED, aux);
4142eda14cbcSMatt Macy
4143eda14cbcSMatt Macy /*
4144eda14cbcSMatt Macy * If this device has the only valid copy of the data, then
4145eda14cbcSMatt Macy * back off and simply mark the vdev as degraded instead.
4146eda14cbcSMatt Macy */
4147eda14cbcSMatt Macy if (!tvd->vdev_islog && vd->vdev_aux == NULL && vdev_dtl_required(vd)) {
4148eda14cbcSMatt Macy vd->vdev_degraded = 1ULL;
4149eda14cbcSMatt Macy vd->vdev_faulted = 0ULL;
4150eda14cbcSMatt Macy
4151eda14cbcSMatt Macy /*
4152eda14cbcSMatt Macy * If we reopen the device and it's not dead, only then do we
4153eda14cbcSMatt Macy * mark it degraded.
4154eda14cbcSMatt Macy */
4155eda14cbcSMatt Macy vdev_reopen(tvd);
4156eda14cbcSMatt Macy
4157eda14cbcSMatt Macy if (vdev_readable(vd))
4158eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, aux);
4159eda14cbcSMatt Macy }
4160eda14cbcSMatt Macy
4161eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, vd, 0));
4162eda14cbcSMatt Macy }
4163eda14cbcSMatt Macy
4164eda14cbcSMatt Macy /*
4165eda14cbcSMatt Macy * Mark the given vdev degraded. A degraded vdev is purely an indication to the
4166eda14cbcSMatt Macy * user that something is wrong. The vdev continues to operate as normal as far
4167eda14cbcSMatt Macy * as I/O is concerned.
4168eda14cbcSMatt Macy */
4169eda14cbcSMatt Macy int
vdev_degrade(spa_t * spa,uint64_t guid,vdev_aux_t aux)4170eda14cbcSMatt Macy vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux)
4171eda14cbcSMatt Macy {
4172eda14cbcSMatt Macy vdev_t *vd;
4173eda14cbcSMatt Macy
4174eda14cbcSMatt Macy spa_vdev_state_enter(spa, SCL_NONE);
4175eda14cbcSMatt Macy
4176eda14cbcSMatt Macy if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
4177eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
4178eda14cbcSMatt Macy
4179eda14cbcSMatt Macy if (!vd->vdev_ops->vdev_op_leaf)
4180eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP)));
4181eda14cbcSMatt Macy
4182eda14cbcSMatt Macy /*
4183eda14cbcSMatt Macy * If the vdev is already faulted, then don't do anything.
4184eda14cbcSMatt Macy */
4185eda14cbcSMatt Macy if (vd->vdev_faulted || vd->vdev_degraded)
4186eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, 0));
4187eda14cbcSMatt Macy
4188eda14cbcSMatt Macy vd->vdev_degraded = 1ULL;
4189eda14cbcSMatt Macy if (!vdev_is_dead(vd))
4190eda14cbcSMatt Macy vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED,
4191eda14cbcSMatt Macy aux);
4192eda14cbcSMatt Macy
4193eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, vd, 0));
4194eda14cbcSMatt Macy }
4195eda14cbcSMatt Macy
4196eda14cbcSMatt Macy int
vdev_remove_wanted(spa_t * spa,uint64_t guid)4197eda14cbcSMatt Macy vdev_remove_wanted(spa_t *spa, uint64_t guid)
4198eda14cbcSMatt Macy {
4199eda14cbcSMatt Macy vdev_t *vd;
4200eda14cbcSMatt Macy
4201eda14cbcSMatt Macy spa_vdev_state_enter(spa, SCL_NONE);
4202eda14cbcSMatt Macy
4203eda14cbcSMatt Macy if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
4204eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
4205eda14cbcSMatt Macy
4206eda14cbcSMatt Macy /*
4207eda14cbcSMatt Macy * If the vdev is already removed, or expanding which can trigger
4208eda14cbcSMatt Macy * repartition add/remove events, then don't do anything.
4209eda14cbcSMatt Macy */
4210eda14cbcSMatt Macy if (vd->vdev_removed || vd->vdev_expanding)
4211eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, 0));
4212eda14cbcSMatt Macy
4213eda14cbcSMatt Macy /*
4214eda14cbcSMatt Macy * Confirm the vdev has been removed, otherwise don't do anything.
4215eda14cbcSMatt Macy */
4216eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf && !zio_wait(vdev_probe(vd, NULL)))
4217eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, SET_ERROR(EEXIST)));
4218eda14cbcSMatt Macy
4219eda14cbcSMatt Macy vd->vdev_remove_wanted = B_TRUE;
4220eda14cbcSMatt Macy spa_async_request(spa, SPA_ASYNC_REMOVE);
4221eda14cbcSMatt Macy
4222eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, vd, 0));
4223eda14cbcSMatt Macy }
4224eda14cbcSMatt Macy
4225eda14cbcSMatt Macy
4226eda14cbcSMatt Macy /*
4227eda14cbcSMatt Macy * Online the given vdev.
4228eda14cbcSMatt Macy *
4229eda14cbcSMatt Macy * If 'ZFS_ONLINE_UNSPARE' is set, it implies two things. First, any attached
4230eda14cbcSMatt Macy * spare device should be detached when the device finishes resilvering.
4231eda14cbcSMatt Macy * Second, the online should be treated like a 'test' online case, so no FMA
4232eda14cbcSMatt Macy * events are generated if the device fails to open.
4233eda14cbcSMatt Macy */
4234eda14cbcSMatt Macy int
vdev_online(spa_t * spa,uint64_t guid,uint64_t flags,vdev_state_t * newstate)4235eda14cbcSMatt Macy vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, vdev_state_t *newstate)
4236eda14cbcSMatt Macy {
4237eda14cbcSMatt Macy vdev_t *vd, *tvd, *pvd, *rvd = spa->spa_root_vdev;
4238eda14cbcSMatt Macy boolean_t wasoffline;
4239eda14cbcSMatt Macy vdev_state_t oldstate;
4240eda14cbcSMatt Macy
4241eda14cbcSMatt Macy spa_vdev_state_enter(spa, SCL_NONE);
4242eda14cbcSMatt Macy
4243eda14cbcSMatt Macy if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
4244eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
4245eda14cbcSMatt Macy
4246eda14cbcSMatt Macy wasoffline = (vd->vdev_offline || vd->vdev_tmpoffline);
4247eda14cbcSMatt Macy oldstate = vd->vdev_state;
4248eda14cbcSMatt Macy
4249eda14cbcSMatt Macy tvd = vd->vdev_top;
4250eda14cbcSMatt Macy vd->vdev_offline = B_FALSE;
4251eda14cbcSMatt Macy vd->vdev_tmpoffline = B_FALSE;
4252eda14cbcSMatt Macy vd->vdev_checkremove = !!(flags & ZFS_ONLINE_CHECKREMOVE);
4253eda14cbcSMatt Macy vd->vdev_forcefault = !!(flags & ZFS_ONLINE_FORCEFAULT);
4254eda14cbcSMatt Macy
4255eda14cbcSMatt Macy /* XXX - L2ARC 1.0 does not support expansion */
4256eda14cbcSMatt Macy if (!vd->vdev_aux) {
4257eda14cbcSMatt Macy for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
4258eda14cbcSMatt Macy pvd->vdev_expanding = !!((flags & ZFS_ONLINE_EXPAND) ||
4259eda14cbcSMatt Macy spa->spa_autoexpand);
4260eda14cbcSMatt Macy vd->vdev_expansion_time = gethrestime_sec();
4261eda14cbcSMatt Macy }
4262eda14cbcSMatt Macy
4263eda14cbcSMatt Macy vdev_reopen(tvd);
4264eda14cbcSMatt Macy vd->vdev_checkremove = vd->vdev_forcefault = B_FALSE;
4265eda14cbcSMatt Macy
4266eda14cbcSMatt Macy if (!vd->vdev_aux) {
4267eda14cbcSMatt Macy for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
4268eda14cbcSMatt Macy pvd->vdev_expanding = B_FALSE;
4269eda14cbcSMatt Macy }
4270eda14cbcSMatt Macy
4271eda14cbcSMatt Macy if (newstate)
4272eda14cbcSMatt Macy *newstate = vd->vdev_state;
4273eda14cbcSMatt Macy if ((flags & ZFS_ONLINE_UNSPARE) &&
4274eda14cbcSMatt Macy !vdev_is_dead(vd) && vd->vdev_parent &&
4275eda14cbcSMatt Macy vd->vdev_parent->vdev_ops == &vdev_spare_ops &&
4276eda14cbcSMatt Macy vd->vdev_parent->vdev_child[0] == vd)
4277eda14cbcSMatt Macy vd->vdev_unspare = B_TRUE;
4278eda14cbcSMatt Macy
4279eda14cbcSMatt Macy if ((flags & ZFS_ONLINE_EXPAND) || spa->spa_autoexpand) {
4280eda14cbcSMatt Macy
4281eda14cbcSMatt Macy /* XXX - L2ARC 1.0 does not support expansion */
4282eda14cbcSMatt Macy if (vd->vdev_aux)
4283eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, vd, ENOTSUP));
4284eda14cbcSMatt Macy spa->spa_ccw_fail_time = 0;
4285eda14cbcSMatt Macy spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE);
4286eda14cbcSMatt Macy }
4287eda14cbcSMatt Macy
4288eda14cbcSMatt Macy /* Restart initializing if necessary */
4289eda14cbcSMatt Macy mutex_enter(&vd->vdev_initialize_lock);
4290eda14cbcSMatt Macy if (vdev_writeable(vd) &&
4291eda14cbcSMatt Macy vd->vdev_initialize_thread == NULL &&
4292eda14cbcSMatt Macy vd->vdev_initialize_state == VDEV_INITIALIZE_ACTIVE) {
4293eda14cbcSMatt Macy (void) vdev_initialize(vd);
4294eda14cbcSMatt Macy }
4295eda14cbcSMatt Macy mutex_exit(&vd->vdev_initialize_lock);
4296eda14cbcSMatt Macy
4297eda14cbcSMatt Macy /*
4298eda14cbcSMatt Macy * Restart trimming if necessary. We do not restart trimming for cache
4299eda14cbcSMatt Macy * devices here. This is triggered by l2arc_rebuild_vdev()
4300eda14cbcSMatt Macy * asynchronously for the whole device or in l2arc_evict() as it evicts
4301eda14cbcSMatt Macy * space for upcoming writes.
4302eda14cbcSMatt Macy */
4303eda14cbcSMatt Macy mutex_enter(&vd->vdev_trim_lock);
4304eda14cbcSMatt Macy if (vdev_writeable(vd) && !vd->vdev_isl2cache &&
4305eda14cbcSMatt Macy vd->vdev_trim_thread == NULL &&
4306eda14cbcSMatt Macy vd->vdev_trim_state == VDEV_TRIM_ACTIVE) {
4307eda14cbcSMatt Macy (void) vdev_trim(vd, vd->vdev_trim_rate, vd->vdev_trim_partial,
4308eda14cbcSMatt Macy vd->vdev_trim_secure);
4309eda14cbcSMatt Macy }
4310eda14cbcSMatt Macy mutex_exit(&vd->vdev_trim_lock);
4311eda14cbcSMatt Macy
4312eda14cbcSMatt Macy if (wasoffline ||
4313eda14cbcSMatt Macy (oldstate < VDEV_STATE_DEGRADED &&
4314eda14cbcSMatt Macy vd->vdev_state >= VDEV_STATE_DEGRADED)) {
4315eda14cbcSMatt Macy spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_ONLINE);
4316eda14cbcSMatt Macy
4317eda14cbcSMatt Macy /*
4318eda14cbcSMatt Macy * Asynchronously detach spare vdev if resilver or
4319eda14cbcSMatt Macy * rebuild is not required
4320eda14cbcSMatt Macy */
4321eda14cbcSMatt Macy if (vd->vdev_unspare &&
4322eda14cbcSMatt Macy !dsl_scan_resilvering(spa->spa_dsl_pool) &&
4323eda14cbcSMatt Macy !dsl_scan_resilver_scheduled(spa->spa_dsl_pool) &&
4324eda14cbcSMatt Macy !vdev_rebuild_active(tvd))
4325eda14cbcSMatt Macy spa_async_request(spa, SPA_ASYNC_DETACH_SPARE);
4326eda14cbcSMatt Macy }
4327eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, vd, 0));
4328eda14cbcSMatt Macy }
4329eda14cbcSMatt Macy
4330eda14cbcSMatt Macy static int
vdev_offline_locked(spa_t * spa,uint64_t guid,uint64_t flags)4331eda14cbcSMatt Macy vdev_offline_locked(spa_t *spa, uint64_t guid, uint64_t flags)
4332eda14cbcSMatt Macy {
4333eda14cbcSMatt Macy vdev_t *vd, *tvd;
4334eda14cbcSMatt Macy int error = 0;
4335eda14cbcSMatt Macy uint64_t generation;
4336eda14cbcSMatt Macy metaslab_group_t *mg;
4337eda14cbcSMatt Macy
4338eda14cbcSMatt Macy top:
4339eda14cbcSMatt Macy spa_vdev_state_enter(spa, SCL_ALLOC);
4340eda14cbcSMatt Macy
4341eda14cbcSMatt Macy if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL)
4342eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENODEV)));
4343eda14cbcSMatt Macy
4344eda14cbcSMatt Macy if (!vd->vdev_ops->vdev_op_leaf)
4345eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, SET_ERROR(ENOTSUP)));
4346eda14cbcSMatt Macy
4347eda14cbcSMatt Macy if (vd->vdev_ops == &vdev_draid_spare_ops)
4348eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL, ENOTSUP));
4349eda14cbcSMatt Macy
4350eda14cbcSMatt Macy tvd = vd->vdev_top;
4351eda14cbcSMatt Macy mg = tvd->vdev_mg;
4352eda14cbcSMatt Macy generation = spa->spa_config_generation + 1;
4353eda14cbcSMatt Macy
4354eda14cbcSMatt Macy /*
4355eda14cbcSMatt Macy * If the device isn't already offline, try to offline it.
4356eda14cbcSMatt Macy */
4357eda14cbcSMatt Macy if (!vd->vdev_offline) {
43587877fdebSMatt Macy /*
43597877fdebSMatt Macy * If this device has the only valid copy of some data,
43607877fdebSMatt Macy * don't allow it to be offlined. Log devices are always
4361eda14cbcSMatt Macy * expendable.
4362eda14cbcSMatt Macy */
4363eda14cbcSMatt Macy if (!tvd->vdev_islog && vd->vdev_aux == NULL &&
4364eda14cbcSMatt Macy vdev_dtl_required(vd))
4365eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL,
4366eda14cbcSMatt Macy SET_ERROR(EBUSY)));
4367eda14cbcSMatt Macy
43687877fdebSMatt Macy /*
43697877fdebSMatt Macy * If the top-level is a slog and it has had allocations
4370eda14cbcSMatt Macy * then proceed. We check that the vdev's metaslab group
43717877fdebSMatt Macy * is not NULL since it's possible that we may have just
4372eda14cbcSMatt Macy * added this vdev but not yet initialized its metaslabs.
4373eda14cbcSMatt Macy */
4374eda14cbcSMatt Macy if (tvd->vdev_islog && mg != NULL) {
4375eda14cbcSMatt Macy /*
4376eda14cbcSMatt Macy * Prevent any future allocations.
4377eda14cbcSMatt Macy */
4378eda14cbcSMatt Macy ASSERT3P(tvd->vdev_log_mg, ==, NULL);
4379eda14cbcSMatt Macy metaslab_group_passivate(mg);
4380eda14cbcSMatt Macy (void) spa_vdev_state_exit(spa, vd, 0);
4381eda14cbcSMatt Macy
4382eda14cbcSMatt Macy error = spa_reset_logs(spa);
4383eda14cbcSMatt Macy
4384eda14cbcSMatt Macy /*
4385eda14cbcSMatt Macy * If the log device was successfully reset but has
4386eda14cbcSMatt Macy * checkpointed data, do not offline it.
4387eda14cbcSMatt Macy */
4388eda14cbcSMatt Macy if (error == 0 &&
4389eda14cbcSMatt Macy tvd->vdev_checkpoint_sm != NULL) {
4390eda14cbcSMatt Macy ASSERT3U(space_map_allocated(
4391eda14cbcSMatt Macy tvd->vdev_checkpoint_sm), !=, 0);
4392eda14cbcSMatt Macy error = ZFS_ERR_CHECKPOINT_EXISTS;
4393eda14cbcSMatt Macy }
4394eda14cbcSMatt Macy
4395eda14cbcSMatt Macy spa_vdev_state_enter(spa, SCL_ALLOC);
4396eda14cbcSMatt Macy
4397eda14cbcSMatt Macy /*
4398eda14cbcSMatt Macy * Check to see if the config has changed.
4399eda14cbcSMatt Macy */
4400eda14cbcSMatt Macy if (error || generation != spa->spa_config_generation) {
4401eda14cbcSMatt Macy metaslab_group_activate(mg);
4402eda14cbcSMatt Macy if (error)
4403eda14cbcSMatt Macy return (spa_vdev_state_exit(spa,
4404eda14cbcSMatt Macy vd, error));
4405eda14cbcSMatt Macy (void) spa_vdev_state_exit(spa, vd, 0);
4406eda14cbcSMatt Macy goto top;
4407eda14cbcSMatt Macy }
4408eda14cbcSMatt Macy ASSERT0(tvd->vdev_stat.vs_alloc);
4409eda14cbcSMatt Macy }
4410eda14cbcSMatt Macy
4411eda14cbcSMatt Macy /*
4412eda14cbcSMatt Macy * Offline this device and reopen its top-level vdev.
4413eda14cbcSMatt Macy * If the top-level vdev is a log device then just offline
4414eda14cbcSMatt Macy * it. Otherwise, if this action results in the top-level
4415eda14cbcSMatt Macy * vdev becoming unusable, undo it and fail the request.
4416eda14cbcSMatt Macy */
4417eda14cbcSMatt Macy vd->vdev_offline = B_TRUE;
4418eda14cbcSMatt Macy vdev_reopen(tvd);
4419eda14cbcSMatt Macy
4420eda14cbcSMatt Macy if (!tvd->vdev_islog && vd->vdev_aux == NULL &&
4421eda14cbcSMatt Macy vdev_is_dead(tvd)) {
4422eda14cbcSMatt Macy vd->vdev_offline = B_FALSE;
4423eda14cbcSMatt Macy vdev_reopen(tvd);
4424eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, NULL,
4425eda14cbcSMatt Macy SET_ERROR(EBUSY)));
4426eda14cbcSMatt Macy }
4427eda14cbcSMatt Macy
4428eda14cbcSMatt Macy /*
4429eda14cbcSMatt Macy * Add the device back into the metaslab rotor so that
4430eda14cbcSMatt Macy * once we online the device it's open for business.
4431eda14cbcSMatt Macy */
4432eda14cbcSMatt Macy if (tvd->vdev_islog && mg != NULL)
4433eda14cbcSMatt Macy metaslab_group_activate(mg);
4434eda14cbcSMatt Macy }
4435eda14cbcSMatt Macy
4436eda14cbcSMatt Macy vd->vdev_tmpoffline = !!(flags & ZFS_OFFLINE_TEMPORARY);
4437eda14cbcSMatt Macy
4438eda14cbcSMatt Macy return (spa_vdev_state_exit(spa, vd, 0));
4439eda14cbcSMatt Macy }
4440eda14cbcSMatt Macy
4441eda14cbcSMatt Macy int
vdev_offline(spa_t * spa,uint64_t guid,uint64_t flags)4442eda14cbcSMatt Macy vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags)
4443eda14cbcSMatt Macy {
4444eda14cbcSMatt Macy int error;
4445eda14cbcSMatt Macy
4446eda14cbcSMatt Macy mutex_enter(&spa->spa_vdev_top_lock);
4447eda14cbcSMatt Macy error = vdev_offline_locked(spa, guid, flags);
4448eda14cbcSMatt Macy mutex_exit(&spa->spa_vdev_top_lock);
4449eda14cbcSMatt Macy
4450eda14cbcSMatt Macy return (error);
4451eda14cbcSMatt Macy }
4452eda14cbcSMatt Macy
4453eda14cbcSMatt Macy /*
4454eda14cbcSMatt Macy * Clear the error counts associated with this vdev. Unlike vdev_online() and
4455eda14cbcSMatt Macy * vdev_offline(), we assume the spa config is locked. We also clear all
4456eda14cbcSMatt Macy * children. If 'vd' is NULL, then the user wants to clear all vdevs.
4457eda14cbcSMatt Macy */
4458eda14cbcSMatt Macy void
vdev_clear(spa_t * spa,vdev_t * vd)4459eda14cbcSMatt Macy vdev_clear(spa_t *spa, vdev_t *vd)
4460eda14cbcSMatt Macy {
4461eda14cbcSMatt Macy vdev_t *rvd = spa->spa_root_vdev;
4462eda14cbcSMatt Macy
4463eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL);
4464eda14cbcSMatt Macy
4465eda14cbcSMatt Macy if (vd == NULL)
4466eda14cbcSMatt Macy vd = rvd;
44677877fdebSMatt Macy
4468eda14cbcSMatt Macy vd->vdev_stat.vs_read_errors = 0;
4469eda14cbcSMatt Macy vd->vdev_stat.vs_write_errors = 0;
4470eda14cbcSMatt Macy vd->vdev_stat.vs_checksum_errors = 0;
4471eda14cbcSMatt Macy vd->vdev_stat.vs_slow_ios = 0;
4472eda14cbcSMatt Macy
4473eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
4474eda14cbcSMatt Macy vdev_clear(spa, vd->vdev_child[c]);
4475eda14cbcSMatt Macy
4476eda14cbcSMatt Macy /*
4477eda14cbcSMatt Macy * It makes no sense to "clear" an indirect or removed vdev.
4478eda14cbcSMatt Macy */
4479eda14cbcSMatt Macy if (!vdev_is_concrete(vd) || vd->vdev_removed)
4480eda14cbcSMatt Macy return;
4481eda14cbcSMatt Macy
4482eda14cbcSMatt Macy /*
4483eda14cbcSMatt Macy * If we're in the FAULTED state or have experienced failed I/O, then
4484eda14cbcSMatt Macy * clear the persistent state and attempt to reopen the device. We
4485eda14cbcSMatt Macy * also mark the vdev config dirty, so that the new faulted state is
4486eda14cbcSMatt Macy * written out to disk.
4487eda14cbcSMatt Macy */
4488eda14cbcSMatt Macy if (vd->vdev_faulted || vd->vdev_degraded ||
4489eda14cbcSMatt Macy !vdev_readable(vd) || !vdev_writeable(vd)) {
4490eda14cbcSMatt Macy /*
4491eda14cbcSMatt Macy * When reopening in response to a clear event, it may be due to
4492eda14cbcSMatt Macy * a fmadm repair request. In this case, if the device is
4493eda14cbcSMatt Macy * still broken, we want to still post the ereport again.
4494eda14cbcSMatt Macy */
4495eda14cbcSMatt Macy vd->vdev_forcefault = B_TRUE;
4496eda14cbcSMatt Macy
4497eda14cbcSMatt Macy vd->vdev_faulted = vd->vdev_degraded = 0ULL;
4498eda14cbcSMatt Macy vd->vdev_cant_read = B_FALSE;
4499eda14cbcSMatt Macy vd->vdev_cant_write = B_FALSE;
4500eda14cbcSMatt Macy vd->vdev_stat.vs_aux = 0;
4501eda14cbcSMatt Macy
4502eda14cbcSMatt Macy vdev_reopen(vd == rvd ? rvd : vd->vdev_top);
4503eda14cbcSMatt Macy
4504eda14cbcSMatt Macy vd->vdev_forcefault = B_FALSE;
4505eda14cbcSMatt Macy
4506eda14cbcSMatt Macy if (vd != rvd && vdev_writeable(vd->vdev_top))
4507eda14cbcSMatt Macy vdev_state_dirty(vd->vdev_top);
4508eda14cbcSMatt Macy
4509eda14cbcSMatt Macy /* If a resilver isn't required, check if vdevs can be culled */
4510eda14cbcSMatt Macy if (vd->vdev_aux == NULL && !vdev_is_dead(vd) &&
4511eda14cbcSMatt Macy !dsl_scan_resilvering(spa->spa_dsl_pool) &&
4512eda14cbcSMatt Macy !dsl_scan_resilver_scheduled(spa->spa_dsl_pool))
4513eda14cbcSMatt Macy spa_async_request(spa, SPA_ASYNC_RESILVER_DONE);
4514eda14cbcSMatt Macy
4515eda14cbcSMatt Macy spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_CLEAR);
4516eda14cbcSMatt Macy }
4517eda14cbcSMatt Macy
4518eda14cbcSMatt Macy /*
4519eda14cbcSMatt Macy * When clearing a FMA-diagnosed fault, we always want to
4520eda14cbcSMatt Macy * unspare the device, as we assume that the original spare was
4521eda14cbcSMatt Macy * done in response to the FMA fault.
4522eda14cbcSMatt Macy */
4523eda14cbcSMatt Macy if (!vdev_is_dead(vd) && vd->vdev_parent != NULL &&
4524eda14cbcSMatt Macy vd->vdev_parent->vdev_ops == &vdev_spare_ops &&
4525eda14cbcSMatt Macy vd->vdev_parent->vdev_child[0] == vd)
4526eda14cbcSMatt Macy vd->vdev_unspare = B_TRUE;
4527eda14cbcSMatt Macy
4528eda14cbcSMatt Macy /* Clear recent error events cache (i.e. duplicate events tracking) */
4529eda14cbcSMatt Macy zfs_ereport_clear(spa, vd);
4530eda14cbcSMatt Macy }
4531eda14cbcSMatt Macy
4532eda14cbcSMatt Macy boolean_t
vdev_is_dead(vdev_t * vd)4533eda14cbcSMatt Macy vdev_is_dead(vdev_t *vd)
4534eda14cbcSMatt Macy {
4535eda14cbcSMatt Macy /*
4536eda14cbcSMatt Macy * Holes and missing devices are always considered "dead".
4537eda14cbcSMatt Macy * This simplifies the code since we don't have to check for
4538eda14cbcSMatt Macy * these types of devices in the various code paths.
4539eda14cbcSMatt Macy * Instead we rely on the fact that we skip over dead devices
4540eda14cbcSMatt Macy * before issuing I/O to them.
4541eda14cbcSMatt Macy */
4542eda14cbcSMatt Macy return (vd->vdev_state < VDEV_STATE_DEGRADED ||
4543eda14cbcSMatt Macy vd->vdev_ops == &vdev_hole_ops ||
4544eda14cbcSMatt Macy vd->vdev_ops == &vdev_missing_ops);
4545eda14cbcSMatt Macy }
4546eda14cbcSMatt Macy
4547eda14cbcSMatt Macy boolean_t
vdev_readable(vdev_t * vd)4548eda14cbcSMatt Macy vdev_readable(vdev_t *vd)
4549eda14cbcSMatt Macy {
4550eda14cbcSMatt Macy return (!vdev_is_dead(vd) && !vd->vdev_cant_read);
4551eda14cbcSMatt Macy }
4552eda14cbcSMatt Macy
4553eda14cbcSMatt Macy boolean_t
vdev_writeable(vdev_t * vd)4554eda14cbcSMatt Macy vdev_writeable(vdev_t *vd)
4555eda14cbcSMatt Macy {
4556eda14cbcSMatt Macy return (!vdev_is_dead(vd) && !vd->vdev_cant_write &&
4557eda14cbcSMatt Macy vdev_is_concrete(vd));
4558eda14cbcSMatt Macy }
4559eda14cbcSMatt Macy
4560eda14cbcSMatt Macy boolean_t
vdev_allocatable(vdev_t * vd)4561eda14cbcSMatt Macy vdev_allocatable(vdev_t *vd)
4562eda14cbcSMatt Macy {
4563eda14cbcSMatt Macy uint64_t state = vd->vdev_state;
4564eda14cbcSMatt Macy
4565eda14cbcSMatt Macy /*
4566eda14cbcSMatt Macy * We currently allow allocations from vdevs which may be in the
4567eda14cbcSMatt Macy * process of reopening (i.e. VDEV_STATE_CLOSED). If the device
4568eda14cbcSMatt Macy * fails to reopen then we'll catch it later when we're holding
4569eda14cbcSMatt Macy * the proper locks. Note that we have to get the vdev state
4570eda14cbcSMatt Macy * in a local variable because although it changes atomically,
4571eda14cbcSMatt Macy * we're asking two separate questions about it.
4572eda14cbcSMatt Macy */
4573eda14cbcSMatt Macy return (!(state < VDEV_STATE_DEGRADED && state != VDEV_STATE_CLOSED) &&
4574eda14cbcSMatt Macy !vd->vdev_cant_write && vdev_is_concrete(vd) &&
4575eda14cbcSMatt Macy vd->vdev_mg->mg_initialized);
4576eda14cbcSMatt Macy }
4577eda14cbcSMatt Macy
4578eda14cbcSMatt Macy boolean_t
vdev_accessible(vdev_t * vd,zio_t * zio)4579eda14cbcSMatt Macy vdev_accessible(vdev_t *vd, zio_t *zio)
4580eda14cbcSMatt Macy {
4581eda14cbcSMatt Macy ASSERT(zio->io_vd == vd);
4582eda14cbcSMatt Macy
4583eda14cbcSMatt Macy if (vdev_is_dead(vd) || vd->vdev_remove_wanted)
4584eda14cbcSMatt Macy return (B_FALSE);
4585eda14cbcSMatt Macy
4586eda14cbcSMatt Macy if (zio->io_type == ZIO_TYPE_READ)
4587eda14cbcSMatt Macy return (!vd->vdev_cant_read);
4588eda14cbcSMatt Macy
4589eda14cbcSMatt Macy if (zio->io_type == ZIO_TYPE_WRITE)
4590eda14cbcSMatt Macy return (!vd->vdev_cant_write);
4591eda14cbcSMatt Macy
4592eda14cbcSMatt Macy return (B_TRUE);
4593eda14cbcSMatt Macy }
4594eda14cbcSMatt Macy
4595eda14cbcSMatt Macy static void
vdev_get_child_stat(vdev_t * cvd,vdev_stat_t * vs,vdev_stat_t * cvs)4596eda14cbcSMatt Macy vdev_get_child_stat(vdev_t *cvd, vdev_stat_t *vs, vdev_stat_t *cvs)
4597eda14cbcSMatt Macy {
4598eda14cbcSMatt Macy /*
4599eda14cbcSMatt Macy * Exclude the dRAID spare when aggregating to avoid double counting
4600eda14cbcSMatt Macy * the ops and bytes. These IOs are counted by the physical leaves.
4601eda14cbcSMatt Macy */
4602eda14cbcSMatt Macy if (cvd->vdev_ops == &vdev_draid_spare_ops)
4603eda14cbcSMatt Macy return;
4604eda14cbcSMatt Macy
4605eda14cbcSMatt Macy for (int t = 0; t < VS_ZIO_TYPES; t++) {
4606eda14cbcSMatt Macy vs->vs_ops[t] += cvs->vs_ops[t];
4607eda14cbcSMatt Macy vs->vs_bytes[t] += cvs->vs_bytes[t];
4608eda14cbcSMatt Macy }
4609eda14cbcSMatt Macy
4610eda14cbcSMatt Macy cvs->vs_scan_removing = cvd->vdev_removing;
4611eda14cbcSMatt Macy }
4612eda14cbcSMatt Macy
4613eda14cbcSMatt Macy /*
4614eda14cbcSMatt Macy * Get extended stats
4615eda14cbcSMatt Macy */
4616eda14cbcSMatt Macy static void
vdev_get_child_stat_ex(vdev_t * cvd,vdev_stat_ex_t * vsx,vdev_stat_ex_t * cvsx)4617eda14cbcSMatt Macy vdev_get_child_stat_ex(vdev_t *cvd, vdev_stat_ex_t *vsx, vdev_stat_ex_t *cvsx)
4618eda14cbcSMatt Macy {
4619eda14cbcSMatt Macy (void) cvd;
4620eda14cbcSMatt Macy
4621eda14cbcSMatt Macy int t, b;
4622eda14cbcSMatt Macy for (t = 0; t < ZIO_TYPES; t++) {
4623eda14cbcSMatt Macy for (b = 0; b < ARRAY_SIZE(vsx->vsx_disk_histo[0]); b++)
4624eda14cbcSMatt Macy vsx->vsx_disk_histo[t][b] += cvsx->vsx_disk_histo[t][b];
4625eda14cbcSMatt Macy
4626eda14cbcSMatt Macy for (b = 0; b < ARRAY_SIZE(vsx->vsx_total_histo[0]); b++) {
4627eda14cbcSMatt Macy vsx->vsx_total_histo[t][b] +=
4628eda14cbcSMatt Macy cvsx->vsx_total_histo[t][b];
4629eda14cbcSMatt Macy }
4630eda14cbcSMatt Macy }
4631eda14cbcSMatt Macy
4632eda14cbcSMatt Macy for (t = 0; t < ZIO_PRIORITY_NUM_QUEUEABLE; t++) {
4633eda14cbcSMatt Macy for (b = 0; b < ARRAY_SIZE(vsx->vsx_queue_histo[0]); b++) {
4634eda14cbcSMatt Macy vsx->vsx_queue_histo[t][b] +=
4635eda14cbcSMatt Macy cvsx->vsx_queue_histo[t][b];
4636eda14cbcSMatt Macy }
4637eda14cbcSMatt Macy vsx->vsx_active_queue[t] += cvsx->vsx_active_queue[t];
4638eda14cbcSMatt Macy vsx->vsx_pend_queue[t] += cvsx->vsx_pend_queue[t];
4639eda14cbcSMatt Macy
4640eda14cbcSMatt Macy for (b = 0; b < ARRAY_SIZE(vsx->vsx_ind_histo[0]); b++)
4641eda14cbcSMatt Macy vsx->vsx_ind_histo[t][b] += cvsx->vsx_ind_histo[t][b];
4642eda14cbcSMatt Macy
4643eda14cbcSMatt Macy for (b = 0; b < ARRAY_SIZE(vsx->vsx_agg_histo[0]); b++)
4644eda14cbcSMatt Macy vsx->vsx_agg_histo[t][b] += cvsx->vsx_agg_histo[t][b];
4645eda14cbcSMatt Macy }
4646eda14cbcSMatt Macy
4647eda14cbcSMatt Macy }
4648eda14cbcSMatt Macy
4649eda14cbcSMatt Macy boolean_t
vdev_is_spacemap_addressable(vdev_t * vd)4650eda14cbcSMatt Macy vdev_is_spacemap_addressable(vdev_t *vd)
4651eda14cbcSMatt Macy {
4652eda14cbcSMatt Macy if (spa_feature_is_active(vd->vdev_spa, SPA_FEATURE_SPACEMAP_V2))
4653eda14cbcSMatt Macy return (B_TRUE);
4654eda14cbcSMatt Macy
4655eda14cbcSMatt Macy /*
4656eda14cbcSMatt Macy * If double-word space map entries are not enabled we assume
4657eda14cbcSMatt Macy * 47 bits of the space map entry are dedicated to the entry's
4658eda14cbcSMatt Macy * offset (see SM_OFFSET_BITS in space_map.h). We then use that
4659eda14cbcSMatt Macy * to calculate the maximum address that can be described by a
4660eda14cbcSMatt Macy * space map entry for the given device.
4661eda14cbcSMatt Macy */
4662eda14cbcSMatt Macy uint64_t shift = vd->vdev_ashift + SM_OFFSET_BITS;
4663eda14cbcSMatt Macy
4664eda14cbcSMatt Macy if (shift >= 63) /* detect potential overflow */
4665eda14cbcSMatt Macy return (B_TRUE);
4666eda14cbcSMatt Macy
4667eda14cbcSMatt Macy return (vd->vdev_asize < (1ULL << shift));
4668eda14cbcSMatt Macy }
4669eda14cbcSMatt Macy
4670eda14cbcSMatt Macy /*
4671eda14cbcSMatt Macy * Get statistics for the given vdev.
4672eda14cbcSMatt Macy */
4673eda14cbcSMatt Macy static void
vdev_get_stats_ex_impl(vdev_t * vd,vdev_stat_t * vs,vdev_stat_ex_t * vsx)4674eda14cbcSMatt Macy vdev_get_stats_ex_impl(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx)
4675eda14cbcSMatt Macy {
4676eda14cbcSMatt Macy int t;
4677eda14cbcSMatt Macy /*
4678eda14cbcSMatt Macy * If we're getting stats on the root vdev, aggregate the I/O counts
4679eda14cbcSMatt Macy * over all top-level vdevs (i.e. the direct children of the root).
4680eda14cbcSMatt Macy */
4681eda14cbcSMatt Macy if (!vd->vdev_ops->vdev_op_leaf) {
4682eda14cbcSMatt Macy if (vs) {
4683eda14cbcSMatt Macy memset(vs->vs_ops, 0, sizeof (vs->vs_ops));
4684eda14cbcSMatt Macy memset(vs->vs_bytes, 0, sizeof (vs->vs_bytes));
4685eda14cbcSMatt Macy }
4686eda14cbcSMatt Macy if (vsx)
4687eda14cbcSMatt Macy memset(vsx, 0, sizeof (*vsx));
4688eda14cbcSMatt Macy
4689eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++) {
4690eda14cbcSMatt Macy vdev_t *cvd = vd->vdev_child[c];
4691eda14cbcSMatt Macy vdev_stat_t *cvs = &cvd->vdev_stat;
4692eda14cbcSMatt Macy vdev_stat_ex_t *cvsx = &cvd->vdev_stat_ex;
4693eda14cbcSMatt Macy
4694eda14cbcSMatt Macy vdev_get_stats_ex_impl(cvd, cvs, cvsx);
4695eda14cbcSMatt Macy if (vs)
4696eda14cbcSMatt Macy vdev_get_child_stat(cvd, vs, cvs);
4697eda14cbcSMatt Macy if (vsx)
4698eda14cbcSMatt Macy vdev_get_child_stat_ex(cvd, vsx, cvsx);
4699eda14cbcSMatt Macy }
4700eda14cbcSMatt Macy } else {
4701eda14cbcSMatt Macy /*
4702eda14cbcSMatt Macy * We're a leaf. Just copy our ZIO active queue stats in. The
4703eda14cbcSMatt Macy * other leaf stats are updated in vdev_stat_update().
4704eda14cbcSMatt Macy */
4705eda14cbcSMatt Macy if (!vsx)
4706eda14cbcSMatt Macy return;
4707eda14cbcSMatt Macy
4708eda14cbcSMatt Macy memcpy(vsx, &vd->vdev_stat_ex, sizeof (vd->vdev_stat_ex));
4709eda14cbcSMatt Macy
4710eda14cbcSMatt Macy for (t = 0; t < ZIO_PRIORITY_NUM_QUEUEABLE; t++) {
4711eda14cbcSMatt Macy vsx->vsx_active_queue[t] = vd->vdev_queue.vq_cactive[t];
4712eda14cbcSMatt Macy vsx->vsx_pend_queue[t] = vdev_queue_class_length(vd, t);
4713eda14cbcSMatt Macy }
4714eda14cbcSMatt Macy }
4715eda14cbcSMatt Macy }
4716eda14cbcSMatt Macy
4717eda14cbcSMatt Macy void
vdev_get_stats_ex(vdev_t * vd,vdev_stat_t * vs,vdev_stat_ex_t * vsx)4718eda14cbcSMatt Macy vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx)
4719eda14cbcSMatt Macy {
4720eda14cbcSMatt Macy vdev_t *tvd = vd->vdev_top;
4721eda14cbcSMatt Macy mutex_enter(&vd->vdev_stat_lock);
4722eda14cbcSMatt Macy if (vs) {
4723eda14cbcSMatt Macy memcpy(vs, &vd->vdev_stat, sizeof (*vs));
4724eda14cbcSMatt Macy vs->vs_timestamp = gethrtime() - vs->vs_timestamp;
4725eda14cbcSMatt Macy vs->vs_state = vd->vdev_state;
4726eda14cbcSMatt Macy vs->vs_rsize = vdev_get_min_asize(vd);
4727eda14cbcSMatt Macy
4728eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf) {
4729eda14cbcSMatt Macy vs->vs_pspace = vd->vdev_psize;
4730eda14cbcSMatt Macy vs->vs_rsize += VDEV_LABEL_START_SIZE +
4731eda14cbcSMatt Macy VDEV_LABEL_END_SIZE;
4732eda14cbcSMatt Macy /*
4733eda14cbcSMatt Macy * Report initializing progress. Since we don't
4734eda14cbcSMatt Macy * have the initializing locks held, this is only
4735eda14cbcSMatt Macy * an estimate (although a fairly accurate one).
4736eda14cbcSMatt Macy */
4737eda14cbcSMatt Macy vs->vs_initialize_bytes_done =
4738eda14cbcSMatt Macy vd->vdev_initialize_bytes_done;
4739eda14cbcSMatt Macy vs->vs_initialize_bytes_est =
4740eda14cbcSMatt Macy vd->vdev_initialize_bytes_est;
4741eda14cbcSMatt Macy vs->vs_initialize_state = vd->vdev_initialize_state;
4742eda14cbcSMatt Macy vs->vs_initialize_action_time =
4743eda14cbcSMatt Macy vd->vdev_initialize_action_time;
4744eda14cbcSMatt Macy
4745eda14cbcSMatt Macy /*
4746eda14cbcSMatt Macy * Report manual TRIM progress. Since we don't have
4747eda14cbcSMatt Macy * the manual TRIM locks held, this is only an
4748eda14cbcSMatt Macy * estimate (although fairly accurate one).
4749eda14cbcSMatt Macy */
4750eda14cbcSMatt Macy vs->vs_trim_notsup = !vd->vdev_has_trim;
4751eda14cbcSMatt Macy vs->vs_trim_bytes_done = vd->vdev_trim_bytes_done;
4752eda14cbcSMatt Macy vs->vs_trim_bytes_est = vd->vdev_trim_bytes_est;
4753eda14cbcSMatt Macy vs->vs_trim_state = vd->vdev_trim_state;
4754eda14cbcSMatt Macy vs->vs_trim_action_time = vd->vdev_trim_action_time;
4755eda14cbcSMatt Macy
4756eda14cbcSMatt Macy /* Set when there is a deferred resilver. */
4757eda14cbcSMatt Macy vs->vs_resilver_deferred = vd->vdev_resilver_deferred;
4758eda14cbcSMatt Macy }
4759eda14cbcSMatt Macy
4760eda14cbcSMatt Macy /*
4761eda14cbcSMatt Macy * Report expandable space on top-level, non-auxiliary devices
4762eda14cbcSMatt Macy * only. The expandable space is reported in terms of metaslab
4763eda14cbcSMatt Macy * sized units since that determines how much space the pool
4764eda14cbcSMatt Macy * can expand.
4765eda14cbcSMatt Macy */
4766eda14cbcSMatt Macy if (vd->vdev_aux == NULL && tvd != NULL) {
4767eda14cbcSMatt Macy vs->vs_esize = P2ALIGN(
4768eda14cbcSMatt Macy vd->vdev_max_asize - vd->vdev_asize,
4769eda14cbcSMatt Macy 1ULL << tvd->vdev_ms_shift);
4770eda14cbcSMatt Macy }
4771eda14cbcSMatt Macy
4772eda14cbcSMatt Macy vs->vs_configured_ashift = vd->vdev_top != NULL
4773eda14cbcSMatt Macy ? vd->vdev_top->vdev_ashift : vd->vdev_ashift;
4774eda14cbcSMatt Macy vs->vs_logical_ashift = vd->vdev_logical_ashift;
4775eda14cbcSMatt Macy if (vd->vdev_physical_ashift <= ASHIFT_MAX)
4776eda14cbcSMatt Macy vs->vs_physical_ashift = vd->vdev_physical_ashift;
4777eda14cbcSMatt Macy else
4778eda14cbcSMatt Macy vs->vs_physical_ashift = 0;
4779eda14cbcSMatt Macy
4780eda14cbcSMatt Macy /*
4781eda14cbcSMatt Macy * Report fragmentation and rebuild progress for top-level,
4782eda14cbcSMatt Macy * non-auxiliary, concrete devices.
4783eda14cbcSMatt Macy */
4784eda14cbcSMatt Macy if (vd->vdev_aux == NULL && vd == vd->vdev_top &&
4785eda14cbcSMatt Macy vdev_is_concrete(vd)) {
4786eda14cbcSMatt Macy /*
4787eda14cbcSMatt Macy * The vdev fragmentation rating doesn't take into
4788eda14cbcSMatt Macy * account the embedded slog metaslab (vdev_log_mg).
4789eda14cbcSMatt Macy * Since it's only one metaslab, it would have a tiny
4790eda14cbcSMatt Macy * impact on the overall fragmentation.
4791eda14cbcSMatt Macy */
4792eda14cbcSMatt Macy vs->vs_fragmentation = (vd->vdev_mg != NULL) ?
4793eda14cbcSMatt Macy vd->vdev_mg->mg_fragmentation : 0;
4794eda14cbcSMatt Macy }
4795eda14cbcSMatt Macy vs->vs_noalloc = MAX(vd->vdev_noalloc,
4796eda14cbcSMatt Macy tvd ? tvd->vdev_noalloc : 0);
4797eda14cbcSMatt Macy }
4798eda14cbcSMatt Macy
4799eda14cbcSMatt Macy vdev_get_stats_ex_impl(vd, vs, vsx);
4800eda14cbcSMatt Macy mutex_exit(&vd->vdev_stat_lock);
4801eda14cbcSMatt Macy }
4802eda14cbcSMatt Macy
4803eda14cbcSMatt Macy void
vdev_get_stats(vdev_t * vd,vdev_stat_t * vs)4804eda14cbcSMatt Macy vdev_get_stats(vdev_t *vd, vdev_stat_t *vs)
4805eda14cbcSMatt Macy {
4806eda14cbcSMatt Macy return (vdev_get_stats_ex(vd, vs, NULL));
4807eda14cbcSMatt Macy }
4808eda14cbcSMatt Macy
4809eda14cbcSMatt Macy void
vdev_clear_stats(vdev_t * vd)4810eda14cbcSMatt Macy vdev_clear_stats(vdev_t *vd)
4811eda14cbcSMatt Macy {
4812eda14cbcSMatt Macy mutex_enter(&vd->vdev_stat_lock);
4813eda14cbcSMatt Macy vd->vdev_stat.vs_space = 0;
4814eda14cbcSMatt Macy vd->vdev_stat.vs_dspace = 0;
4815eda14cbcSMatt Macy vd->vdev_stat.vs_alloc = 0;
4816eda14cbcSMatt Macy mutex_exit(&vd->vdev_stat_lock);
4817eda14cbcSMatt Macy }
4818eda14cbcSMatt Macy
4819eda14cbcSMatt Macy void
vdev_scan_stat_init(vdev_t * vd)4820eda14cbcSMatt Macy vdev_scan_stat_init(vdev_t *vd)
4821eda14cbcSMatt Macy {
4822eda14cbcSMatt Macy vdev_stat_t *vs = &vd->vdev_stat;
4823eda14cbcSMatt Macy
4824eda14cbcSMatt Macy for (int c = 0; c < vd->vdev_children; c++)
4825eda14cbcSMatt Macy vdev_scan_stat_init(vd->vdev_child[c]);
4826eda14cbcSMatt Macy
4827eda14cbcSMatt Macy mutex_enter(&vd->vdev_stat_lock);
4828eda14cbcSMatt Macy vs->vs_scan_processed = 0;
4829eda14cbcSMatt Macy mutex_exit(&vd->vdev_stat_lock);
4830eda14cbcSMatt Macy }
4831eda14cbcSMatt Macy
4832eda14cbcSMatt Macy void
vdev_stat_update(zio_t * zio,uint64_t psize)4833eda14cbcSMatt Macy vdev_stat_update(zio_t *zio, uint64_t psize)
4834eda14cbcSMatt Macy {
4835eda14cbcSMatt Macy spa_t *spa = zio->io_spa;
4836eda14cbcSMatt Macy vdev_t *rvd = spa->spa_root_vdev;
4837eda14cbcSMatt Macy vdev_t *vd = zio->io_vd ? zio->io_vd : rvd;
4838eda14cbcSMatt Macy vdev_t *pvd;
4839eda14cbcSMatt Macy uint64_t txg = zio->io_txg;
4840eda14cbcSMatt Macy /* Suppress ASAN false positive */
4841eda14cbcSMatt Macy #ifdef __SANITIZE_ADDRESS__
4842eda14cbcSMatt Macy vdev_stat_t *vs = vd ? &vd->vdev_stat : NULL;
4843eda14cbcSMatt Macy vdev_stat_ex_t *vsx = vd ? &vd->vdev_stat_ex : NULL;
4844eda14cbcSMatt Macy #else
4845eda14cbcSMatt Macy vdev_stat_t *vs = &vd->vdev_stat;
4846eda14cbcSMatt Macy vdev_stat_ex_t *vsx = &vd->vdev_stat_ex;
4847eda14cbcSMatt Macy #endif
4848eda14cbcSMatt Macy zio_type_t type = zio->io_type;
4849eda14cbcSMatt Macy int flags = zio->io_flags;
4850eda14cbcSMatt Macy
4851eda14cbcSMatt Macy /*
4852eda14cbcSMatt Macy * If this i/o is a gang leader, it didn't do any actual work.
4853eda14cbcSMatt Macy */
4854eda14cbcSMatt Macy if (zio->io_gang_tree)
4855eda14cbcSMatt Macy return;
4856eda14cbcSMatt Macy
4857eda14cbcSMatt Macy if (zio->io_error == 0) {
4858eda14cbcSMatt Macy /*
4859eda14cbcSMatt Macy * If this is a root i/o, don't count it -- we've already
4860eda14cbcSMatt Macy * counted the top-level vdevs, and vdev_get_stats() will
4861eda14cbcSMatt Macy * aggregate them when asked. This reduces contention on
4862eda14cbcSMatt Macy * the root vdev_stat_lock and implicitly handles blocks
4863eda14cbcSMatt Macy * that compress away to holes, for which there is no i/o.
4864eda14cbcSMatt Macy * (Holes never create vdev children, so all the counters
4865eda14cbcSMatt Macy * remain zero, which is what we want.)
4866eda14cbcSMatt Macy *
4867eda14cbcSMatt Macy * Note: this only applies to successful i/o (io_error == 0)
4868eda14cbcSMatt Macy * because unlike i/o counts, errors are not additive.
4869eda14cbcSMatt Macy * When reading a ditto block, for example, failure of
4870eda14cbcSMatt Macy * one top-level vdev does not imply a root-level error.
4871eda14cbcSMatt Macy */
4872eda14cbcSMatt Macy if (vd == rvd)
4873eda14cbcSMatt Macy return;
4874eda14cbcSMatt Macy
4875eda14cbcSMatt Macy ASSERT(vd == zio->io_vd);
4876eda14cbcSMatt Macy
4877eda14cbcSMatt Macy if (flags & ZIO_FLAG_IO_BYPASS)
4878eda14cbcSMatt Macy return;
4879eda14cbcSMatt Macy
4880eac7052fSMatt Macy mutex_enter(&vd->vdev_stat_lock);
48812c48331dSMatt Macy
4882eda14cbcSMatt Macy if (flags & ZIO_FLAG_IO_REPAIR) {
4883eda14cbcSMatt Macy /*
4884eda14cbcSMatt Macy * Repair is the result of a resilver issued by the
4885eda14cbcSMatt Macy * scan thread (spa_sync).
4886eda14cbcSMatt Macy */
4887eda14cbcSMatt Macy if (flags & ZIO_FLAG_SCAN_THREAD) {
4888eda14cbcSMatt Macy dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan;
4889eda14cbcSMatt Macy dsl_scan_phys_t *scn_phys = &scn->scn_phys;
4890eda14cbcSMatt Macy uint64_t *processed = &scn_phys->scn_processed;
4891eda14cbcSMatt Macy
4892eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf)
4893eda14cbcSMatt Macy atomic_add_64(processed, psize);
4894eda14cbcSMatt Macy vs->vs_scan_processed += psize;
4895eda14cbcSMatt Macy }
4896eda14cbcSMatt Macy
4897eda14cbcSMatt Macy /*
4898eda14cbcSMatt Macy * Repair is the result of a rebuild issued by the
4899eda14cbcSMatt Macy * rebuild thread (vdev_rebuild_thread). To avoid
4900eda14cbcSMatt Macy * double counting repaired bytes the virtual dRAID
4901eda14cbcSMatt Macy * spare vdev is excluded from the processed bytes.
4902eda14cbcSMatt Macy */
4903eda14cbcSMatt Macy if (zio->io_priority == ZIO_PRIORITY_REBUILD) {
4904eda14cbcSMatt Macy vdev_t *tvd = vd->vdev_top;
4905eda14cbcSMatt Macy vdev_rebuild_t *vr = &tvd->vdev_rebuild_config;
4906eda14cbcSMatt Macy vdev_rebuild_phys_t *vrp = &vr->vr_rebuild_phys;
4907eda14cbcSMatt Macy uint64_t *rebuilt = &vrp->vrp_bytes_rebuilt;
4908eda14cbcSMatt Macy
4909eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf &&
4910eda14cbcSMatt Macy vd->vdev_ops != &vdev_draid_spare_ops) {
4911eda14cbcSMatt Macy atomic_add_64(rebuilt, psize);
4912eda14cbcSMatt Macy }
4913eda14cbcSMatt Macy vs->vs_rebuild_processed += psize;
4914eda14cbcSMatt Macy }
4915eda14cbcSMatt Macy
4916eda14cbcSMatt Macy if (flags & ZIO_FLAG_SELF_HEAL)
4917eda14cbcSMatt Macy vs->vs_self_healed += psize;
4918eda14cbcSMatt Macy }
4919eda14cbcSMatt Macy
4920eda14cbcSMatt Macy /*
4921eda14cbcSMatt Macy * The bytes/ops/histograms are recorded at the leaf level and
4922eda14cbcSMatt Macy * aggregated into the higher level vdevs in vdev_get_stats().
4923eda14cbcSMatt Macy */
4924eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf &&
4925eda14cbcSMatt Macy (zio->io_priority < ZIO_PRIORITY_NUM_QUEUEABLE)) {
4926eda14cbcSMatt Macy zio_type_t vs_type = type;
4927eda14cbcSMatt Macy zio_priority_t priority = zio->io_priority;
4928eda14cbcSMatt Macy
4929eda14cbcSMatt Macy /*
4930eda14cbcSMatt Macy * TRIM ops and bytes are reported to user space as
4931eda14cbcSMatt Macy * ZIO_TYPE_FLUSH. This is done to preserve the
4932eda14cbcSMatt Macy * vdev_stat_t structure layout for user space.
4933eda14cbcSMatt Macy */
4934eda14cbcSMatt Macy if (type == ZIO_TYPE_TRIM)
4935eda14cbcSMatt Macy vs_type = ZIO_TYPE_FLUSH;
4936eda14cbcSMatt Macy
4937eda14cbcSMatt Macy /*
4938eda14cbcSMatt Macy * Solely for the purposes of 'zpool iostat -lqrw'
4939eda14cbcSMatt Macy * reporting use the priority to categorize the IO.
4940eda14cbcSMatt Macy * Only the following are reported to user space:
4941eda14cbcSMatt Macy *
4942eda14cbcSMatt Macy * ZIO_PRIORITY_SYNC_READ,
4943eda14cbcSMatt Macy * ZIO_PRIORITY_SYNC_WRITE,
4944eda14cbcSMatt Macy * ZIO_PRIORITY_ASYNC_READ,
4945eda14cbcSMatt Macy * ZIO_PRIORITY_ASYNC_WRITE,
4946eda14cbcSMatt Macy * ZIO_PRIORITY_SCRUB,
4947eda14cbcSMatt Macy * ZIO_PRIORITY_TRIM,
4948eda14cbcSMatt Macy * ZIO_PRIORITY_REBUILD.
4949eda14cbcSMatt Macy */
4950eda14cbcSMatt Macy if (priority == ZIO_PRIORITY_INITIALIZING) {
4951eda14cbcSMatt Macy ASSERT3U(type, ==, ZIO_TYPE_WRITE);
4952eda14cbcSMatt Macy priority = ZIO_PRIORITY_ASYNC_WRITE;
4953eda14cbcSMatt Macy } else if (priority == ZIO_PRIORITY_REMOVAL) {
4954eda14cbcSMatt Macy priority = ((type == ZIO_TYPE_WRITE) ?
4955eda14cbcSMatt Macy ZIO_PRIORITY_ASYNC_WRITE :
4956eda14cbcSMatt Macy ZIO_PRIORITY_ASYNC_READ);
4957eda14cbcSMatt Macy }
4958eda14cbcSMatt Macy
4959eda14cbcSMatt Macy vs->vs_ops[vs_type]++;
4960eda14cbcSMatt Macy vs->vs_bytes[vs_type] += psize;
4961eda14cbcSMatt Macy
4962eda14cbcSMatt Macy if (flags & ZIO_FLAG_DELEGATED) {
4963eda14cbcSMatt Macy vsx->vsx_agg_histo[priority]
4964eda14cbcSMatt Macy [RQ_HISTO(zio->io_size)]++;
4965eda14cbcSMatt Macy } else {
4966eda14cbcSMatt Macy vsx->vsx_ind_histo[priority]
4967eda14cbcSMatt Macy [RQ_HISTO(zio->io_size)]++;
4968eda14cbcSMatt Macy }
4969eda14cbcSMatt Macy
4970eda14cbcSMatt Macy if (zio->io_delta && zio->io_delay) {
4971eda14cbcSMatt Macy vsx->vsx_queue_histo[priority]
4972eda14cbcSMatt Macy [L_HISTO(zio->io_delta - zio->io_delay)]++;
4973eda14cbcSMatt Macy vsx->vsx_disk_histo[type]
4974eda14cbcSMatt Macy [L_HISTO(zio->io_delay)]++;
4975eda14cbcSMatt Macy vsx->vsx_total_histo[type]
4976eda14cbcSMatt Macy [L_HISTO(zio->io_delta)]++;
4977eda14cbcSMatt Macy }
4978eda14cbcSMatt Macy }
4979eda14cbcSMatt Macy
4980eda14cbcSMatt Macy mutex_exit(&vd->vdev_stat_lock);
4981eda14cbcSMatt Macy return;
4982eda14cbcSMatt Macy }
4983eda14cbcSMatt Macy
4984eda14cbcSMatt Macy if (flags & ZIO_FLAG_SPECULATIVE)
4985eda14cbcSMatt Macy return;
4986eda14cbcSMatt Macy
4987eda14cbcSMatt Macy /*
4988eda14cbcSMatt Macy * If this is an I/O error that is going to be retried, then ignore the
4989eda14cbcSMatt Macy * error. Otherwise, the user may interpret B_FAILFAST I/O errors as
4990eda14cbcSMatt Macy * hard errors, when in reality they can happen for any number of
4991eda14cbcSMatt Macy * innocuous reasons (bus resets, MPxIO link failure, etc).
4992eda14cbcSMatt Macy */
4993eda14cbcSMatt Macy if (zio->io_error == EIO &&
4994eda14cbcSMatt Macy !(zio->io_flags & ZIO_FLAG_IO_RETRY))
4995eda14cbcSMatt Macy return;
4996eda14cbcSMatt Macy
4997eda14cbcSMatt Macy /*
4998eda14cbcSMatt Macy * Intent logs writes won't propagate their error to the root
4999eda14cbcSMatt Macy * I/O so don't mark these types of failures as pool-level
5000eda14cbcSMatt Macy * errors.
5001eda14cbcSMatt Macy */
5002eda14cbcSMatt Macy if (zio->io_vd == NULL && (zio->io_flags & ZIO_FLAG_DONT_PROPAGATE))
5003eda14cbcSMatt Macy return;
5004eda14cbcSMatt Macy
5005eda14cbcSMatt Macy if (type == ZIO_TYPE_WRITE && txg != 0 &&
5006eda14cbcSMatt Macy (!(flags & ZIO_FLAG_IO_REPAIR) ||
5007eda14cbcSMatt Macy (flags & ZIO_FLAG_SCAN_THREAD) ||
5008eda14cbcSMatt Macy spa->spa_claiming)) {
5009eda14cbcSMatt Macy /*
5010eda14cbcSMatt Macy * This is either a normal write (not a repair), or it's
5011eda14cbcSMatt Macy * a repair induced by the scrub thread, or it's a repair
5012eda14cbcSMatt Macy * made by zil_claim() during spa_load() in the first txg.
5013eda14cbcSMatt Macy * In the normal case, we commit the DTL change in the same
5014eda14cbcSMatt Macy * txg as the block was born. In the scrub-induced repair
5015eda14cbcSMatt Macy * case, we know that scrubs run in first-pass syncing context,
5016eda14cbcSMatt Macy * so we commit the DTL change in spa_syncing_txg(spa).
5017eda14cbcSMatt Macy * In the zil_claim() case, we commit in spa_first_txg(spa).
5018eda14cbcSMatt Macy *
5019eda14cbcSMatt Macy * We currently do not make DTL entries for failed spontaneous
5020eda14cbcSMatt Macy * self-healing writes triggered by normal (non-scrubbing)
5021eda14cbcSMatt Macy * reads, because we have no transactional context in which to
5022eda14cbcSMatt Macy * do so -- and it's not clear that it'd be desirable anyway.
5023eda14cbcSMatt Macy */
5024eda14cbcSMatt Macy if (vd->vdev_ops->vdev_op_leaf) {
5025eda14cbcSMatt Macy uint64_t commit_txg = txg;
5026eda14cbcSMatt Macy if (flags & ZIO_FLAG_SCAN_THREAD) {
5027eda14cbcSMatt Macy ASSERT(flags & ZIO_FLAG_IO_REPAIR);
5028eda14cbcSMatt Macy ASSERT(spa_sync_pass(spa) == 1);
5029eda14cbcSMatt Macy vdev_dtl_dirty(vd, DTL_SCRUB, txg, 1);
5030eda14cbcSMatt Macy commit_txg = spa_syncing_txg(spa);
5031eda14cbcSMatt Macy } else if (spa->spa_claiming) {
5032eda14cbcSMatt Macy ASSERT(flags & ZIO_FLAG_IO_REPAIR);
5033eda14cbcSMatt Macy commit_txg = spa_first_txg(spa);
5034eda14cbcSMatt Macy }
5035eda14cbcSMatt Macy ASSERT(commit_txg >= spa_syncing_txg(spa));
5036eda14cbcSMatt Macy if (vdev_dtl_contains(vd, DTL_MISSING, txg, 1))
5037eda14cbcSMatt Macy return;
5038eda14cbcSMatt Macy for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
5039eda14cbcSMatt Macy vdev_dtl_dirty(pvd, DTL_PARTIAL, txg, 1);
5040eda14cbcSMatt Macy vdev_dirty(vd->vdev_top, VDD_DTL, vd, commit_txg);
5041eda14cbcSMatt Macy }
5042eda14cbcSMatt Macy if (vd != rvd)
5043eda14cbcSMatt Macy vdev_dtl_dirty(vd, DTL_MISSING, txg, 1);
5044eda14cbcSMatt Macy }
5045eda14cbcSMatt Macy }
5046eda14cbcSMatt Macy
5047eda14cbcSMatt Macy int64_t
vdev_deflated_space(vdev_t * vd,int64_t space)5048eda14cbcSMatt Macy vdev_deflated_space(vdev_t *vd, int64_t space)
5049eda14cbcSMatt Macy {
5050eda14cbcSMatt Macy ASSERT((space & (SPA_MINBLOCKSIZE-1)) == 0);
5051eda14cbcSMatt Macy ASSERT(vd->vdev_deflate_ratio != 0 || vd->vdev_isl2cache);
5052eda14cbcSMatt Macy
5053eda14cbcSMatt Macy return ((space >> SPA_MINBLOCKSHIFT) * vd->vdev_deflate_ratio);
5054eda14cbcSMatt Macy }
5055eda14cbcSMatt Macy
5056eda14cbcSMatt Macy /*
5057eda14cbcSMatt Macy * Update the in-core space usage stats for this vdev, its metaslab class,
5058eda14cbcSMatt Macy * and the root vdev.
5059eda14cbcSMatt Macy */
5060eda14cbcSMatt Macy void
vdev_space_update(vdev_t * vd,int64_t alloc_delta,int64_t defer_delta,int64_t space_delta)5061eda14cbcSMatt Macy vdev_space_update(vdev_t *vd, int64_t alloc_delta, int64_t defer_delta,
5062eda14cbcSMatt Macy int64_t space_delta)
5063eda14cbcSMatt Macy {
5064eda14cbcSMatt Macy (void) defer_delta;
5065eda14cbcSMatt Macy int64_t dspace_delta;
5066eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
5067eda14cbcSMatt Macy vdev_t *rvd = spa->spa_root_vdev;
5068eda14cbcSMatt Macy
5069eda14cbcSMatt Macy ASSERT(vd == vd->vdev_top);
5070eda14cbcSMatt Macy
5071eda14cbcSMatt Macy /*
5072eda14cbcSMatt Macy * Apply the inverse of the psize-to-asize (ie. RAID-Z) space-expansion
5073eda14cbcSMatt Macy * factor. We must calculate this here and not at the root vdev
5074eda14cbcSMatt Macy * because the root vdev's psize-to-asize is simply the max of its
5075eda14cbcSMatt Macy * children's, thus not accurate enough for us.
5076eda14cbcSMatt Macy */
5077eda14cbcSMatt Macy dspace_delta = vdev_deflated_space(vd, space_delta);
5078eda14cbcSMatt Macy
5079eda14cbcSMatt Macy mutex_enter(&vd->vdev_stat_lock);
5080eda14cbcSMatt Macy /* ensure we won't underflow */
5081eda14cbcSMatt Macy if (alloc_delta < 0) {
5082eda14cbcSMatt Macy ASSERT3U(vd->vdev_stat.vs_alloc, >=, -alloc_delta);
5083eda14cbcSMatt Macy }
5084eda14cbcSMatt Macy
5085eda14cbcSMatt Macy vd->vdev_stat.vs_alloc += alloc_delta;
5086eda14cbcSMatt Macy vd->vdev_stat.vs_space += space_delta;
5087eda14cbcSMatt Macy vd->vdev_stat.vs_dspace += dspace_delta;
5088eda14cbcSMatt Macy mutex_exit(&vd->vdev_stat_lock);
5089eda14cbcSMatt Macy
5090eda14cbcSMatt Macy /* every class but log contributes to root space stats */
5091eda14cbcSMatt Macy if (vd->vdev_mg != NULL && !vd->vdev_islog) {
5092eda14cbcSMatt Macy ASSERT(!vd->vdev_isl2cache);
5093eda14cbcSMatt Macy mutex_enter(&rvd->vdev_stat_lock);
50947877fdebSMatt Macy rvd->vdev_stat.vs_alloc += alloc_delta;
50957877fdebSMatt Macy rvd->vdev_stat.vs_space += space_delta;
50967877fdebSMatt Macy rvd->vdev_stat.vs_dspace += dspace_delta;
50977877fdebSMatt Macy mutex_exit(&rvd->vdev_stat_lock);
50987877fdebSMatt Macy }
50997877fdebSMatt Macy /* Note: metaslab_class_space_update moved to metaslab_space_update */
5100eda14cbcSMatt Macy }
51017877fdebSMatt Macy
51027877fdebSMatt Macy /*
51037877fdebSMatt Macy * Mark a top-level vdev's config as dirty, placing it on the dirty list
51047877fdebSMatt Macy * so that it will be written out next time the vdev configuration is synced.
51057877fdebSMatt Macy * If the root vdev is specified (vdev_top == NULL), dirty all top-level vdevs.
51067877fdebSMatt Macy */
5107eda14cbcSMatt Macy void
vdev_config_dirty(vdev_t * vd)5108eda14cbcSMatt Macy vdev_config_dirty(vdev_t *vd)
5109eda14cbcSMatt Macy {
51107877fdebSMatt Macy spa_t *spa = vd->vdev_spa;
5111eda14cbcSMatt Macy vdev_t *rvd = spa->spa_root_vdev;
5112eda14cbcSMatt Macy int c;
5113eda14cbcSMatt Macy
5114eda14cbcSMatt Macy ASSERT(spa_writeable(spa));
5115eda14cbcSMatt Macy
51167877fdebSMatt Macy /*
51177877fdebSMatt Macy * If this is an aux vdev (as with l2cache and spare devices), then we
5118eda14cbcSMatt Macy * update the vdev config manually and set the sync flag.
5119eda14cbcSMatt Macy */
51207877fdebSMatt Macy if (vd->vdev_aux != NULL) {
51217877fdebSMatt Macy spa_aux_vdev_t *sav = vd->vdev_aux;
51227877fdebSMatt Macy nvlist_t **aux;
5123eda14cbcSMatt Macy uint_t naux;
5124eda14cbcSMatt Macy
5125eda14cbcSMatt Macy for (c = 0; c < sav->sav_count; c++) {
51267877fdebSMatt Macy if (sav->sav_vdevs[c] == vd)
51277877fdebSMatt Macy break;
51287877fdebSMatt Macy }
51297877fdebSMatt Macy
5130eda14cbcSMatt Macy if (c == sav->sav_count) {
5131eda14cbcSMatt Macy /*
5132eda14cbcSMatt Macy * We're being removed. There's nothing more to do.
5133eda14cbcSMatt Macy */
5134eda14cbcSMatt Macy ASSERT(sav->sav_sync == B_TRUE);
5135eda14cbcSMatt Macy return;
5136eda14cbcSMatt Macy }
5137eda14cbcSMatt Macy
5138eda14cbcSMatt Macy sav->sav_sync = B_TRUE;
51397877fdebSMatt Macy
51407877fdebSMatt Macy if (nvlist_lookup_nvlist_array(sav->sav_config,
5141eda14cbcSMatt Macy ZPOOL_CONFIG_L2CACHE, &aux, &naux) != 0) {
5142eda14cbcSMatt Macy VERIFY(nvlist_lookup_nvlist_array(sav->sav_config,
51437877fdebSMatt Macy ZPOOL_CONFIG_SPARES, &aux, &naux) == 0);
5144eda14cbcSMatt Macy }
5145eda14cbcSMatt Macy
5146eda14cbcSMatt Macy ASSERT(c < naux);
5147eda14cbcSMatt Macy
5148eda14cbcSMatt Macy /*
51497877fdebSMatt Macy * Setting the nvlist in the middle if the array is a little
51507877fdebSMatt Macy * sketchy, but it will work.
51517877fdebSMatt Macy */
51527877fdebSMatt Macy nvlist_free(aux[c]);
51537877fdebSMatt Macy aux[c] = vdev_config_generate(spa, vd, B_TRUE, 0);
51547877fdebSMatt Macy
51557877fdebSMatt Macy return;
51567877fdebSMatt Macy }
51577877fdebSMatt Macy
51587877fdebSMatt Macy /*
51597877fdebSMatt Macy * The dirty list is protected by the SCL_CONFIG lock. The caller
51607877fdebSMatt Macy * must either hold SCL_CONFIG as writer, or must be the sync thread
51617877fdebSMatt Macy * (which holds SCL_CONFIG as reader). There's only one sync thread,
51627877fdebSMatt Macy * so this is sufficient to ensure mutual exclusion.
51637877fdebSMatt Macy */
51647877fdebSMatt Macy ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) ||
51657877fdebSMatt Macy (dsl_pool_sync_context(spa_get_dsl(spa)) &&
51667877fdebSMatt Macy spa_config_held(spa, SCL_CONFIG, RW_READER)));
51677877fdebSMatt Macy
51687877fdebSMatt Macy if (vd == rvd) {
51697877fdebSMatt Macy for (c = 0; c < rvd->vdev_children; c++)
51707877fdebSMatt Macy vdev_config_dirty(rvd->vdev_child[c]);
51717877fdebSMatt Macy } else {
51727877fdebSMatt Macy ASSERT(vd == vd->vdev_top);
5173eda14cbcSMatt Macy
5174eda14cbcSMatt Macy if (!list_link_active(&vd->vdev_config_dirty_node) &&
5175eda14cbcSMatt Macy vdev_is_concrete(vd)) {
5176eda14cbcSMatt Macy list_insert_head(&spa->spa_config_dirty_list, vd);
5177eda14cbcSMatt Macy }
5178eda14cbcSMatt Macy }
5179eda14cbcSMatt Macy }
5180eda14cbcSMatt Macy
5181eda14cbcSMatt Macy void
vdev_config_clean(vdev_t * vd)5182eda14cbcSMatt Macy vdev_config_clean(vdev_t *vd)
5183eda14cbcSMatt Macy {
5184eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
5185eda14cbcSMatt Macy
5186eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) ||
5187eda14cbcSMatt Macy (dsl_pool_sync_context(spa_get_dsl(spa)) &&
5188eda14cbcSMatt Macy spa_config_held(spa, SCL_CONFIG, RW_READER)));
5189eda14cbcSMatt Macy
5190eda14cbcSMatt Macy ASSERT(list_link_active(&vd->vdev_config_dirty_node));
5191eda14cbcSMatt Macy list_remove(&spa->spa_config_dirty_list, vd);
5192eda14cbcSMatt Macy }
5193eda14cbcSMatt Macy
5194eda14cbcSMatt Macy /*
5195eda14cbcSMatt Macy * Mark a top-level vdev's state as dirty, so that the next pass of
5196eda14cbcSMatt Macy * spa_sync() can convert this into vdev_config_dirty(). We distinguish
5197eda14cbcSMatt Macy * the state changes from larger config changes because they require
5198eda14cbcSMatt Macy * much less locking, and are often needed for administrative actions.
5199eda14cbcSMatt Macy */
5200eda14cbcSMatt Macy void
vdev_state_dirty(vdev_t * vd)5201eda14cbcSMatt Macy vdev_state_dirty(vdev_t *vd)
5202eda14cbcSMatt Macy {
5203eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
5204eda14cbcSMatt Macy
5205eda14cbcSMatt Macy ASSERT(spa_writeable(spa));
5206eda14cbcSMatt Macy ASSERT(vd == vd->vdev_top);
5207eda14cbcSMatt Macy
5208eda14cbcSMatt Macy /*
5209eda14cbcSMatt Macy * The state list is protected by the SCL_STATE lock. The caller
5210eda14cbcSMatt Macy * must either hold SCL_STATE as writer, or must be the sync thread
5211eda14cbcSMatt Macy * (which holds SCL_STATE as reader). There's only one sync thread,
5212eda14cbcSMatt Macy * so this is sufficient to ensure mutual exclusion.
5213eda14cbcSMatt Macy */
5214eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) ||
5215eda14cbcSMatt Macy (dsl_pool_sync_context(spa_get_dsl(spa)) &&
5216eda14cbcSMatt Macy spa_config_held(spa, SCL_STATE, RW_READER)));
5217eda14cbcSMatt Macy
5218eda14cbcSMatt Macy if (!list_link_active(&vd->vdev_state_dirty_node) &&
5219eda14cbcSMatt Macy vdev_is_concrete(vd))
5220eda14cbcSMatt Macy list_insert_head(&spa->spa_state_dirty_list, vd);
5221eda14cbcSMatt Macy }
5222eda14cbcSMatt Macy
5223eda14cbcSMatt Macy void
vdev_state_clean(vdev_t * vd)5224eda14cbcSMatt Macy vdev_state_clean(vdev_t *vd)
5225eda14cbcSMatt Macy {
5226eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
5227eda14cbcSMatt Macy
5228eda14cbcSMatt Macy ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) ||
5229eda14cbcSMatt Macy (dsl_pool_sync_context(spa_get_dsl(spa)) &&
5230eda14cbcSMatt Macy spa_config_held(spa, SCL_STATE, RW_READER)));
5231eda14cbcSMatt Macy
5232eda14cbcSMatt Macy ASSERT(list_link_active(&vd->vdev_state_dirty_node));
5233eda14cbcSMatt Macy list_remove(&spa->spa_state_dirty_list, vd);
5234eda14cbcSMatt Macy }
5235eda14cbcSMatt Macy
5236eda14cbcSMatt Macy /*
5237eda14cbcSMatt Macy * Propagate vdev state up from children to parent.
5238eda14cbcSMatt Macy */
5239eda14cbcSMatt Macy void
vdev_propagate_state(vdev_t * vd)5240eda14cbcSMatt Macy vdev_propagate_state(vdev_t *vd)
5241eda14cbcSMatt Macy {
5242eda14cbcSMatt Macy spa_t *spa = vd->vdev_spa;
5243eda14cbcSMatt Macy vdev_t *rvd = spa->spa_root_vdev;
5244eda14cbcSMatt Macy int degraded = 0, faulted = 0;
5245eda14cbcSMatt Macy int corrupted = 0;
5246 vdev_t *child;
5247
5248 if (vd->vdev_children > 0) {
5249 for (int c = 0; c < vd->vdev_children; c++) {
5250 child = vd->vdev_child[c];
5251
5252 /*
5253 * Don't factor holes or indirect vdevs into the
5254 * decision.
5255 */
5256 if (!vdev_is_concrete(child))
5257 continue;
5258
5259 if (!vdev_readable(child) ||
5260 (!vdev_writeable(child) && spa_writeable(spa))) {
5261 /*
5262 * Root special: if there is a top-level log
5263 * device, treat the root vdev as if it were
5264 * degraded.
5265 */
5266 if (child->vdev_islog && vd == rvd)
5267 degraded++;
5268 else
5269 faulted++;
5270 } else if (child->vdev_state <= VDEV_STATE_DEGRADED) {
5271 degraded++;
5272 }
5273
5274 if (child->vdev_stat.vs_aux == VDEV_AUX_CORRUPT_DATA)
5275 corrupted++;
5276 }
5277
5278 vd->vdev_ops->vdev_op_state_change(vd, faulted, degraded);
5279
5280 /*
5281 * Root special: if there is a top-level vdev that cannot be
5282 * opened due to corrupted metadata, then propagate the root
5283 * vdev's aux state as 'corrupt' rather than 'insufficient
5284 * replicas'.
5285 */
5286 if (corrupted && vd == rvd &&
5287 rvd->vdev_state == VDEV_STATE_CANT_OPEN)
5288 vdev_set_state(rvd, B_FALSE, VDEV_STATE_CANT_OPEN,
5289 VDEV_AUX_CORRUPT_DATA);
5290 }
5291
5292 if (vd->vdev_parent)
5293 vdev_propagate_state(vd->vdev_parent);
5294 }
5295
5296 /*
5297 * Set a vdev's state. If this is during an open, we don't update the parent
5298 * state, because we're in the process of opening children depth-first.
5299 * Otherwise, we propagate the change to the parent.
5300 *
5301 * If this routine places a device in a faulted state, an appropriate ereport is
5302 * generated.
5303 */
5304 void
vdev_set_state(vdev_t * vd,boolean_t isopen,vdev_state_t state,vdev_aux_t aux)5305 vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, vdev_aux_t aux)
5306 {
5307 uint64_t save_state;
5308 spa_t *spa = vd->vdev_spa;
5309
5310 if (state == vd->vdev_state) {
5311 /*
5312 * Since vdev_offline() code path is already in an offline
5313 * state we can miss a statechange event to OFFLINE. Check
5314 * the previous state to catch this condition.
5315 */
5316 if (vd->vdev_ops->vdev_op_leaf &&
5317 (state == VDEV_STATE_OFFLINE) &&
5318 (vd->vdev_prevstate >= VDEV_STATE_FAULTED)) {
5319 /* post an offline state change */
5320 zfs_post_state_change(spa, vd, vd->vdev_prevstate);
5321 }
5322 vd->vdev_stat.vs_aux = aux;
5323 return;
5324 }
5325
5326 save_state = vd->vdev_state;
5327
5328 vd->vdev_state = state;
5329 vd->vdev_stat.vs_aux = aux;
5330
5331 /*
5332 * If we are setting the vdev state to anything but an open state, then
5333 * always close the underlying device unless the device has requested
5334 * a delayed close (i.e. we're about to remove or fault the device).
5335 * Otherwise, we keep accessible but invalid devices open forever.
5336 * We don't call vdev_close() itself, because that implies some extra
5337 * checks (offline, etc) that we don't want here. This is limited to
5338 * leaf devices, because otherwise closing the device will affect other
5339 * children.
5340 */
5341 if (!vd->vdev_delayed_close && vdev_is_dead(vd) &&
5342 vd->vdev_ops->vdev_op_leaf)
5343 vd->vdev_ops->vdev_op_close(vd);
5344
5345 if (vd->vdev_removed &&
5346 state == VDEV_STATE_CANT_OPEN &&
5347 (aux == VDEV_AUX_OPEN_FAILED || vd->vdev_checkremove)) {
5348 /*
5349 * If the previous state is set to VDEV_STATE_REMOVED, then this
5350 * device was previously marked removed and someone attempted to
5351 * reopen it. If this failed due to a nonexistent device, then
5352 * keep the device in the REMOVED state. We also let this be if
5353 * it is one of our special test online cases, which is only
5354 * attempting to online the device and shouldn't generate an FMA
5355 * fault.
5356 */
5357 vd->vdev_state = VDEV_STATE_REMOVED;
5358 vd->vdev_stat.vs_aux = VDEV_AUX_NONE;
5359 } else if (state == VDEV_STATE_REMOVED) {
5360 vd->vdev_removed = B_TRUE;
5361 } else if (state == VDEV_STATE_CANT_OPEN) {
5362 /*
5363 * If we fail to open a vdev during an import or recovery, we
5364 * mark it as "not available", which signifies that it was
5365 * never there to begin with. Failure to open such a device
5366 * is not considered an error.
5367 */
5368 if ((spa_load_state(spa) == SPA_LOAD_IMPORT ||
5369 spa_load_state(spa) == SPA_LOAD_RECOVER) &&
5370 vd->vdev_ops->vdev_op_leaf)
5371 vd->vdev_not_present = 1;
5372
5373 /*
5374 * Post the appropriate ereport. If the 'prevstate' field is
5375 * set to something other than VDEV_STATE_UNKNOWN, it indicates
5376 * that this is part of a vdev_reopen(). In this case, we don't
5377 * want to post the ereport if the device was already in the
5378 * CANT_OPEN state beforehand.
5379 *
5380 * If the 'checkremove' flag is set, then this is an attempt to
5381 * online the device in response to an insertion event. If we
5382 * hit this case, then we have detected an insertion event for a
5383 * faulted or offline device that wasn't in the removed state.
5384 * In this scenario, we don't post an ereport because we are
5385 * about to replace the device, or attempt an online with
5386 * vdev_forcefault, which will generate the fault for us.
5387 */
5388 if ((vd->vdev_prevstate != state || vd->vdev_forcefault) &&
5389 !vd->vdev_not_present && !vd->vdev_checkremove &&
5390 vd != spa->spa_root_vdev) {
5391 const char *class;
5392
5393 switch (aux) {
5394 case VDEV_AUX_OPEN_FAILED:
5395 class = FM_EREPORT_ZFS_DEVICE_OPEN_FAILED;
5396 break;
5397 case VDEV_AUX_CORRUPT_DATA:
5398 class = FM_EREPORT_ZFS_DEVICE_CORRUPT_DATA;
5399 break;
5400 case VDEV_AUX_NO_REPLICAS:
5401 class = FM_EREPORT_ZFS_DEVICE_NO_REPLICAS;
5402 break;
5403 case VDEV_AUX_BAD_GUID_SUM:
5404 class = FM_EREPORT_ZFS_DEVICE_BAD_GUID_SUM;
5405 break;
5406 case VDEV_AUX_TOO_SMALL:
5407 class = FM_EREPORT_ZFS_DEVICE_TOO_SMALL;
5408 break;
5409 case VDEV_AUX_BAD_LABEL:
5410 class = FM_EREPORT_ZFS_DEVICE_BAD_LABEL;
5411 break;
5412 case VDEV_AUX_BAD_ASHIFT:
5413 class = FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT;
5414 break;
5415 default:
5416 class = FM_EREPORT_ZFS_DEVICE_UNKNOWN;
5417 }
5418
5419 (void) zfs_ereport_post(class, spa, vd, NULL, NULL,
5420 save_state);
5421 }
5422
5423 /* Erase any notion of persistent removed state */
5424 vd->vdev_removed = B_FALSE;
5425 } else {
5426 vd->vdev_removed = B_FALSE;
5427 }
5428
5429 /*
5430 * Notify ZED of any significant state-change on a leaf vdev.
5431 *
5432 */
5433 if (vd->vdev_ops->vdev_op_leaf) {
5434 /* preserve original state from a vdev_reopen() */
5435 if ((vd->vdev_prevstate != VDEV_STATE_UNKNOWN) &&
5436 (vd->vdev_prevstate != vd->vdev_state) &&
5437 (save_state <= VDEV_STATE_CLOSED))
5438 save_state = vd->vdev_prevstate;
5439
5440 /* filter out state change due to initial vdev_open */
5441 if (save_state > VDEV_STATE_CLOSED)
5442 zfs_post_state_change(spa, vd, save_state);
5443 }
5444
5445 if (!isopen && vd->vdev_parent)
5446 vdev_propagate_state(vd->vdev_parent);
5447 }
5448
5449 boolean_t
vdev_children_are_offline(vdev_t * vd)5450 vdev_children_are_offline(vdev_t *vd)
5451 {
5452 ASSERT(!vd->vdev_ops->vdev_op_leaf);
5453
5454 for (uint64_t i = 0; i < vd->vdev_children; i++) {
5455 if (vd->vdev_child[i]->vdev_state != VDEV_STATE_OFFLINE)
5456 return (B_FALSE);
5457 }
5458
5459 return (B_TRUE);
5460 }
5461
5462 /*
5463 * Check the vdev configuration to ensure that it's capable of supporting
5464 * a root pool. We do not support partial configuration.
5465 */
5466 boolean_t
vdev_is_bootable(vdev_t * vd)5467 vdev_is_bootable(vdev_t *vd)
5468 {
5469 if (!vd->vdev_ops->vdev_op_leaf) {
5470 const char *vdev_type = vd->vdev_ops->vdev_op_type;
5471
5472 if (strcmp(vdev_type, VDEV_TYPE_MISSING) == 0)
5473 return (B_FALSE);
5474 }
5475
5476 for (int c = 0; c < vd->vdev_children; c++) {
5477 if (!vdev_is_bootable(vd->vdev_child[c]))
5478 return (B_FALSE);
5479 }
5480 return (B_TRUE);
5481 }
5482
5483 boolean_t
vdev_is_concrete(vdev_t * vd)5484 vdev_is_concrete(vdev_t *vd)
5485 {
5486 vdev_ops_t *ops = vd->vdev_ops;
5487 if (ops == &vdev_indirect_ops || ops == &vdev_hole_ops ||
5488 ops == &vdev_missing_ops || ops == &vdev_root_ops) {
5489 return (B_FALSE);
5490 } else {
5491 return (B_TRUE);
5492 }
5493 }
5494
5495 /*
5496 * Determine if a log device has valid content. If the vdev was
5497 * removed or faulted in the MOS config then we know that
5498 * the content on the log device has already been written to the pool.
5499 */
5500 boolean_t
vdev_log_state_valid(vdev_t * vd)5501 vdev_log_state_valid(vdev_t *vd)
5502 {
5503 if (vd->vdev_ops->vdev_op_leaf && !vd->vdev_faulted &&
5504 !vd->vdev_removed)
5505 return (B_TRUE);
5506
5507 for (int c = 0; c < vd->vdev_children; c++)
5508 if (vdev_log_state_valid(vd->vdev_child[c]))
5509 return (B_TRUE);
5510
5511 return (B_FALSE);
5512 }
5513
5514 /*
5515 * Expand a vdev if possible.
5516 */
5517 void
vdev_expand(vdev_t * vd,uint64_t txg)5518 vdev_expand(vdev_t *vd, uint64_t txg)
5519 {
5520 ASSERT(vd->vdev_top == vd);
5521 ASSERT(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
5522 ASSERT(vdev_is_concrete(vd));
5523
5524 vdev_set_deflate_ratio(vd);
5525
5526 if ((vd->vdev_spa->spa_raidz_expand == NULL ||
5527 vd->vdev_spa->spa_raidz_expand->vre_vdev_id != vd->vdev_id) &&
5528 (vd->vdev_asize >> vd->vdev_ms_shift) > vd->vdev_ms_count &&
5529 vdev_is_concrete(vd)) {
5530 vdev_metaslab_group_create(vd);
5531 VERIFY(vdev_metaslab_init(vd, txg) == 0);
5532 vdev_config_dirty(vd);
5533 }
5534 }
5535
5536 /*
5537 * Split a vdev.
5538 */
5539 void
vdev_split(vdev_t * vd)5540 vdev_split(vdev_t *vd)
5541 {
5542 vdev_t *cvd, *pvd = vd->vdev_parent;
5543
5544 VERIFY3U(pvd->vdev_children, >, 1);
5545
5546 vdev_remove_child(pvd, vd);
5547 vdev_compact_children(pvd);
5548
5549 ASSERT3P(pvd->vdev_child, !=, NULL);
5550
5551 cvd = pvd->vdev_child[0];
5552 if (pvd->vdev_children == 1) {
5553 vdev_remove_parent(cvd);
5554 cvd->vdev_splitting = B_TRUE;
5555 }
5556 vdev_propagate_state(cvd);
5557 }
5558
5559 void
vdev_deadman(vdev_t * vd,const char * tag)5560 vdev_deadman(vdev_t *vd, const char *tag)
5561 {
5562 for (int c = 0; c < vd->vdev_children; c++) {
5563 vdev_t *cvd = vd->vdev_child[c];
5564
5565 vdev_deadman(cvd, tag);
5566 }
5567
5568 if (vd->vdev_ops->vdev_op_leaf) {
5569 vdev_queue_t *vq = &vd->vdev_queue;
5570
5571 mutex_enter(&vq->vq_lock);
5572 if (vq->vq_active > 0) {
5573 spa_t *spa = vd->vdev_spa;
5574 zio_t *fio;
5575 uint64_t delta;
5576
5577 zfs_dbgmsg("slow vdev: %s has %u active IOs",
5578 vd->vdev_path, vq->vq_active);
5579
5580 /*
5581 * Look at the head of all the pending queues,
5582 * if any I/O has been outstanding for longer than
5583 * the spa_deadman_synctime invoke the deadman logic.
5584 */
5585 fio = list_head(&vq->vq_active_list);
5586 delta = gethrtime() - fio->io_timestamp;
5587 if (delta > spa_deadman_synctime(spa))
5588 zio_deadman(fio, tag);
5589 }
5590 mutex_exit(&vq->vq_lock);
5591 }
5592 }
5593
5594 void
vdev_defer_resilver(vdev_t * vd)5595 vdev_defer_resilver(vdev_t *vd)
5596 {
5597 ASSERT(vd->vdev_ops->vdev_op_leaf);
5598
5599 vd->vdev_resilver_deferred = B_TRUE;
5600 vd->vdev_spa->spa_resilver_deferred = B_TRUE;
5601 }
5602
5603 /*
5604 * Clears the resilver deferred flag on all leaf devs under vd. Returns
5605 * B_TRUE if we have devices that need to be resilvered and are available to
5606 * accept resilver I/Os.
5607 */
5608 boolean_t
vdev_clear_resilver_deferred(vdev_t * vd,dmu_tx_t * tx)5609 vdev_clear_resilver_deferred(vdev_t *vd, dmu_tx_t *tx)
5610 {
5611 boolean_t resilver_needed = B_FALSE;
5612 spa_t *spa = vd->vdev_spa;
5613
5614 for (int c = 0; c < vd->vdev_children; c++) {
5615 vdev_t *cvd = vd->vdev_child[c];
5616 resilver_needed |= vdev_clear_resilver_deferred(cvd, tx);
5617 }
5618
5619 if (vd == spa->spa_root_vdev &&
5620 spa_feature_is_active(spa, SPA_FEATURE_RESILVER_DEFER)) {
5621 spa_feature_decr(spa, SPA_FEATURE_RESILVER_DEFER, tx);
5622 vdev_config_dirty(vd);
5623 spa->spa_resilver_deferred = B_FALSE;
5624 return (resilver_needed);
5625 }
5626
5627 if (!vdev_is_concrete(vd) || vd->vdev_aux ||
5628 !vd->vdev_ops->vdev_op_leaf)
5629 return (resilver_needed);
5630
5631 vd->vdev_resilver_deferred = B_FALSE;
5632
5633 return (!vdev_is_dead(vd) && !vd->vdev_offline &&
5634 vdev_resilver_needed(vd, NULL, NULL));
5635 }
5636
5637 boolean_t
vdev_xlate_is_empty(range_seg64_t * rs)5638 vdev_xlate_is_empty(range_seg64_t *rs)
5639 {
5640 return (rs->rs_start == rs->rs_end);
5641 }
5642
5643 /*
5644 * Translate a logical range to the first contiguous physical range for the
5645 * specified vdev_t. This function is initially called with a leaf vdev and
5646 * will walk each parent vdev until it reaches a top-level vdev. Once the
5647 * top-level is reached the physical range is initialized and the recursive
5648 * function begins to unwind. As it unwinds it calls the parent's vdev
5649 * specific translation function to do the real conversion.
5650 */
5651 void
vdev_xlate(vdev_t * vd,const range_seg64_t * logical_rs,range_seg64_t * physical_rs,range_seg64_t * remain_rs)5652 vdev_xlate(vdev_t *vd, const range_seg64_t *logical_rs,
5653 range_seg64_t *physical_rs, range_seg64_t *remain_rs)
5654 {
5655 /*
5656 * Walk up the vdev tree
5657 */
5658 if (vd != vd->vdev_top) {
5659 vdev_xlate(vd->vdev_parent, logical_rs, physical_rs,
5660 remain_rs);
5661 } else {
5662 /*
5663 * We've reached the top-level vdev, initialize the physical
5664 * range to the logical range and set an empty remaining
5665 * range then start to unwind.
5666 */
5667 physical_rs->rs_start = logical_rs->rs_start;
5668 physical_rs->rs_end = logical_rs->rs_end;
5669
5670 remain_rs->rs_start = logical_rs->rs_start;
5671 remain_rs->rs_end = logical_rs->rs_start;
5672
5673 return;
5674 }
5675
5676 vdev_t *pvd = vd->vdev_parent;
5677 ASSERT3P(pvd, !=, NULL);
5678 ASSERT3P(pvd->vdev_ops->vdev_op_xlate, !=, NULL);
5679
5680 /*
5681 * As this recursive function unwinds, translate the logical
5682 * range into its physical and any remaining components by calling
5683 * the vdev specific translate function.
5684 */
5685 range_seg64_t intermediate = { 0 };
5686 pvd->vdev_ops->vdev_op_xlate(vd, physical_rs, &intermediate, remain_rs);
5687
5688 physical_rs->rs_start = intermediate.rs_start;
5689 physical_rs->rs_end = intermediate.rs_end;
5690 }
5691
5692 void
vdev_xlate_walk(vdev_t * vd,const range_seg64_t * logical_rs,vdev_xlate_func_t * func,void * arg)5693 vdev_xlate_walk(vdev_t *vd, const range_seg64_t *logical_rs,
5694 vdev_xlate_func_t *func, void *arg)
5695 {
5696 range_seg64_t iter_rs = *logical_rs;
5697 range_seg64_t physical_rs;
5698 range_seg64_t remain_rs;
5699
5700 while (!vdev_xlate_is_empty(&iter_rs)) {
5701
5702 vdev_xlate(vd, &iter_rs, &physical_rs, &remain_rs);
5703
5704 /*
5705 * With raidz and dRAID, it's possible that the logical range
5706 * does not live on this leaf vdev. Only when there is a non-
5707 * zero physical size call the provided function.
5708 */
5709 if (!vdev_xlate_is_empty(&physical_rs))
5710 func(arg, &physical_rs);
5711
5712 iter_rs = remain_rs;
5713 }
5714 }
5715
5716 static char *
vdev_name(vdev_t * vd,char * buf,int buflen)5717 vdev_name(vdev_t *vd, char *buf, int buflen)
5718 {
5719 if (vd->vdev_path == NULL) {
5720 if (strcmp(vd->vdev_ops->vdev_op_type, "root") == 0) {
5721 strlcpy(buf, vd->vdev_spa->spa_name, buflen);
5722 } else if (!vd->vdev_ops->vdev_op_leaf) {
5723 snprintf(buf, buflen, "%s-%llu",
5724 vd->vdev_ops->vdev_op_type,
5725 (u_longlong_t)vd->vdev_id);
5726 }
5727 } else {
5728 strlcpy(buf, vd->vdev_path, buflen);
5729 }
5730 return (buf);
5731 }
5732
5733 /*
5734 * Look at the vdev tree and determine whether any devices are currently being
5735 * replaced.
5736 */
5737 boolean_t
vdev_replace_in_progress(vdev_t * vdev)5738 vdev_replace_in_progress(vdev_t *vdev)
5739 {
5740 ASSERT(spa_config_held(vdev->vdev_spa, SCL_ALL, RW_READER) != 0);
5741
5742 if (vdev->vdev_ops == &vdev_replacing_ops)
5743 return (B_TRUE);
5744
5745 /*
5746 * A 'spare' vdev indicates that we have a replace in progress, unless
5747 * it has exactly two children, and the second, the hot spare, has
5748 * finished being resilvered.
5749 */
5750 if (vdev->vdev_ops == &vdev_spare_ops && (vdev->vdev_children > 2 ||
5751 !vdev_dtl_empty(vdev->vdev_child[1], DTL_MISSING)))
5752 return (B_TRUE);
5753
5754 for (int i = 0; i < vdev->vdev_children; i++) {
5755 if (vdev_replace_in_progress(vdev->vdev_child[i]))
5756 return (B_TRUE);
5757 }
5758
5759 return (B_FALSE);
5760 }
5761
5762 /*
5763 * Add a (source=src, propname=propval) list to an nvlist.
5764 */
5765 static void
vdev_prop_add_list(nvlist_t * nvl,const char * propname,const char * strval,uint64_t intval,zprop_source_t src)5766 vdev_prop_add_list(nvlist_t *nvl, const char *propname, const char *strval,
5767 uint64_t intval, zprop_source_t src)
5768 {
5769 nvlist_t *propval;
5770
5771 propval = fnvlist_alloc();
5772 fnvlist_add_uint64(propval, ZPROP_SOURCE, src);
5773
5774 if (strval != NULL)
5775 fnvlist_add_string(propval, ZPROP_VALUE, strval);
5776 else
5777 fnvlist_add_uint64(propval, ZPROP_VALUE, intval);
5778
5779 fnvlist_add_nvlist(nvl, propname, propval);
5780 nvlist_free(propval);
5781 }
5782
5783 static void
vdev_props_set_sync(void * arg,dmu_tx_t * tx)5784 vdev_props_set_sync(void *arg, dmu_tx_t *tx)
5785 {
5786 vdev_t *vd;
5787 nvlist_t *nvp = arg;
5788 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
5789 objset_t *mos = spa->spa_meta_objset;
5790 nvpair_t *elem = NULL;
5791 uint64_t vdev_guid;
5792 uint64_t objid;
5793 nvlist_t *nvprops;
5794
5795 vdev_guid = fnvlist_lookup_uint64(nvp, ZPOOL_VDEV_PROPS_SET_VDEV);
5796 nvprops = fnvlist_lookup_nvlist(nvp, ZPOOL_VDEV_PROPS_SET_PROPS);
5797 vd = spa_lookup_by_guid(spa, vdev_guid, B_TRUE);
5798
5799 /* this vdev could get removed while waiting for this sync task */
5800 if (vd == NULL)
5801 return;
5802
5803 /*
5804 * Set vdev property values in the vdev props mos object.
5805 */
5806 if (vd->vdev_root_zap != 0) {
5807 objid = vd->vdev_root_zap;
5808 } else if (vd->vdev_top_zap != 0) {
5809 objid = vd->vdev_top_zap;
5810 } else if (vd->vdev_leaf_zap != 0) {
5811 objid = vd->vdev_leaf_zap;
5812 } else {
5813 panic("unexpected vdev type");
5814 }
5815
5816 mutex_enter(&spa->spa_props_lock);
5817
5818 while ((elem = nvlist_next_nvpair(nvprops, elem)) != NULL) {
5819 uint64_t intval;
5820 const char *strval;
5821 vdev_prop_t prop;
5822 const char *propname = nvpair_name(elem);
5823 zprop_type_t proptype;
5824
5825 switch (prop = vdev_name_to_prop(propname)) {
5826 case VDEV_PROP_USERPROP:
5827 if (vdev_prop_user(propname)) {
5828 strval = fnvpair_value_string(elem);
5829 if (strlen(strval) == 0) {
5830 /* remove the property if value == "" */
5831 (void) zap_remove(mos, objid, propname,
5832 tx);
5833 } else {
5834 VERIFY0(zap_update(mos, objid, propname,
5835 1, strlen(strval) + 1, strval, tx));
5836 }
5837 spa_history_log_internal(spa, "vdev set", tx,
5838 "vdev_guid=%llu: %s=%s",
5839 (u_longlong_t)vdev_guid, nvpair_name(elem),
5840 strval);
5841 }
5842 break;
5843 default:
5844 /* normalize the property name */
5845 propname = vdev_prop_to_name(prop);
5846 proptype = vdev_prop_get_type(prop);
5847
5848 if (nvpair_type(elem) == DATA_TYPE_STRING) {
5849 ASSERT(proptype == PROP_TYPE_STRING);
5850 strval = fnvpair_value_string(elem);
5851 VERIFY0(zap_update(mos, objid, propname,
5852 1, strlen(strval) + 1, strval, tx));
5853 spa_history_log_internal(spa, "vdev set", tx,
5854 "vdev_guid=%llu: %s=%s",
5855 (u_longlong_t)vdev_guid, nvpair_name(elem),
5856 strval);
5857 } else if (nvpair_type(elem) == DATA_TYPE_UINT64) {
5858 intval = fnvpair_value_uint64(elem);
5859
5860 if (proptype == PROP_TYPE_INDEX) {
5861 const char *unused;
5862 VERIFY0(vdev_prop_index_to_string(
5863 prop, intval, &unused));
5864 }
5865 VERIFY0(zap_update(mos, objid, propname,
5866 sizeof (uint64_t), 1, &intval, tx));
5867 spa_history_log_internal(spa, "vdev set", tx,
5868 "vdev_guid=%llu: %s=%lld",
5869 (u_longlong_t)vdev_guid,
5870 nvpair_name(elem), (longlong_t)intval);
5871 } else {
5872 panic("invalid vdev property type %u",
5873 nvpair_type(elem));
5874 }
5875 }
5876
5877 }
5878
5879 mutex_exit(&spa->spa_props_lock);
5880 }
5881
5882 int
vdev_prop_set(vdev_t * vd,nvlist_t * innvl,nvlist_t * outnvl)5883 vdev_prop_set(vdev_t *vd, nvlist_t *innvl, nvlist_t *outnvl)
5884 {
5885 spa_t *spa = vd->vdev_spa;
5886 nvpair_t *elem = NULL;
5887 uint64_t vdev_guid;
5888 nvlist_t *nvprops;
5889 int error = 0;
5890
5891 ASSERT(vd != NULL);
5892
5893 /* Check that vdev has a zap we can use */
5894 if (vd->vdev_root_zap == 0 &&
5895 vd->vdev_top_zap == 0 &&
5896 vd->vdev_leaf_zap == 0)
5897 return (SET_ERROR(EINVAL));
5898
5899 if (nvlist_lookup_uint64(innvl, ZPOOL_VDEV_PROPS_SET_VDEV,
5900 &vdev_guid) != 0)
5901 return (SET_ERROR(EINVAL));
5902
5903 if (nvlist_lookup_nvlist(innvl, ZPOOL_VDEV_PROPS_SET_PROPS,
5904 &nvprops) != 0)
5905 return (SET_ERROR(EINVAL));
5906
5907 if ((vd = spa_lookup_by_guid(spa, vdev_guid, B_TRUE)) == NULL)
5908 return (SET_ERROR(EINVAL));
5909
5910 while ((elem = nvlist_next_nvpair(nvprops, elem)) != NULL) {
5911 const char *propname = nvpair_name(elem);
5912 vdev_prop_t prop = vdev_name_to_prop(propname);
5913 uint64_t intval = 0;
5914 const char *strval = NULL;
5915
5916 if (prop == VDEV_PROP_USERPROP && !vdev_prop_user(propname)) {
5917 error = EINVAL;
5918 goto end;
5919 }
5920
5921 if (vdev_prop_readonly(prop)) {
5922 error = EROFS;
5923 goto end;
5924 }
5925
5926 /* Special Processing */
5927 switch (prop) {
5928 case VDEV_PROP_PATH:
5929 if (vd->vdev_path == NULL) {
5930 error = EROFS;
5931 break;
5932 }
5933 if (nvpair_value_string(elem, &strval) != 0) {
5934 error = EINVAL;
5935 break;
5936 }
5937 /* New path must start with /dev/ */
5938 if (strncmp(strval, "/dev/", 5)) {
5939 error = EINVAL;
5940 break;
5941 }
5942 error = spa_vdev_setpath(spa, vdev_guid, strval);
5943 break;
5944 case VDEV_PROP_ALLOCATING:
5945 if (nvpair_value_uint64(elem, &intval) != 0) {
5946 error = EINVAL;
5947 break;
5948 }
5949 if (intval != vd->vdev_noalloc)
5950 break;
5951 if (intval == 0)
5952 error = spa_vdev_noalloc(spa, vdev_guid);
5953 else
5954 error = spa_vdev_alloc(spa, vdev_guid);
5955 break;
5956 case VDEV_PROP_FAILFAST:
5957 if (nvpair_value_uint64(elem, &intval) != 0) {
5958 error = EINVAL;
5959 break;
5960 }
5961 vd->vdev_failfast = intval & 1;
5962 break;
5963 case VDEV_PROP_CHECKSUM_N:
5964 if (nvpair_value_uint64(elem, &intval) != 0) {
5965 error = EINVAL;
5966 break;
5967 }
5968 vd->vdev_checksum_n = intval;
5969 break;
5970 case VDEV_PROP_CHECKSUM_T:
5971 if (nvpair_value_uint64(elem, &intval) != 0) {
5972 error = EINVAL;
5973 break;
5974 }
5975 vd->vdev_checksum_t = intval;
5976 break;
5977 case VDEV_PROP_IO_N:
5978 if (nvpair_value_uint64(elem, &intval) != 0) {
5979 error = EINVAL;
5980 break;
5981 }
5982 vd->vdev_io_n = intval;
5983 break;
5984 case VDEV_PROP_IO_T:
5985 if (nvpair_value_uint64(elem, &intval) != 0) {
5986 error = EINVAL;
5987 break;
5988 }
5989 vd->vdev_io_t = intval;
5990 break;
5991 case VDEV_PROP_SLOW_IO_N:
5992 if (nvpair_value_uint64(elem, &intval) != 0) {
5993 error = EINVAL;
5994 break;
5995 }
5996 vd->vdev_slow_io_n = intval;
5997 break;
5998 case VDEV_PROP_SLOW_IO_T:
5999 if (nvpair_value_uint64(elem, &intval) != 0) {
6000 error = EINVAL;
6001 break;
6002 }
6003 vd->vdev_slow_io_t = intval;
6004 break;
6005 default:
6006 /* Most processing is done in vdev_props_set_sync */
6007 break;
6008 }
6009 end:
6010 if (error != 0) {
6011 intval = error;
6012 vdev_prop_add_list(outnvl, propname, strval, intval, 0);
6013 return (error);
6014 }
6015 }
6016
6017 return (dsl_sync_task(spa->spa_name, NULL, vdev_props_set_sync,
6018 innvl, 6, ZFS_SPACE_CHECK_EXTRA_RESERVED));
6019 }
6020
6021 int
vdev_prop_get(vdev_t * vd,nvlist_t * innvl,nvlist_t * outnvl)6022 vdev_prop_get(vdev_t *vd, nvlist_t *innvl, nvlist_t *outnvl)
6023 {
6024 spa_t *spa = vd->vdev_spa;
6025 objset_t *mos = spa->spa_meta_objset;
6026 int err = 0;
6027 uint64_t objid;
6028 uint64_t vdev_guid;
6029 nvpair_t *elem = NULL;
6030 nvlist_t *nvprops = NULL;
6031 uint64_t intval = 0;
6032 char *strval = NULL;
6033 const char *propname = NULL;
6034 vdev_prop_t prop;
6035
6036 ASSERT(vd != NULL);
6037 ASSERT(mos != NULL);
6038
6039 if (nvlist_lookup_uint64(innvl, ZPOOL_VDEV_PROPS_GET_VDEV,
6040 &vdev_guid) != 0)
6041 return (SET_ERROR(EINVAL));
6042
6043 nvlist_lookup_nvlist(innvl, ZPOOL_VDEV_PROPS_GET_PROPS, &nvprops);
6044
6045 if (vd->vdev_root_zap != 0) {
6046 objid = vd->vdev_root_zap;
6047 } else if (vd->vdev_top_zap != 0) {
6048 objid = vd->vdev_top_zap;
6049 } else if (vd->vdev_leaf_zap != 0) {
6050 objid = vd->vdev_leaf_zap;
6051 } else {
6052 return (SET_ERROR(EINVAL));
6053 }
6054 ASSERT(objid != 0);
6055
6056 mutex_enter(&spa->spa_props_lock);
6057
6058 if (nvprops != NULL) {
6059 char namebuf[64] = { 0 };
6060
6061 while ((elem = nvlist_next_nvpair(nvprops, elem)) != NULL) {
6062 intval = 0;
6063 strval = NULL;
6064 propname = nvpair_name(elem);
6065 prop = vdev_name_to_prop(propname);
6066 zprop_source_t src = ZPROP_SRC_DEFAULT;
6067 uint64_t integer_size, num_integers;
6068
6069 switch (prop) {
6070 /* Special Read-only Properties */
6071 case VDEV_PROP_NAME:
6072 strval = vdev_name(vd, namebuf,
6073 sizeof (namebuf));
6074 if (strval == NULL)
6075 continue;
6076 vdev_prop_add_list(outnvl, propname, strval, 0,
6077 ZPROP_SRC_NONE);
6078 continue;
6079 case VDEV_PROP_CAPACITY:
6080 /* percent used */
6081 intval = (vd->vdev_stat.vs_dspace == 0) ? 0 :
6082 (vd->vdev_stat.vs_alloc * 100 /
6083 vd->vdev_stat.vs_dspace);
6084 vdev_prop_add_list(outnvl, propname, NULL,
6085 intval, ZPROP_SRC_NONE);
6086 continue;
6087 case VDEV_PROP_STATE:
6088 vdev_prop_add_list(outnvl, propname, NULL,
6089 vd->vdev_state, ZPROP_SRC_NONE);
6090 continue;
6091 case VDEV_PROP_GUID:
6092 vdev_prop_add_list(outnvl, propname, NULL,
6093 vd->vdev_guid, ZPROP_SRC_NONE);
6094 continue;
6095 case VDEV_PROP_ASIZE:
6096 vdev_prop_add_list(outnvl, propname, NULL,
6097 vd->vdev_asize, ZPROP_SRC_NONE);
6098 continue;
6099 case VDEV_PROP_PSIZE:
6100 vdev_prop_add_list(outnvl, propname, NULL,
6101 vd->vdev_psize, ZPROP_SRC_NONE);
6102 continue;
6103 case VDEV_PROP_ASHIFT:
6104 vdev_prop_add_list(outnvl, propname, NULL,
6105 vd->vdev_ashift, ZPROP_SRC_NONE);
6106 continue;
6107 case VDEV_PROP_SIZE:
6108 vdev_prop_add_list(outnvl, propname, NULL,
6109 vd->vdev_stat.vs_dspace, ZPROP_SRC_NONE);
6110 continue;
6111 case VDEV_PROP_FREE:
6112 vdev_prop_add_list(outnvl, propname, NULL,
6113 vd->vdev_stat.vs_dspace -
6114 vd->vdev_stat.vs_alloc, ZPROP_SRC_NONE);
6115 continue;
6116 case VDEV_PROP_ALLOCATED:
6117 vdev_prop_add_list(outnvl, propname, NULL,
6118 vd->vdev_stat.vs_alloc, ZPROP_SRC_NONE);
6119 continue;
6120 case VDEV_PROP_EXPANDSZ:
6121 vdev_prop_add_list(outnvl, propname, NULL,
6122 vd->vdev_stat.vs_esize, ZPROP_SRC_NONE);
6123 continue;
6124 case VDEV_PROP_FRAGMENTATION:
6125 vdev_prop_add_list(outnvl, propname, NULL,
6126 vd->vdev_stat.vs_fragmentation,
6127 ZPROP_SRC_NONE);
6128 continue;
6129 case VDEV_PROP_PARITY:
6130 vdev_prop_add_list(outnvl, propname, NULL,
6131 vdev_get_nparity(vd), ZPROP_SRC_NONE);
6132 continue;
6133 case VDEV_PROP_PATH:
6134 if (vd->vdev_path == NULL)
6135 continue;
6136 vdev_prop_add_list(outnvl, propname,
6137 vd->vdev_path, 0, ZPROP_SRC_NONE);
6138 continue;
6139 case VDEV_PROP_DEVID:
6140 if (vd->vdev_devid == NULL)
6141 continue;
6142 vdev_prop_add_list(outnvl, propname,
6143 vd->vdev_devid, 0, ZPROP_SRC_NONE);
6144 continue;
6145 case VDEV_PROP_PHYS_PATH:
6146 if (vd->vdev_physpath == NULL)
6147 continue;
6148 vdev_prop_add_list(outnvl, propname,
6149 vd->vdev_physpath, 0, ZPROP_SRC_NONE);
6150 continue;
6151 case VDEV_PROP_ENC_PATH:
6152 if (vd->vdev_enc_sysfs_path == NULL)
6153 continue;
6154 vdev_prop_add_list(outnvl, propname,
6155 vd->vdev_enc_sysfs_path, 0, ZPROP_SRC_NONE);
6156 continue;
6157 case VDEV_PROP_FRU:
6158 if (vd->vdev_fru == NULL)
6159 continue;
6160 vdev_prop_add_list(outnvl, propname,
6161 vd->vdev_fru, 0, ZPROP_SRC_NONE);
6162 continue;
6163 case VDEV_PROP_PARENT:
6164 if (vd->vdev_parent != NULL) {
6165 strval = vdev_name(vd->vdev_parent,
6166 namebuf, sizeof (namebuf));
6167 vdev_prop_add_list(outnvl, propname,
6168 strval, 0, ZPROP_SRC_NONE);
6169 }
6170 continue;
6171 case VDEV_PROP_CHILDREN:
6172 if (vd->vdev_children > 0)
6173 strval = kmem_zalloc(ZAP_MAXVALUELEN,
6174 KM_SLEEP);
6175 for (uint64_t i = 0; i < vd->vdev_children;
6176 i++) {
6177 const char *vname;
6178
6179 vname = vdev_name(vd->vdev_child[i],
6180 namebuf, sizeof (namebuf));
6181 if (vname == NULL)
6182 vname = "(unknown)";
6183 if (strlen(strval) > 0)
6184 strlcat(strval, ",",
6185 ZAP_MAXVALUELEN);
6186 strlcat(strval, vname, ZAP_MAXVALUELEN);
6187 }
6188 if (strval != NULL) {
6189 vdev_prop_add_list(outnvl, propname,
6190 strval, 0, ZPROP_SRC_NONE);
6191 kmem_free(strval, ZAP_MAXVALUELEN);
6192 }
6193 continue;
6194 case VDEV_PROP_NUMCHILDREN:
6195 vdev_prop_add_list(outnvl, propname, NULL,
6196 vd->vdev_children, ZPROP_SRC_NONE);
6197 continue;
6198 case VDEV_PROP_READ_ERRORS:
6199 vdev_prop_add_list(outnvl, propname, NULL,
6200 vd->vdev_stat.vs_read_errors,
6201 ZPROP_SRC_NONE);
6202 continue;
6203 case VDEV_PROP_WRITE_ERRORS:
6204 vdev_prop_add_list(outnvl, propname, NULL,
6205 vd->vdev_stat.vs_write_errors,
6206 ZPROP_SRC_NONE);
6207 continue;
6208 case VDEV_PROP_CHECKSUM_ERRORS:
6209 vdev_prop_add_list(outnvl, propname, NULL,
6210 vd->vdev_stat.vs_checksum_errors,
6211 ZPROP_SRC_NONE);
6212 continue;
6213 case VDEV_PROP_INITIALIZE_ERRORS:
6214 vdev_prop_add_list(outnvl, propname, NULL,
6215 vd->vdev_stat.vs_initialize_errors,
6216 ZPROP_SRC_NONE);
6217 continue;
6218 case VDEV_PROP_OPS_NULL:
6219 vdev_prop_add_list(outnvl, propname, NULL,
6220 vd->vdev_stat.vs_ops[ZIO_TYPE_NULL],
6221 ZPROP_SRC_NONE);
6222 continue;
6223 case VDEV_PROP_OPS_READ:
6224 vdev_prop_add_list(outnvl, propname, NULL,
6225 vd->vdev_stat.vs_ops[ZIO_TYPE_READ],
6226 ZPROP_SRC_NONE);
6227 continue;
6228 case VDEV_PROP_OPS_WRITE:
6229 vdev_prop_add_list(outnvl, propname, NULL,
6230 vd->vdev_stat.vs_ops[ZIO_TYPE_WRITE],
6231 ZPROP_SRC_NONE);
6232 continue;
6233 case VDEV_PROP_OPS_FREE:
6234 vdev_prop_add_list(outnvl, propname, NULL,
6235 vd->vdev_stat.vs_ops[ZIO_TYPE_FREE],
6236 ZPROP_SRC_NONE);
6237 continue;
6238 case VDEV_PROP_OPS_CLAIM:
6239 vdev_prop_add_list(outnvl, propname, NULL,
6240 vd->vdev_stat.vs_ops[ZIO_TYPE_CLAIM],
6241 ZPROP_SRC_NONE);
6242 continue;
6243 case VDEV_PROP_OPS_TRIM:
6244 /*
6245 * TRIM ops and bytes are reported to user
6246 * space as ZIO_TYPE_FLUSH. This is done to
6247 * preserve the vdev_stat_t structure layout
6248 * for user space.
6249 */
6250 vdev_prop_add_list(outnvl, propname, NULL,
6251 vd->vdev_stat.vs_ops[ZIO_TYPE_FLUSH],
6252 ZPROP_SRC_NONE);
6253 continue;
6254 case VDEV_PROP_BYTES_NULL:
6255 vdev_prop_add_list(outnvl, propname, NULL,
6256 vd->vdev_stat.vs_bytes[ZIO_TYPE_NULL],
6257 ZPROP_SRC_NONE);
6258 continue;
6259 case VDEV_PROP_BYTES_READ:
6260 vdev_prop_add_list(outnvl, propname, NULL,
6261 vd->vdev_stat.vs_bytes[ZIO_TYPE_READ],
6262 ZPROP_SRC_NONE);
6263 continue;
6264 case VDEV_PROP_BYTES_WRITE:
6265 vdev_prop_add_list(outnvl, propname, NULL,
6266 vd->vdev_stat.vs_bytes[ZIO_TYPE_WRITE],
6267 ZPROP_SRC_NONE);
6268 continue;
6269 case VDEV_PROP_BYTES_FREE:
6270 vdev_prop_add_list(outnvl, propname, NULL,
6271 vd->vdev_stat.vs_bytes[ZIO_TYPE_FREE],
6272 ZPROP_SRC_NONE);
6273 continue;
6274 case VDEV_PROP_BYTES_CLAIM:
6275 vdev_prop_add_list(outnvl, propname, NULL,
6276 vd->vdev_stat.vs_bytes[ZIO_TYPE_CLAIM],
6277 ZPROP_SRC_NONE);
6278 continue;
6279 case VDEV_PROP_BYTES_TRIM:
6280 /*
6281 * TRIM ops and bytes are reported to user
6282 * space as ZIO_TYPE_FLUSH. This is done to
6283 * preserve the vdev_stat_t structure layout
6284 * for user space.
6285 */
6286 vdev_prop_add_list(outnvl, propname, NULL,
6287 vd->vdev_stat.vs_bytes[ZIO_TYPE_FLUSH],
6288 ZPROP_SRC_NONE);
6289 continue;
6290 case VDEV_PROP_REMOVING:
6291 vdev_prop_add_list(outnvl, propname, NULL,
6292 vd->vdev_removing, ZPROP_SRC_NONE);
6293 continue;
6294 case VDEV_PROP_RAIDZ_EXPANDING:
6295 /* Only expose this for raidz */
6296 if (vd->vdev_ops == &vdev_raidz_ops) {
6297 vdev_prop_add_list(outnvl, propname,
6298 NULL, vd->vdev_rz_expanding,
6299 ZPROP_SRC_NONE);
6300 }
6301 continue;
6302 /* Numeric Properites */
6303 case VDEV_PROP_ALLOCATING:
6304 /* Leaf vdevs cannot have this property */
6305 if (vd->vdev_mg == NULL &&
6306 vd->vdev_top != NULL) {
6307 src = ZPROP_SRC_NONE;
6308 intval = ZPROP_BOOLEAN_NA;
6309 } else {
6310 err = vdev_prop_get_int(vd, prop,
6311 &intval);
6312 if (err && err != ENOENT)
6313 break;
6314
6315 if (intval ==
6316 vdev_prop_default_numeric(prop))
6317 src = ZPROP_SRC_DEFAULT;
6318 else
6319 src = ZPROP_SRC_LOCAL;
6320 }
6321
6322 vdev_prop_add_list(outnvl, propname, NULL,
6323 intval, src);
6324 break;
6325 case VDEV_PROP_FAILFAST:
6326 src = ZPROP_SRC_LOCAL;
6327 strval = NULL;
6328
6329 err = zap_lookup(mos, objid, nvpair_name(elem),
6330 sizeof (uint64_t), 1, &intval);
6331 if (err == ENOENT) {
6332 intval = vdev_prop_default_numeric(
6333 prop);
6334 err = 0;
6335 } else if (err) {
6336 break;
6337 }
6338 if (intval == vdev_prop_default_numeric(prop))
6339 src = ZPROP_SRC_DEFAULT;
6340
6341 vdev_prop_add_list(outnvl, propname, strval,
6342 intval, src);
6343 break;
6344 case VDEV_PROP_CHECKSUM_N:
6345 case VDEV_PROP_CHECKSUM_T:
6346 case VDEV_PROP_IO_N:
6347 case VDEV_PROP_IO_T:
6348 case VDEV_PROP_SLOW_IO_N:
6349 case VDEV_PROP_SLOW_IO_T:
6350 err = vdev_prop_get_int(vd, prop, &intval);
6351 if (err && err != ENOENT)
6352 break;
6353
6354 if (intval == vdev_prop_default_numeric(prop))
6355 src = ZPROP_SRC_DEFAULT;
6356 else
6357 src = ZPROP_SRC_LOCAL;
6358
6359 vdev_prop_add_list(outnvl, propname, NULL,
6360 intval, src);
6361 break;
6362 /* Text Properties */
6363 case VDEV_PROP_COMMENT:
6364 /* Exists in the ZAP below */
6365 /* FALLTHRU */
6366 case VDEV_PROP_USERPROP:
6367 /* User Properites */
6368 src = ZPROP_SRC_LOCAL;
6369
6370 err = zap_length(mos, objid, nvpair_name(elem),
6371 &integer_size, &num_integers);
6372 if (err)
6373 break;
6374
6375 switch (integer_size) {
6376 case 8:
6377 /* User properties cannot be integers */
6378 err = EINVAL;
6379 break;
6380 case 1:
6381 /* string property */
6382 strval = kmem_alloc(num_integers,
6383 KM_SLEEP);
6384 err = zap_lookup(mos, objid,
6385 nvpair_name(elem), 1,
6386 num_integers, strval);
6387 if (err) {
6388 kmem_free(strval,
6389 num_integers);
6390 break;
6391 }
6392 vdev_prop_add_list(outnvl, propname,
6393 strval, 0, src);
6394 kmem_free(strval, num_integers);
6395 break;
6396 }
6397 break;
6398 default:
6399 err = ENOENT;
6400 break;
6401 }
6402 if (err)
6403 break;
6404 }
6405 } else {
6406 /*
6407 * Get all properties from the MOS vdev property object.
6408 */
6409 zap_cursor_t zc;
6410 zap_attribute_t za;
6411 for (zap_cursor_init(&zc, mos, objid);
6412 (err = zap_cursor_retrieve(&zc, &za)) == 0;
6413 zap_cursor_advance(&zc)) {
6414 intval = 0;
6415 strval = NULL;
6416 zprop_source_t src = ZPROP_SRC_DEFAULT;
6417 propname = za.za_name;
6418
6419 switch (za.za_integer_length) {
6420 case 8:
6421 /* We do not allow integer user properties */
6422 /* This is likely an internal value */
6423 break;
6424 case 1:
6425 /* string property */
6426 strval = kmem_alloc(za.za_num_integers,
6427 KM_SLEEP);
6428 err = zap_lookup(mos, objid, za.za_name, 1,
6429 za.za_num_integers, strval);
6430 if (err) {
6431 kmem_free(strval, za.za_num_integers);
6432 break;
6433 }
6434 vdev_prop_add_list(outnvl, propname, strval, 0,
6435 src);
6436 kmem_free(strval, za.za_num_integers);
6437 break;
6438
6439 default:
6440 break;
6441 }
6442 }
6443 zap_cursor_fini(&zc);
6444 }
6445
6446 mutex_exit(&spa->spa_props_lock);
6447 if (err && err != ENOENT) {
6448 return (err);
6449 }
6450
6451 return (0);
6452 }
6453
6454 EXPORT_SYMBOL(vdev_fault);
6455 EXPORT_SYMBOL(vdev_degrade);
6456 EXPORT_SYMBOL(vdev_online);
6457 EXPORT_SYMBOL(vdev_offline);
6458 EXPORT_SYMBOL(vdev_clear);
6459
6460 ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, default_ms_count, UINT, ZMOD_RW,
6461 "Target number of metaslabs per top-level vdev");
6462
6463 ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, default_ms_shift, UINT, ZMOD_RW,
6464 "Default lower limit for metaslab size");
6465
6466 ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, max_ms_shift, UINT, ZMOD_RW,
6467 "Default upper limit for metaslab size");
6468
6469 ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, min_ms_count, UINT, ZMOD_RW,
6470 "Minimum number of metaslabs per top-level vdev");
6471
6472 ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, ms_count_limit, UINT, ZMOD_RW,
6473 "Practical upper limit of total metaslabs per top-level vdev");
6474
6475 ZFS_MODULE_PARAM(zfs, zfs_, slow_io_events_per_second, UINT, ZMOD_RW,
6476 "Rate limit slow IO (delay) events to this many per second");
6477
6478 /* BEGIN CSTYLED */
6479 ZFS_MODULE_PARAM(zfs, zfs_, checksum_events_per_second, UINT, ZMOD_RW,
6480 "Rate limit checksum events to this many checksum errors per second "
6481 "(do not set below ZED threshold).");
6482 /* END CSTYLED */
6483
6484 ZFS_MODULE_PARAM(zfs, zfs_, scan_ignore_errors, INT, ZMOD_RW,
6485 "Ignore errors during resilver/scrub");
6486
6487 ZFS_MODULE_PARAM(zfs_vdev, vdev_, validate_skip, INT, ZMOD_RW,
6488 "Bypass vdev_validate()");
6489
6490 ZFS_MODULE_PARAM(zfs, zfs_, nocacheflush, INT, ZMOD_RW,
6491 "Disable cache flushes");
6492
6493 ZFS_MODULE_PARAM(zfs, zfs_, embedded_slog_min_ms, UINT, ZMOD_RW,
6494 "Minimum number of metaslabs required to dedicate one for log blocks");
6495
6496 /* BEGIN CSTYLED */
6497 ZFS_MODULE_PARAM_CALL(zfs_vdev, zfs_vdev_, min_auto_ashift,
6498 param_set_min_auto_ashift, param_get_uint, ZMOD_RW,
6499 "Minimum ashift used when creating new top-level vdevs");
6500
6501 ZFS_MODULE_PARAM_CALL(zfs_vdev, zfs_vdev_, max_auto_ashift,
6502 param_set_max_auto_ashift, param_get_uint, ZMOD_RW,
6503 "Maximum ashift used when optimizing for logical -> physical sector "
6504 "size on new top-level vdevs");
6505 /* END CSTYLED */
6506