1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or https://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2024 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2013 Steven Hartland. All rights reserved.
26 * Copyright (c) 2014 Integros [integros.com]
27 * Copyright 2017 Joyent, Inc.
28 * Copyright (c) 2017, Intel Corporation.
29 */
30
31 /*
32 * The objective of this program is to provide a DMU/ZAP/SPA stress test
33 * that runs entirely in userland, is easy to use, and easy to extend.
34 *
35 * The overall design of the ztest program is as follows:
36 *
37 * (1) For each major functional area (e.g. adding vdevs to a pool,
38 * creating and destroying datasets, reading and writing objects, etc)
39 * we have a simple routine to test that functionality. These
40 * individual routines do not have to do anything "stressful".
41 *
42 * (2) We turn these simple functionality tests into a stress test by
43 * running them all in parallel, with as many threads as desired,
44 * and spread across as many datasets, objects, and vdevs as desired.
45 *
46 * (3) While all this is happening, we inject faults into the pool to
47 * verify that self-healing data really works.
48 *
49 * (4) Every time we open a dataset, we change its checksum and compression
50 * functions. Thus even individual objects vary from block to block
51 * in which checksum they use and whether they're compressed.
52 *
53 * (5) To verify that we never lose on-disk consistency after a crash,
54 * we run the entire test in a child of the main process.
55 * At random times, the child self-immolates with a SIGKILL.
56 * This is the software equivalent of pulling the power cord.
57 * The parent then runs the test again, using the existing
58 * storage pool, as many times as desired. If backwards compatibility
59 * testing is enabled ztest will sometimes run the "older" version
60 * of ztest after a SIGKILL.
61 *
62 * (6) To verify that we don't have future leaks or temporal incursions,
63 * many of the functional tests record the transaction group number
64 * as part of their data. When reading old data, they verify that
65 * the transaction group number is less than the current, open txg.
66 * If you add a new test, please do this if applicable.
67 *
68 * (7) Threads are created with a reduced stack size, for sanity checking.
69 * Therefore, it's important not to allocate huge buffers on the stack.
70 *
71 * When run with no arguments, ztest runs for about five minutes and
72 * produces no output if successful. To get a little bit of information,
73 * specify -V. To get more information, specify -VV, and so on.
74 *
75 * To turn this into an overnight stress test, use -T to specify run time.
76 *
77 * You can ask more vdevs [-v], datasets [-d], or threads [-t]
78 * to increase the pool capacity, fanout, and overall stress level.
79 *
80 * Use the -k option to set the desired frequency of kills.
81 *
82 * When ztest invokes itself it passes all relevant information through a
83 * temporary file which is mmap-ed in the child process. This allows shared
84 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always
85 * stored at offset 0 of this file and contains information on the size and
86 * number of shared structures in the file. The information stored in this file
87 * must remain backwards compatible with older versions of ztest so that
88 * ztest can invoke them during backwards compatibility testing (-B).
89 */
90
91 #include <sys/zfs_context.h>
92 #include <sys/spa.h>
93 #include <sys/dmu.h>
94 #include <sys/txg.h>
95 #include <sys/dbuf.h>
96 #include <sys/zap.h>
97 #include <sys/dmu_objset.h>
98 #include <sys/poll.h>
99 #include <sys/stat.h>
100 #include <sys/time.h>
101 #include <sys/wait.h>
102 #include <sys/mman.h>
103 #include <sys/resource.h>
104 #include <sys/zio.h>
105 #include <sys/zil.h>
106 #include <sys/zil_impl.h>
107 #include <sys/vdev_draid.h>
108 #include <sys/vdev_impl.h>
109 #include <sys/vdev_file.h>
110 #include <sys/vdev_initialize.h>
111 #include <sys/vdev_raidz.h>
112 #include <sys/vdev_trim.h>
113 #include <sys/spa_impl.h>
114 #include <sys/metaslab_impl.h>
115 #include <sys/dsl_prop.h>
116 #include <sys/dsl_dataset.h>
117 #include <sys/dsl_destroy.h>
118 #include <sys/dsl_scan.h>
119 #include <sys/zio_checksum.h>
120 #include <sys/zfs_refcount.h>
121 #include <sys/zfeature.h>
122 #include <sys/dsl_userhold.h>
123 #include <sys/abd.h>
124 #include <sys/blake3.h>
125 #include <stdio.h>
126 #include <stdlib.h>
127 #include <unistd.h>
128 #include <getopt.h>
129 #include <signal.h>
130 #include <umem.h>
131 #include <ctype.h>
132 #include <math.h>
133 #include <sys/fs/zfs.h>
134 #include <zfs_fletcher.h>
135 #include <libnvpair.h>
136 #include <libzutil.h>
137 #include <sys/crypto/icp.h>
138 #include <sys/zfs_impl.h>
139 #include <sys/backtrace.h>
140
141 static int ztest_fd_data = -1;
142 static int ztest_fd_rand = -1;
143
144 typedef struct ztest_shared_hdr {
145 uint64_t zh_hdr_size;
146 uint64_t zh_opts_size;
147 uint64_t zh_size;
148 uint64_t zh_stats_size;
149 uint64_t zh_stats_count;
150 uint64_t zh_ds_size;
151 uint64_t zh_ds_count;
152 uint64_t zh_scratch_state_size;
153 } ztest_shared_hdr_t;
154
155 static ztest_shared_hdr_t *ztest_shared_hdr;
156
157 enum ztest_class_state {
158 ZTEST_VDEV_CLASS_OFF,
159 ZTEST_VDEV_CLASS_ON,
160 ZTEST_VDEV_CLASS_RND
161 };
162
163 /* Dedicated RAIDZ Expansion test states */
164 typedef enum {
165 RAIDZ_EXPAND_NONE, /* Default is none, must opt-in */
166 RAIDZ_EXPAND_REQUESTED, /* The '-X' option was used */
167 RAIDZ_EXPAND_STARTED, /* Testing has commenced */
168 RAIDZ_EXPAND_KILLED, /* Reached the proccess kill */
169 RAIDZ_EXPAND_CHECKED, /* Pool scrub verification done */
170 } raidz_expand_test_state_t;
171
172
173 #define ZO_GVARS_MAX_ARGLEN ((size_t)64)
174 #define ZO_GVARS_MAX_COUNT ((size_t)10)
175
176 typedef struct ztest_shared_opts {
177 char zo_pool[ZFS_MAX_DATASET_NAME_LEN];
178 char zo_dir[ZFS_MAX_DATASET_NAME_LEN];
179 char zo_alt_ztest[MAXNAMELEN];
180 char zo_alt_libpath[MAXNAMELEN];
181 uint64_t zo_vdevs;
182 uint64_t zo_vdevtime;
183 size_t zo_vdev_size;
184 int zo_ashift;
185 int zo_mirrors;
186 int zo_raid_do_expand;
187 int zo_raid_children;
188 int zo_raid_parity;
189 char zo_raid_type[8];
190 int zo_draid_data;
191 int zo_draid_spares;
192 int zo_datasets;
193 int zo_threads;
194 uint64_t zo_passtime;
195 uint64_t zo_killrate;
196 int zo_verbose;
197 int zo_init;
198 uint64_t zo_time;
199 uint64_t zo_maxloops;
200 uint64_t zo_metaslab_force_ganging;
201 raidz_expand_test_state_t zo_raidz_expand_test;
202 int zo_mmp_test;
203 int zo_special_vdevs;
204 int zo_dump_dbgmsg;
205 int zo_gvars_count;
206 char zo_gvars[ZO_GVARS_MAX_COUNT][ZO_GVARS_MAX_ARGLEN];
207 } ztest_shared_opts_t;
208
209 /* Default values for command line options. */
210 #define DEFAULT_POOL "ztest"
211 #define DEFAULT_VDEV_DIR "/tmp"
212 #define DEFAULT_VDEV_COUNT 5
213 #define DEFAULT_VDEV_SIZE (SPA_MINDEVSIZE * 4) /* 256m default size */
214 #define DEFAULT_VDEV_SIZE_STR "256M"
215 #define DEFAULT_ASHIFT SPA_MINBLOCKSHIFT
216 #define DEFAULT_MIRRORS 2
217 #define DEFAULT_RAID_CHILDREN 4
218 #define DEFAULT_RAID_PARITY 1
219 #define DEFAULT_DRAID_DATA 4
220 #define DEFAULT_DRAID_SPARES 1
221 #define DEFAULT_DATASETS_COUNT 7
222 #define DEFAULT_THREADS 23
223 #define DEFAULT_RUN_TIME 300 /* 300 seconds */
224 #define DEFAULT_RUN_TIME_STR "300 sec"
225 #define DEFAULT_PASS_TIME 60 /* 60 seconds */
226 #define DEFAULT_PASS_TIME_STR "60 sec"
227 #define DEFAULT_KILL_RATE 70 /* 70% kill rate */
228 #define DEFAULT_KILLRATE_STR "70%"
229 #define DEFAULT_INITS 1
230 #define DEFAULT_MAX_LOOPS 50 /* 5 minutes */
231 #define DEFAULT_FORCE_GANGING (64 << 10)
232 #define DEFAULT_FORCE_GANGING_STR "64K"
233
234 /* Simplifying assumption: -1 is not a valid default. */
235 #define NO_DEFAULT -1
236
237 static const ztest_shared_opts_t ztest_opts_defaults = {
238 .zo_pool = DEFAULT_POOL,
239 .zo_dir = DEFAULT_VDEV_DIR,
240 .zo_alt_ztest = { '\0' },
241 .zo_alt_libpath = { '\0' },
242 .zo_vdevs = DEFAULT_VDEV_COUNT,
243 .zo_ashift = DEFAULT_ASHIFT,
244 .zo_mirrors = DEFAULT_MIRRORS,
245 .zo_raid_children = DEFAULT_RAID_CHILDREN,
246 .zo_raid_parity = DEFAULT_RAID_PARITY,
247 .zo_raid_type = VDEV_TYPE_RAIDZ,
248 .zo_vdev_size = DEFAULT_VDEV_SIZE,
249 .zo_draid_data = DEFAULT_DRAID_DATA, /* data drives */
250 .zo_draid_spares = DEFAULT_DRAID_SPARES, /* distributed spares */
251 .zo_datasets = DEFAULT_DATASETS_COUNT,
252 .zo_threads = DEFAULT_THREADS,
253 .zo_passtime = DEFAULT_PASS_TIME,
254 .zo_killrate = DEFAULT_KILL_RATE,
255 .zo_verbose = 0,
256 .zo_mmp_test = 0,
257 .zo_init = DEFAULT_INITS,
258 .zo_time = DEFAULT_RUN_TIME,
259 .zo_maxloops = DEFAULT_MAX_LOOPS, /* max loops during spa_freeze() */
260 .zo_metaslab_force_ganging = DEFAULT_FORCE_GANGING,
261 .zo_special_vdevs = ZTEST_VDEV_CLASS_RND,
262 .zo_gvars_count = 0,
263 .zo_raidz_expand_test = RAIDZ_EXPAND_NONE,
264 };
265
266 extern uint64_t metaslab_force_ganging;
267 extern uint64_t metaslab_df_alloc_threshold;
268 extern uint64_t zfs_deadman_synctime_ms;
269 extern uint_t metaslab_preload_limit;
270 extern int zfs_compressed_arc_enabled;
271 extern int zfs_abd_scatter_enabled;
272 extern uint_t dmu_object_alloc_chunk_shift;
273 extern boolean_t zfs_force_some_double_word_sm_entries;
274 extern unsigned long zio_decompress_fail_fraction;
275 extern unsigned long zfs_reconstruct_indirect_damage_fraction;
276 extern uint64_t raidz_expand_max_reflow_bytes;
277 extern uint_t raidz_expand_pause_point;
278
279
280 static ztest_shared_opts_t *ztest_shared_opts;
281 static ztest_shared_opts_t ztest_opts;
282 static const char *const ztest_wkeydata = "abcdefghijklmnopqrstuvwxyz012345";
283
284 typedef struct ztest_shared_ds {
285 uint64_t zd_seq;
286 } ztest_shared_ds_t;
287
288 static ztest_shared_ds_t *ztest_shared_ds;
289 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d])
290
291 typedef struct ztest_scratch_state {
292 uint64_t zs_raidz_scratch_verify_pause;
293 } ztest_shared_scratch_state_t;
294
295 static ztest_shared_scratch_state_t *ztest_scratch_state;
296
297 #define BT_MAGIC 0x123456789abcdefULL
298 #define MAXFAULTS(zs) \
299 (MAX((zs)->zs_mirrors, 1) * (ztest_opts.zo_raid_parity + 1) - 1)
300
301 enum ztest_io_type {
302 ZTEST_IO_WRITE_TAG,
303 ZTEST_IO_WRITE_PATTERN,
304 ZTEST_IO_WRITE_ZEROES,
305 ZTEST_IO_TRUNCATE,
306 ZTEST_IO_SETATTR,
307 ZTEST_IO_REWRITE,
308 ZTEST_IO_TYPES
309 };
310
311 typedef struct ztest_block_tag {
312 uint64_t bt_magic;
313 uint64_t bt_objset;
314 uint64_t bt_object;
315 uint64_t bt_dnodesize;
316 uint64_t bt_offset;
317 uint64_t bt_gen;
318 uint64_t bt_txg;
319 uint64_t bt_crtxg;
320 } ztest_block_tag_t;
321
322 typedef struct bufwad {
323 uint64_t bw_index;
324 uint64_t bw_txg;
325 uint64_t bw_data;
326 } bufwad_t;
327
328 /*
329 * It would be better to use a rangelock_t per object. Unfortunately
330 * the rangelock_t is not a drop-in replacement for rl_t, because we
331 * still need to map from object ID to rangelock_t.
332 */
333 typedef enum {
334 ZTRL_READER,
335 ZTRL_WRITER,
336 ZTRL_APPEND
337 } rl_type_t;
338
339 typedef struct rll {
340 void *rll_writer;
341 int rll_readers;
342 kmutex_t rll_lock;
343 kcondvar_t rll_cv;
344 } rll_t;
345
346 typedef struct rl {
347 uint64_t rl_object;
348 uint64_t rl_offset;
349 uint64_t rl_size;
350 rll_t *rl_lock;
351 } rl_t;
352
353 #define ZTEST_RANGE_LOCKS 64
354 #define ZTEST_OBJECT_LOCKS 64
355
356 /*
357 * Object descriptor. Used as a template for object lookup/create/remove.
358 */
359 typedef struct ztest_od {
360 uint64_t od_dir;
361 uint64_t od_object;
362 dmu_object_type_t od_type;
363 dmu_object_type_t od_crtype;
364 uint64_t od_blocksize;
365 uint64_t od_crblocksize;
366 uint64_t od_crdnodesize;
367 uint64_t od_gen;
368 uint64_t od_crgen;
369 char od_name[ZFS_MAX_DATASET_NAME_LEN];
370 } ztest_od_t;
371
372 /*
373 * Per-dataset state.
374 */
375 typedef struct ztest_ds {
376 ztest_shared_ds_t *zd_shared;
377 objset_t *zd_os;
378 pthread_rwlock_t zd_zilog_lock;
379 zilog_t *zd_zilog;
380 ztest_od_t *zd_od; /* debugging aid */
381 char zd_name[ZFS_MAX_DATASET_NAME_LEN];
382 kmutex_t zd_dirobj_lock;
383 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS];
384 rll_t zd_range_lock[ZTEST_RANGE_LOCKS];
385 } ztest_ds_t;
386
387 /*
388 * Per-iteration state.
389 */
390 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id);
391
392 typedef struct ztest_info {
393 ztest_func_t *zi_func; /* test function */
394 uint64_t zi_iters; /* iterations per execution */
395 uint64_t *zi_interval; /* execute every <interval> seconds */
396 const char *zi_funcname; /* name of test function */
397 } ztest_info_t;
398
399 typedef struct ztest_shared_callstate {
400 uint64_t zc_count; /* per-pass count */
401 uint64_t zc_time; /* per-pass time */
402 uint64_t zc_next; /* next time to call this function */
403 } ztest_shared_callstate_t;
404
405 static ztest_shared_callstate_t *ztest_shared_callstate;
406 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c])
407
408 ztest_func_t ztest_dmu_read_write;
409 ztest_func_t ztest_dmu_write_parallel;
410 ztest_func_t ztest_dmu_object_alloc_free;
411 ztest_func_t ztest_dmu_object_next_chunk;
412 ztest_func_t ztest_dmu_commit_callbacks;
413 ztest_func_t ztest_zap;
414 ztest_func_t ztest_zap_parallel;
415 ztest_func_t ztest_zil_commit;
416 ztest_func_t ztest_zil_remount;
417 ztest_func_t ztest_dmu_read_write_zcopy;
418 ztest_func_t ztest_dmu_objset_create_destroy;
419 ztest_func_t ztest_dmu_prealloc;
420 ztest_func_t ztest_fzap;
421 ztest_func_t ztest_dmu_snapshot_create_destroy;
422 ztest_func_t ztest_dsl_prop_get_set;
423 ztest_func_t ztest_spa_prop_get_set;
424 ztest_func_t ztest_spa_create_destroy;
425 ztest_func_t ztest_fault_inject;
426 ztest_func_t ztest_dmu_snapshot_hold;
427 ztest_func_t ztest_mmp_enable_disable;
428 ztest_func_t ztest_scrub;
429 ztest_func_t ztest_dsl_dataset_promote_busy;
430 ztest_func_t ztest_vdev_attach_detach;
431 ztest_func_t ztest_vdev_raidz_attach;
432 ztest_func_t ztest_vdev_LUN_growth;
433 ztest_func_t ztest_vdev_add_remove;
434 ztest_func_t ztest_vdev_class_add;
435 ztest_func_t ztest_vdev_aux_add_remove;
436 ztest_func_t ztest_split_pool;
437 ztest_func_t ztest_reguid;
438 ztest_func_t ztest_spa_upgrade;
439 ztest_func_t ztest_device_removal;
440 ztest_func_t ztest_spa_checkpoint_create_discard;
441 ztest_func_t ztest_initialize;
442 ztest_func_t ztest_trim;
443 ztest_func_t ztest_blake3;
444 ztest_func_t ztest_fletcher;
445 ztest_func_t ztest_fletcher_incr;
446 ztest_func_t ztest_verify_dnode_bt;
447
448 static uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */
449 static uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */
450 static uint64_t zopt_often = 1ULL * NANOSEC; /* every second */
451 static uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */
452 static uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */
453
454 #define ZTI_INIT(func, iters, interval) \
455 { .zi_func = (func), \
456 .zi_iters = (iters), \
457 .zi_interval = (interval), \
458 .zi_funcname = # func }
459
460 static ztest_info_t ztest_info[] = {
461 ZTI_INIT(ztest_dmu_read_write, 1, &zopt_always),
462 ZTI_INIT(ztest_dmu_write_parallel, 10, &zopt_always),
463 ZTI_INIT(ztest_dmu_object_alloc_free, 1, &zopt_always),
464 ZTI_INIT(ztest_dmu_object_next_chunk, 1, &zopt_sometimes),
465 ZTI_INIT(ztest_dmu_commit_callbacks, 1, &zopt_always),
466 ZTI_INIT(ztest_zap, 30, &zopt_always),
467 ZTI_INIT(ztest_zap_parallel, 100, &zopt_always),
468 ZTI_INIT(ztest_split_pool, 1, &zopt_sometimes),
469 ZTI_INIT(ztest_zil_commit, 1, &zopt_incessant),
470 ZTI_INIT(ztest_zil_remount, 1, &zopt_sometimes),
471 ZTI_INIT(ztest_dmu_read_write_zcopy, 1, &zopt_often),
472 ZTI_INIT(ztest_dmu_objset_create_destroy, 1, &zopt_often),
473 ZTI_INIT(ztest_dsl_prop_get_set, 1, &zopt_often),
474 ZTI_INIT(ztest_spa_prop_get_set, 1, &zopt_sometimes),
475 #if 0
476 ZTI_INIT(ztest_dmu_prealloc, 1, &zopt_sometimes),
477 #endif
478 ZTI_INIT(ztest_fzap, 1, &zopt_sometimes),
479 ZTI_INIT(ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes),
480 ZTI_INIT(ztest_spa_create_destroy, 1, &zopt_sometimes),
481 ZTI_INIT(ztest_fault_inject, 1, &zopt_sometimes),
482 ZTI_INIT(ztest_dmu_snapshot_hold, 1, &zopt_sometimes),
483 ZTI_INIT(ztest_mmp_enable_disable, 1, &zopt_sometimes),
484 ZTI_INIT(ztest_reguid, 1, &zopt_rarely),
485 ZTI_INIT(ztest_scrub, 1, &zopt_rarely),
486 ZTI_INIT(ztest_spa_upgrade, 1, &zopt_rarely),
487 ZTI_INIT(ztest_dsl_dataset_promote_busy, 1, &zopt_rarely),
488 ZTI_INIT(ztest_vdev_attach_detach, 1, &zopt_sometimes),
489 ZTI_INIT(ztest_vdev_raidz_attach, 1, &zopt_sometimes),
490 ZTI_INIT(ztest_vdev_LUN_growth, 1, &zopt_rarely),
491 ZTI_INIT(ztest_vdev_add_remove, 1, &ztest_opts.zo_vdevtime),
492 ZTI_INIT(ztest_vdev_class_add, 1, &ztest_opts.zo_vdevtime),
493 ZTI_INIT(ztest_vdev_aux_add_remove, 1, &ztest_opts.zo_vdevtime),
494 ZTI_INIT(ztest_device_removal, 1, &zopt_sometimes),
495 ZTI_INIT(ztest_spa_checkpoint_create_discard, 1, &zopt_rarely),
496 ZTI_INIT(ztest_initialize, 1, &zopt_sometimes),
497 ZTI_INIT(ztest_trim, 1, &zopt_sometimes),
498 ZTI_INIT(ztest_blake3, 1, &zopt_rarely),
499 ZTI_INIT(ztest_fletcher, 1, &zopt_rarely),
500 ZTI_INIT(ztest_fletcher_incr, 1, &zopt_rarely),
501 ZTI_INIT(ztest_verify_dnode_bt, 1, &zopt_sometimes),
502 };
503
504 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t))
505
506 /*
507 * The following struct is used to hold a list of uncalled commit callbacks.
508 * The callbacks are ordered by txg number.
509 */
510 typedef struct ztest_cb_list {
511 kmutex_t zcl_callbacks_lock;
512 list_t zcl_callbacks;
513 } ztest_cb_list_t;
514
515 /*
516 * Stuff we need to share writably between parent and child.
517 */
518 typedef struct ztest_shared {
519 boolean_t zs_do_init;
520 hrtime_t zs_proc_start;
521 hrtime_t zs_proc_stop;
522 hrtime_t zs_thread_start;
523 hrtime_t zs_thread_stop;
524 hrtime_t zs_thread_kill;
525 uint64_t zs_enospc_count;
526 uint64_t zs_vdev_next_leaf;
527 uint64_t zs_vdev_aux;
528 uint64_t zs_alloc;
529 uint64_t zs_space;
530 uint64_t zs_splits;
531 uint64_t zs_mirrors;
532 uint64_t zs_metaslab_sz;
533 uint64_t zs_metaslab_df_alloc_threshold;
534 uint64_t zs_guid;
535 } ztest_shared_t;
536
537 #define ID_PARALLEL -1ULL
538
539 static char ztest_dev_template[] = "%s/%s.%llua";
540 static char ztest_aux_template[] = "%s/%s.%s.%llu";
541 static ztest_shared_t *ztest_shared;
542
543 static spa_t *ztest_spa = NULL;
544 static ztest_ds_t *ztest_ds;
545
546 static kmutex_t ztest_vdev_lock;
547 static boolean_t ztest_device_removal_active = B_FALSE;
548 static boolean_t ztest_pool_scrubbed = B_FALSE;
549 static kmutex_t ztest_checkpoint_lock;
550
551 /*
552 * The ztest_name_lock protects the pool and dataset namespace used by
553 * the individual tests. To modify the namespace, consumers must grab
554 * this lock as writer. Grabbing the lock as reader will ensure that the
555 * namespace does not change while the lock is held.
556 */
557 static pthread_rwlock_t ztest_name_lock;
558
559 static boolean_t ztest_dump_core = B_TRUE;
560 static boolean_t ztest_exiting;
561
562 /* Global commit callback list */
563 static ztest_cb_list_t zcl;
564 /* Commit cb delay */
565 static uint64_t zc_min_txg_delay = UINT64_MAX;
566 static int zc_cb_counter = 0;
567
568 /*
569 * Minimum number of commit callbacks that need to be registered for us to check
570 * whether the minimum txg delay is acceptable.
571 */
572 #define ZTEST_COMMIT_CB_MIN_REG 100
573
574 /*
575 * If a number of txgs equal to this threshold have been created after a commit
576 * callback has been registered but not called, then we assume there is an
577 * implementation bug.
578 */
579 #define ZTEST_COMMIT_CB_THRESH (TXG_CONCURRENT_STATES + 1000)
580
581 enum ztest_object {
582 ZTEST_META_DNODE = 0,
583 ZTEST_DIROBJ,
584 ZTEST_OBJECTS
585 };
586
587 static __attribute__((noreturn)) void usage(boolean_t requested);
588 static int ztest_scrub_impl(spa_t *spa);
589
590 /*
591 * These libumem hooks provide a reasonable set of defaults for the allocator's
592 * debugging facilities.
593 */
594 const char *
_umem_debug_init(void)595 _umem_debug_init(void)
596 {
597 return ("default,verbose"); /* $UMEM_DEBUG setting */
598 }
599
600 const char *
_umem_logging_init(void)601 _umem_logging_init(void)
602 {
603 return ("fail,contents"); /* $UMEM_LOGGING setting */
604 }
605
606 static void
dump_debug_buffer(void)607 dump_debug_buffer(void)
608 {
609 ssize_t ret __attribute__((unused));
610
611 if (!ztest_opts.zo_dump_dbgmsg)
612 return;
613
614 /*
615 * We use write() instead of printf() so that this function
616 * is safe to call from a signal handler.
617 */
618 ret = write(STDERR_FILENO, "\n", 1);
619 zfs_dbgmsg_print(STDERR_FILENO, "ztest");
620 }
621
sig_handler(int signo)622 static void sig_handler(int signo)
623 {
624 struct sigaction action;
625
626 libspl_backtrace(STDERR_FILENO);
627 dump_debug_buffer();
628
629 /*
630 * Restore default action and re-raise signal so SIGSEGV and
631 * SIGABRT can trigger a core dump.
632 */
633 action.sa_handler = SIG_DFL;
634 sigemptyset(&action.sa_mask);
635 action.sa_flags = 0;
636 (void) sigaction(signo, &action, NULL);
637 raise(signo);
638 }
639
640 #define FATAL_MSG_SZ 1024
641
642 static const char *fatal_msg;
643
644 static __attribute__((format(printf, 2, 3))) __attribute__((noreturn)) void
fatal(int do_perror,const char * message,...)645 fatal(int do_perror, const char *message, ...)
646 {
647 va_list args;
648 int save_errno = errno;
649 char *buf;
650
651 (void) fflush(stdout);
652 buf = umem_alloc(FATAL_MSG_SZ, UMEM_NOFAIL);
653 if (buf == NULL)
654 goto out;
655
656 va_start(args, message);
657 (void) sprintf(buf, "ztest: ");
658 /* LINTED */
659 (void) vsprintf(buf + strlen(buf), message, args);
660 va_end(args);
661 if (do_perror) {
662 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf),
663 ": %s", strerror(save_errno));
664 }
665 (void) fprintf(stderr, "%s\n", buf);
666 fatal_msg = buf; /* to ease debugging */
667
668 out:
669 if (ztest_dump_core)
670 abort();
671 else
672 dump_debug_buffer();
673
674 exit(3);
675 }
676
677 static int
str2shift(const char * buf)678 str2shift(const char *buf)
679 {
680 const char *ends = "BKMGTPEZ";
681 int i;
682
683 if (buf[0] == '\0')
684 return (0);
685 for (i = 0; i < strlen(ends); i++) {
686 if (toupper(buf[0]) == ends[i])
687 break;
688 }
689 if (i == strlen(ends)) {
690 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n",
691 buf);
692 usage(B_FALSE);
693 }
694 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) {
695 return (10*i);
696 }
697 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf);
698 usage(B_FALSE);
699 }
700
701 static uint64_t
nicenumtoull(const char * buf)702 nicenumtoull(const char *buf)
703 {
704 char *end;
705 uint64_t val;
706
707 val = strtoull(buf, &end, 0);
708 if (end == buf) {
709 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf);
710 usage(B_FALSE);
711 } else if (end[0] == '.') {
712 double fval = strtod(buf, &end);
713 fval *= pow(2, str2shift(end));
714 /*
715 * UINT64_MAX is not exactly representable as a double.
716 * The closest representation is UINT64_MAX + 1, so we
717 * use a >= comparison instead of > for the bounds check.
718 */
719 if (fval >= (double)UINT64_MAX) {
720 (void) fprintf(stderr, "ztest: value too large: %s\n",
721 buf);
722 usage(B_FALSE);
723 }
724 val = (uint64_t)fval;
725 } else {
726 int shift = str2shift(end);
727 if (shift >= 64 || (val << shift) >> shift != val) {
728 (void) fprintf(stderr, "ztest: value too large: %s\n",
729 buf);
730 usage(B_FALSE);
731 }
732 val <<= shift;
733 }
734 return (val);
735 }
736
737 typedef struct ztest_option {
738 const char short_opt;
739 const char *long_opt;
740 const char *long_opt_param;
741 const char *comment;
742 unsigned int default_int;
743 const char *default_str;
744 } ztest_option_t;
745
746 /*
747 * The following option_table is used for generating the usage info as well as
748 * the long and short option information for calling getopt_long().
749 */
750 static ztest_option_t option_table[] = {
751 { 'v', "vdevs", "INTEGER", "Number of vdevs", DEFAULT_VDEV_COUNT,
752 NULL},
753 { 's', "vdev-size", "INTEGER", "Size of each vdev",
754 NO_DEFAULT, DEFAULT_VDEV_SIZE_STR},
755 { 'a', "alignment-shift", "INTEGER",
756 "Alignment shift; use 0 for random", DEFAULT_ASHIFT, NULL},
757 { 'm', "mirror-copies", "INTEGER", "Number of mirror copies",
758 DEFAULT_MIRRORS, NULL},
759 { 'r', "raid-disks", "INTEGER", "Number of raidz/draid disks",
760 DEFAULT_RAID_CHILDREN, NULL},
761 { 'R', "raid-parity", "INTEGER", "Raid parity",
762 DEFAULT_RAID_PARITY, NULL},
763 { 'K', "raid-kind", "raidz|eraidz|draid|random", "Raid kind",
764 NO_DEFAULT, "random"},
765 { 'D', "draid-data", "INTEGER", "Number of draid data drives",
766 DEFAULT_DRAID_DATA, NULL},
767 { 'S', "draid-spares", "INTEGER", "Number of draid spares",
768 DEFAULT_DRAID_SPARES, NULL},
769 { 'd', "datasets", "INTEGER", "Number of datasets",
770 DEFAULT_DATASETS_COUNT, NULL},
771 { 't', "threads", "INTEGER", "Number of ztest threads",
772 DEFAULT_THREADS, NULL},
773 { 'g', "gang-block-threshold", "INTEGER",
774 "Metaslab gang block threshold",
775 NO_DEFAULT, DEFAULT_FORCE_GANGING_STR},
776 { 'i', "init-count", "INTEGER", "Number of times to initialize pool",
777 DEFAULT_INITS, NULL},
778 { 'k', "kill-percentage", "INTEGER", "Kill percentage",
779 NO_DEFAULT, DEFAULT_KILLRATE_STR},
780 { 'p', "pool-name", "STRING", "Pool name",
781 NO_DEFAULT, DEFAULT_POOL},
782 { 'f', "vdev-file-directory", "PATH", "File directory for vdev files",
783 NO_DEFAULT, DEFAULT_VDEV_DIR},
784 { 'M', "multi-host", NULL,
785 "Multi-host; simulate pool imported on remote host",
786 NO_DEFAULT, NULL},
787 { 'E', "use-existing-pool", NULL,
788 "Use existing pool instead of creating new one", NO_DEFAULT, NULL},
789 { 'T', "run-time", "INTEGER", "Total run time",
790 NO_DEFAULT, DEFAULT_RUN_TIME_STR},
791 { 'P', "pass-time", "INTEGER", "Time per pass",
792 NO_DEFAULT, DEFAULT_PASS_TIME_STR},
793 { 'F', "freeze-loops", "INTEGER", "Max loops in spa_freeze()",
794 DEFAULT_MAX_LOOPS, NULL},
795 { 'B', "alt-ztest", "PATH", "Alternate ztest path",
796 NO_DEFAULT, NULL},
797 { 'C', "vdev-class-state", "on|off|random", "vdev class state",
798 NO_DEFAULT, "random"},
799 { 'X', "raidz-expansion", NULL,
800 "Perform a dedicated raidz expansion test",
801 NO_DEFAULT, NULL},
802 { 'o', "option", "\"OPTION=INTEGER\"",
803 "Set global variable to an unsigned 32-bit integer value",
804 NO_DEFAULT, NULL},
805 { 'G', "dump-debug-msg", NULL,
806 "Dump zfs_dbgmsg buffer before exiting due to an error",
807 NO_DEFAULT, NULL},
808 { 'V', "verbose", NULL,
809 "Verbose (use multiple times for ever more verbosity)",
810 NO_DEFAULT, NULL},
811 { 'h', "help", NULL, "Show this help",
812 NO_DEFAULT, NULL},
813 {0, 0, 0, 0, 0, 0}
814 };
815
816 static struct option *long_opts = NULL;
817 static char *short_opts = NULL;
818
819 static void
init_options(void)820 init_options(void)
821 {
822 ASSERT3P(long_opts, ==, NULL);
823 ASSERT3P(short_opts, ==, NULL);
824
825 int count = sizeof (option_table) / sizeof (option_table[0]);
826 long_opts = umem_alloc(sizeof (struct option) * count, UMEM_NOFAIL);
827
828 short_opts = umem_alloc(sizeof (char) * 2 * count, UMEM_NOFAIL);
829 int short_opt_index = 0;
830
831 for (int i = 0; i < count; i++) {
832 long_opts[i].val = option_table[i].short_opt;
833 long_opts[i].name = option_table[i].long_opt;
834 long_opts[i].has_arg = option_table[i].long_opt_param != NULL
835 ? required_argument : no_argument;
836 long_opts[i].flag = NULL;
837 short_opts[short_opt_index++] = option_table[i].short_opt;
838 if (option_table[i].long_opt_param != NULL) {
839 short_opts[short_opt_index++] = ':';
840 }
841 }
842 }
843
844 static void
fini_options(void)845 fini_options(void)
846 {
847 int count = sizeof (option_table) / sizeof (option_table[0]);
848
849 umem_free(long_opts, sizeof (struct option) * count);
850 umem_free(short_opts, sizeof (char) * 2 * count);
851
852 long_opts = NULL;
853 short_opts = NULL;
854 }
855
856 static __attribute__((noreturn)) void
usage(boolean_t requested)857 usage(boolean_t requested)
858 {
859 char option[80];
860 FILE *fp = requested ? stdout : stderr;
861
862 (void) fprintf(fp, "Usage: %s [OPTIONS...]\n", DEFAULT_POOL);
863 for (int i = 0; option_table[i].short_opt != 0; i++) {
864 if (option_table[i].long_opt_param != NULL) {
865 (void) sprintf(option, " -%c --%s=%s",
866 option_table[i].short_opt,
867 option_table[i].long_opt,
868 option_table[i].long_opt_param);
869 } else {
870 (void) sprintf(option, " -%c --%s",
871 option_table[i].short_opt,
872 option_table[i].long_opt);
873 }
874 (void) fprintf(fp, " %-43s%s", option,
875 option_table[i].comment);
876
877 if (option_table[i].long_opt_param != NULL) {
878 if (option_table[i].default_str != NULL) {
879 (void) fprintf(fp, " (default: %s)",
880 option_table[i].default_str);
881 } else if (option_table[i].default_int != NO_DEFAULT) {
882 (void) fprintf(fp, " (default: %u)",
883 option_table[i].default_int);
884 }
885 }
886 (void) fprintf(fp, "\n");
887 }
888 exit(requested ? 0 : 1);
889 }
890
891 static uint64_t
ztest_random(uint64_t range)892 ztest_random(uint64_t range)
893 {
894 uint64_t r;
895
896 ASSERT3S(ztest_fd_rand, >=, 0);
897
898 if (range == 0)
899 return (0);
900
901 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r))
902 fatal(B_TRUE, "short read from /dev/urandom");
903
904 return (r % range);
905 }
906
907 static void
ztest_parse_name_value(const char * input,ztest_shared_opts_t * zo)908 ztest_parse_name_value(const char *input, ztest_shared_opts_t *zo)
909 {
910 char name[32];
911 char *value;
912 int state = ZTEST_VDEV_CLASS_RND;
913
914 (void) strlcpy(name, input, sizeof (name));
915
916 value = strchr(name, '=');
917 if (value == NULL) {
918 (void) fprintf(stderr, "missing value in property=value "
919 "'-C' argument (%s)\n", input);
920 usage(B_FALSE);
921 }
922 *(value) = '\0';
923 value++;
924
925 if (strcmp(value, "on") == 0) {
926 state = ZTEST_VDEV_CLASS_ON;
927 } else if (strcmp(value, "off") == 0) {
928 state = ZTEST_VDEV_CLASS_OFF;
929 } else if (strcmp(value, "random") == 0) {
930 state = ZTEST_VDEV_CLASS_RND;
931 } else {
932 (void) fprintf(stderr, "invalid property value '%s'\n", value);
933 usage(B_FALSE);
934 }
935
936 if (strcmp(name, "special") == 0) {
937 zo->zo_special_vdevs = state;
938 } else {
939 (void) fprintf(stderr, "invalid property name '%s'\n", name);
940 usage(B_FALSE);
941 }
942 if (zo->zo_verbose >= 3)
943 (void) printf("%s vdev state is '%s'\n", name, value);
944 }
945
946 static void
process_options(int argc,char ** argv)947 process_options(int argc, char **argv)
948 {
949 char *path;
950 ztest_shared_opts_t *zo = &ztest_opts;
951
952 int opt;
953 uint64_t value;
954 const char *raid_kind = "random";
955
956 memcpy(zo, &ztest_opts_defaults, sizeof (*zo));
957
958 init_options();
959
960 while ((opt = getopt_long(argc, argv, short_opts, long_opts,
961 NULL)) != EOF) {
962 value = 0;
963 switch (opt) {
964 case 'v':
965 case 's':
966 case 'a':
967 case 'm':
968 case 'r':
969 case 'R':
970 case 'D':
971 case 'S':
972 case 'd':
973 case 't':
974 case 'g':
975 case 'i':
976 case 'k':
977 case 'T':
978 case 'P':
979 case 'F':
980 value = nicenumtoull(optarg);
981 }
982 switch (opt) {
983 case 'v':
984 zo->zo_vdevs = value;
985 break;
986 case 's':
987 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value);
988 break;
989 case 'a':
990 zo->zo_ashift = value;
991 break;
992 case 'm':
993 zo->zo_mirrors = value;
994 break;
995 case 'r':
996 zo->zo_raid_children = MAX(1, value);
997 break;
998 case 'R':
999 zo->zo_raid_parity = MIN(MAX(value, 1), 3);
1000 break;
1001 case 'K':
1002 raid_kind = optarg;
1003 break;
1004 case 'D':
1005 zo->zo_draid_data = MAX(1, value);
1006 break;
1007 case 'S':
1008 zo->zo_draid_spares = MAX(1, value);
1009 break;
1010 case 'd':
1011 zo->zo_datasets = MAX(1, value);
1012 break;
1013 case 't':
1014 zo->zo_threads = MAX(1, value);
1015 break;
1016 case 'g':
1017 zo->zo_metaslab_force_ganging =
1018 MAX(SPA_MINBLOCKSIZE << 1, value);
1019 break;
1020 case 'i':
1021 zo->zo_init = value;
1022 break;
1023 case 'k':
1024 zo->zo_killrate = value;
1025 break;
1026 case 'p':
1027 (void) strlcpy(zo->zo_pool, optarg,
1028 sizeof (zo->zo_pool));
1029 break;
1030 case 'f':
1031 path = realpath(optarg, NULL);
1032 if (path == NULL) {
1033 (void) fprintf(stderr, "error: %s: %s\n",
1034 optarg, strerror(errno));
1035 usage(B_FALSE);
1036 } else {
1037 (void) strlcpy(zo->zo_dir, path,
1038 sizeof (zo->zo_dir));
1039 free(path);
1040 }
1041 break;
1042 case 'M':
1043 zo->zo_mmp_test = 1;
1044 break;
1045 case 'V':
1046 zo->zo_verbose++;
1047 break;
1048 case 'X':
1049 zo->zo_raidz_expand_test = RAIDZ_EXPAND_REQUESTED;
1050 break;
1051 case 'E':
1052 zo->zo_init = 0;
1053 break;
1054 case 'T':
1055 zo->zo_time = value;
1056 break;
1057 case 'P':
1058 zo->zo_passtime = MAX(1, value);
1059 break;
1060 case 'F':
1061 zo->zo_maxloops = MAX(1, value);
1062 break;
1063 case 'B':
1064 (void) strlcpy(zo->zo_alt_ztest, optarg,
1065 sizeof (zo->zo_alt_ztest));
1066 break;
1067 case 'C':
1068 ztest_parse_name_value(optarg, zo);
1069 break;
1070 case 'o':
1071 if (zo->zo_gvars_count >= ZO_GVARS_MAX_COUNT) {
1072 (void) fprintf(stderr,
1073 "max global var count (%zu) exceeded\n",
1074 ZO_GVARS_MAX_COUNT);
1075 usage(B_FALSE);
1076 }
1077 char *v = zo->zo_gvars[zo->zo_gvars_count];
1078 if (strlcpy(v, optarg, ZO_GVARS_MAX_ARGLEN) >=
1079 ZO_GVARS_MAX_ARGLEN) {
1080 (void) fprintf(stderr,
1081 "global var option '%s' is too long\n",
1082 optarg);
1083 usage(B_FALSE);
1084 }
1085 zo->zo_gvars_count++;
1086 break;
1087 case 'G':
1088 zo->zo_dump_dbgmsg = 1;
1089 break;
1090 case 'h':
1091 usage(B_TRUE);
1092 break;
1093 case '?':
1094 default:
1095 usage(B_FALSE);
1096 break;
1097 }
1098 }
1099
1100 fini_options();
1101
1102 /* Force compatible options for raidz expansion run */
1103 if (zo->zo_raidz_expand_test == RAIDZ_EXPAND_REQUESTED) {
1104 zo->zo_mmp_test = 0;
1105 zo->zo_mirrors = 0;
1106 zo->zo_vdevs = 1;
1107 zo->zo_vdev_size = DEFAULT_VDEV_SIZE * 2;
1108 zo->zo_raid_do_expand = B_FALSE;
1109 raid_kind = "raidz";
1110 }
1111
1112 if (strcmp(raid_kind, "random") == 0) {
1113 switch (ztest_random(3)) {
1114 case 0:
1115 raid_kind = "raidz";
1116 break;
1117 case 1:
1118 raid_kind = "eraidz";
1119 break;
1120 case 2:
1121 raid_kind = "draid";
1122 break;
1123 }
1124
1125 if (ztest_opts.zo_verbose >= 3)
1126 (void) printf("choosing RAID type '%s'\n", raid_kind);
1127 }
1128
1129 if (strcmp(raid_kind, "draid") == 0) {
1130 uint64_t min_devsize;
1131
1132 /* With fewer disk use 256M, otherwise 128M is OK */
1133 min_devsize = (ztest_opts.zo_raid_children < 16) ?
1134 (256ULL << 20) : (128ULL << 20);
1135
1136 /* No top-level mirrors with dRAID for now */
1137 zo->zo_mirrors = 0;
1138
1139 /* Use more appropriate defaults for dRAID */
1140 if (zo->zo_vdevs == ztest_opts_defaults.zo_vdevs)
1141 zo->zo_vdevs = 1;
1142 if (zo->zo_raid_children ==
1143 ztest_opts_defaults.zo_raid_children)
1144 zo->zo_raid_children = 16;
1145 if (zo->zo_ashift < 12)
1146 zo->zo_ashift = 12;
1147 if (zo->zo_vdev_size < min_devsize)
1148 zo->zo_vdev_size = min_devsize;
1149
1150 if (zo->zo_draid_data + zo->zo_raid_parity >
1151 zo->zo_raid_children - zo->zo_draid_spares) {
1152 (void) fprintf(stderr, "error: too few draid "
1153 "children (%d) for stripe width (%d)\n",
1154 zo->zo_raid_children,
1155 zo->zo_draid_data + zo->zo_raid_parity);
1156 usage(B_FALSE);
1157 }
1158
1159 (void) strlcpy(zo->zo_raid_type, VDEV_TYPE_DRAID,
1160 sizeof (zo->zo_raid_type));
1161
1162 } else if (strcmp(raid_kind, "eraidz") == 0) {
1163 /* using eraidz (expandable raidz) */
1164 zo->zo_raid_do_expand = B_TRUE;
1165
1166 /* tests expect top-level to be raidz */
1167 zo->zo_mirrors = 0;
1168 zo->zo_vdevs = 1;
1169
1170 /* Make sure parity is less than data columns */
1171 zo->zo_raid_parity = MIN(zo->zo_raid_parity,
1172 zo->zo_raid_children - 1);
1173
1174 } else /* using raidz */ {
1175 ASSERT0(strcmp(raid_kind, "raidz"));
1176
1177 zo->zo_raid_parity = MIN(zo->zo_raid_parity,
1178 zo->zo_raid_children - 1);
1179 }
1180
1181 zo->zo_vdevtime =
1182 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs :
1183 UINT64_MAX >> 2);
1184
1185 if (*zo->zo_alt_ztest) {
1186 const char *invalid_what = "ztest";
1187 char *val = zo->zo_alt_ztest;
1188 if (0 != access(val, X_OK) ||
1189 (strrchr(val, '/') == NULL && (errno == EINVAL)))
1190 goto invalid;
1191
1192 int dirlen = strrchr(val, '/') - val;
1193 strlcpy(zo->zo_alt_libpath, val,
1194 MIN(sizeof (zo->zo_alt_libpath), dirlen + 1));
1195 invalid_what = "library path", val = zo->zo_alt_libpath;
1196 if (strrchr(val, '/') == NULL && (errno == EINVAL))
1197 goto invalid;
1198 *strrchr(val, '/') = '\0';
1199 strlcat(val, "/lib", sizeof (zo->zo_alt_libpath));
1200
1201 if (0 != access(zo->zo_alt_libpath, X_OK))
1202 goto invalid;
1203 return;
1204
1205 invalid:
1206 ztest_dump_core = B_FALSE;
1207 fatal(B_TRUE, "invalid alternate %s %s", invalid_what, val);
1208 }
1209 }
1210
1211 static void
ztest_kill(ztest_shared_t * zs)1212 ztest_kill(ztest_shared_t *zs)
1213 {
1214 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa));
1215 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa));
1216
1217 /*
1218 * Before we kill ourselves, make sure that the config is updated.
1219 * See comment above spa_write_cachefile().
1220 */
1221 if (raidz_expand_pause_point != RAIDZ_EXPAND_PAUSE_NONE) {
1222 if (mutex_tryenter(&spa_namespace_lock)) {
1223 spa_write_cachefile(ztest_spa, B_FALSE, B_FALSE,
1224 B_FALSE);
1225 mutex_exit(&spa_namespace_lock);
1226
1227 ztest_scratch_state->zs_raidz_scratch_verify_pause =
1228 raidz_expand_pause_point;
1229 } else {
1230 /*
1231 * Do not verify scratch object in case if
1232 * spa_namespace_lock cannot be acquired,
1233 * it can cause deadlock in spa_config_update().
1234 */
1235 raidz_expand_pause_point = RAIDZ_EXPAND_PAUSE_NONE;
1236
1237 return;
1238 }
1239 } else {
1240 mutex_enter(&spa_namespace_lock);
1241 spa_write_cachefile(ztest_spa, B_FALSE, B_FALSE, B_FALSE);
1242 mutex_exit(&spa_namespace_lock);
1243 }
1244
1245 (void) raise(SIGKILL);
1246 }
1247
1248 static void
ztest_record_enospc(const char * s)1249 ztest_record_enospc(const char *s)
1250 {
1251 (void) s;
1252 ztest_shared->zs_enospc_count++;
1253 }
1254
1255 static uint64_t
ztest_get_ashift(void)1256 ztest_get_ashift(void)
1257 {
1258 if (ztest_opts.zo_ashift == 0)
1259 return (SPA_MINBLOCKSHIFT + ztest_random(5));
1260 return (ztest_opts.zo_ashift);
1261 }
1262
1263 static boolean_t
ztest_is_draid_spare(const char * name)1264 ztest_is_draid_spare(const char *name)
1265 {
1266 uint64_t spare_id = 0, parity = 0, vdev_id = 0;
1267
1268 if (sscanf(name, VDEV_TYPE_DRAID "%"PRIu64"-%"PRIu64"-%"PRIu64"",
1269 &parity, &vdev_id, &spare_id) == 3) {
1270 return (B_TRUE);
1271 }
1272
1273 return (B_FALSE);
1274 }
1275
1276 static nvlist_t *
make_vdev_file(const char * path,const char * aux,const char * pool,size_t size,uint64_t ashift)1277 make_vdev_file(const char *path, const char *aux, const char *pool,
1278 size_t size, uint64_t ashift)
1279 {
1280 char *pathbuf = NULL;
1281 uint64_t vdev;
1282 nvlist_t *file;
1283 boolean_t draid_spare = B_FALSE;
1284
1285
1286 if (ashift == 0)
1287 ashift = ztest_get_ashift();
1288
1289 if (path == NULL) {
1290 pathbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
1291 path = pathbuf;
1292
1293 if (aux != NULL) {
1294 vdev = ztest_shared->zs_vdev_aux;
1295 (void) snprintf(pathbuf, MAXPATHLEN,
1296 ztest_aux_template, ztest_opts.zo_dir,
1297 pool == NULL ? ztest_opts.zo_pool : pool,
1298 aux, vdev);
1299 } else {
1300 vdev = ztest_shared->zs_vdev_next_leaf++;
1301 (void) snprintf(pathbuf, MAXPATHLEN,
1302 ztest_dev_template, ztest_opts.zo_dir,
1303 pool == NULL ? ztest_opts.zo_pool : pool, vdev);
1304 }
1305 } else {
1306 draid_spare = ztest_is_draid_spare(path);
1307 }
1308
1309 if (size != 0 && !draid_spare) {
1310 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
1311 if (fd == -1)
1312 fatal(B_TRUE, "can't open %s", path);
1313 if (ftruncate(fd, size) != 0)
1314 fatal(B_TRUE, "can't ftruncate %s", path);
1315 (void) close(fd);
1316 }
1317
1318 file = fnvlist_alloc();
1319 fnvlist_add_string(file, ZPOOL_CONFIG_TYPE,
1320 draid_spare ? VDEV_TYPE_DRAID_SPARE : VDEV_TYPE_FILE);
1321 fnvlist_add_string(file, ZPOOL_CONFIG_PATH, path);
1322 fnvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift);
1323 umem_free(pathbuf, MAXPATHLEN);
1324
1325 return (file);
1326 }
1327
1328 static nvlist_t *
make_vdev_raid(const char * path,const char * aux,const char * pool,size_t size,uint64_t ashift,int r)1329 make_vdev_raid(const char *path, const char *aux, const char *pool, size_t size,
1330 uint64_t ashift, int r)
1331 {
1332 nvlist_t *raid, **child;
1333 int c;
1334
1335 if (r < 2)
1336 return (make_vdev_file(path, aux, pool, size, ashift));
1337 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL);
1338
1339 for (c = 0; c < r; c++)
1340 child[c] = make_vdev_file(path, aux, pool, size, ashift);
1341
1342 raid = fnvlist_alloc();
1343 fnvlist_add_string(raid, ZPOOL_CONFIG_TYPE,
1344 ztest_opts.zo_raid_type);
1345 fnvlist_add_uint64(raid, ZPOOL_CONFIG_NPARITY,
1346 ztest_opts.zo_raid_parity);
1347 fnvlist_add_nvlist_array(raid, ZPOOL_CONFIG_CHILDREN,
1348 (const nvlist_t **)child, r);
1349
1350 if (strcmp(ztest_opts.zo_raid_type, VDEV_TYPE_DRAID) == 0) {
1351 uint64_t ndata = ztest_opts.zo_draid_data;
1352 uint64_t nparity = ztest_opts.zo_raid_parity;
1353 uint64_t nspares = ztest_opts.zo_draid_spares;
1354 uint64_t children = ztest_opts.zo_raid_children;
1355 uint64_t ngroups = 1;
1356
1357 /*
1358 * Calculate the minimum number of groups required to fill a
1359 * slice. This is the LCM of the stripe width (data + parity)
1360 * and the number of data drives (children - spares).
1361 */
1362 while (ngroups * (ndata + nparity) % (children - nspares) != 0)
1363 ngroups++;
1364
1365 /* Store the basic dRAID configuration. */
1366 fnvlist_add_uint64(raid, ZPOOL_CONFIG_DRAID_NDATA, ndata);
1367 fnvlist_add_uint64(raid, ZPOOL_CONFIG_DRAID_NSPARES, nspares);
1368 fnvlist_add_uint64(raid, ZPOOL_CONFIG_DRAID_NGROUPS, ngroups);
1369 }
1370
1371 for (c = 0; c < r; c++)
1372 fnvlist_free(child[c]);
1373
1374 umem_free(child, r * sizeof (nvlist_t *));
1375
1376 return (raid);
1377 }
1378
1379 static nvlist_t *
make_vdev_mirror(const char * path,const char * aux,const char * pool,size_t size,uint64_t ashift,int r,int m)1380 make_vdev_mirror(const char *path, const char *aux, const char *pool,
1381 size_t size, uint64_t ashift, int r, int m)
1382 {
1383 nvlist_t *mirror, **child;
1384 int c;
1385
1386 if (m < 1)
1387 return (make_vdev_raid(path, aux, pool, size, ashift, r));
1388
1389 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL);
1390
1391 for (c = 0; c < m; c++)
1392 child[c] = make_vdev_raid(path, aux, pool, size, ashift, r);
1393
1394 mirror = fnvlist_alloc();
1395 fnvlist_add_string(mirror, ZPOOL_CONFIG_TYPE, VDEV_TYPE_MIRROR);
1396 fnvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN,
1397 (const nvlist_t **)child, m);
1398
1399 for (c = 0; c < m; c++)
1400 fnvlist_free(child[c]);
1401
1402 umem_free(child, m * sizeof (nvlist_t *));
1403
1404 return (mirror);
1405 }
1406
1407 static nvlist_t *
make_vdev_root(const char * path,const char * aux,const char * pool,size_t size,uint64_t ashift,const char * class,int r,int m,int t)1408 make_vdev_root(const char *path, const char *aux, const char *pool, size_t size,
1409 uint64_t ashift, const char *class, int r, int m, int t)
1410 {
1411 nvlist_t *root, **child;
1412 int c;
1413 boolean_t log;
1414
1415 ASSERT3S(t, >, 0);
1416
1417 log = (class != NULL && strcmp(class, "log") == 0);
1418
1419 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL);
1420
1421 for (c = 0; c < t; c++) {
1422 child[c] = make_vdev_mirror(path, aux, pool, size, ashift,
1423 r, m);
1424 fnvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG, log);
1425
1426 if (class != NULL && class[0] != '\0') {
1427 ASSERT(m > 1 || log); /* expecting a mirror */
1428 fnvlist_add_string(child[c],
1429 ZPOOL_CONFIG_ALLOCATION_BIAS, class);
1430 }
1431 }
1432
1433 root = fnvlist_alloc();
1434 fnvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT);
1435 fnvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN,
1436 (const nvlist_t **)child, t);
1437
1438 for (c = 0; c < t; c++)
1439 fnvlist_free(child[c]);
1440
1441 umem_free(child, t * sizeof (nvlist_t *));
1442
1443 return (root);
1444 }
1445
1446 /*
1447 * Find a random spa version. Returns back a random spa version in the
1448 * range [initial_version, SPA_VERSION_FEATURES].
1449 */
1450 static uint64_t
ztest_random_spa_version(uint64_t initial_version)1451 ztest_random_spa_version(uint64_t initial_version)
1452 {
1453 uint64_t version = initial_version;
1454
1455 if (version <= SPA_VERSION_BEFORE_FEATURES) {
1456 version = version +
1457 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1);
1458 }
1459
1460 if (version > SPA_VERSION_BEFORE_FEATURES)
1461 version = SPA_VERSION_FEATURES;
1462
1463 ASSERT(SPA_VERSION_IS_SUPPORTED(version));
1464 return (version);
1465 }
1466
1467 static int
ztest_random_blocksize(void)1468 ztest_random_blocksize(void)
1469 {
1470 ASSERT3U(ztest_spa->spa_max_ashift, !=, 0);
1471
1472 /*
1473 * Choose a block size >= the ashift.
1474 * If the SPA supports new MAXBLOCKSIZE, test up to 1MB blocks.
1475 */
1476 int maxbs = SPA_OLD_MAXBLOCKSHIFT;
1477 if (spa_maxblocksize(ztest_spa) == SPA_MAXBLOCKSIZE)
1478 maxbs = 20;
1479 uint64_t block_shift =
1480 ztest_random(maxbs - ztest_spa->spa_max_ashift + 1);
1481 return (1 << (SPA_MINBLOCKSHIFT + block_shift));
1482 }
1483
1484 static int
ztest_random_dnodesize(void)1485 ztest_random_dnodesize(void)
1486 {
1487 int slots;
1488 int max_slots = spa_maxdnodesize(ztest_spa) >> DNODE_SHIFT;
1489
1490 if (max_slots == DNODE_MIN_SLOTS)
1491 return (DNODE_MIN_SIZE);
1492
1493 /*
1494 * Weight the random distribution more heavily toward smaller
1495 * dnode sizes since that is more likely to reflect real-world
1496 * usage.
1497 */
1498 ASSERT3U(max_slots, >, 4);
1499 switch (ztest_random(10)) {
1500 case 0:
1501 slots = 5 + ztest_random(max_slots - 4);
1502 break;
1503 case 1 ... 4:
1504 slots = 2 + ztest_random(3);
1505 break;
1506 default:
1507 slots = 1;
1508 break;
1509 }
1510
1511 return (slots << DNODE_SHIFT);
1512 }
1513
1514 static int
ztest_random_ibshift(void)1515 ztest_random_ibshift(void)
1516 {
1517 return (DN_MIN_INDBLKSHIFT +
1518 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1));
1519 }
1520
1521 static uint64_t
ztest_random_vdev_top(spa_t * spa,boolean_t log_ok)1522 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok)
1523 {
1524 uint64_t top;
1525 vdev_t *rvd = spa->spa_root_vdev;
1526 vdev_t *tvd;
1527
1528 ASSERT3U(spa_config_held(spa, SCL_ALL, RW_READER), !=, 0);
1529
1530 do {
1531 top = ztest_random(rvd->vdev_children);
1532 tvd = rvd->vdev_child[top];
1533 } while (!vdev_is_concrete(tvd) || (tvd->vdev_islog && !log_ok) ||
1534 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL);
1535
1536 return (top);
1537 }
1538
1539 static uint64_t
ztest_random_dsl_prop(zfs_prop_t prop)1540 ztest_random_dsl_prop(zfs_prop_t prop)
1541 {
1542 uint64_t value;
1543
1544 do {
1545 value = zfs_prop_random_value(prop, ztest_random(-1ULL));
1546 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF);
1547
1548 return (value);
1549 }
1550
1551 static int
ztest_dsl_prop_set_uint64(char * osname,zfs_prop_t prop,uint64_t value,boolean_t inherit)1552 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value,
1553 boolean_t inherit)
1554 {
1555 const char *propname = zfs_prop_to_name(prop);
1556 const char *valname;
1557 char *setpoint;
1558 uint64_t curval;
1559 int error;
1560
1561 error = dsl_prop_set_int(osname, propname,
1562 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value);
1563
1564 if (error == ENOSPC) {
1565 ztest_record_enospc(FTAG);
1566 return (error);
1567 }
1568 ASSERT0(error);
1569
1570 setpoint = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
1571 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint));
1572
1573 if (ztest_opts.zo_verbose >= 6) {
1574 int err;
1575
1576 err = zfs_prop_index_to_string(prop, curval, &valname);
1577 if (err)
1578 (void) printf("%s %s = %llu at '%s'\n", osname,
1579 propname, (unsigned long long)curval, setpoint);
1580 else
1581 (void) printf("%s %s = %s at '%s'\n",
1582 osname, propname, valname, setpoint);
1583 }
1584 umem_free(setpoint, MAXPATHLEN);
1585
1586 return (error);
1587 }
1588
1589 static int
ztest_spa_prop_set_uint64(zpool_prop_t prop,uint64_t value)1590 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value)
1591 {
1592 spa_t *spa = ztest_spa;
1593 nvlist_t *props = NULL;
1594 int error;
1595
1596 props = fnvlist_alloc();
1597 fnvlist_add_uint64(props, zpool_prop_to_name(prop), value);
1598
1599 error = spa_prop_set(spa, props);
1600
1601 fnvlist_free(props);
1602
1603 if (error == ENOSPC) {
1604 ztest_record_enospc(FTAG);
1605 return (error);
1606 }
1607 ASSERT0(error);
1608
1609 return (error);
1610 }
1611
1612 static int
ztest_dmu_objset_own(const char * name,dmu_objset_type_t type,boolean_t readonly,boolean_t decrypt,const void * tag,objset_t ** osp)1613 ztest_dmu_objset_own(const char *name, dmu_objset_type_t type,
1614 boolean_t readonly, boolean_t decrypt, const void *tag, objset_t **osp)
1615 {
1616 int err;
1617 char *cp = NULL;
1618 char ddname[ZFS_MAX_DATASET_NAME_LEN];
1619
1620 strlcpy(ddname, name, sizeof (ddname));
1621 cp = strchr(ddname, '@');
1622 if (cp != NULL)
1623 *cp = '\0';
1624
1625 err = dmu_objset_own(name, type, readonly, decrypt, tag, osp);
1626 while (decrypt && err == EACCES) {
1627 dsl_crypto_params_t *dcp;
1628 nvlist_t *crypto_args = fnvlist_alloc();
1629
1630 fnvlist_add_uint8_array(crypto_args, "wkeydata",
1631 (uint8_t *)ztest_wkeydata, WRAPPING_KEY_LEN);
1632 VERIFY0(dsl_crypto_params_create_nvlist(DCP_CMD_NONE, NULL,
1633 crypto_args, &dcp));
1634 err = spa_keystore_load_wkey(ddname, dcp, B_FALSE);
1635 /*
1636 * Note: if there was an error loading, the wkey was not
1637 * consumed, and needs to be freed.
1638 */
1639 dsl_crypto_params_free(dcp, (err != 0));
1640 fnvlist_free(crypto_args);
1641
1642 if (err == EINVAL) {
1643 /*
1644 * We couldn't load a key for this dataset so try
1645 * the parent. This loop will eventually hit the
1646 * encryption root since ztest only makes clones
1647 * as children of their origin datasets.
1648 */
1649 cp = strrchr(ddname, '/');
1650 if (cp == NULL)
1651 return (err);
1652
1653 *cp = '\0';
1654 err = EACCES;
1655 continue;
1656 } else if (err != 0) {
1657 break;
1658 }
1659
1660 err = dmu_objset_own(name, type, readonly, decrypt, tag, osp);
1661 break;
1662 }
1663
1664 return (err);
1665 }
1666
1667 static void
ztest_rll_init(rll_t * rll)1668 ztest_rll_init(rll_t *rll)
1669 {
1670 rll->rll_writer = NULL;
1671 rll->rll_readers = 0;
1672 mutex_init(&rll->rll_lock, NULL, MUTEX_DEFAULT, NULL);
1673 cv_init(&rll->rll_cv, NULL, CV_DEFAULT, NULL);
1674 }
1675
1676 static void
ztest_rll_destroy(rll_t * rll)1677 ztest_rll_destroy(rll_t *rll)
1678 {
1679 ASSERT3P(rll->rll_writer, ==, NULL);
1680 ASSERT0(rll->rll_readers);
1681 mutex_destroy(&rll->rll_lock);
1682 cv_destroy(&rll->rll_cv);
1683 }
1684
1685 static void
ztest_rll_lock(rll_t * rll,rl_type_t type)1686 ztest_rll_lock(rll_t *rll, rl_type_t type)
1687 {
1688 mutex_enter(&rll->rll_lock);
1689
1690 if (type == ZTRL_READER) {
1691 while (rll->rll_writer != NULL)
1692 (void) cv_wait(&rll->rll_cv, &rll->rll_lock);
1693 rll->rll_readers++;
1694 } else {
1695 while (rll->rll_writer != NULL || rll->rll_readers)
1696 (void) cv_wait(&rll->rll_cv, &rll->rll_lock);
1697 rll->rll_writer = curthread;
1698 }
1699
1700 mutex_exit(&rll->rll_lock);
1701 }
1702
1703 static void
ztest_rll_unlock(rll_t * rll)1704 ztest_rll_unlock(rll_t *rll)
1705 {
1706 mutex_enter(&rll->rll_lock);
1707
1708 if (rll->rll_writer) {
1709 ASSERT0(rll->rll_readers);
1710 rll->rll_writer = NULL;
1711 } else {
1712 ASSERT3S(rll->rll_readers, >, 0);
1713 ASSERT3P(rll->rll_writer, ==, NULL);
1714 rll->rll_readers--;
1715 }
1716
1717 if (rll->rll_writer == NULL && rll->rll_readers == 0)
1718 cv_broadcast(&rll->rll_cv);
1719
1720 mutex_exit(&rll->rll_lock);
1721 }
1722
1723 static void
ztest_object_lock(ztest_ds_t * zd,uint64_t object,rl_type_t type)1724 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type)
1725 {
1726 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1727
1728 ztest_rll_lock(rll, type);
1729 }
1730
1731 static void
ztest_object_unlock(ztest_ds_t * zd,uint64_t object)1732 ztest_object_unlock(ztest_ds_t *zd, uint64_t object)
1733 {
1734 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1735
1736 ztest_rll_unlock(rll);
1737 }
1738
1739 static rl_t *
ztest_range_lock(ztest_ds_t * zd,uint64_t object,uint64_t offset,uint64_t size,rl_type_t type)1740 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset,
1741 uint64_t size, rl_type_t type)
1742 {
1743 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1));
1744 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)];
1745 rl_t *rl;
1746
1747 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL);
1748 rl->rl_object = object;
1749 rl->rl_offset = offset;
1750 rl->rl_size = size;
1751 rl->rl_lock = rll;
1752
1753 ztest_rll_lock(rll, type);
1754
1755 return (rl);
1756 }
1757
1758 static void
ztest_range_unlock(rl_t * rl)1759 ztest_range_unlock(rl_t *rl)
1760 {
1761 rll_t *rll = rl->rl_lock;
1762
1763 ztest_rll_unlock(rll);
1764
1765 umem_free(rl, sizeof (*rl));
1766 }
1767
1768 static void
ztest_zd_init(ztest_ds_t * zd,ztest_shared_ds_t * szd,objset_t * os)1769 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os)
1770 {
1771 zd->zd_os = os;
1772 zd->zd_zilog = dmu_objset_zil(os);
1773 zd->zd_shared = szd;
1774 dmu_objset_name(os, zd->zd_name);
1775 int l;
1776
1777 if (zd->zd_shared != NULL)
1778 zd->zd_shared->zd_seq = 0;
1779
1780 VERIFY0(pthread_rwlock_init(&zd->zd_zilog_lock, NULL));
1781 mutex_init(&zd->zd_dirobj_lock, NULL, MUTEX_DEFAULT, NULL);
1782
1783 for (l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1784 ztest_rll_init(&zd->zd_object_lock[l]);
1785
1786 for (l = 0; l < ZTEST_RANGE_LOCKS; l++)
1787 ztest_rll_init(&zd->zd_range_lock[l]);
1788 }
1789
1790 static void
ztest_zd_fini(ztest_ds_t * zd)1791 ztest_zd_fini(ztest_ds_t *zd)
1792 {
1793 int l;
1794
1795 mutex_destroy(&zd->zd_dirobj_lock);
1796 (void) pthread_rwlock_destroy(&zd->zd_zilog_lock);
1797
1798 for (l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1799 ztest_rll_destroy(&zd->zd_object_lock[l]);
1800
1801 for (l = 0; l < ZTEST_RANGE_LOCKS; l++)
1802 ztest_rll_destroy(&zd->zd_range_lock[l]);
1803 }
1804
1805 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT)
1806
1807 static uint64_t
ztest_tx_assign(dmu_tx_t * tx,uint64_t txg_how,const char * tag)1808 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag)
1809 {
1810 uint64_t txg;
1811 int error;
1812
1813 /*
1814 * Attempt to assign tx to some transaction group.
1815 */
1816 error = dmu_tx_assign(tx, txg_how);
1817 if (error) {
1818 if (error == ERESTART) {
1819 ASSERT3U(txg_how, ==, TXG_NOWAIT);
1820 dmu_tx_wait(tx);
1821 } else {
1822 ASSERT3U(error, ==, ENOSPC);
1823 ztest_record_enospc(tag);
1824 }
1825 dmu_tx_abort(tx);
1826 return (0);
1827 }
1828 txg = dmu_tx_get_txg(tx);
1829 ASSERT3U(txg, !=, 0);
1830 return (txg);
1831 }
1832
1833 static void
ztest_bt_generate(ztest_block_tag_t * bt,objset_t * os,uint64_t object,uint64_t dnodesize,uint64_t offset,uint64_t gen,uint64_t txg,uint64_t crtxg)1834 ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1835 uint64_t dnodesize, uint64_t offset, uint64_t gen, uint64_t txg,
1836 uint64_t crtxg)
1837 {
1838 bt->bt_magic = BT_MAGIC;
1839 bt->bt_objset = dmu_objset_id(os);
1840 bt->bt_object = object;
1841 bt->bt_dnodesize = dnodesize;
1842 bt->bt_offset = offset;
1843 bt->bt_gen = gen;
1844 bt->bt_txg = txg;
1845 bt->bt_crtxg = crtxg;
1846 }
1847
1848 static void
ztest_bt_verify(ztest_block_tag_t * bt,objset_t * os,uint64_t object,uint64_t dnodesize,uint64_t offset,uint64_t gen,uint64_t txg,uint64_t crtxg)1849 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1850 uint64_t dnodesize, uint64_t offset, uint64_t gen, uint64_t txg,
1851 uint64_t crtxg)
1852 {
1853 ASSERT3U(bt->bt_magic, ==, BT_MAGIC);
1854 ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os));
1855 ASSERT3U(bt->bt_object, ==, object);
1856 ASSERT3U(bt->bt_dnodesize, ==, dnodesize);
1857 ASSERT3U(bt->bt_offset, ==, offset);
1858 ASSERT3U(bt->bt_gen, <=, gen);
1859 ASSERT3U(bt->bt_txg, <=, txg);
1860 ASSERT3U(bt->bt_crtxg, ==, crtxg);
1861 }
1862
1863 static ztest_block_tag_t *
ztest_bt_bonus(dmu_buf_t * db)1864 ztest_bt_bonus(dmu_buf_t *db)
1865 {
1866 dmu_object_info_t doi;
1867 ztest_block_tag_t *bt;
1868
1869 dmu_object_info_from_db(db, &doi);
1870 ASSERT3U(doi.doi_bonus_size, <=, db->db_size);
1871 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt));
1872 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt));
1873
1874 return (bt);
1875 }
1876
1877 /*
1878 * Generate a token to fill up unused bonus buffer space. Try to make
1879 * it unique to the object, generation, and offset to verify that data
1880 * is not getting overwritten by data from other dnodes.
1881 */
1882 #define ZTEST_BONUS_FILL_TOKEN(obj, ds, gen, offset) \
1883 (((ds) << 48) | ((gen) << 32) | ((obj) << 8) | (offset))
1884
1885 /*
1886 * Fill up the unused bonus buffer region before the block tag with a
1887 * verifiable pattern. Filling the whole bonus area with non-zero data
1888 * helps ensure that all dnode traversal code properly skips the
1889 * interior regions of large dnodes.
1890 */
1891 static void
ztest_fill_unused_bonus(dmu_buf_t * db,void * end,uint64_t obj,objset_t * os,uint64_t gen)1892 ztest_fill_unused_bonus(dmu_buf_t *db, void *end, uint64_t obj,
1893 objset_t *os, uint64_t gen)
1894 {
1895 uint64_t *bonusp;
1896
1897 ASSERT(IS_P2ALIGNED((char *)end - (char *)db->db_data, 8));
1898
1899 for (bonusp = db->db_data; bonusp < (uint64_t *)end; bonusp++) {
1900 uint64_t token = ZTEST_BONUS_FILL_TOKEN(obj, dmu_objset_id(os),
1901 gen, bonusp - (uint64_t *)db->db_data);
1902 *bonusp = token;
1903 }
1904 }
1905
1906 /*
1907 * Verify that the unused area of a bonus buffer is filled with the
1908 * expected tokens.
1909 */
1910 static void
ztest_verify_unused_bonus(dmu_buf_t * db,void * end,uint64_t obj,objset_t * os,uint64_t gen)1911 ztest_verify_unused_bonus(dmu_buf_t *db, void *end, uint64_t obj,
1912 objset_t *os, uint64_t gen)
1913 {
1914 uint64_t *bonusp;
1915
1916 for (bonusp = db->db_data; bonusp < (uint64_t *)end; bonusp++) {
1917 uint64_t token = ZTEST_BONUS_FILL_TOKEN(obj, dmu_objset_id(os),
1918 gen, bonusp - (uint64_t *)db->db_data);
1919 VERIFY3U(*bonusp, ==, token);
1920 }
1921 }
1922
1923 /*
1924 * ZIL logging ops
1925 */
1926
1927 #define lrz_type lr_mode
1928 #define lrz_blocksize lr_uid
1929 #define lrz_ibshift lr_gid
1930 #define lrz_bonustype lr_rdev
1931 #define lrz_dnodesize lr_crtime[1]
1932
1933 static void
ztest_log_create(ztest_ds_t * zd,dmu_tx_t * tx,lr_create_t * lr)1934 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr)
1935 {
1936 char *name = (void *)(lr + 1); /* name follows lr */
1937 size_t namesize = strlen(name) + 1;
1938 itx_t *itx;
1939
1940 if (zil_replaying(zd->zd_zilog, tx))
1941 return;
1942
1943 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize);
1944 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
1945 sizeof (*lr) + namesize - sizeof (lr_t));
1946
1947 zil_itx_assign(zd->zd_zilog, itx, tx);
1948 }
1949
1950 static void
ztest_log_remove(ztest_ds_t * zd,dmu_tx_t * tx,lr_remove_t * lr,uint64_t object)1951 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object)
1952 {
1953 char *name = (void *)(lr + 1); /* name follows lr */
1954 size_t namesize = strlen(name) + 1;
1955 itx_t *itx;
1956
1957 if (zil_replaying(zd->zd_zilog, tx))
1958 return;
1959
1960 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize);
1961 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
1962 sizeof (*lr) + namesize - sizeof (lr_t));
1963
1964 itx->itx_oid = object;
1965 zil_itx_assign(zd->zd_zilog, itx, tx);
1966 }
1967
1968 static void
ztest_log_write(ztest_ds_t * zd,dmu_tx_t * tx,lr_write_t * lr)1969 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr)
1970 {
1971 itx_t *itx;
1972 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES);
1973
1974 if (zil_replaying(zd->zd_zilog, tx))
1975 return;
1976
1977 if (lr->lr_length > zil_max_log_data(zd->zd_zilog, sizeof (lr_write_t)))
1978 write_state = WR_INDIRECT;
1979
1980 itx = zil_itx_create(TX_WRITE,
1981 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0));
1982
1983 if (write_state == WR_COPIED &&
1984 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length,
1985 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) {
1986 zil_itx_destroy(itx);
1987 itx = zil_itx_create(TX_WRITE, sizeof (*lr));
1988 write_state = WR_NEED_COPY;
1989 }
1990 itx->itx_private = zd;
1991 itx->itx_wr_state = write_state;
1992 itx->itx_sync = (ztest_random(8) == 0);
1993
1994 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
1995 sizeof (*lr) - sizeof (lr_t));
1996
1997 zil_itx_assign(zd->zd_zilog, itx, tx);
1998 }
1999
2000 static void
ztest_log_truncate(ztest_ds_t * zd,dmu_tx_t * tx,lr_truncate_t * lr)2001 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr)
2002 {
2003 itx_t *itx;
2004
2005 if (zil_replaying(zd->zd_zilog, tx))
2006 return;
2007
2008 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr));
2009 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
2010 sizeof (*lr) - sizeof (lr_t));
2011
2012 itx->itx_sync = B_FALSE;
2013 zil_itx_assign(zd->zd_zilog, itx, tx);
2014 }
2015
2016 static void
ztest_log_setattr(ztest_ds_t * zd,dmu_tx_t * tx,lr_setattr_t * lr)2017 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr)
2018 {
2019 itx_t *itx;
2020
2021 if (zil_replaying(zd->zd_zilog, tx))
2022 return;
2023
2024 itx = zil_itx_create(TX_SETATTR, sizeof (*lr));
2025 memcpy(&itx->itx_lr + 1, &lr->lr_common + 1,
2026 sizeof (*lr) - sizeof (lr_t));
2027
2028 itx->itx_sync = B_FALSE;
2029 zil_itx_assign(zd->zd_zilog, itx, tx);
2030 }
2031
2032 /*
2033 * ZIL replay ops
2034 */
2035 static int
ztest_replay_create(void * arg1,void * arg2,boolean_t byteswap)2036 ztest_replay_create(void *arg1, void *arg2, boolean_t byteswap)
2037 {
2038 ztest_ds_t *zd = arg1;
2039 lr_create_t *lr = arg2;
2040 char *name = (void *)(lr + 1); /* name follows lr */
2041 objset_t *os = zd->zd_os;
2042 ztest_block_tag_t *bbt;
2043 dmu_buf_t *db;
2044 dmu_tx_t *tx;
2045 uint64_t txg;
2046 int error = 0;
2047 int bonuslen;
2048
2049 if (byteswap)
2050 byteswap_uint64_array(lr, sizeof (*lr));
2051
2052 ASSERT3U(lr->lr_doid, ==, ZTEST_DIROBJ);
2053 ASSERT3S(name[0], !=, '\0');
2054
2055 tx = dmu_tx_create(os);
2056
2057 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name);
2058
2059 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
2060 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL);
2061 } else {
2062 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
2063 }
2064
2065 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2066 if (txg == 0)
2067 return (ENOSPC);
2068
2069 ASSERT3U(dmu_objset_zil(os)->zl_replay, ==, !!lr->lr_foid);
2070 bonuslen = DN_BONUS_SIZE(lr->lrz_dnodesize);
2071
2072 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
2073 if (lr->lr_foid == 0) {
2074 lr->lr_foid = zap_create_dnsize(os,
2075 lr->lrz_type, lr->lrz_bonustype,
2076 bonuslen, lr->lrz_dnodesize, tx);
2077 } else {
2078 error = zap_create_claim_dnsize(os, lr->lr_foid,
2079 lr->lrz_type, lr->lrz_bonustype,
2080 bonuslen, lr->lrz_dnodesize, tx);
2081 }
2082 } else {
2083 if (lr->lr_foid == 0) {
2084 lr->lr_foid = dmu_object_alloc_dnsize(os,
2085 lr->lrz_type, 0, lr->lrz_bonustype,
2086 bonuslen, lr->lrz_dnodesize, tx);
2087 } else {
2088 error = dmu_object_claim_dnsize(os, lr->lr_foid,
2089 lr->lrz_type, 0, lr->lrz_bonustype,
2090 bonuslen, lr->lrz_dnodesize, tx);
2091 }
2092 }
2093
2094 if (error) {
2095 ASSERT3U(error, ==, EEXIST);
2096 ASSERT(zd->zd_zilog->zl_replay);
2097 dmu_tx_commit(tx);
2098 return (error);
2099 }
2100
2101 ASSERT3U(lr->lr_foid, !=, 0);
2102
2103 if (lr->lrz_type != DMU_OT_ZAP_OTHER)
2104 VERIFY0(dmu_object_set_blocksize(os, lr->lr_foid,
2105 lr->lrz_blocksize, lr->lrz_ibshift, tx));
2106
2107 VERIFY0(dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
2108 bbt = ztest_bt_bonus(db);
2109 dmu_buf_will_dirty(db, tx);
2110 ztest_bt_generate(bbt, os, lr->lr_foid, lr->lrz_dnodesize, -1ULL,
2111 lr->lr_gen, txg, txg);
2112 ztest_fill_unused_bonus(db, bbt, lr->lr_foid, os, lr->lr_gen);
2113 dmu_buf_rele(db, FTAG);
2114
2115 VERIFY0(zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1,
2116 &lr->lr_foid, tx));
2117
2118 (void) ztest_log_create(zd, tx, lr);
2119
2120 dmu_tx_commit(tx);
2121
2122 return (0);
2123 }
2124
2125 static int
ztest_replay_remove(void * arg1,void * arg2,boolean_t byteswap)2126 ztest_replay_remove(void *arg1, void *arg2, boolean_t byteswap)
2127 {
2128 ztest_ds_t *zd = arg1;
2129 lr_remove_t *lr = arg2;
2130 char *name = (void *)(lr + 1); /* name follows lr */
2131 objset_t *os = zd->zd_os;
2132 dmu_object_info_t doi;
2133 dmu_tx_t *tx;
2134 uint64_t object, txg;
2135
2136 if (byteswap)
2137 byteswap_uint64_array(lr, sizeof (*lr));
2138
2139 ASSERT3U(lr->lr_doid, ==, ZTEST_DIROBJ);
2140 ASSERT3S(name[0], !=, '\0');
2141
2142 VERIFY0(
2143 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
2144 ASSERT3U(object, !=, 0);
2145
2146 ztest_object_lock(zd, object, ZTRL_WRITER);
2147
2148 VERIFY0(dmu_object_info(os, object, &doi));
2149
2150 tx = dmu_tx_create(os);
2151
2152 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name);
2153 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
2154
2155 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2156 if (txg == 0) {
2157 ztest_object_unlock(zd, object);
2158 return (ENOSPC);
2159 }
2160
2161 if (doi.doi_type == DMU_OT_ZAP_OTHER) {
2162 VERIFY0(zap_destroy(os, object, tx));
2163 } else {
2164 VERIFY0(dmu_object_free(os, object, tx));
2165 }
2166
2167 VERIFY0(zap_remove(os, lr->lr_doid, name, tx));
2168
2169 (void) ztest_log_remove(zd, tx, lr, object);
2170
2171 dmu_tx_commit(tx);
2172
2173 ztest_object_unlock(zd, object);
2174
2175 return (0);
2176 }
2177
2178 static int
ztest_replay_write(void * arg1,void * arg2,boolean_t byteswap)2179 ztest_replay_write(void *arg1, void *arg2, boolean_t byteswap)
2180 {
2181 ztest_ds_t *zd = arg1;
2182 lr_write_t *lr = arg2;
2183 objset_t *os = zd->zd_os;
2184 void *data = lr + 1; /* data follows lr */
2185 uint64_t offset, length;
2186 ztest_block_tag_t *bt = data;
2187 ztest_block_tag_t *bbt;
2188 uint64_t gen, txg, lrtxg, crtxg;
2189 dmu_object_info_t doi;
2190 dmu_tx_t *tx;
2191 dmu_buf_t *db;
2192 arc_buf_t *abuf = NULL;
2193 rl_t *rl;
2194
2195 if (byteswap)
2196 byteswap_uint64_array(lr, sizeof (*lr));
2197
2198 offset = lr->lr_offset;
2199 length = lr->lr_length;
2200
2201 /* If it's a dmu_sync() block, write the whole block */
2202 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
2203 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
2204 if (length < blocksize) {
2205 offset -= offset % blocksize;
2206 length = blocksize;
2207 }
2208 }
2209
2210 if (bt->bt_magic == BSWAP_64(BT_MAGIC))
2211 byteswap_uint64_array(bt, sizeof (*bt));
2212
2213 if (bt->bt_magic != BT_MAGIC)
2214 bt = NULL;
2215
2216 ztest_object_lock(zd, lr->lr_foid, ZTRL_READER);
2217 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, ZTRL_WRITER);
2218
2219 VERIFY0(dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
2220
2221 dmu_object_info_from_db(db, &doi);
2222
2223 bbt = ztest_bt_bonus(db);
2224 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
2225 gen = bbt->bt_gen;
2226 crtxg = bbt->bt_crtxg;
2227 lrtxg = lr->lr_common.lrc_txg;
2228
2229 tx = dmu_tx_create(os);
2230
2231 dmu_tx_hold_write(tx, lr->lr_foid, offset, length);
2232
2233 if (ztest_random(8) == 0 && length == doi.doi_data_block_size &&
2234 P2PHASE(offset, length) == 0)
2235 abuf = dmu_request_arcbuf(db, length);
2236
2237 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2238 if (txg == 0) {
2239 if (abuf != NULL)
2240 dmu_return_arcbuf(abuf);
2241 dmu_buf_rele(db, FTAG);
2242 ztest_range_unlock(rl);
2243 ztest_object_unlock(zd, lr->lr_foid);
2244 return (ENOSPC);
2245 }
2246
2247 if (bt != NULL) {
2248 /*
2249 * Usually, verify the old data before writing new data --
2250 * but not always, because we also want to verify correct
2251 * behavior when the data was not recently read into cache.
2252 */
2253 ASSERT(doi.doi_data_block_size);
2254 ASSERT0(offset % doi.doi_data_block_size);
2255 if (ztest_random(4) != 0) {
2256 int prefetch = ztest_random(2) ?
2257 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH;
2258 ztest_block_tag_t rbt;
2259
2260 VERIFY(dmu_read(os, lr->lr_foid, offset,
2261 sizeof (rbt), &rbt, prefetch) == 0);
2262 if (rbt.bt_magic == BT_MAGIC) {
2263 ztest_bt_verify(&rbt, os, lr->lr_foid, 0,
2264 offset, gen, txg, crtxg);
2265 }
2266 }
2267
2268 /*
2269 * Writes can appear to be newer than the bonus buffer because
2270 * the ztest_get_data() callback does a dmu_read() of the
2271 * open-context data, which may be different than the data
2272 * as it was when the write was generated.
2273 */
2274 if (zd->zd_zilog->zl_replay) {
2275 ztest_bt_verify(bt, os, lr->lr_foid, 0, offset,
2276 MAX(gen, bt->bt_gen), MAX(txg, lrtxg),
2277 bt->bt_crtxg);
2278 }
2279
2280 /*
2281 * Set the bt's gen/txg to the bonus buffer's gen/txg
2282 * so that all of the usual ASSERTs will work.
2283 */
2284 ztest_bt_generate(bt, os, lr->lr_foid, 0, offset, gen, txg,
2285 crtxg);
2286 }
2287
2288 if (abuf == NULL) {
2289 dmu_write(os, lr->lr_foid, offset, length, data, tx);
2290 } else {
2291 memcpy(abuf->b_data, data, length);
2292 VERIFY0(dmu_assign_arcbuf_by_dbuf(db, offset, abuf, tx));
2293 }
2294
2295 (void) ztest_log_write(zd, tx, lr);
2296
2297 dmu_buf_rele(db, FTAG);
2298
2299 dmu_tx_commit(tx);
2300
2301 ztest_range_unlock(rl);
2302 ztest_object_unlock(zd, lr->lr_foid);
2303
2304 return (0);
2305 }
2306
2307 static int
ztest_replay_truncate(void * arg1,void * arg2,boolean_t byteswap)2308 ztest_replay_truncate(void *arg1, void *arg2, boolean_t byteswap)
2309 {
2310 ztest_ds_t *zd = arg1;
2311 lr_truncate_t *lr = arg2;
2312 objset_t *os = zd->zd_os;
2313 dmu_tx_t *tx;
2314 uint64_t txg;
2315 rl_t *rl;
2316
2317 if (byteswap)
2318 byteswap_uint64_array(lr, sizeof (*lr));
2319
2320 ztest_object_lock(zd, lr->lr_foid, ZTRL_READER);
2321 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
2322 ZTRL_WRITER);
2323
2324 tx = dmu_tx_create(os);
2325
2326 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length);
2327
2328 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2329 if (txg == 0) {
2330 ztest_range_unlock(rl);
2331 ztest_object_unlock(zd, lr->lr_foid);
2332 return (ENOSPC);
2333 }
2334
2335 VERIFY0(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
2336 lr->lr_length, tx));
2337
2338 (void) ztest_log_truncate(zd, tx, lr);
2339
2340 dmu_tx_commit(tx);
2341
2342 ztest_range_unlock(rl);
2343 ztest_object_unlock(zd, lr->lr_foid);
2344
2345 return (0);
2346 }
2347
2348 static int
ztest_replay_setattr(void * arg1,void * arg2,boolean_t byteswap)2349 ztest_replay_setattr(void *arg1, void *arg2, boolean_t byteswap)
2350 {
2351 ztest_ds_t *zd = arg1;
2352 lr_setattr_t *lr = arg2;
2353 objset_t *os = zd->zd_os;
2354 dmu_tx_t *tx;
2355 dmu_buf_t *db;
2356 ztest_block_tag_t *bbt;
2357 uint64_t txg, lrtxg, crtxg, dnodesize;
2358
2359 if (byteswap)
2360 byteswap_uint64_array(lr, sizeof (*lr));
2361
2362 ztest_object_lock(zd, lr->lr_foid, ZTRL_WRITER);
2363
2364 VERIFY0(dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
2365
2366 tx = dmu_tx_create(os);
2367 dmu_tx_hold_bonus(tx, lr->lr_foid);
2368
2369 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2370 if (txg == 0) {
2371 dmu_buf_rele(db, FTAG);
2372 ztest_object_unlock(zd, lr->lr_foid);
2373 return (ENOSPC);
2374 }
2375
2376 bbt = ztest_bt_bonus(db);
2377 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
2378 crtxg = bbt->bt_crtxg;
2379 lrtxg = lr->lr_common.lrc_txg;
2380 dnodesize = bbt->bt_dnodesize;
2381
2382 if (zd->zd_zilog->zl_replay) {
2383 ASSERT3U(lr->lr_size, !=, 0);
2384 ASSERT3U(lr->lr_mode, !=, 0);
2385 ASSERT3U(lrtxg, !=, 0);
2386 } else {
2387 /*
2388 * Randomly change the size and increment the generation.
2389 */
2390 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) *
2391 sizeof (*bbt);
2392 lr->lr_mode = bbt->bt_gen + 1;
2393 ASSERT0(lrtxg);
2394 }
2395
2396 /*
2397 * Verify that the current bonus buffer is not newer than our txg.
2398 */
2399 ztest_bt_verify(bbt, os, lr->lr_foid, dnodesize, -1ULL, lr->lr_mode,
2400 MAX(txg, lrtxg), crtxg);
2401
2402 dmu_buf_will_dirty(db, tx);
2403
2404 ASSERT3U(lr->lr_size, >=, sizeof (*bbt));
2405 ASSERT3U(lr->lr_size, <=, db->db_size);
2406 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx));
2407 bbt = ztest_bt_bonus(db);
2408
2409 ztest_bt_generate(bbt, os, lr->lr_foid, dnodesize, -1ULL, lr->lr_mode,
2410 txg, crtxg);
2411 ztest_fill_unused_bonus(db, bbt, lr->lr_foid, os, bbt->bt_gen);
2412 dmu_buf_rele(db, FTAG);
2413
2414 (void) ztest_log_setattr(zd, tx, lr);
2415
2416 dmu_tx_commit(tx);
2417
2418 ztest_object_unlock(zd, lr->lr_foid);
2419
2420 return (0);
2421 }
2422
2423 static zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = {
2424 NULL, /* 0 no such transaction type */
2425 ztest_replay_create, /* TX_CREATE */
2426 NULL, /* TX_MKDIR */
2427 NULL, /* TX_MKXATTR */
2428 NULL, /* TX_SYMLINK */
2429 ztest_replay_remove, /* TX_REMOVE */
2430 NULL, /* TX_RMDIR */
2431 NULL, /* TX_LINK */
2432 NULL, /* TX_RENAME */
2433 ztest_replay_write, /* TX_WRITE */
2434 ztest_replay_truncate, /* TX_TRUNCATE */
2435 ztest_replay_setattr, /* TX_SETATTR */
2436 NULL, /* TX_ACL */
2437 NULL, /* TX_CREATE_ACL */
2438 NULL, /* TX_CREATE_ATTR */
2439 NULL, /* TX_CREATE_ACL_ATTR */
2440 NULL, /* TX_MKDIR_ACL */
2441 NULL, /* TX_MKDIR_ATTR */
2442 NULL, /* TX_MKDIR_ACL_ATTR */
2443 NULL, /* TX_WRITE2 */
2444 NULL, /* TX_SETSAXATTR */
2445 NULL, /* TX_RENAME_EXCHANGE */
2446 NULL, /* TX_RENAME_WHITEOUT */
2447 };
2448
2449 /*
2450 * ZIL get_data callbacks
2451 */
2452
2453 static void
ztest_get_done(zgd_t * zgd,int error)2454 ztest_get_done(zgd_t *zgd, int error)
2455 {
2456 (void) error;
2457 ztest_ds_t *zd = zgd->zgd_private;
2458 uint64_t object = ((rl_t *)zgd->zgd_lr)->rl_object;
2459
2460 if (zgd->zgd_db)
2461 dmu_buf_rele(zgd->zgd_db, zgd);
2462
2463 ztest_range_unlock((rl_t *)zgd->zgd_lr);
2464 ztest_object_unlock(zd, object);
2465
2466 umem_free(zgd, sizeof (*zgd));
2467 }
2468
2469 static int
ztest_get_data(void * arg,uint64_t arg2,lr_write_t * lr,char * buf,struct lwb * lwb,zio_t * zio)2470 ztest_get_data(void *arg, uint64_t arg2, lr_write_t *lr, char *buf,
2471 struct lwb *lwb, zio_t *zio)
2472 {
2473 (void) arg2;
2474 ztest_ds_t *zd = arg;
2475 objset_t *os = zd->zd_os;
2476 uint64_t object = lr->lr_foid;
2477 uint64_t offset = lr->lr_offset;
2478 uint64_t size = lr->lr_length;
2479 uint64_t txg = lr->lr_common.lrc_txg;
2480 uint64_t crtxg;
2481 dmu_object_info_t doi;
2482 dmu_buf_t *db;
2483 zgd_t *zgd;
2484 int error;
2485
2486 ASSERT3P(lwb, !=, NULL);
2487 ASSERT3U(size, !=, 0);
2488
2489 ztest_object_lock(zd, object, ZTRL_READER);
2490 error = dmu_bonus_hold(os, object, FTAG, &db);
2491 if (error) {
2492 ztest_object_unlock(zd, object);
2493 return (error);
2494 }
2495
2496 crtxg = ztest_bt_bonus(db)->bt_crtxg;
2497
2498 if (crtxg == 0 || crtxg > txg) {
2499 dmu_buf_rele(db, FTAG);
2500 ztest_object_unlock(zd, object);
2501 return (ENOENT);
2502 }
2503
2504 dmu_object_info_from_db(db, &doi);
2505 dmu_buf_rele(db, FTAG);
2506 db = NULL;
2507
2508 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL);
2509 zgd->zgd_lwb = lwb;
2510 zgd->zgd_private = zd;
2511
2512 if (buf != NULL) { /* immediate write */
2513 zgd->zgd_lr = (struct zfs_locked_range *)ztest_range_lock(zd,
2514 object, offset, size, ZTRL_READER);
2515
2516 error = dmu_read(os, object, offset, size, buf,
2517 DMU_READ_NO_PREFETCH);
2518 ASSERT0(error);
2519 } else {
2520 ASSERT3P(zio, !=, NULL);
2521 size = doi.doi_data_block_size;
2522 if (ISP2(size)) {
2523 offset = P2ALIGN_TYPED(offset, size, uint64_t);
2524 } else {
2525 ASSERT3U(offset, <, size);
2526 offset = 0;
2527 }
2528
2529 zgd->zgd_lr = (struct zfs_locked_range *)ztest_range_lock(zd,
2530 object, offset, size, ZTRL_READER);
2531
2532 error = dmu_buf_hold_noread(os, object, offset, zgd, &db);
2533
2534 if (error == 0) {
2535 blkptr_t *bp = &lr->lr_blkptr;
2536
2537 zgd->zgd_db = db;
2538 zgd->zgd_bp = bp;
2539
2540 ASSERT3U(db->db_offset, ==, offset);
2541 ASSERT3U(db->db_size, ==, size);
2542
2543 error = dmu_sync(zio, lr->lr_common.lrc_txg,
2544 ztest_get_done, zgd);
2545
2546 if (error == 0)
2547 return (0);
2548 }
2549 }
2550
2551 ztest_get_done(zgd, error);
2552
2553 return (error);
2554 }
2555
2556 static void *
ztest_lr_alloc(size_t lrsize,char * name)2557 ztest_lr_alloc(size_t lrsize, char *name)
2558 {
2559 char *lr;
2560 size_t namesize = name ? strlen(name) + 1 : 0;
2561
2562 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL);
2563
2564 if (name)
2565 memcpy(lr + lrsize, name, namesize);
2566
2567 return (lr);
2568 }
2569
2570 static void
ztest_lr_free(void * lr,size_t lrsize,char * name)2571 ztest_lr_free(void *lr, size_t lrsize, char *name)
2572 {
2573 size_t namesize = name ? strlen(name) + 1 : 0;
2574
2575 umem_free(lr, lrsize + namesize);
2576 }
2577
2578 /*
2579 * Lookup a bunch of objects. Returns the number of objects not found.
2580 */
2581 static int
ztest_lookup(ztest_ds_t * zd,ztest_od_t * od,int count)2582 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
2583 {
2584 int missing = 0;
2585 int error;
2586 int i;
2587
2588 ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
2589
2590 for (i = 0; i < count; i++, od++) {
2591 od->od_object = 0;
2592 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
2593 sizeof (uint64_t), 1, &od->od_object);
2594 if (error) {
2595 ASSERT3S(error, ==, ENOENT);
2596 ASSERT0(od->od_object);
2597 missing++;
2598 } else {
2599 dmu_buf_t *db;
2600 ztest_block_tag_t *bbt;
2601 dmu_object_info_t doi;
2602
2603 ASSERT3U(od->od_object, !=, 0);
2604 ASSERT0(missing); /* there should be no gaps */
2605
2606 ztest_object_lock(zd, od->od_object, ZTRL_READER);
2607 VERIFY0(dmu_bonus_hold(zd->zd_os, od->od_object,
2608 FTAG, &db));
2609 dmu_object_info_from_db(db, &doi);
2610 bbt = ztest_bt_bonus(db);
2611 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
2612 od->od_type = doi.doi_type;
2613 od->od_blocksize = doi.doi_data_block_size;
2614 od->od_gen = bbt->bt_gen;
2615 dmu_buf_rele(db, FTAG);
2616 ztest_object_unlock(zd, od->od_object);
2617 }
2618 }
2619
2620 return (missing);
2621 }
2622
2623 static int
ztest_create(ztest_ds_t * zd,ztest_od_t * od,int count)2624 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
2625 {
2626 int missing = 0;
2627 int i;
2628
2629 ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
2630
2631 for (i = 0; i < count; i++, od++) {
2632 if (missing) {
2633 od->od_object = 0;
2634 missing++;
2635 continue;
2636 }
2637
2638 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2639
2640 lr->lr_doid = od->od_dir;
2641 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */
2642 lr->lrz_type = od->od_crtype;
2643 lr->lrz_blocksize = od->od_crblocksize;
2644 lr->lrz_ibshift = ztest_random_ibshift();
2645 lr->lrz_bonustype = DMU_OT_UINT64_OTHER;
2646 lr->lrz_dnodesize = od->od_crdnodesize;
2647 lr->lr_gen = od->od_crgen;
2648 lr->lr_crtime[0] = time(NULL);
2649
2650 if (ztest_replay_create(zd, lr, B_FALSE) != 0) {
2651 ASSERT0(missing);
2652 od->od_object = 0;
2653 missing++;
2654 } else {
2655 od->od_object = lr->lr_foid;
2656 od->od_type = od->od_crtype;
2657 od->od_blocksize = od->od_crblocksize;
2658 od->od_gen = od->od_crgen;
2659 ASSERT3U(od->od_object, !=, 0);
2660 }
2661
2662 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2663 }
2664
2665 return (missing);
2666 }
2667
2668 static int
ztest_remove(ztest_ds_t * zd,ztest_od_t * od,int count)2669 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
2670 {
2671 int missing = 0;
2672 int error;
2673 int i;
2674
2675 ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));
2676
2677 od += count - 1;
2678
2679 for (i = count - 1; i >= 0; i--, od--) {
2680 if (missing) {
2681 missing++;
2682 continue;
2683 }
2684
2685 /*
2686 * No object was found.
2687 */
2688 if (od->od_object == 0)
2689 continue;
2690
2691 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2692
2693 lr->lr_doid = od->od_dir;
2694
2695 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) {
2696 ASSERT3U(error, ==, ENOSPC);
2697 missing++;
2698 } else {
2699 od->od_object = 0;
2700 }
2701 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2702 }
2703
2704 return (missing);
2705 }
2706
2707 static int
ztest_write(ztest_ds_t * zd,uint64_t object,uint64_t offset,uint64_t size,const void * data)2708 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size,
2709 const void *data)
2710 {
2711 lr_write_t *lr;
2712 int error;
2713
2714 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL);
2715
2716 lr->lr_foid = object;
2717 lr->lr_offset = offset;
2718 lr->lr_length = size;
2719 lr->lr_blkoff = 0;
2720 BP_ZERO(&lr->lr_blkptr);
2721
2722 memcpy(lr + 1, data, size);
2723
2724 error = ztest_replay_write(zd, lr, B_FALSE);
2725
2726 ztest_lr_free(lr, sizeof (*lr) + size, NULL);
2727
2728 return (error);
2729 }
2730
2731 static int
ztest_truncate(ztest_ds_t * zd,uint64_t object,uint64_t offset,uint64_t size)2732 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2733 {
2734 lr_truncate_t *lr;
2735 int error;
2736
2737 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2738
2739 lr->lr_foid = object;
2740 lr->lr_offset = offset;
2741 lr->lr_length = size;
2742
2743 error = ztest_replay_truncate(zd, lr, B_FALSE);
2744
2745 ztest_lr_free(lr, sizeof (*lr), NULL);
2746
2747 return (error);
2748 }
2749
2750 static int
ztest_setattr(ztest_ds_t * zd,uint64_t object)2751 ztest_setattr(ztest_ds_t *zd, uint64_t object)
2752 {
2753 lr_setattr_t *lr;
2754 int error;
2755
2756 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2757
2758 lr->lr_foid = object;
2759 lr->lr_size = 0;
2760 lr->lr_mode = 0;
2761
2762 error = ztest_replay_setattr(zd, lr, B_FALSE);
2763
2764 ztest_lr_free(lr, sizeof (*lr), NULL);
2765
2766 return (error);
2767 }
2768
2769 static void
ztest_prealloc(ztest_ds_t * zd,uint64_t object,uint64_t offset,uint64_t size)2770 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2771 {
2772 objset_t *os = zd->zd_os;
2773 dmu_tx_t *tx;
2774 uint64_t txg;
2775 rl_t *rl;
2776
2777 txg_wait_synced(dmu_objset_pool(os), 0);
2778
2779 ztest_object_lock(zd, object, ZTRL_READER);
2780 rl = ztest_range_lock(zd, object, offset, size, ZTRL_WRITER);
2781
2782 tx = dmu_tx_create(os);
2783
2784 dmu_tx_hold_write(tx, object, offset, size);
2785
2786 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2787
2788 if (txg != 0) {
2789 dmu_prealloc(os, object, offset, size, tx);
2790 dmu_tx_commit(tx);
2791 txg_wait_synced(dmu_objset_pool(os), txg);
2792 } else {
2793 (void) dmu_free_long_range(os, object, offset, size);
2794 }
2795
2796 ztest_range_unlock(rl);
2797 ztest_object_unlock(zd, object);
2798 }
2799
2800 static void
ztest_io(ztest_ds_t * zd,uint64_t object,uint64_t offset)2801 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset)
2802 {
2803 int err;
2804 ztest_block_tag_t wbt;
2805 dmu_object_info_t doi;
2806 enum ztest_io_type io_type;
2807 uint64_t blocksize;
2808 void *data;
2809
2810 VERIFY0(dmu_object_info(zd->zd_os, object, &doi));
2811 blocksize = doi.doi_data_block_size;
2812 data = umem_alloc(blocksize, UMEM_NOFAIL);
2813
2814 /*
2815 * Pick an i/o type at random, biased toward writing block tags.
2816 */
2817 io_type = ztest_random(ZTEST_IO_TYPES);
2818 if (ztest_random(2) == 0)
2819 io_type = ZTEST_IO_WRITE_TAG;
2820
2821 (void) pthread_rwlock_rdlock(&zd->zd_zilog_lock);
2822
2823 switch (io_type) {
2824
2825 case ZTEST_IO_WRITE_TAG:
2826 ztest_bt_generate(&wbt, zd->zd_os, object, doi.doi_dnodesize,
2827 offset, 0, 0, 0);
2828 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt);
2829 break;
2830
2831 case ZTEST_IO_WRITE_PATTERN:
2832 (void) memset(data, 'a' + (object + offset) % 5, blocksize);
2833 if (ztest_random(2) == 0) {
2834 /*
2835 * Induce fletcher2 collisions to ensure that
2836 * zio_ddt_collision() detects and resolves them
2837 * when using fletcher2-verify for deduplication.
2838 */
2839 ((uint64_t *)data)[0] ^= 1ULL << 63;
2840 ((uint64_t *)data)[4] ^= 1ULL << 63;
2841 }
2842 (void) ztest_write(zd, object, offset, blocksize, data);
2843 break;
2844
2845 case ZTEST_IO_WRITE_ZEROES:
2846 memset(data, 0, blocksize);
2847 (void) ztest_write(zd, object, offset, blocksize, data);
2848 break;
2849
2850 case ZTEST_IO_TRUNCATE:
2851 (void) ztest_truncate(zd, object, offset, blocksize);
2852 break;
2853
2854 case ZTEST_IO_SETATTR:
2855 (void) ztest_setattr(zd, object);
2856 break;
2857 default:
2858 break;
2859
2860 case ZTEST_IO_REWRITE:
2861 (void) pthread_rwlock_rdlock(&ztest_name_lock);
2862 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2863 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa),
2864 B_FALSE);
2865 ASSERT(err == 0 || err == ENOSPC);
2866 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2867 ZFS_PROP_COMPRESSION,
2868 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION),
2869 B_FALSE);
2870 ASSERT(err == 0 || err == ENOSPC);
2871 (void) pthread_rwlock_unlock(&ztest_name_lock);
2872
2873 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data,
2874 DMU_READ_NO_PREFETCH));
2875
2876 (void) ztest_write(zd, object, offset, blocksize, data);
2877 break;
2878 }
2879
2880 (void) pthread_rwlock_unlock(&zd->zd_zilog_lock);
2881
2882 umem_free(data, blocksize);
2883 }
2884
2885 /*
2886 * Initialize an object description template.
2887 */
2888 static void
ztest_od_init(ztest_od_t * od,uint64_t id,const char * tag,uint64_t index,dmu_object_type_t type,uint64_t blocksize,uint64_t dnodesize,uint64_t gen)2889 ztest_od_init(ztest_od_t *od, uint64_t id, const char *tag, uint64_t index,
2890 dmu_object_type_t type, uint64_t blocksize, uint64_t dnodesize,
2891 uint64_t gen)
2892 {
2893 od->od_dir = ZTEST_DIROBJ;
2894 od->od_object = 0;
2895
2896 od->od_crtype = type;
2897 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize();
2898 od->od_crdnodesize = dnodesize ? dnodesize : ztest_random_dnodesize();
2899 od->od_crgen = gen;
2900
2901 od->od_type = DMU_OT_NONE;
2902 od->od_blocksize = 0;
2903 od->od_gen = 0;
2904
2905 (void) snprintf(od->od_name, sizeof (od->od_name),
2906 "%s(%"PRId64")[%"PRIu64"]",
2907 tag, id, index);
2908 }
2909
2910 /*
2911 * Lookup or create the objects for a test using the od template.
2912 * If the objects do not all exist, or if 'remove' is specified,
2913 * remove any existing objects and create new ones. Otherwise,
2914 * use the existing objects.
2915 */
2916 static int
ztest_object_init(ztest_ds_t * zd,ztest_od_t * od,size_t size,boolean_t remove)2917 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
2918 {
2919 int count = size / sizeof (*od);
2920 int rv = 0;
2921
2922 mutex_enter(&zd->zd_dirobj_lock);
2923 if ((ztest_lookup(zd, od, count) != 0 || remove) &&
2924 (ztest_remove(zd, od, count) != 0 ||
2925 ztest_create(zd, od, count) != 0))
2926 rv = -1;
2927 zd->zd_od = od;
2928 mutex_exit(&zd->zd_dirobj_lock);
2929
2930 return (rv);
2931 }
2932
2933 void
ztest_zil_commit(ztest_ds_t * zd,uint64_t id)2934 ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
2935 {
2936 (void) id;
2937 zilog_t *zilog = zd->zd_zilog;
2938
2939 (void) pthread_rwlock_rdlock(&zd->zd_zilog_lock);
2940
2941 zil_commit(zilog, ztest_random(ZTEST_OBJECTS));
2942
2943 /*
2944 * Remember the committed values in zd, which is in parent/child
2945 * shared memory. If we die, the next iteration of ztest_run()
2946 * will verify that the log really does contain this record.
2947 */
2948 mutex_enter(&zilog->zl_lock);
2949 ASSERT3P(zd->zd_shared, !=, NULL);
2950 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq);
2951 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq;
2952 mutex_exit(&zilog->zl_lock);
2953
2954 (void) pthread_rwlock_unlock(&zd->zd_zilog_lock);
2955 }
2956
2957 /*
2958 * This function is designed to simulate the operations that occur during a
2959 * mount/unmount operation. We hold the dataset across these operations in an
2960 * attempt to expose any implicit assumptions about ZIL management.
2961 */
2962 void
ztest_zil_remount(ztest_ds_t * zd,uint64_t id)2963 ztest_zil_remount(ztest_ds_t *zd, uint64_t id)
2964 {
2965 (void) id;
2966 objset_t *os = zd->zd_os;
2967
2968 /*
2969 * We hold the ztest_vdev_lock so we don't cause problems with
2970 * other threads that wish to remove a log device, such as
2971 * ztest_device_removal().
2972 */
2973 mutex_enter(&ztest_vdev_lock);
2974
2975 /*
2976 * We grab the zd_dirobj_lock to ensure that no other thread is
2977 * updating the zil (i.e. adding in-memory log records) and the
2978 * zd_zilog_lock to block any I/O.
2979 */
2980 mutex_enter(&zd->zd_dirobj_lock);
2981 (void) pthread_rwlock_wrlock(&zd->zd_zilog_lock);
2982
2983 /* zfsvfs_teardown() */
2984 zil_close(zd->zd_zilog);
2985
2986 /* zfsvfs_setup() */
2987 VERIFY3P(zil_open(os, ztest_get_data, NULL), ==, zd->zd_zilog);
2988 zil_replay(os, zd, ztest_replay_vector);
2989
2990 (void) pthread_rwlock_unlock(&zd->zd_zilog_lock);
2991 mutex_exit(&zd->zd_dirobj_lock);
2992 mutex_exit(&ztest_vdev_lock);
2993 }
2994
2995 /*
2996 * Verify that we can't destroy an active pool, create an existing pool,
2997 * or create a pool with a bad vdev spec.
2998 */
2999 void
ztest_spa_create_destroy(ztest_ds_t * zd,uint64_t id)3000 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
3001 {
3002 (void) zd, (void) id;
3003 ztest_shared_opts_t *zo = &ztest_opts;
3004 spa_t *spa;
3005 nvlist_t *nvroot;
3006
3007 if (zo->zo_mmp_test)
3008 return;
3009
3010 /*
3011 * Attempt to create using a bad file.
3012 */
3013 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 0, 1);
3014 VERIFY3U(ENOENT, ==,
3015 spa_create("ztest_bad_file", nvroot, NULL, NULL, NULL));
3016 fnvlist_free(nvroot);
3017
3018 /*
3019 * Attempt to create using a bad mirror.
3020 */
3021 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 2, 1);
3022 VERIFY3U(ENOENT, ==,
3023 spa_create("ztest_bad_mirror", nvroot, NULL, NULL, NULL));
3024 fnvlist_free(nvroot);
3025
3026 /*
3027 * Attempt to create an existing pool. It shouldn't matter
3028 * what's in the nvroot; we should fail with EEXIST.
3029 */
3030 (void) pthread_rwlock_rdlock(&ztest_name_lock);
3031 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, NULL, 0, 0, 1);
3032 VERIFY3U(EEXIST, ==,
3033 spa_create(zo->zo_pool, nvroot, NULL, NULL, NULL));
3034 fnvlist_free(nvroot);
3035
3036 /*
3037 * We open a reference to the spa and then we try to export it
3038 * expecting one of the following errors:
3039 *
3040 * EBUSY
3041 * Because of the reference we just opened.
3042 *
3043 * ZFS_ERR_EXPORT_IN_PROGRESS
3044 * For the case that there is another ztest thread doing
3045 * an export concurrently.
3046 */
3047 VERIFY0(spa_open(zo->zo_pool, &spa, FTAG));
3048 int error = spa_destroy(zo->zo_pool);
3049 if (error != EBUSY && error != ZFS_ERR_EXPORT_IN_PROGRESS) {
3050 fatal(B_FALSE, "spa_destroy(%s) returned unexpected value %d",
3051 spa->spa_name, error);
3052 }
3053 spa_close(spa, FTAG);
3054
3055 (void) pthread_rwlock_unlock(&ztest_name_lock);
3056 }
3057
3058 /*
3059 * Start and then stop the MMP threads to ensure the startup and shutdown code
3060 * works properly. Actual protection and property-related code tested via ZTS.
3061 */
3062 void
ztest_mmp_enable_disable(ztest_ds_t * zd,uint64_t id)3063 ztest_mmp_enable_disable(ztest_ds_t *zd, uint64_t id)
3064 {
3065 (void) zd, (void) id;
3066 ztest_shared_opts_t *zo = &ztest_opts;
3067 spa_t *spa = ztest_spa;
3068
3069 if (zo->zo_mmp_test)
3070 return;
3071
3072 /*
3073 * Since enabling MMP involves setting a property, it could not be done
3074 * while the pool is suspended.
3075 */
3076 if (spa_suspended(spa))
3077 return;
3078
3079 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3080 mutex_enter(&spa->spa_props_lock);
3081
3082 zfs_multihost_fail_intervals = 0;
3083
3084 if (!spa_multihost(spa)) {
3085 spa->spa_multihost = B_TRUE;
3086 mmp_thread_start(spa);
3087 }
3088
3089 mutex_exit(&spa->spa_props_lock);
3090 spa_config_exit(spa, SCL_CONFIG, FTAG);
3091
3092 txg_wait_synced(spa_get_dsl(spa), 0);
3093 mmp_signal_all_threads();
3094 txg_wait_synced(spa_get_dsl(spa), 0);
3095
3096 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
3097 mutex_enter(&spa->spa_props_lock);
3098
3099 if (spa_multihost(spa)) {
3100 mmp_thread_stop(spa);
3101 spa->spa_multihost = B_FALSE;
3102 }
3103
3104 mutex_exit(&spa->spa_props_lock);
3105 spa_config_exit(spa, SCL_CONFIG, FTAG);
3106 }
3107
3108 static int
ztest_get_raidz_children(spa_t * spa)3109 ztest_get_raidz_children(spa_t *spa)
3110 {
3111 (void) spa;
3112 vdev_t *raidvd;
3113
3114 ASSERT(MUTEX_HELD(&ztest_vdev_lock));
3115
3116 if (ztest_opts.zo_raid_do_expand) {
3117 raidvd = ztest_spa->spa_root_vdev->vdev_child[0];
3118
3119 ASSERT(raidvd->vdev_ops == &vdev_raidz_ops);
3120
3121 return (raidvd->vdev_children);
3122 }
3123
3124 return (ztest_opts.zo_raid_children);
3125 }
3126
3127 void
ztest_spa_upgrade(ztest_ds_t * zd,uint64_t id)3128 ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
3129 {
3130 (void) zd, (void) id;
3131 spa_t *spa;
3132 uint64_t initial_version = SPA_VERSION_INITIAL;
3133 uint64_t raidz_children, version, newversion;
3134 nvlist_t *nvroot, *props;
3135 char *name;
3136
3137 if (ztest_opts.zo_mmp_test)
3138 return;
3139
3140 /* dRAID added after feature flags, skip upgrade test. */
3141 if (strcmp(ztest_opts.zo_raid_type, VDEV_TYPE_DRAID) == 0)
3142 return;
3143
3144 mutex_enter(&ztest_vdev_lock);
3145 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool);
3146
3147 /*
3148 * Clean up from previous runs.
3149 */
3150 (void) spa_destroy(name);
3151
3152 raidz_children = ztest_get_raidz_children(ztest_spa);
3153
3154 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0,
3155 NULL, raidz_children, ztest_opts.zo_mirrors, 1);
3156
3157 /*
3158 * If we're configuring a RAIDZ device then make sure that the
3159 * initial version is capable of supporting that feature.
3160 */
3161 switch (ztest_opts.zo_raid_parity) {
3162 case 0:
3163 case 1:
3164 initial_version = SPA_VERSION_INITIAL;
3165 break;
3166 case 2:
3167 initial_version = SPA_VERSION_RAIDZ2;
3168 break;
3169 case 3:
3170 initial_version = SPA_VERSION_RAIDZ3;
3171 break;
3172 }
3173
3174 /*
3175 * Create a pool with a spa version that can be upgraded. Pick
3176 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES.
3177 */
3178 do {
3179 version = ztest_random_spa_version(initial_version);
3180 } while (version > SPA_VERSION_BEFORE_FEATURES);
3181
3182 props = fnvlist_alloc();
3183 fnvlist_add_uint64(props,
3184 zpool_prop_to_name(ZPOOL_PROP_VERSION), version);
3185 VERIFY0(spa_create(name, nvroot, props, NULL, NULL));
3186 fnvlist_free(nvroot);
3187 fnvlist_free(props);
3188
3189 VERIFY0(spa_open(name, &spa, FTAG));
3190 VERIFY3U(spa_version(spa), ==, version);
3191 newversion = ztest_random_spa_version(version + 1);
3192
3193 if (ztest_opts.zo_verbose >= 4) {
3194 (void) printf("upgrading spa version from "
3195 "%"PRIu64" to %"PRIu64"\n",
3196 version, newversion);
3197 }
3198
3199 spa_upgrade(spa, newversion);
3200 VERIFY3U(spa_version(spa), >, version);
3201 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config,
3202 zpool_prop_to_name(ZPOOL_PROP_VERSION)));
3203 spa_close(spa, FTAG);
3204
3205 kmem_strfree(name);
3206 mutex_exit(&ztest_vdev_lock);
3207 }
3208
3209 static void
ztest_spa_checkpoint(spa_t * spa)3210 ztest_spa_checkpoint(spa_t *spa)
3211 {
3212 ASSERT(MUTEX_HELD(&ztest_checkpoint_lock));
3213
3214 int error = spa_checkpoint(spa->spa_name);
3215
3216 switch (error) {
3217 case 0:
3218 case ZFS_ERR_DEVRM_IN_PROGRESS:
3219 case ZFS_ERR_DISCARDING_CHECKPOINT:
3220 case ZFS_ERR_CHECKPOINT_EXISTS:
3221 case ZFS_ERR_RAIDZ_EXPAND_IN_PROGRESS:
3222 break;
3223 case ENOSPC:
3224 ztest_record_enospc(FTAG);
3225 break;
3226 default:
3227 fatal(B_FALSE, "spa_checkpoint(%s) = %d", spa->spa_name, error);
3228 }
3229 }
3230
3231 static void
ztest_spa_discard_checkpoint(spa_t * spa)3232 ztest_spa_discard_checkpoint(spa_t *spa)
3233 {
3234 ASSERT(MUTEX_HELD(&ztest_checkpoint_lock));
3235
3236 int error = spa_checkpoint_discard(spa->spa_name);
3237
3238 switch (error) {
3239 case 0:
3240 case ZFS_ERR_DISCARDING_CHECKPOINT:
3241 case ZFS_ERR_NO_CHECKPOINT:
3242 break;
3243 default:
3244 fatal(B_FALSE, "spa_discard_checkpoint(%s) = %d",
3245 spa->spa_name, error);
3246 }
3247
3248 }
3249
3250 void
ztest_spa_checkpoint_create_discard(ztest_ds_t * zd,uint64_t id)3251 ztest_spa_checkpoint_create_discard(ztest_ds_t *zd, uint64_t id)
3252 {
3253 (void) zd, (void) id;
3254 spa_t *spa = ztest_spa;
3255
3256 mutex_enter(&ztest_checkpoint_lock);
3257 if (ztest_random(2) == 0) {
3258 ztest_spa_checkpoint(spa);
3259 } else {
3260 ztest_spa_discard_checkpoint(spa);
3261 }
3262 mutex_exit(&ztest_checkpoint_lock);
3263 }
3264
3265
3266 static vdev_t *
vdev_lookup_by_path(vdev_t * vd,const char * path)3267 vdev_lookup_by_path(vdev_t *vd, const char *path)
3268 {
3269 vdev_t *mvd;
3270 int c;
3271
3272 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0)
3273 return (vd);
3274
3275 for (c = 0; c < vd->vdev_children; c++)
3276 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) !=
3277 NULL)
3278 return (mvd);
3279
3280 return (NULL);
3281 }
3282
3283 static int
spa_num_top_vdevs(spa_t * spa)3284 spa_num_top_vdevs(spa_t *spa)
3285 {
3286 vdev_t *rvd = spa->spa_root_vdev;
3287 ASSERT3U(spa_config_held(spa, SCL_VDEV, RW_READER), ==, SCL_VDEV);
3288 return (rvd->vdev_children);
3289 }
3290
3291 /*
3292 * Verify that vdev_add() works as expected.
3293 */
3294 void
ztest_vdev_add_remove(ztest_ds_t * zd,uint64_t id)3295 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
3296 {
3297 (void) zd, (void) id;
3298 ztest_shared_t *zs = ztest_shared;
3299 spa_t *spa = ztest_spa;
3300 uint64_t leaves;
3301 uint64_t guid;
3302 uint64_t raidz_children;
3303
3304 nvlist_t *nvroot;
3305 int error;
3306
3307 if (ztest_opts.zo_mmp_test)
3308 return;
3309
3310 mutex_enter(&ztest_vdev_lock);
3311 raidz_children = ztest_get_raidz_children(spa);
3312 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * raidz_children;
3313
3314 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3315
3316 ztest_shared->zs_vdev_next_leaf = spa_num_top_vdevs(spa) * leaves;
3317
3318 /*
3319 * If we have slogs then remove them 1/4 of the time.
3320 */
3321 if (spa_has_slogs(spa) && ztest_random(4) == 0) {
3322 metaslab_group_t *mg;
3323
3324 /*
3325 * find the first real slog in log allocation class
3326 */
3327 mg = spa_log_class(spa)->mc_allocator[0].mca_rotor;
3328 while (!mg->mg_vd->vdev_islog)
3329 mg = mg->mg_next;
3330
3331 guid = mg->mg_vd->vdev_guid;
3332
3333 spa_config_exit(spa, SCL_VDEV, FTAG);
3334
3335 /*
3336 * We have to grab the zs_name_lock as writer to
3337 * prevent a race between removing a slog (dmu_objset_find)
3338 * and destroying a dataset. Removing the slog will
3339 * grab a reference on the dataset which may cause
3340 * dsl_destroy_head() to fail with EBUSY thus
3341 * leaving the dataset in an inconsistent state.
3342 */
3343 pthread_rwlock_wrlock(&ztest_name_lock);
3344 error = spa_vdev_remove(spa, guid, B_FALSE);
3345 pthread_rwlock_unlock(&ztest_name_lock);
3346
3347 switch (error) {
3348 case 0:
3349 case EEXIST: /* Generic zil_reset() error */
3350 case EBUSY: /* Replay required */
3351 case EACCES: /* Crypto key not loaded */
3352 case ZFS_ERR_CHECKPOINT_EXISTS:
3353 case ZFS_ERR_DISCARDING_CHECKPOINT:
3354 break;
3355 default:
3356 fatal(B_FALSE, "spa_vdev_remove() = %d", error);
3357 }
3358 } else {
3359 spa_config_exit(spa, SCL_VDEV, FTAG);
3360
3361 /*
3362 * Make 1/4 of the devices be log devices
3363 */
3364 nvroot = make_vdev_root(NULL, NULL, NULL,
3365 ztest_opts.zo_vdev_size, 0, (ztest_random(4) == 0) ?
3366 "log" : NULL, raidz_children, zs->zs_mirrors,
3367 1);
3368
3369 error = spa_vdev_add(spa, nvroot, B_FALSE);
3370 fnvlist_free(nvroot);
3371
3372 switch (error) {
3373 case 0:
3374 break;
3375 case ENOSPC:
3376 ztest_record_enospc("spa_vdev_add");
3377 break;
3378 default:
3379 fatal(B_FALSE, "spa_vdev_add() = %d", error);
3380 }
3381 }
3382
3383 mutex_exit(&ztest_vdev_lock);
3384 }
3385
3386 void
ztest_vdev_class_add(ztest_ds_t * zd,uint64_t id)3387 ztest_vdev_class_add(ztest_ds_t *zd, uint64_t id)
3388 {
3389 (void) zd, (void) id;
3390 ztest_shared_t *zs = ztest_shared;
3391 spa_t *spa = ztest_spa;
3392 uint64_t leaves;
3393 nvlist_t *nvroot;
3394 uint64_t raidz_children;
3395 const char *class = (ztest_random(2) == 0) ?
3396 VDEV_ALLOC_BIAS_SPECIAL : VDEV_ALLOC_BIAS_DEDUP;
3397 int error;
3398
3399 /*
3400 * By default add a special vdev 50% of the time
3401 */
3402 if ((ztest_opts.zo_special_vdevs == ZTEST_VDEV_CLASS_OFF) ||
3403 (ztest_opts.zo_special_vdevs == ZTEST_VDEV_CLASS_RND &&
3404 ztest_random(2) == 0)) {
3405 return;
3406 }
3407
3408 mutex_enter(&ztest_vdev_lock);
3409
3410 /* Only test with mirrors */
3411 if (zs->zs_mirrors < 2) {
3412 mutex_exit(&ztest_vdev_lock);
3413 return;
3414 }
3415
3416 /* requires feature@allocation_classes */
3417 if (!spa_feature_is_enabled(spa, SPA_FEATURE_ALLOCATION_CLASSES)) {
3418 mutex_exit(&ztest_vdev_lock);
3419 return;
3420 }
3421
3422 raidz_children = ztest_get_raidz_children(spa);
3423 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * raidz_children;
3424
3425 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3426 ztest_shared->zs_vdev_next_leaf = spa_num_top_vdevs(spa) * leaves;
3427 spa_config_exit(spa, SCL_VDEV, FTAG);
3428
3429 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
3430 class, raidz_children, zs->zs_mirrors, 1);
3431
3432 error = spa_vdev_add(spa, nvroot, B_FALSE);
3433 fnvlist_free(nvroot);
3434
3435 if (error == ENOSPC)
3436 ztest_record_enospc("spa_vdev_add");
3437 else if (error != 0)
3438 fatal(B_FALSE, "spa_vdev_add() = %d", error);
3439
3440 /*
3441 * 50% of the time allow small blocks in the special class
3442 */
3443 if (error == 0 &&
3444 spa_special_class(spa)->mc_groups == 1 && ztest_random(2) == 0) {
3445 if (ztest_opts.zo_verbose >= 3)
3446 (void) printf("Enabling special VDEV small blocks\n");
3447 error = ztest_dsl_prop_set_uint64(zd->zd_name,
3448 ZFS_PROP_SPECIAL_SMALL_BLOCKS, 32768, B_FALSE);
3449 ASSERT(error == 0 || error == ENOSPC);
3450 }
3451
3452 mutex_exit(&ztest_vdev_lock);
3453
3454 if (ztest_opts.zo_verbose >= 3) {
3455 metaslab_class_t *mc;
3456
3457 if (strcmp(class, VDEV_ALLOC_BIAS_SPECIAL) == 0)
3458 mc = spa_special_class(spa);
3459 else
3460 mc = spa_dedup_class(spa);
3461 (void) printf("Added a %s mirrored vdev (of %d)\n",
3462 class, (int)mc->mc_groups);
3463 }
3464 }
3465
3466 /*
3467 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected.
3468 */
3469 void
ztest_vdev_aux_add_remove(ztest_ds_t * zd,uint64_t id)3470 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
3471 {
3472 (void) zd, (void) id;
3473 ztest_shared_t *zs = ztest_shared;
3474 spa_t *spa = ztest_spa;
3475 vdev_t *rvd = spa->spa_root_vdev;
3476 spa_aux_vdev_t *sav;
3477 const char *aux;
3478 char *path;
3479 uint64_t guid = 0;
3480 int error, ignore_err = 0;
3481
3482 if (ztest_opts.zo_mmp_test)
3483 return;
3484
3485 path = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
3486
3487 if (ztest_random(2) == 0) {
3488 sav = &spa->spa_spares;
3489 aux = ZPOOL_CONFIG_SPARES;
3490 } else {
3491 sav = &spa->spa_l2cache;
3492 aux = ZPOOL_CONFIG_L2CACHE;
3493 }
3494
3495 mutex_enter(&ztest_vdev_lock);
3496
3497 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3498
3499 if (sav->sav_count != 0 && ztest_random(4) == 0) {
3500 /*
3501 * Pick a random device to remove.
3502 */
3503 vdev_t *svd = sav->sav_vdevs[ztest_random(sav->sav_count)];
3504
3505 /* dRAID spares cannot be removed; try anyways to see ENOTSUP */
3506 if (strstr(svd->vdev_path, VDEV_TYPE_DRAID) != NULL)
3507 ignore_err = ENOTSUP;
3508
3509 guid = svd->vdev_guid;
3510 } else {
3511 /*
3512 * Find an unused device we can add.
3513 */
3514 zs->zs_vdev_aux = 0;
3515 for (;;) {
3516 int c;
3517 (void) snprintf(path, MAXPATHLEN, ztest_aux_template,
3518 ztest_opts.zo_dir, ztest_opts.zo_pool, aux,
3519 zs->zs_vdev_aux);
3520 for (c = 0; c < sav->sav_count; c++)
3521 if (strcmp(sav->sav_vdevs[c]->vdev_path,
3522 path) == 0)
3523 break;
3524 if (c == sav->sav_count &&
3525 vdev_lookup_by_path(rvd, path) == NULL)
3526 break;
3527 zs->zs_vdev_aux++;
3528 }
3529 }
3530
3531 spa_config_exit(spa, SCL_VDEV, FTAG);
3532
3533 if (guid == 0) {
3534 /*
3535 * Add a new device.
3536 */
3537 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL,
3538 (ztest_opts.zo_vdev_size * 5) / 4, 0, NULL, 0, 0, 1);
3539 error = spa_vdev_add(spa, nvroot, B_FALSE);
3540
3541 switch (error) {
3542 case 0:
3543 break;
3544 default:
3545 fatal(B_FALSE, "spa_vdev_add(%p) = %d", nvroot, error);
3546 }
3547 fnvlist_free(nvroot);
3548 } else {
3549 /*
3550 * Remove an existing device. Sometimes, dirty its
3551 * vdev state first to make sure we handle removal
3552 * of devices that have pending state changes.
3553 */
3554 if (ztest_random(2) == 0)
3555 (void) vdev_online(spa, guid, 0, NULL);
3556
3557 error = spa_vdev_remove(spa, guid, B_FALSE);
3558
3559 switch (error) {
3560 case 0:
3561 case EBUSY:
3562 case ZFS_ERR_CHECKPOINT_EXISTS:
3563 case ZFS_ERR_DISCARDING_CHECKPOINT:
3564 break;
3565 default:
3566 if (error != ignore_err)
3567 fatal(B_FALSE,
3568 "spa_vdev_remove(%"PRIu64") = %d",
3569 guid, error);
3570 }
3571 }
3572
3573 mutex_exit(&ztest_vdev_lock);
3574
3575 umem_free(path, MAXPATHLEN);
3576 }
3577
3578 /*
3579 * split a pool if it has mirror tlvdevs
3580 */
3581 void
ztest_split_pool(ztest_ds_t * zd,uint64_t id)3582 ztest_split_pool(ztest_ds_t *zd, uint64_t id)
3583 {
3584 (void) zd, (void) id;
3585 ztest_shared_t *zs = ztest_shared;
3586 spa_t *spa = ztest_spa;
3587 vdev_t *rvd = spa->spa_root_vdev;
3588 nvlist_t *tree, **child, *config, *split, **schild;
3589 uint_t c, children, schildren = 0, lastlogid = 0;
3590 int error = 0;
3591
3592 if (ztest_opts.zo_mmp_test)
3593 return;
3594
3595 mutex_enter(&ztest_vdev_lock);
3596
3597 /* ensure we have a usable config; mirrors of raidz aren't supported */
3598 if (zs->zs_mirrors < 3 || ztest_opts.zo_raid_children > 1) {
3599 mutex_exit(&ztest_vdev_lock);
3600 return;
3601 }
3602
3603 /* clean up the old pool, if any */
3604 (void) spa_destroy("splitp");
3605
3606 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
3607
3608 /* generate a config from the existing config */
3609 mutex_enter(&spa->spa_props_lock);
3610 tree = fnvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE);
3611 mutex_exit(&spa->spa_props_lock);
3612
3613 VERIFY0(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN,
3614 &child, &children));
3615
3616 schild = umem_alloc(rvd->vdev_children * sizeof (nvlist_t *),
3617 UMEM_NOFAIL);
3618 for (c = 0; c < children; c++) {
3619 vdev_t *tvd = rvd->vdev_child[c];
3620 nvlist_t **mchild;
3621 uint_t mchildren;
3622
3623 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) {
3624 schild[schildren] = fnvlist_alloc();
3625 fnvlist_add_string(schild[schildren],
3626 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE);
3627 fnvlist_add_uint64(schild[schildren],
3628 ZPOOL_CONFIG_IS_HOLE, 1);
3629 if (lastlogid == 0)
3630 lastlogid = schildren;
3631 ++schildren;
3632 continue;
3633 }
3634 lastlogid = 0;
3635 VERIFY0(nvlist_lookup_nvlist_array(child[c],
3636 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren));
3637 schild[schildren++] = fnvlist_dup(mchild[0]);
3638 }
3639
3640 /* OK, create a config that can be used to split */
3641 split = fnvlist_alloc();
3642 fnvlist_add_string(split, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT);
3643 fnvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN,
3644 (const nvlist_t **)schild, lastlogid != 0 ? lastlogid : schildren);
3645
3646 config = fnvlist_alloc();
3647 fnvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split);
3648
3649 for (c = 0; c < schildren; c++)
3650 fnvlist_free(schild[c]);
3651 umem_free(schild, rvd->vdev_children * sizeof (nvlist_t *));
3652 fnvlist_free(split);
3653
3654 spa_config_exit(spa, SCL_VDEV, FTAG);
3655
3656 (void) pthread_rwlock_wrlock(&ztest_name_lock);
3657 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
3658 (void) pthread_rwlock_unlock(&ztest_name_lock);
3659
3660 fnvlist_free(config);
3661
3662 if (error == 0) {
3663 (void) printf("successful split - results:\n");
3664 mutex_enter(&spa_namespace_lock);
3665 show_pool_stats(spa);
3666 show_pool_stats(spa_lookup("splitp"));
3667 mutex_exit(&spa_namespace_lock);
3668 ++zs->zs_splits;
3669 --zs->zs_mirrors;
3670 }
3671 mutex_exit(&ztest_vdev_lock);
3672 }
3673
3674 /*
3675 * Verify that we can attach and detach devices.
3676 */
3677 void
ztest_vdev_attach_detach(ztest_ds_t * zd,uint64_t id)3678 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
3679 {
3680 (void) zd, (void) id;
3681 ztest_shared_t *zs = ztest_shared;
3682 spa_t *spa = ztest_spa;
3683 spa_aux_vdev_t *sav = &spa->spa_spares;
3684 vdev_t *rvd = spa->spa_root_vdev;
3685 vdev_t *oldvd, *newvd, *pvd;
3686 nvlist_t *root;
3687 uint64_t leaves;
3688 uint64_t leaf, top;
3689 uint64_t ashift = ztest_get_ashift();
3690 uint64_t oldguid, pguid;
3691 uint64_t oldsize, newsize;
3692 uint64_t raidz_children;
3693 char *oldpath, *newpath;
3694 int replacing;
3695 int oldvd_has_siblings = B_FALSE;
3696 int newvd_is_spare = B_FALSE;
3697 int newvd_is_dspare = B_FALSE;
3698 int oldvd_is_log;
3699 int oldvd_is_special;
3700 int error, expected_error;
3701
3702 if (ztest_opts.zo_mmp_test)
3703 return;
3704
3705 oldpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
3706 newpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
3707
3708 mutex_enter(&ztest_vdev_lock);
3709 raidz_children = ztest_get_raidz_children(spa);
3710 leaves = MAX(zs->zs_mirrors, 1) * raidz_children;
3711
3712 spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
3713
3714 /*
3715 * If a vdev is in the process of being removed, its removal may
3716 * finish while we are in progress, leading to an unexpected error
3717 * value. Don't bother trying to attach while we are in the middle
3718 * of removal.
3719 */
3720 if (ztest_device_removal_active) {
3721 spa_config_exit(spa, SCL_ALL, FTAG);
3722 goto out;
3723 }
3724
3725 /*
3726 * RAIDZ leaf VDEV mirrors are not currently supported while a
3727 * RAIDZ expansion is in progress.
3728 */
3729 if (ztest_opts.zo_raid_do_expand) {
3730 spa_config_exit(spa, SCL_ALL, FTAG);
3731 goto out;
3732 }
3733
3734 /*
3735 * Decide whether to do an attach or a replace.
3736 */
3737 replacing = ztest_random(2);
3738
3739 /*
3740 * Pick a random top-level vdev.
3741 */
3742 top = ztest_random_vdev_top(spa, B_TRUE);
3743
3744 /*
3745 * Pick a random leaf within it.
3746 */
3747 leaf = ztest_random(leaves);
3748
3749 /*
3750 * Locate this vdev.
3751 */
3752 oldvd = rvd->vdev_child[top];
3753
3754 /* pick a child from the mirror */
3755 if (zs->zs_mirrors >= 1) {
3756 ASSERT3P(oldvd->vdev_ops, ==, &vdev_mirror_ops);
3757 ASSERT3U(oldvd->vdev_children, >=, zs->zs_mirrors);
3758 oldvd = oldvd->vdev_child[leaf / raidz_children];
3759 }
3760
3761 /* pick a child out of the raidz group */
3762 if (ztest_opts.zo_raid_children > 1) {
3763 if (strcmp(oldvd->vdev_ops->vdev_op_type, "raidz") == 0)
3764 ASSERT3P(oldvd->vdev_ops, ==, &vdev_raidz_ops);
3765 else
3766 ASSERT3P(oldvd->vdev_ops, ==, &vdev_draid_ops);
3767 oldvd = oldvd->vdev_child[leaf % raidz_children];
3768 }
3769
3770 /*
3771 * If we're already doing an attach or replace, oldvd may be a
3772 * mirror vdev -- in which case, pick a random child.
3773 */
3774 while (oldvd->vdev_children != 0) {
3775 oldvd_has_siblings = B_TRUE;
3776 ASSERT3U(oldvd->vdev_children, >=, 2);
3777 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)];
3778 }
3779
3780 oldguid = oldvd->vdev_guid;
3781 oldsize = vdev_get_min_asize(oldvd);
3782 oldvd_is_log = oldvd->vdev_top->vdev_islog;
3783 oldvd_is_special =
3784 oldvd->vdev_top->vdev_alloc_bias == VDEV_BIAS_SPECIAL ||
3785 oldvd->vdev_top->vdev_alloc_bias == VDEV_BIAS_DEDUP;
3786 (void) strlcpy(oldpath, oldvd->vdev_path, MAXPATHLEN);
3787 pvd = oldvd->vdev_parent;
3788 pguid = pvd->vdev_guid;
3789
3790 /*
3791 * If oldvd has siblings, then half of the time, detach it. Prior
3792 * to the detach the pool is scrubbed in order to prevent creating
3793 * unrepairable blocks as a result of the data corruption injection.
3794 */
3795 if (oldvd_has_siblings && ztest_random(2) == 0) {
3796 spa_config_exit(spa, SCL_ALL, FTAG);
3797
3798 error = ztest_scrub_impl(spa);
3799 if (error)
3800 goto out;
3801
3802 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE);
3803 if (error != 0 && error != ENODEV && error != EBUSY &&
3804 error != ENOTSUP && error != ZFS_ERR_CHECKPOINT_EXISTS &&
3805 error != ZFS_ERR_DISCARDING_CHECKPOINT)
3806 fatal(B_FALSE, "detach (%s) returned %d",
3807 oldpath, error);
3808 goto out;
3809 }
3810
3811 /*
3812 * For the new vdev, choose with equal probability between the two
3813 * standard paths (ending in either 'a' or 'b') or a random hot spare.
3814 */
3815 if (sav->sav_count != 0 && ztest_random(3) == 0) {
3816 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)];
3817 newvd_is_spare = B_TRUE;
3818
3819 if (newvd->vdev_ops == &vdev_draid_spare_ops)
3820 newvd_is_dspare = B_TRUE;
3821
3822 (void) strlcpy(newpath, newvd->vdev_path, MAXPATHLEN);
3823 } else {
3824 (void) snprintf(newpath, MAXPATHLEN, ztest_dev_template,
3825 ztest_opts.zo_dir, ztest_opts.zo_pool,
3826 top * leaves + leaf);
3827 if (ztest_random(2) == 0)
3828 newpath[strlen(newpath) - 1] = 'b';
3829 newvd = vdev_lookup_by_path(rvd, newpath);
3830 }
3831
3832 if (newvd) {
3833 /*
3834 * Reopen to ensure the vdev's asize field isn't stale.
3835 */
3836 vdev_reopen(newvd);
3837 newsize = vdev_get_min_asize(newvd);
3838 } else {
3839 /*
3840 * Make newsize a little bigger or smaller than oldsize.
3841 * If it's smaller, the attach should fail.
3842 * If it's larger, and we're doing a replace,
3843 * we should get dynamic LUN growth when we're done.
3844 */
3845 newsize = 10 * oldsize / (9 + ztest_random(3));
3846 }
3847
3848 /*
3849 * If pvd is not a mirror or root, the attach should fail with ENOTSUP,
3850 * unless it's a replace; in that case any non-replacing parent is OK.
3851 *
3852 * If newvd is already part of the pool, it should fail with EBUSY.
3853 *
3854 * If newvd is too small, it should fail with EOVERFLOW.
3855 *
3856 * If newvd is a distributed spare and it's being attached to a
3857 * dRAID which is not its parent it should fail with EINVAL.
3858 */
3859 if (pvd->vdev_ops != &vdev_mirror_ops &&
3860 pvd->vdev_ops != &vdev_root_ops && (!replacing ||
3861 pvd->vdev_ops == &vdev_replacing_ops ||
3862 pvd->vdev_ops == &vdev_spare_ops))
3863 expected_error = ENOTSUP;
3864 else if (newvd_is_spare &&
3865 (!replacing || oldvd_is_log || oldvd_is_special))
3866 expected_error = ENOTSUP;
3867 else if (newvd == oldvd)
3868 expected_error = replacing ? 0 : EBUSY;
3869 else if (vdev_lookup_by_path(rvd, newpath) != NULL)
3870 expected_error = EBUSY;
3871 else if (!newvd_is_dspare && newsize < oldsize)
3872 expected_error = EOVERFLOW;
3873 else if (ashift > oldvd->vdev_top->vdev_ashift)
3874 expected_error = EDOM;
3875 else if (newvd_is_dspare && pvd != vdev_draid_spare_get_parent(newvd))
3876 expected_error = EINVAL;
3877 else
3878 expected_error = 0;
3879
3880 spa_config_exit(spa, SCL_ALL, FTAG);
3881
3882 /*
3883 * Build the nvlist describing newpath.
3884 */
3885 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0,
3886 ashift, NULL, 0, 0, 1);
3887
3888 /*
3889 * When supported select either a healing or sequential resilver.
3890 */
3891 boolean_t rebuilding = B_FALSE;
3892 if (pvd->vdev_ops == &vdev_mirror_ops ||
3893 pvd->vdev_ops == &vdev_root_ops) {
3894 rebuilding = !!ztest_random(2);
3895 }
3896
3897 error = spa_vdev_attach(spa, oldguid, root, replacing, rebuilding);
3898
3899 fnvlist_free(root);
3900
3901 /*
3902 * If our parent was the replacing vdev, but the replace completed,
3903 * then instead of failing with ENOTSUP we may either succeed,
3904 * fail with ENODEV, or fail with EOVERFLOW.
3905 */
3906 if (expected_error == ENOTSUP &&
3907 (error == 0 || error == ENODEV || error == EOVERFLOW))
3908 expected_error = error;
3909
3910 /*
3911 * If someone grew the LUN, the replacement may be too small.
3912 */
3913 if (error == EOVERFLOW || error == EBUSY)
3914 expected_error = error;
3915
3916 if (error == ZFS_ERR_CHECKPOINT_EXISTS ||
3917 error == ZFS_ERR_DISCARDING_CHECKPOINT ||
3918 error == ZFS_ERR_RESILVER_IN_PROGRESS ||
3919 error == ZFS_ERR_REBUILD_IN_PROGRESS)
3920 expected_error = error;
3921
3922 if (error != expected_error && expected_error != EBUSY) {
3923 fatal(B_FALSE, "attach (%s %"PRIu64", %s %"PRIu64", %d) "
3924 "returned %d, expected %d",
3925 oldpath, oldsize, newpath,
3926 newsize, replacing, error, expected_error);
3927 }
3928 out:
3929 mutex_exit(&ztest_vdev_lock);
3930
3931 umem_free(oldpath, MAXPATHLEN);
3932 umem_free(newpath, MAXPATHLEN);
3933 }
3934
3935 static void
raidz_scratch_verify(void)3936 raidz_scratch_verify(void)
3937 {
3938 spa_t *spa;
3939 uint64_t write_size, logical_size, offset;
3940 raidz_reflow_scratch_state_t state;
3941 vdev_raidz_expand_t *vre;
3942 vdev_t *raidvd;
3943
3944 ASSERT(raidz_expand_pause_point == RAIDZ_EXPAND_PAUSE_NONE);
3945
3946 if (ztest_scratch_state->zs_raidz_scratch_verify_pause == 0)
3947 return;
3948
3949 kernel_init(SPA_MODE_READ);
3950
3951 mutex_enter(&spa_namespace_lock);
3952 spa = spa_lookup(ztest_opts.zo_pool);
3953 ASSERT(spa);
3954 spa->spa_import_flags |= ZFS_IMPORT_SKIP_MMP;
3955 mutex_exit(&spa_namespace_lock);
3956
3957 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
3958
3959 ASSERT3U(RRSS_GET_OFFSET(&spa->spa_uberblock), !=, UINT64_MAX);
3960
3961 mutex_enter(&ztest_vdev_lock);
3962
3963 spa_config_enter(spa, SCL_ALL, FTAG, RW_READER);
3964
3965 vre = spa->spa_raidz_expand;
3966 if (vre == NULL)
3967 goto out;
3968
3969 raidvd = vdev_lookup_top(spa, vre->vre_vdev_id);
3970 offset = RRSS_GET_OFFSET(&spa->spa_uberblock);
3971 state = RRSS_GET_STATE(&spa->spa_uberblock);
3972 write_size = P2ALIGN_TYPED(VDEV_BOOT_SIZE, 1 << raidvd->vdev_ashift,
3973 uint64_t);
3974 logical_size = write_size * raidvd->vdev_children;
3975
3976 switch (state) {
3977 /*
3978 * Initial state of reflow process. RAIDZ expansion was
3979 * requested by user, but scratch object was not created.
3980 */
3981 case RRSS_SCRATCH_NOT_IN_USE:
3982 ASSERT3U(offset, ==, 0);
3983 break;
3984
3985 /*
3986 * Scratch object was synced and stored in boot area.
3987 */
3988 case RRSS_SCRATCH_VALID:
3989
3990 /*
3991 * Scratch object was synced back to raidz start offset,
3992 * raidz is ready for sector by sector reflow process.
3993 */
3994 case RRSS_SCRATCH_INVALID_SYNCED:
3995
3996 /*
3997 * Scratch object was synced back to raidz start offset
3998 * on zpool importing, raidz is ready for sector by sector
3999 * reflow process.
4000 */
4001 case RRSS_SCRATCH_INVALID_SYNCED_ON_IMPORT:
4002 ASSERT3U(offset, ==, logical_size);
4003 break;
4004
4005 /*
4006 * Sector by sector reflow process started.
4007 */
4008 case RRSS_SCRATCH_INVALID_SYNCED_REFLOW:
4009 ASSERT3U(offset, >=, logical_size);
4010 break;
4011 }
4012
4013 out:
4014 spa_config_exit(spa, SCL_ALL, FTAG);
4015
4016 mutex_exit(&ztest_vdev_lock);
4017
4018 ztest_scratch_state->zs_raidz_scratch_verify_pause = 0;
4019
4020 spa_close(spa, FTAG);
4021 kernel_fini();
4022 }
4023
4024 static void
ztest_scratch_thread(void * arg)4025 ztest_scratch_thread(void *arg)
4026 {
4027 (void) arg;
4028
4029 /* wait up to 10 seconds */
4030 for (int t = 100; t > 0; t -= 1) {
4031 if (raidz_expand_pause_point == RAIDZ_EXPAND_PAUSE_NONE)
4032 thread_exit();
4033
4034 (void) poll(NULL, 0, 100);
4035 }
4036
4037 /* killed when the scratch area progress reached a certain point */
4038 ztest_kill(ztest_shared);
4039 }
4040
4041 /*
4042 * Verify that we can attach raidz device.
4043 */
4044 void
ztest_vdev_raidz_attach(ztest_ds_t * zd,uint64_t id)4045 ztest_vdev_raidz_attach(ztest_ds_t *zd, uint64_t id)
4046 {
4047 (void) zd, (void) id;
4048 ztest_shared_t *zs = ztest_shared;
4049 spa_t *spa = ztest_spa;
4050 uint64_t leaves, raidz_children, newsize, ashift = ztest_get_ashift();
4051 kthread_t *scratch_thread = NULL;
4052 vdev_t *newvd, *pvd;
4053 nvlist_t *root;
4054 char *newpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
4055 int error, expected_error = 0;
4056
4057 mutex_enter(&ztest_vdev_lock);
4058
4059 spa_config_enter(spa, SCL_ALL, FTAG, RW_READER);
4060
4061 /* Only allow attach when raid-kind = 'eraidz' */
4062 if (!ztest_opts.zo_raid_do_expand) {
4063 spa_config_exit(spa, SCL_ALL, FTAG);
4064 goto out;
4065 }
4066
4067 if (ztest_opts.zo_mmp_test) {
4068 spa_config_exit(spa, SCL_ALL, FTAG);
4069 goto out;
4070 }
4071
4072 if (ztest_device_removal_active) {
4073 spa_config_exit(spa, SCL_ALL, FTAG);
4074 goto out;
4075 }
4076
4077 pvd = vdev_lookup_top(spa, 0);
4078
4079 ASSERT(pvd->vdev_ops == &vdev_raidz_ops);
4080
4081 /*
4082 * Get size of a child of the raidz group,
4083 * make sure device is a bit bigger
4084 */
4085 newvd = pvd->vdev_child[ztest_random(pvd->vdev_children)];
4086 newsize = 10 * vdev_get_min_asize(newvd) / (9 + ztest_random(2));
4087
4088 /*
4089 * Get next attached leaf id
4090 */
4091 raidz_children = ztest_get_raidz_children(spa);
4092 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * raidz_children;
4093 zs->zs_vdev_next_leaf = spa_num_top_vdevs(spa) * leaves;
4094
4095 if (spa->spa_raidz_expand)
4096 expected_error = ZFS_ERR_RAIDZ_EXPAND_IN_PROGRESS;
4097
4098 spa_config_exit(spa, SCL_ALL, FTAG);
4099
4100 /*
4101 * Path to vdev to be attached
4102 */
4103 (void) snprintf(newpath, MAXPATHLEN, ztest_dev_template,
4104 ztest_opts.zo_dir, ztest_opts.zo_pool, zs->zs_vdev_next_leaf);
4105
4106 /*
4107 * Build the nvlist describing newpath.
4108 */
4109 root = make_vdev_root(newpath, NULL, NULL, newsize, ashift, NULL,
4110 0, 0, 1);
4111
4112 /*
4113 * 50% of the time, set raidz_expand_pause_point to cause
4114 * raidz_reflow_scratch_sync() to pause at a certain point and
4115 * then kill the test after 10 seconds so raidz_scratch_verify()
4116 * can confirm consistency when the pool is imported.
4117 */
4118 if (ztest_random(2) == 0 && expected_error == 0) {
4119 raidz_expand_pause_point =
4120 ztest_random(RAIDZ_EXPAND_PAUSE_SCRATCH_POST_REFLOW_2) + 1;
4121 scratch_thread = thread_create(NULL, 0, ztest_scratch_thread,
4122 ztest_shared, 0, NULL, TS_RUN | TS_JOINABLE, defclsyspri);
4123 }
4124
4125 error = spa_vdev_attach(spa, pvd->vdev_guid, root, B_FALSE, B_FALSE);
4126
4127 nvlist_free(root);
4128
4129 if (error == EOVERFLOW || error == ENXIO ||
4130 error == ZFS_ERR_CHECKPOINT_EXISTS ||
4131 error == ZFS_ERR_DISCARDING_CHECKPOINT)
4132 expected_error = error;
4133
4134 if (error != 0 && error != expected_error) {
4135 fatal(0, "raidz attach (%s %"PRIu64") returned %d, expected %d",
4136 newpath, newsize, error, expected_error);
4137 }
4138
4139 if (raidz_expand_pause_point) {
4140 if (error != 0) {
4141 /*
4142 * Do not verify scratch object in case of error
4143 * returned by vdev attaching.
4144 */
4145 raidz_expand_pause_point = RAIDZ_EXPAND_PAUSE_NONE;
4146 }
4147
4148 VERIFY0(thread_join(scratch_thread));
4149 }
4150 out:
4151 mutex_exit(&ztest_vdev_lock);
4152
4153 umem_free(newpath, MAXPATHLEN);
4154 }
4155
4156 void
ztest_device_removal(ztest_ds_t * zd,uint64_t id)4157 ztest_device_removal(ztest_ds_t *zd, uint64_t id)
4158 {
4159 (void) zd, (void) id;
4160 spa_t *spa = ztest_spa;
4161 vdev_t *vd;
4162 uint64_t guid;
4163 int error;
4164
4165 mutex_enter(&ztest_vdev_lock);
4166
4167 if (ztest_device_removal_active) {
4168 mutex_exit(&ztest_vdev_lock);
4169 return;
4170 }
4171
4172 /*
4173 * Remove a random top-level vdev and wait for removal to finish.
4174 */
4175 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
4176 vd = vdev_lookup_top(spa, ztest_random_vdev_top(spa, B_FALSE));
4177 guid = vd->vdev_guid;
4178 spa_config_exit(spa, SCL_VDEV, FTAG);
4179
4180 error = spa_vdev_remove(spa, guid, B_FALSE);
4181 if (error == 0) {
4182 ztest_device_removal_active = B_TRUE;
4183 mutex_exit(&ztest_vdev_lock);
4184
4185 /*
4186 * spa->spa_vdev_removal is created in a sync task that
4187 * is initiated via dsl_sync_task_nowait(). Since the
4188 * task may not run before spa_vdev_remove() returns, we
4189 * must wait at least 1 txg to ensure that the removal
4190 * struct has been created.
4191 */
4192 txg_wait_synced(spa_get_dsl(spa), 0);
4193
4194 while (spa->spa_removing_phys.sr_state == DSS_SCANNING)
4195 txg_wait_synced(spa_get_dsl(spa), 0);
4196 } else {
4197 mutex_exit(&ztest_vdev_lock);
4198 return;
4199 }
4200
4201 /*
4202 * The pool needs to be scrubbed after completing device removal.
4203 * Failure to do so may result in checksum errors due to the
4204 * strategy employed by ztest_fault_inject() when selecting which
4205 * offset are redundant and can be damaged.
4206 */
4207 error = spa_scan(spa, POOL_SCAN_SCRUB);
4208 if (error == 0) {
4209 while (dsl_scan_scrubbing(spa_get_dsl(spa)))
4210 txg_wait_synced(spa_get_dsl(spa), 0);
4211 }
4212
4213 mutex_enter(&ztest_vdev_lock);
4214 ztest_device_removal_active = B_FALSE;
4215 mutex_exit(&ztest_vdev_lock);
4216 }
4217
4218 /*
4219 * Callback function which expands the physical size of the vdev.
4220 */
4221 static vdev_t *
grow_vdev(vdev_t * vd,void * arg)4222 grow_vdev(vdev_t *vd, void *arg)
4223 {
4224 spa_t *spa __maybe_unused = vd->vdev_spa;
4225 size_t *newsize = arg;
4226 size_t fsize;
4227 int fd;
4228
4229 ASSERT3S(spa_config_held(spa, SCL_STATE, RW_READER), ==, SCL_STATE);
4230 ASSERT(vd->vdev_ops->vdev_op_leaf);
4231
4232 if ((fd = open(vd->vdev_path, O_RDWR)) == -1)
4233 return (vd);
4234
4235 fsize = lseek(fd, 0, SEEK_END);
4236 VERIFY0(ftruncate(fd, *newsize));
4237
4238 if (ztest_opts.zo_verbose >= 6) {
4239 (void) printf("%s grew from %lu to %lu bytes\n",
4240 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize);
4241 }
4242 (void) close(fd);
4243 return (NULL);
4244 }
4245
4246 /*
4247 * Callback function which expands a given vdev by calling vdev_online().
4248 */
4249 static vdev_t *
online_vdev(vdev_t * vd,void * arg)4250 online_vdev(vdev_t *vd, void *arg)
4251 {
4252 (void) arg;
4253 spa_t *spa = vd->vdev_spa;
4254 vdev_t *tvd = vd->vdev_top;
4255 uint64_t guid = vd->vdev_guid;
4256 uint64_t generation = spa->spa_config_generation + 1;
4257 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
4258 int error;
4259
4260 ASSERT3S(spa_config_held(spa, SCL_STATE, RW_READER), ==, SCL_STATE);
4261 ASSERT(vd->vdev_ops->vdev_op_leaf);
4262
4263 /* Calling vdev_online will initialize the new metaslabs */
4264 spa_config_exit(spa, SCL_STATE, spa);
4265 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate);
4266 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
4267
4268 /*
4269 * If vdev_online returned an error or the underlying vdev_open
4270 * failed then we abort the expand. The only way to know that
4271 * vdev_open fails is by checking the returned newstate.
4272 */
4273 if (error || newstate != VDEV_STATE_HEALTHY) {
4274 if (ztest_opts.zo_verbose >= 5) {
4275 (void) printf("Unable to expand vdev, state %u, "
4276 "error %d\n", newstate, error);
4277 }
4278 return (vd);
4279 }
4280 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY);
4281
4282 /*
4283 * Since we dropped the lock we need to ensure that we're
4284 * still talking to the original vdev. It's possible this
4285 * vdev may have been detached/replaced while we were
4286 * trying to online it.
4287 */
4288 if (generation != spa->spa_config_generation) {
4289 if (ztest_opts.zo_verbose >= 5) {
4290 (void) printf("vdev configuration has changed, "
4291 "guid %"PRIu64", state %"PRIu64", "
4292 "expected gen %"PRIu64", got gen %"PRIu64"\n",
4293 guid,
4294 tvd->vdev_state,
4295 generation,
4296 spa->spa_config_generation);
4297 }
4298 return (vd);
4299 }
4300 return (NULL);
4301 }
4302
4303 /*
4304 * Traverse the vdev tree calling the supplied function.
4305 * We continue to walk the tree until we either have walked all
4306 * children or we receive a non-NULL return from the callback.
4307 * If a NULL callback is passed, then we just return back the first
4308 * leaf vdev we encounter.
4309 */
4310 static vdev_t *
vdev_walk_tree(vdev_t * vd,vdev_t * (* func)(vdev_t *,void *),void * arg)4311 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
4312 {
4313 uint_t c;
4314
4315 if (vd->vdev_ops->vdev_op_leaf) {
4316 if (func == NULL)
4317 return (vd);
4318 else
4319 return (func(vd, arg));
4320 }
4321
4322 for (c = 0; c < vd->vdev_children; c++) {
4323 vdev_t *cvd = vd->vdev_child[c];
4324 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL)
4325 return (cvd);
4326 }
4327 return (NULL);
4328 }
4329
4330 /*
4331 * Verify that dynamic LUN growth works as expected.
4332 */
4333 void
ztest_vdev_LUN_growth(ztest_ds_t * zd,uint64_t id)4334 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
4335 {
4336 (void) zd, (void) id;
4337 spa_t *spa = ztest_spa;
4338 vdev_t *vd, *tvd;
4339 metaslab_class_t *mc;
4340 metaslab_group_t *mg;
4341 size_t psize, newsize;
4342 uint64_t top;
4343 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
4344
4345 mutex_enter(&ztest_checkpoint_lock);
4346 mutex_enter(&ztest_vdev_lock);
4347 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
4348
4349 /*
4350 * If there is a vdev removal in progress, it could complete while
4351 * we are running, in which case we would not be able to verify
4352 * that the metaslab_class space increased (because it decreases
4353 * when the device removal completes).
4354 */
4355 if (ztest_device_removal_active) {
4356 spa_config_exit(spa, SCL_STATE, spa);
4357 mutex_exit(&ztest_vdev_lock);
4358 mutex_exit(&ztest_checkpoint_lock);
4359 return;
4360 }
4361
4362 /*
4363 * If we are under raidz expansion, the test can failed because the
4364 * metaslabs count will not increase immediately after the vdev is
4365 * expanded. It will happen only after raidz expansion completion.
4366 */
4367 if (spa->spa_raidz_expand) {
4368 spa_config_exit(spa, SCL_STATE, spa);
4369 mutex_exit(&ztest_vdev_lock);
4370 mutex_exit(&ztest_checkpoint_lock);
4371 return;
4372 }
4373
4374 top = ztest_random_vdev_top(spa, B_TRUE);
4375
4376 tvd = spa->spa_root_vdev->vdev_child[top];
4377 mg = tvd->vdev_mg;
4378 mc = mg->mg_class;
4379 old_ms_count = tvd->vdev_ms_count;
4380 old_class_space = metaslab_class_get_space(mc);
4381
4382 /*
4383 * Determine the size of the first leaf vdev associated with
4384 * our top-level device.
4385 */
4386 vd = vdev_walk_tree(tvd, NULL, NULL);
4387 ASSERT3P(vd, !=, NULL);
4388 ASSERT(vd->vdev_ops->vdev_op_leaf);
4389
4390 psize = vd->vdev_psize;
4391
4392 /*
4393 * We only try to expand the vdev if it's healthy, less than 4x its
4394 * original size, and it has a valid psize.
4395 */
4396 if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
4397 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) {
4398 spa_config_exit(spa, SCL_STATE, spa);
4399 mutex_exit(&ztest_vdev_lock);
4400 mutex_exit(&ztest_checkpoint_lock);
4401 return;
4402 }
4403 ASSERT3U(psize, >, 0);
4404 newsize = psize + MAX(psize / 8, SPA_MAXBLOCKSIZE);
4405 ASSERT3U(newsize, >, psize);
4406
4407 if (ztest_opts.zo_verbose >= 6) {
4408 (void) printf("Expanding LUN %s from %lu to %lu\n",
4409 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize);
4410 }
4411
4412 /*
4413 * Growing the vdev is a two step process:
4414 * 1). expand the physical size (i.e. relabel)
4415 * 2). online the vdev to create the new metaslabs
4416 */
4417 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL ||
4418 vdev_walk_tree(tvd, online_vdev, NULL) != NULL ||
4419 tvd->vdev_state != VDEV_STATE_HEALTHY) {
4420 if (ztest_opts.zo_verbose >= 5) {
4421 (void) printf("Could not expand LUN because "
4422 "the vdev configuration changed.\n");
4423 }
4424 spa_config_exit(spa, SCL_STATE, spa);
4425 mutex_exit(&ztest_vdev_lock);
4426 mutex_exit(&ztest_checkpoint_lock);
4427 return;
4428 }
4429
4430 spa_config_exit(spa, SCL_STATE, spa);
4431
4432 /*
4433 * Expanding the LUN will update the config asynchronously,
4434 * thus we must wait for the async thread to complete any
4435 * pending tasks before proceeding.
4436 */
4437 for (;;) {
4438 boolean_t done;
4439 mutex_enter(&spa->spa_async_lock);
4440 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks);
4441 mutex_exit(&spa->spa_async_lock);
4442 if (done)
4443 break;
4444 txg_wait_synced(spa_get_dsl(spa), 0);
4445 (void) poll(NULL, 0, 100);
4446 }
4447
4448 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
4449
4450 tvd = spa->spa_root_vdev->vdev_child[top];
4451 new_ms_count = tvd->vdev_ms_count;
4452 new_class_space = metaslab_class_get_space(mc);
4453
4454 if (tvd->vdev_mg != mg || mg->mg_class != mc) {
4455 if (ztest_opts.zo_verbose >= 5) {
4456 (void) printf("Could not verify LUN expansion due to "
4457 "intervening vdev offline or remove.\n");
4458 }
4459 spa_config_exit(spa, SCL_STATE, spa);
4460 mutex_exit(&ztest_vdev_lock);
4461 mutex_exit(&ztest_checkpoint_lock);
4462 return;
4463 }
4464
4465 /*
4466 * Make sure we were able to grow the vdev.
4467 */
4468 if (new_ms_count <= old_ms_count) {
4469 fatal(B_FALSE,
4470 "LUN expansion failed: ms_count %"PRIu64" < %"PRIu64"\n",
4471 old_ms_count, new_ms_count);
4472 }
4473
4474 /*
4475 * Make sure we were able to grow the pool.
4476 */
4477 if (new_class_space <= old_class_space) {
4478 fatal(B_FALSE,
4479 "LUN expansion failed: class_space %"PRIu64" < %"PRIu64"\n",
4480 old_class_space, new_class_space);
4481 }
4482
4483 if (ztest_opts.zo_verbose >= 5) {
4484 char oldnumbuf[NN_NUMBUF_SZ], newnumbuf[NN_NUMBUF_SZ];
4485
4486 nicenum(old_class_space, oldnumbuf, sizeof (oldnumbuf));
4487 nicenum(new_class_space, newnumbuf, sizeof (newnumbuf));
4488 (void) printf("%s grew from %s to %s\n",
4489 spa->spa_name, oldnumbuf, newnumbuf);
4490 }
4491
4492 spa_config_exit(spa, SCL_STATE, spa);
4493 mutex_exit(&ztest_vdev_lock);
4494 mutex_exit(&ztest_checkpoint_lock);
4495 }
4496
4497 /*
4498 * Verify that dmu_objset_{create,destroy,open,close} work as expected.
4499 */
4500 static void
ztest_objset_create_cb(objset_t * os,void * arg,cred_t * cr,dmu_tx_t * tx)4501 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
4502 {
4503 (void) arg, (void) cr;
4504
4505 /*
4506 * Create the objects common to all ztest datasets.
4507 */
4508 VERIFY0(zap_create_claim(os, ZTEST_DIROBJ,
4509 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx));
4510 }
4511
4512 static int
ztest_dataset_create(char * dsname)4513 ztest_dataset_create(char *dsname)
4514 {
4515 int err;
4516 uint64_t rand;
4517 dsl_crypto_params_t *dcp = NULL;
4518
4519 /*
4520 * 50% of the time, we create encrypted datasets
4521 * using a random cipher suite and a hard-coded
4522 * wrapping key.
4523 */
4524 rand = ztest_random(2);
4525 if (rand != 0) {
4526 nvlist_t *crypto_args = fnvlist_alloc();
4527 nvlist_t *props = fnvlist_alloc();
4528
4529 /* slight bias towards the default cipher suite */
4530 rand = ztest_random(ZIO_CRYPT_FUNCTIONS);
4531 if (rand < ZIO_CRYPT_AES_128_CCM)
4532 rand = ZIO_CRYPT_ON;
4533
4534 fnvlist_add_uint64(props,
4535 zfs_prop_to_name(ZFS_PROP_ENCRYPTION), rand);
4536 fnvlist_add_uint8_array(crypto_args, "wkeydata",
4537 (uint8_t *)ztest_wkeydata, WRAPPING_KEY_LEN);
4538
4539 /*
4540 * These parameters aren't really used by the kernel. They
4541 * are simply stored so that userspace knows how to load
4542 * the wrapping key.
4543 */
4544 fnvlist_add_uint64(props,
4545 zfs_prop_to_name(ZFS_PROP_KEYFORMAT), ZFS_KEYFORMAT_RAW);
4546 fnvlist_add_string(props,
4547 zfs_prop_to_name(ZFS_PROP_KEYLOCATION), "prompt");
4548 fnvlist_add_uint64(props,
4549 zfs_prop_to_name(ZFS_PROP_PBKDF2_SALT), 0ULL);
4550 fnvlist_add_uint64(props,
4551 zfs_prop_to_name(ZFS_PROP_PBKDF2_ITERS), 0ULL);
4552
4553 VERIFY0(dsl_crypto_params_create_nvlist(DCP_CMD_NONE, props,
4554 crypto_args, &dcp));
4555
4556 /*
4557 * Cycle through all available encryption implementations
4558 * to verify interoperability.
4559 */
4560 VERIFY0(gcm_impl_set("cycle"));
4561 VERIFY0(aes_impl_set("cycle"));
4562
4563 fnvlist_free(crypto_args);
4564 fnvlist_free(props);
4565 }
4566
4567 err = dmu_objset_create(dsname, DMU_OST_OTHER, 0, dcp,
4568 ztest_objset_create_cb, NULL);
4569 dsl_crypto_params_free(dcp, !!err);
4570
4571 rand = ztest_random(100);
4572 if (err || rand < 80)
4573 return (err);
4574
4575 if (ztest_opts.zo_verbose >= 5)
4576 (void) printf("Setting dataset %s to sync always\n", dsname);
4577 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC,
4578 ZFS_SYNC_ALWAYS, B_FALSE));
4579 }
4580
4581 static int
ztest_objset_destroy_cb(const char * name,void * arg)4582 ztest_objset_destroy_cb(const char *name, void *arg)
4583 {
4584 (void) arg;
4585 objset_t *os;
4586 dmu_object_info_t doi;
4587 int error;
4588
4589 /*
4590 * Verify that the dataset contains a directory object.
4591 */
4592 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
4593 B_TRUE, FTAG, &os));
4594 error = dmu_object_info(os, ZTEST_DIROBJ, &doi);
4595 if (error != ENOENT) {
4596 /* We could have crashed in the middle of destroying it */
4597 ASSERT0(error);
4598 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER);
4599 ASSERT3S(doi.doi_physical_blocks_512, >=, 0);
4600 }
4601 dmu_objset_disown(os, B_TRUE, FTAG);
4602
4603 /*
4604 * Destroy the dataset.
4605 */
4606 if (strchr(name, '@') != NULL) {
4607 error = dsl_destroy_snapshot(name, B_TRUE);
4608 if (error != ECHRNG) {
4609 /*
4610 * The program was executed, but encountered a runtime
4611 * error, such as insufficient slop, or a hold on the
4612 * dataset.
4613 */
4614 ASSERT0(error);
4615 }
4616 } else {
4617 error = dsl_destroy_head(name);
4618 if (error == ENOSPC) {
4619 /* There could be checkpoint or insufficient slop */
4620 ztest_record_enospc(FTAG);
4621 } else if (error != EBUSY) {
4622 /* There could be a hold on this dataset */
4623 ASSERT0(error);
4624 }
4625 }
4626 return (0);
4627 }
4628
4629 static boolean_t
ztest_snapshot_create(char * osname,uint64_t id)4630 ztest_snapshot_create(char *osname, uint64_t id)
4631 {
4632 char snapname[ZFS_MAX_DATASET_NAME_LEN];
4633 int error;
4634
4635 (void) snprintf(snapname, sizeof (snapname), "%"PRIu64"", id);
4636
4637 error = dmu_objset_snapshot_one(osname, snapname);
4638 if (error == ENOSPC) {
4639 ztest_record_enospc(FTAG);
4640 return (B_FALSE);
4641 }
4642 if (error != 0 && error != EEXIST && error != ECHRNG) {
4643 fatal(B_FALSE, "ztest_snapshot_create(%s@%s) = %d", osname,
4644 snapname, error);
4645 }
4646 return (B_TRUE);
4647 }
4648
4649 static boolean_t
ztest_snapshot_destroy(char * osname,uint64_t id)4650 ztest_snapshot_destroy(char *osname, uint64_t id)
4651 {
4652 char snapname[ZFS_MAX_DATASET_NAME_LEN];
4653 int error;
4654
4655 (void) snprintf(snapname, sizeof (snapname), "%s@%"PRIu64"",
4656 osname, id);
4657
4658 error = dsl_destroy_snapshot(snapname, B_FALSE);
4659 if (error != 0 && error != ENOENT && error != ECHRNG)
4660 fatal(B_FALSE, "ztest_snapshot_destroy(%s) = %d",
4661 snapname, error);
4662 return (B_TRUE);
4663 }
4664
4665 void
ztest_dmu_objset_create_destroy(ztest_ds_t * zd,uint64_t id)4666 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
4667 {
4668 (void) zd;
4669 ztest_ds_t *zdtmp;
4670 int iters;
4671 int error;
4672 objset_t *os, *os2;
4673 char name[ZFS_MAX_DATASET_NAME_LEN];
4674 zilog_t *zilog;
4675 int i;
4676
4677 zdtmp = umem_alloc(sizeof (ztest_ds_t), UMEM_NOFAIL);
4678
4679 (void) pthread_rwlock_rdlock(&ztest_name_lock);
4680
4681 (void) snprintf(name, sizeof (name), "%s/temp_%"PRIu64"",
4682 ztest_opts.zo_pool, id);
4683
4684 /*
4685 * If this dataset exists from a previous run, process its replay log
4686 * half of the time. If we don't replay it, then dsl_destroy_head()
4687 * (invoked from ztest_objset_destroy_cb()) should just throw it away.
4688 */
4689 if (ztest_random(2) == 0 &&
4690 ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE,
4691 B_TRUE, FTAG, &os) == 0) {
4692 ztest_zd_init(zdtmp, NULL, os);
4693 zil_replay(os, zdtmp, ztest_replay_vector);
4694 ztest_zd_fini(zdtmp);
4695 dmu_objset_disown(os, B_TRUE, FTAG);
4696 }
4697
4698 /*
4699 * There may be an old instance of the dataset we're about to
4700 * create lying around from a previous run. If so, destroy it
4701 * and all of its snapshots.
4702 */
4703 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
4704 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
4705
4706 /*
4707 * Verify that the destroyed dataset is no longer in the namespace.
4708 * It may still be present if the destroy above fails with ENOSPC.
4709 */
4710 error = ztest_dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, B_TRUE,
4711 FTAG, &os);
4712 if (error == 0) {
4713 dmu_objset_disown(os, B_TRUE, FTAG);
4714 ztest_record_enospc(FTAG);
4715 goto out;
4716 }
4717 VERIFY3U(ENOENT, ==, error);
4718
4719 /*
4720 * Verify that we can create a new dataset.
4721 */
4722 error = ztest_dataset_create(name);
4723 if (error) {
4724 if (error == ENOSPC) {
4725 ztest_record_enospc(FTAG);
4726 goto out;
4727 }
4728 fatal(B_FALSE, "dmu_objset_create(%s) = %d", name, error);
4729 }
4730
4731 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, B_TRUE,
4732 FTAG, &os));
4733
4734 ztest_zd_init(zdtmp, NULL, os);
4735
4736 /*
4737 * Open the intent log for it.
4738 */
4739 zilog = zil_open(os, ztest_get_data, NULL);
4740
4741 /*
4742 * Put some objects in there, do a little I/O to them,
4743 * and randomly take a couple of snapshots along the way.
4744 */
4745 iters = ztest_random(5);
4746 for (i = 0; i < iters; i++) {
4747 ztest_dmu_object_alloc_free(zdtmp, id);
4748 if (ztest_random(iters) == 0)
4749 (void) ztest_snapshot_create(name, i);
4750 }
4751
4752 /*
4753 * Verify that we cannot create an existing dataset.
4754 */
4755 VERIFY3U(EEXIST, ==,
4756 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL, NULL));
4757
4758 /*
4759 * Verify that we can hold an objset that is also owned.
4760 */
4761 VERIFY0(dmu_objset_hold(name, FTAG, &os2));
4762 dmu_objset_rele(os2, FTAG);
4763
4764 /*
4765 * Verify that we cannot own an objset that is already owned.
4766 */
4767 VERIFY3U(EBUSY, ==, ztest_dmu_objset_own(name, DMU_OST_OTHER,
4768 B_FALSE, B_TRUE, FTAG, &os2));
4769
4770 zil_close(zilog);
4771 dmu_objset_disown(os, B_TRUE, FTAG);
4772 ztest_zd_fini(zdtmp);
4773 out:
4774 (void) pthread_rwlock_unlock(&ztest_name_lock);
4775
4776 umem_free(zdtmp, sizeof (ztest_ds_t));
4777 }
4778
4779 /*
4780 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
4781 */
4782 void
ztest_dmu_snapshot_create_destroy(ztest_ds_t * zd,uint64_t id)4783 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
4784 {
4785 (void) pthread_rwlock_rdlock(&ztest_name_lock);
4786 (void) ztest_snapshot_destroy(zd->zd_name, id);
4787 (void) ztest_snapshot_create(zd->zd_name, id);
4788 (void) pthread_rwlock_unlock(&ztest_name_lock);
4789 }
4790
4791 /*
4792 * Cleanup non-standard snapshots and clones.
4793 */
4794 static void
ztest_dsl_dataset_cleanup(char * osname,uint64_t id)4795 ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
4796 {
4797 char *snap1name;
4798 char *clone1name;
4799 char *snap2name;
4800 char *clone2name;
4801 char *snap3name;
4802 int error;
4803
4804 snap1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4805 clone1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4806 snap2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4807 clone2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4808 snap3name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4809
4810 (void) snprintf(snap1name, ZFS_MAX_DATASET_NAME_LEN, "%s@s1_%"PRIu64"",
4811 osname, id);
4812 (void) snprintf(clone1name, ZFS_MAX_DATASET_NAME_LEN, "%s/c1_%"PRIu64"",
4813 osname, id);
4814 (void) snprintf(snap2name, ZFS_MAX_DATASET_NAME_LEN, "%s@s2_%"PRIu64"",
4815 clone1name, id);
4816 (void) snprintf(clone2name, ZFS_MAX_DATASET_NAME_LEN, "%s/c2_%"PRIu64"",
4817 osname, id);
4818 (void) snprintf(snap3name, ZFS_MAX_DATASET_NAME_LEN, "%s@s3_%"PRIu64"",
4819 clone1name, id);
4820
4821 error = dsl_destroy_head(clone2name);
4822 if (error && error != ENOENT)
4823 fatal(B_FALSE, "dsl_destroy_head(%s) = %d", clone2name, error);
4824 error = dsl_destroy_snapshot(snap3name, B_FALSE);
4825 if (error && error != ENOENT)
4826 fatal(B_FALSE, "dsl_destroy_snapshot(%s) = %d",
4827 snap3name, error);
4828 error = dsl_destroy_snapshot(snap2name, B_FALSE);
4829 if (error && error != ENOENT)
4830 fatal(B_FALSE, "dsl_destroy_snapshot(%s) = %d",
4831 snap2name, error);
4832 error = dsl_destroy_head(clone1name);
4833 if (error && error != ENOENT)
4834 fatal(B_FALSE, "dsl_destroy_head(%s) = %d", clone1name, error);
4835 error = dsl_destroy_snapshot(snap1name, B_FALSE);
4836 if (error && error != ENOENT)
4837 fatal(B_FALSE, "dsl_destroy_snapshot(%s) = %d",
4838 snap1name, error);
4839
4840 umem_free(snap1name, ZFS_MAX_DATASET_NAME_LEN);
4841 umem_free(clone1name, ZFS_MAX_DATASET_NAME_LEN);
4842 umem_free(snap2name, ZFS_MAX_DATASET_NAME_LEN);
4843 umem_free(clone2name, ZFS_MAX_DATASET_NAME_LEN);
4844 umem_free(snap3name, ZFS_MAX_DATASET_NAME_LEN);
4845 }
4846
4847 /*
4848 * Verify dsl_dataset_promote handles EBUSY
4849 */
4850 void
ztest_dsl_dataset_promote_busy(ztest_ds_t * zd,uint64_t id)4851 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
4852 {
4853 objset_t *os;
4854 char *snap1name;
4855 char *clone1name;
4856 char *snap2name;
4857 char *clone2name;
4858 char *snap3name;
4859 char *osname = zd->zd_name;
4860 int error;
4861
4862 snap1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4863 clone1name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4864 snap2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4865 clone2name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4866 snap3name = umem_alloc(ZFS_MAX_DATASET_NAME_LEN, UMEM_NOFAIL);
4867
4868 (void) pthread_rwlock_rdlock(&ztest_name_lock);
4869
4870 ztest_dsl_dataset_cleanup(osname, id);
4871
4872 (void) snprintf(snap1name, ZFS_MAX_DATASET_NAME_LEN, "%s@s1_%"PRIu64"",
4873 osname, id);
4874 (void) snprintf(clone1name, ZFS_MAX_DATASET_NAME_LEN, "%s/c1_%"PRIu64"",
4875 osname, id);
4876 (void) snprintf(snap2name, ZFS_MAX_DATASET_NAME_LEN, "%s@s2_%"PRIu64"",
4877 clone1name, id);
4878 (void) snprintf(clone2name, ZFS_MAX_DATASET_NAME_LEN, "%s/c2_%"PRIu64"",
4879 osname, id);
4880 (void) snprintf(snap3name, ZFS_MAX_DATASET_NAME_LEN, "%s@s3_%"PRIu64"",
4881 clone1name, id);
4882
4883 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1);
4884 if (error && error != EEXIST) {
4885 if (error == ENOSPC) {
4886 ztest_record_enospc(FTAG);
4887 goto out;
4888 }
4889 fatal(B_FALSE, "dmu_take_snapshot(%s) = %d", snap1name, error);
4890 }
4891
4892 error = dmu_objset_clone(clone1name, snap1name);
4893 if (error) {
4894 if (error == ENOSPC) {
4895 ztest_record_enospc(FTAG);
4896 goto out;
4897 }
4898 fatal(B_FALSE, "dmu_objset_create(%s) = %d", clone1name, error);
4899 }
4900
4901 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1);
4902 if (error && error != EEXIST) {
4903 if (error == ENOSPC) {
4904 ztest_record_enospc(FTAG);
4905 goto out;
4906 }
4907 fatal(B_FALSE, "dmu_open_snapshot(%s) = %d", snap2name, error);
4908 }
4909
4910 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1);
4911 if (error && error != EEXIST) {
4912 if (error == ENOSPC) {
4913 ztest_record_enospc(FTAG);
4914 goto out;
4915 }
4916 fatal(B_FALSE, "dmu_open_snapshot(%s) = %d", snap3name, error);
4917 }
4918
4919 error = dmu_objset_clone(clone2name, snap3name);
4920 if (error) {
4921 if (error == ENOSPC) {
4922 ztest_record_enospc(FTAG);
4923 goto out;
4924 }
4925 fatal(B_FALSE, "dmu_objset_create(%s) = %d", clone2name, error);
4926 }
4927
4928 error = ztest_dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, B_TRUE,
4929 FTAG, &os);
4930 if (error)
4931 fatal(B_FALSE, "dmu_objset_own(%s) = %d", snap2name, error);
4932 error = dsl_dataset_promote(clone2name, NULL);
4933 if (error == ENOSPC) {
4934 dmu_objset_disown(os, B_TRUE, FTAG);
4935 ztest_record_enospc(FTAG);
4936 goto out;
4937 }
4938 if (error != EBUSY)
4939 fatal(B_FALSE, "dsl_dataset_promote(%s), %d, not EBUSY",
4940 clone2name, error);
4941 dmu_objset_disown(os, B_TRUE, FTAG);
4942
4943 out:
4944 ztest_dsl_dataset_cleanup(osname, id);
4945
4946 (void) pthread_rwlock_unlock(&ztest_name_lock);
4947
4948 umem_free(snap1name, ZFS_MAX_DATASET_NAME_LEN);
4949 umem_free(clone1name, ZFS_MAX_DATASET_NAME_LEN);
4950 umem_free(snap2name, ZFS_MAX_DATASET_NAME_LEN);
4951 umem_free(clone2name, ZFS_MAX_DATASET_NAME_LEN);
4952 umem_free(snap3name, ZFS_MAX_DATASET_NAME_LEN);
4953 }
4954
4955 #undef OD_ARRAY_SIZE
4956 #define OD_ARRAY_SIZE 4
4957
4958 /*
4959 * Verify that dmu_object_{alloc,free} work as expected.
4960 */
4961 void
ztest_dmu_object_alloc_free(ztest_ds_t * zd,uint64_t id)4962 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id)
4963 {
4964 ztest_od_t *od;
4965 int batchsize;
4966 int size;
4967 int b;
4968
4969 size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
4970 od = umem_alloc(size, UMEM_NOFAIL);
4971 batchsize = OD_ARRAY_SIZE;
4972
4973 for (b = 0; b < batchsize; b++)
4974 ztest_od_init(od + b, id, FTAG, b, DMU_OT_UINT64_OTHER,
4975 0, 0, 0);
4976
4977 /*
4978 * Destroy the previous batch of objects, create a new batch,
4979 * and do some I/O on the new objects.
4980 */
4981 if (ztest_object_init(zd, od, size, B_TRUE) != 0) {
4982 zd->zd_od = NULL;
4983 umem_free(od, size);
4984 return;
4985 }
4986
4987 while (ztest_random(4 * batchsize) != 0)
4988 ztest_io(zd, od[ztest_random(batchsize)].od_object,
4989 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4990
4991 umem_free(od, size);
4992 }
4993
4994 /*
4995 * Rewind the global allocator to verify object allocation backfilling.
4996 */
4997 void
ztest_dmu_object_next_chunk(ztest_ds_t * zd,uint64_t id)4998 ztest_dmu_object_next_chunk(ztest_ds_t *zd, uint64_t id)
4999 {
5000 (void) id;
5001 objset_t *os = zd->zd_os;
5002 uint_t dnodes_per_chunk = 1 << dmu_object_alloc_chunk_shift;
5003 uint64_t object;
5004
5005 /*
5006 * Rewind the global allocator randomly back to a lower object number
5007 * to force backfilling and reclamation of recently freed dnodes.
5008 */
5009 mutex_enter(&os->os_obj_lock);
5010 object = ztest_random(os->os_obj_next_chunk);
5011 os->os_obj_next_chunk = P2ALIGN_TYPED(object, dnodes_per_chunk,
5012 uint64_t);
5013 mutex_exit(&os->os_obj_lock);
5014 }
5015
5016 #undef OD_ARRAY_SIZE
5017 #define OD_ARRAY_SIZE 2
5018
5019 /*
5020 * Verify that dmu_{read,write} work as expected.
5021 */
5022 void
ztest_dmu_read_write(ztest_ds_t * zd,uint64_t id)5023 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
5024 {
5025 int size;
5026 ztest_od_t *od;
5027
5028 objset_t *os = zd->zd_os;
5029 size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
5030 od = umem_alloc(size, UMEM_NOFAIL);
5031 dmu_tx_t *tx;
5032 int freeit, error;
5033 uint64_t i, n, s, txg;
5034 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT;
5035 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
5036 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t);
5037 uint64_t regions = 997;
5038 uint64_t stride = 123456789ULL;
5039 uint64_t width = 40;
5040 int free_percent = 5;
5041
5042 /*
5043 * This test uses two objects, packobj and bigobj, that are always
5044 * updated together (i.e. in the same tx) so that their contents are
5045 * in sync and can be compared. Their contents relate to each other
5046 * in a simple way: packobj is a dense array of 'bufwad' structures,
5047 * while bigobj is a sparse array of the same bufwads. Specifically,
5048 * for any index n, there are three bufwads that should be identical:
5049 *
5050 * packobj, at offset n * sizeof (bufwad_t)
5051 * bigobj, at the head of the nth chunk
5052 * bigobj, at the tail of the nth chunk
5053 *
5054 * The chunk size is arbitrary. It doesn't have to be a power of two,
5055 * and it doesn't have any relation to the object blocksize.
5056 * The only requirement is that it can hold at least two bufwads.
5057 *
5058 * Normally, we write the bufwad to each of these locations.
5059 * However, free_percent of the time we instead write zeroes to
5060 * packobj and perform a dmu_free_range() on bigobj. By comparing
5061 * bigobj to packobj, we can verify that the DMU is correctly
5062 * tracking which parts of an object are allocated and free,
5063 * and that the contents of the allocated blocks are correct.
5064 */
5065
5066 /*
5067 * Read the directory info. If it's the first time, set things up.
5068 */
5069 ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, chunksize);
5070 ztest_od_init(od + 1, id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, 0,
5071 chunksize);
5072
5073 if (ztest_object_init(zd, od, size, B_FALSE) != 0) {
5074 umem_free(od, size);
5075 return;
5076 }
5077
5078 bigobj = od[0].od_object;
5079 packobj = od[1].od_object;
5080 chunksize = od[0].od_gen;
5081 ASSERT3U(chunksize, ==, od[1].od_gen);
5082
5083 /*
5084 * Prefetch a random chunk of the big object.
5085 * Our aim here is to get some async reads in flight
5086 * for blocks that we may free below; the DMU should
5087 * handle this race correctly.
5088 */
5089 n = ztest_random(regions) * stride + ztest_random(width);
5090 s = 1 + ztest_random(2 * width - 1);
5091 dmu_prefetch(os, bigobj, 0, n * chunksize, s * chunksize,
5092 ZIO_PRIORITY_SYNC_READ);
5093
5094 /*
5095 * Pick a random index and compute the offsets into packobj and bigobj.
5096 */
5097 n = ztest_random(regions) * stride + ztest_random(width);
5098 s = 1 + ztest_random(width - 1);
5099
5100 packoff = n * sizeof (bufwad_t);
5101 packsize = s * sizeof (bufwad_t);
5102
5103 bigoff = n * chunksize;
5104 bigsize = s * chunksize;
5105
5106 packbuf = umem_alloc(packsize, UMEM_NOFAIL);
5107 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL);
5108
5109 /*
5110 * free_percent of the time, free a range of bigobj rather than
5111 * overwriting it.
5112 */
5113 freeit = (ztest_random(100) < free_percent);
5114
5115 /*
5116 * Read the current contents of our objects.
5117 */
5118 error = dmu_read(os, packobj, packoff, packsize, packbuf,
5119 DMU_READ_PREFETCH);
5120 ASSERT0(error);
5121 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf,
5122 DMU_READ_PREFETCH);
5123 ASSERT0(error);
5124
5125 /*
5126 * Get a tx for the mods to both packobj and bigobj.
5127 */
5128 tx = dmu_tx_create(os);
5129
5130 dmu_tx_hold_write(tx, packobj, packoff, packsize);
5131
5132 if (freeit)
5133 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize);
5134 else
5135 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
5136
5137 /* This accounts for setting the checksum/compression. */
5138 dmu_tx_hold_bonus(tx, bigobj);
5139
5140 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5141 if (txg == 0) {
5142 umem_free(packbuf, packsize);
5143 umem_free(bigbuf, bigsize);
5144 umem_free(od, size);
5145 return;
5146 }
5147
5148 enum zio_checksum cksum;
5149 do {
5150 cksum = (enum zio_checksum)
5151 ztest_random_dsl_prop(ZFS_PROP_CHECKSUM);
5152 } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS);
5153 dmu_object_set_checksum(os, bigobj, cksum, tx);
5154
5155 enum zio_compress comp;
5156 do {
5157 comp = (enum zio_compress)
5158 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION);
5159 } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS);
5160 dmu_object_set_compress(os, bigobj, comp, tx);
5161
5162 /*
5163 * For each index from n to n + s, verify that the existing bufwad
5164 * in packobj matches the bufwads at the head and tail of the
5165 * corresponding chunk in bigobj. Then update all three bufwads
5166 * with the new values we want to write out.
5167 */
5168 for (i = 0; i < s; i++) {
5169 /* LINTED */
5170 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
5171 /* LINTED */
5172 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
5173 /* LINTED */
5174 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
5175
5176 ASSERT3U((uintptr_t)bigH - (uintptr_t)bigbuf, <, bigsize);
5177 ASSERT3U((uintptr_t)bigT - (uintptr_t)bigbuf, <, bigsize);
5178
5179 if (pack->bw_txg > txg)
5180 fatal(B_FALSE,
5181 "future leak: got %"PRIx64", open txg is %"PRIx64"",
5182 pack->bw_txg, txg);
5183
5184 if (pack->bw_data != 0 && pack->bw_index != n + i)
5185 fatal(B_FALSE, "wrong index: "
5186 "got %"PRIx64", wanted %"PRIx64"+%"PRIx64"",
5187 pack->bw_index, n, i);
5188
5189 if (memcmp(pack, bigH, sizeof (bufwad_t)) != 0)
5190 fatal(B_FALSE, "pack/bigH mismatch in %p/%p",
5191 pack, bigH);
5192
5193 if (memcmp(pack, bigT, sizeof (bufwad_t)) != 0)
5194 fatal(B_FALSE, "pack/bigT mismatch in %p/%p",
5195 pack, bigT);
5196
5197 if (freeit) {
5198 memset(pack, 0, sizeof (bufwad_t));
5199 } else {
5200 pack->bw_index = n + i;
5201 pack->bw_txg = txg;
5202 pack->bw_data = 1 + ztest_random(-2ULL);
5203 }
5204 *bigH = *pack;
5205 *bigT = *pack;
5206 }
5207
5208 /*
5209 * We've verified all the old bufwads, and made new ones.
5210 * Now write them out.
5211 */
5212 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
5213
5214 if (freeit) {
5215 if (ztest_opts.zo_verbose >= 7) {
5216 (void) printf("freeing offset %"PRIx64" size %"PRIx64""
5217 " txg %"PRIx64"\n",
5218 bigoff, bigsize, txg);
5219 }
5220 VERIFY0(dmu_free_range(os, bigobj, bigoff, bigsize, tx));
5221 } else {
5222 if (ztest_opts.zo_verbose >= 7) {
5223 (void) printf("writing offset %"PRIx64" size %"PRIx64""
5224 " txg %"PRIx64"\n",
5225 bigoff, bigsize, txg);
5226 }
5227 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx);
5228 }
5229
5230 dmu_tx_commit(tx);
5231
5232 /*
5233 * Sanity check the stuff we just wrote.
5234 */
5235 {
5236 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
5237 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
5238
5239 VERIFY0(dmu_read(os, packobj, packoff,
5240 packsize, packcheck, DMU_READ_PREFETCH));
5241 VERIFY0(dmu_read(os, bigobj, bigoff,
5242 bigsize, bigcheck, DMU_READ_PREFETCH));
5243
5244 ASSERT0(memcmp(packbuf, packcheck, packsize));
5245 ASSERT0(memcmp(bigbuf, bigcheck, bigsize));
5246
5247 umem_free(packcheck, packsize);
5248 umem_free(bigcheck, bigsize);
5249 }
5250
5251 umem_free(packbuf, packsize);
5252 umem_free(bigbuf, bigsize);
5253 umem_free(od, size);
5254 }
5255
5256 static void
compare_and_update_pbbufs(uint64_t s,bufwad_t * packbuf,bufwad_t * bigbuf,uint64_t bigsize,uint64_t n,uint64_t chunksize,uint64_t txg)5257 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf,
5258 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg)
5259 {
5260 uint64_t i;
5261 bufwad_t *pack;
5262 bufwad_t *bigH;
5263 bufwad_t *bigT;
5264
5265 /*
5266 * For each index from n to n + s, verify that the existing bufwad
5267 * in packobj matches the bufwads at the head and tail of the
5268 * corresponding chunk in bigobj. Then update all three bufwads
5269 * with the new values we want to write out.
5270 */
5271 for (i = 0; i < s; i++) {
5272 /* LINTED */
5273 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
5274 /* LINTED */
5275 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
5276 /* LINTED */
5277 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
5278
5279 ASSERT3U((uintptr_t)bigH - (uintptr_t)bigbuf, <, bigsize);
5280 ASSERT3U((uintptr_t)bigT - (uintptr_t)bigbuf, <, bigsize);
5281
5282 if (pack->bw_txg > txg)
5283 fatal(B_FALSE,
5284 "future leak: got %"PRIx64", open txg is %"PRIx64"",
5285 pack->bw_txg, txg);
5286
5287 if (pack->bw_data != 0 && pack->bw_index != n + i)
5288 fatal(B_FALSE, "wrong index: "
5289 "got %"PRIx64", wanted %"PRIx64"+%"PRIx64"",
5290 pack->bw_index, n, i);
5291
5292 if (memcmp(pack, bigH, sizeof (bufwad_t)) != 0)
5293 fatal(B_FALSE, "pack/bigH mismatch in %p/%p",
5294 pack, bigH);
5295
5296 if (memcmp(pack, bigT, sizeof (bufwad_t)) != 0)
5297 fatal(B_FALSE, "pack/bigT mismatch in %p/%p",
5298 pack, bigT);
5299
5300 pack->bw_index = n + i;
5301 pack->bw_txg = txg;
5302 pack->bw_data = 1 + ztest_random(-2ULL);
5303
5304 *bigH = *pack;
5305 *bigT = *pack;
5306 }
5307 }
5308
5309 #undef OD_ARRAY_SIZE
5310 #define OD_ARRAY_SIZE 2
5311
5312 void
ztest_dmu_read_write_zcopy(ztest_ds_t * zd,uint64_t id)5313 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
5314 {
5315 objset_t *os = zd->zd_os;
5316 ztest_od_t *od;
5317 dmu_tx_t *tx;
5318 uint64_t i;
5319 int error;
5320 int size;
5321 uint64_t n, s, txg;
5322 bufwad_t *packbuf, *bigbuf;
5323 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
5324 uint64_t blocksize = ztest_random_blocksize();
5325 uint64_t chunksize = blocksize;
5326 uint64_t regions = 997;
5327 uint64_t stride = 123456789ULL;
5328 uint64_t width = 9;
5329 dmu_buf_t *bonus_db;
5330 arc_buf_t **bigbuf_arcbufs;
5331 dmu_object_info_t doi;
5332
5333 size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
5334 od = umem_alloc(size, UMEM_NOFAIL);
5335
5336 /*
5337 * This test uses two objects, packobj and bigobj, that are always
5338 * updated together (i.e. in the same tx) so that their contents are
5339 * in sync and can be compared. Their contents relate to each other
5340 * in a simple way: packobj is a dense array of 'bufwad' structures,
5341 * while bigobj is a sparse array of the same bufwads. Specifically,
5342 * for any index n, there are three bufwads that should be identical:
5343 *
5344 * packobj, at offset n * sizeof (bufwad_t)
5345 * bigobj, at the head of the nth chunk
5346 * bigobj, at the tail of the nth chunk
5347 *
5348 * The chunk size is set equal to bigobj block size so that
5349 * dmu_assign_arcbuf_by_dbuf() can be tested for object updates.
5350 */
5351
5352 /*
5353 * Read the directory info. If it's the first time, set things up.
5354 */
5355 ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0, 0);
5356 ztest_od_init(od + 1, id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, 0,
5357 chunksize);
5358
5359
5360 if (ztest_object_init(zd, od, size, B_FALSE) != 0) {
5361 umem_free(od, size);
5362 return;
5363 }
5364
5365 bigobj = od[0].od_object;
5366 packobj = od[1].od_object;
5367 blocksize = od[0].od_blocksize;
5368 chunksize = blocksize;
5369 ASSERT3U(chunksize, ==, od[1].od_gen);
5370
5371 VERIFY0(dmu_object_info(os, bigobj, &doi));
5372 VERIFY(ISP2(doi.doi_data_block_size));
5373 VERIFY3U(chunksize, ==, doi.doi_data_block_size);
5374 VERIFY3U(chunksize, >=, 2 * sizeof (bufwad_t));
5375
5376 /*
5377 * Pick a random index and compute the offsets into packobj and bigobj.
5378 */
5379 n = ztest_random(regions) * stride + ztest_random(width);
5380 s = 1 + ztest_random(width - 1);
5381
5382 packoff = n * sizeof (bufwad_t);
5383 packsize = s * sizeof (bufwad_t);
5384
5385 bigoff = n * chunksize;
5386 bigsize = s * chunksize;
5387
5388 packbuf = umem_zalloc(packsize, UMEM_NOFAIL);
5389 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL);
5390
5391 VERIFY0(dmu_bonus_hold(os, bigobj, FTAG, &bonus_db));
5392
5393 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL);
5394
5395 /*
5396 * Iteration 0 test zcopy for DB_UNCACHED dbufs.
5397 * Iteration 1 test zcopy to already referenced dbufs.
5398 * Iteration 2 test zcopy to dirty dbuf in the same txg.
5399 * Iteration 3 test zcopy to dbuf dirty in previous txg.
5400 * Iteration 4 test zcopy when dbuf is no longer dirty.
5401 * Iteration 5 test zcopy when it can't be done.
5402 * Iteration 6 one more zcopy write.
5403 */
5404 for (i = 0; i < 7; i++) {
5405 uint64_t j;
5406 uint64_t off;
5407
5408 /*
5409 * In iteration 5 (i == 5) use arcbufs
5410 * that don't match bigobj blksz to test
5411 * dmu_assign_arcbuf_by_dbuf() when it can't directly
5412 * assign an arcbuf to a dbuf.
5413 */
5414 for (j = 0; j < s; j++) {
5415 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
5416 bigbuf_arcbufs[j] =
5417 dmu_request_arcbuf(bonus_db, chunksize);
5418 } else {
5419 bigbuf_arcbufs[2 * j] =
5420 dmu_request_arcbuf(bonus_db, chunksize / 2);
5421 bigbuf_arcbufs[2 * j + 1] =
5422 dmu_request_arcbuf(bonus_db, chunksize / 2);
5423 }
5424 }
5425
5426 /*
5427 * Get a tx for the mods to both packobj and bigobj.
5428 */
5429 tx = dmu_tx_create(os);
5430
5431 dmu_tx_hold_write(tx, packobj, packoff, packsize);
5432 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
5433
5434 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5435 if (txg == 0) {
5436 umem_free(packbuf, packsize);
5437 umem_free(bigbuf, bigsize);
5438 for (j = 0; j < s; j++) {
5439 if (i != 5 ||
5440 chunksize < (SPA_MINBLOCKSIZE * 2)) {
5441 dmu_return_arcbuf(bigbuf_arcbufs[j]);
5442 } else {
5443 dmu_return_arcbuf(
5444 bigbuf_arcbufs[2 * j]);
5445 dmu_return_arcbuf(
5446 bigbuf_arcbufs[2 * j + 1]);
5447 }
5448 }
5449 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
5450 umem_free(od, size);
5451 dmu_buf_rele(bonus_db, FTAG);
5452 return;
5453 }
5454
5455 /*
5456 * 50% of the time don't read objects in the 1st iteration to
5457 * test dmu_assign_arcbuf_by_dbuf() for the case when there are
5458 * no existing dbufs for the specified offsets.
5459 */
5460 if (i != 0 || ztest_random(2) != 0) {
5461 error = dmu_read(os, packobj, packoff,
5462 packsize, packbuf, DMU_READ_PREFETCH);
5463 ASSERT0(error);
5464 error = dmu_read(os, bigobj, bigoff, bigsize,
5465 bigbuf, DMU_READ_PREFETCH);
5466 ASSERT0(error);
5467 }
5468 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize,
5469 n, chunksize, txg);
5470
5471 /*
5472 * We've verified all the old bufwads, and made new ones.
5473 * Now write them out.
5474 */
5475 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
5476 if (ztest_opts.zo_verbose >= 7) {
5477 (void) printf("writing offset %"PRIx64" size %"PRIx64""
5478 " txg %"PRIx64"\n",
5479 bigoff, bigsize, txg);
5480 }
5481 for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
5482 dmu_buf_t *dbt;
5483 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
5484 memcpy(bigbuf_arcbufs[j]->b_data,
5485 (caddr_t)bigbuf + (off - bigoff),
5486 chunksize);
5487 } else {
5488 memcpy(bigbuf_arcbufs[2 * j]->b_data,
5489 (caddr_t)bigbuf + (off - bigoff),
5490 chunksize / 2);
5491 memcpy(bigbuf_arcbufs[2 * j + 1]->b_data,
5492 (caddr_t)bigbuf + (off - bigoff) +
5493 chunksize / 2,
5494 chunksize / 2);
5495 }
5496
5497 if (i == 1) {
5498 VERIFY(dmu_buf_hold(os, bigobj, off,
5499 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
5500 }
5501 if (i != 5 || chunksize < (SPA_MINBLOCKSIZE * 2)) {
5502 VERIFY0(dmu_assign_arcbuf_by_dbuf(bonus_db,
5503 off, bigbuf_arcbufs[j], tx));
5504 } else {
5505 VERIFY0(dmu_assign_arcbuf_by_dbuf(bonus_db,
5506 off, bigbuf_arcbufs[2 * j], tx));
5507 VERIFY0(dmu_assign_arcbuf_by_dbuf(bonus_db,
5508 off + chunksize / 2,
5509 bigbuf_arcbufs[2 * j + 1], tx));
5510 }
5511 if (i == 1) {
5512 dmu_buf_rele(dbt, FTAG);
5513 }
5514 }
5515 dmu_tx_commit(tx);
5516
5517 /*
5518 * Sanity check the stuff we just wrote.
5519 */
5520 {
5521 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
5522 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
5523
5524 VERIFY0(dmu_read(os, packobj, packoff,
5525 packsize, packcheck, DMU_READ_PREFETCH));
5526 VERIFY0(dmu_read(os, bigobj, bigoff,
5527 bigsize, bigcheck, DMU_READ_PREFETCH));
5528
5529 ASSERT0(memcmp(packbuf, packcheck, packsize));
5530 ASSERT0(memcmp(bigbuf, bigcheck, bigsize));
5531
5532 umem_free(packcheck, packsize);
5533 umem_free(bigcheck, bigsize);
5534 }
5535 if (i == 2) {
5536 txg_wait_open(dmu_objset_pool(os), 0, B_TRUE);
5537 } else if (i == 3) {
5538 txg_wait_synced(dmu_objset_pool(os), 0);
5539 }
5540 }
5541
5542 dmu_buf_rele(bonus_db, FTAG);
5543 umem_free(packbuf, packsize);
5544 umem_free(bigbuf, bigsize);
5545 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
5546 umem_free(od, size);
5547 }
5548
5549 void
ztest_dmu_write_parallel(ztest_ds_t * zd,uint64_t id)5550 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
5551 {
5552 (void) id;
5553 ztest_od_t *od;
5554
5555 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5556 uint64_t offset = (1ULL << (ztest_random(20) + 43)) +
5557 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
5558
5559 /*
5560 * Have multiple threads write to large offsets in an object
5561 * to verify that parallel writes to an object -- even to the
5562 * same blocks within the object -- doesn't cause any trouble.
5563 */
5564 ztest_od_init(od, ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
5565
5566 if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0)
5567 return;
5568
5569 while (ztest_random(10) != 0)
5570 ztest_io(zd, od->od_object, offset);
5571
5572 umem_free(od, sizeof (ztest_od_t));
5573 }
5574
5575 void
ztest_dmu_prealloc(ztest_ds_t * zd,uint64_t id)5576 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
5577 {
5578 ztest_od_t *od;
5579 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) +
5580 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
5581 uint64_t count = ztest_random(20) + 1;
5582 uint64_t blocksize = ztest_random_blocksize();
5583 void *data;
5584
5585 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5586
5587 ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0, 0);
5588
5589 if (ztest_object_init(zd, od, sizeof (ztest_od_t),
5590 !ztest_random(2)) != 0) {
5591 umem_free(od, sizeof (ztest_od_t));
5592 return;
5593 }
5594
5595 if (ztest_truncate(zd, od->od_object, offset, count * blocksize) != 0) {
5596 umem_free(od, sizeof (ztest_od_t));
5597 return;
5598 }
5599
5600 ztest_prealloc(zd, od->od_object, offset, count * blocksize);
5601
5602 data = umem_zalloc(blocksize, UMEM_NOFAIL);
5603
5604 while (ztest_random(count) != 0) {
5605 uint64_t randoff = offset + (ztest_random(count) * blocksize);
5606 if (ztest_write(zd, od->od_object, randoff, blocksize,
5607 data) != 0)
5608 break;
5609 while (ztest_random(4) != 0)
5610 ztest_io(zd, od->od_object, randoff);
5611 }
5612
5613 umem_free(data, blocksize);
5614 umem_free(od, sizeof (ztest_od_t));
5615 }
5616
5617 /*
5618 * Verify that zap_{create,destroy,add,remove,update} work as expected.
5619 */
5620 #define ZTEST_ZAP_MIN_INTS 1
5621 #define ZTEST_ZAP_MAX_INTS 4
5622 #define ZTEST_ZAP_MAX_PROPS 1000
5623
5624 void
ztest_zap(ztest_ds_t * zd,uint64_t id)5625 ztest_zap(ztest_ds_t *zd, uint64_t id)
5626 {
5627 objset_t *os = zd->zd_os;
5628 ztest_od_t *od;
5629 uint64_t object;
5630 uint64_t txg, last_txg;
5631 uint64_t value[ZTEST_ZAP_MAX_INTS];
5632 uint64_t zl_ints, zl_intsize, prop;
5633 int i, ints;
5634 dmu_tx_t *tx;
5635 char propname[100], txgname[100];
5636 int error;
5637 const char *const hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
5638
5639 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5640 ztest_od_init(od, id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
5641
5642 if (ztest_object_init(zd, od, sizeof (ztest_od_t),
5643 !ztest_random(2)) != 0)
5644 goto out;
5645
5646 object = od->od_object;
5647
5648 /*
5649 * Generate a known hash collision, and verify that
5650 * we can lookup and remove both entries.
5651 */
5652 tx = dmu_tx_create(os);
5653 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
5654 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5655 if (txg == 0)
5656 goto out;
5657 for (i = 0; i < 2; i++) {
5658 value[i] = i;
5659 VERIFY0(zap_add(os, object, hc[i], sizeof (uint64_t),
5660 1, &value[i], tx));
5661 }
5662 for (i = 0; i < 2; i++) {
5663 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i],
5664 sizeof (uint64_t), 1, &value[i], tx));
5665 VERIFY0(
5666 zap_length(os, object, hc[i], &zl_intsize, &zl_ints));
5667 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
5668 ASSERT3U(zl_ints, ==, 1);
5669 }
5670 for (i = 0; i < 2; i++) {
5671 VERIFY0(zap_remove(os, object, hc[i], tx));
5672 }
5673 dmu_tx_commit(tx);
5674
5675 /*
5676 * Generate a bunch of random entries.
5677 */
5678 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS);
5679
5680 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
5681 (void) sprintf(propname, "prop_%"PRIu64"", prop);
5682 (void) sprintf(txgname, "txg_%"PRIu64"", prop);
5683 memset(value, 0, sizeof (value));
5684 last_txg = 0;
5685
5686 /*
5687 * If these zap entries already exist, validate their contents.
5688 */
5689 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
5690 if (error == 0) {
5691 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
5692 ASSERT3U(zl_ints, ==, 1);
5693
5694 VERIFY0(zap_lookup(os, object, txgname, zl_intsize,
5695 zl_ints, &last_txg));
5696
5697 VERIFY0(zap_length(os, object, propname, &zl_intsize,
5698 &zl_ints));
5699
5700 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
5701 ASSERT3U(zl_ints, ==, ints);
5702
5703 VERIFY0(zap_lookup(os, object, propname, zl_intsize,
5704 zl_ints, value));
5705
5706 for (i = 0; i < ints; i++) {
5707 ASSERT3U(value[i], ==, last_txg + object + i);
5708 }
5709 } else {
5710 ASSERT3U(error, ==, ENOENT);
5711 }
5712
5713 /*
5714 * Atomically update two entries in our zap object.
5715 * The first is named txg_%llu, and contains the txg
5716 * in which the property was last updated. The second
5717 * is named prop_%llu, and the nth element of its value
5718 * should be txg + object + n.
5719 */
5720 tx = dmu_tx_create(os);
5721 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
5722 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5723 if (txg == 0)
5724 goto out;
5725
5726 if (last_txg > txg)
5727 fatal(B_FALSE, "zap future leak: old %"PRIu64" new %"PRIu64"",
5728 last_txg, txg);
5729
5730 for (i = 0; i < ints; i++)
5731 value[i] = txg + object + i;
5732
5733 VERIFY0(zap_update(os, object, txgname, sizeof (uint64_t),
5734 1, &txg, tx));
5735 VERIFY0(zap_update(os, object, propname, sizeof (uint64_t),
5736 ints, value, tx));
5737
5738 dmu_tx_commit(tx);
5739
5740 /*
5741 * Remove a random pair of entries.
5742 */
5743 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
5744 (void) sprintf(propname, "prop_%"PRIu64"", prop);
5745 (void) sprintf(txgname, "txg_%"PRIu64"", prop);
5746
5747 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
5748
5749 if (error == ENOENT)
5750 goto out;
5751
5752 ASSERT0(error);
5753
5754 tx = dmu_tx_create(os);
5755 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
5756 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5757 if (txg == 0)
5758 goto out;
5759 VERIFY0(zap_remove(os, object, txgname, tx));
5760 VERIFY0(zap_remove(os, object, propname, tx));
5761 dmu_tx_commit(tx);
5762 out:
5763 umem_free(od, sizeof (ztest_od_t));
5764 }
5765
5766 /*
5767 * Test case to test the upgrading of a microzap to fatzap.
5768 */
5769 void
ztest_fzap(ztest_ds_t * zd,uint64_t id)5770 ztest_fzap(ztest_ds_t *zd, uint64_t id)
5771 {
5772 objset_t *os = zd->zd_os;
5773 ztest_od_t *od;
5774 uint64_t object, txg, value;
5775
5776 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5777 ztest_od_init(od, id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0, 0);
5778
5779 if (ztest_object_init(zd, od, sizeof (ztest_od_t),
5780 !ztest_random(2)) != 0)
5781 goto out;
5782 object = od->od_object;
5783
5784 /*
5785 * Add entries to this ZAP and make sure it spills over
5786 * and gets upgraded to a fatzap. Also, since we are adding
5787 * 2050 entries we should see ptrtbl growth and leaf-block split.
5788 */
5789 for (value = 0; value < 2050; value++) {
5790 char name[ZFS_MAX_DATASET_NAME_LEN];
5791 dmu_tx_t *tx;
5792 int error;
5793
5794 (void) snprintf(name, sizeof (name), "fzap-%"PRIu64"-%"PRIu64"",
5795 id, value);
5796
5797 tx = dmu_tx_create(os);
5798 dmu_tx_hold_zap(tx, object, B_TRUE, name);
5799 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5800 if (txg == 0)
5801 goto out;
5802 error = zap_add(os, object, name, sizeof (uint64_t), 1,
5803 &value, tx);
5804 ASSERT(error == 0 || error == EEXIST);
5805 dmu_tx_commit(tx);
5806 }
5807 out:
5808 umem_free(od, sizeof (ztest_od_t));
5809 }
5810
5811 void
ztest_zap_parallel(ztest_ds_t * zd,uint64_t id)5812 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
5813 {
5814 (void) id;
5815 objset_t *os = zd->zd_os;
5816 ztest_od_t *od;
5817 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
5818 dmu_tx_t *tx;
5819 int i, namelen, error;
5820 int micro = ztest_random(2);
5821 char name[20], string_value[20];
5822 void *data;
5823
5824 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
5825 ztest_od_init(od, ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0, 0);
5826
5827 if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0) {
5828 umem_free(od, sizeof (ztest_od_t));
5829 return;
5830 }
5831
5832 object = od->od_object;
5833
5834 /*
5835 * Generate a random name of the form 'xxx.....' where each
5836 * x is a random printable character and the dots are dots.
5837 * There are 94 such characters, and the name length goes from
5838 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names.
5839 */
5840 namelen = ztest_random(sizeof (name) - 5) + 5 + 1;
5841
5842 for (i = 0; i < 3; i++)
5843 name[i] = '!' + ztest_random('~' - '!' + 1);
5844 for (; i < namelen - 1; i++)
5845 name[i] = '.';
5846 name[i] = '\0';
5847
5848 if ((namelen & 1) || micro) {
5849 wsize = sizeof (txg);
5850 wc = 1;
5851 data = &txg;
5852 } else {
5853 wsize = 1;
5854 wc = namelen;
5855 data = string_value;
5856 }
5857
5858 count = -1ULL;
5859 VERIFY0(zap_count(os, object, &count));
5860 ASSERT3S(count, !=, -1ULL);
5861
5862 /*
5863 * Select an operation: length, lookup, add, update, remove.
5864 */
5865 i = ztest_random(5);
5866
5867 if (i >= 2) {
5868 tx = dmu_tx_create(os);
5869 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
5870 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
5871 if (txg == 0) {
5872 umem_free(od, sizeof (ztest_od_t));
5873 return;
5874 }
5875 memcpy(string_value, name, namelen);
5876 } else {
5877 tx = NULL;
5878 txg = 0;
5879 memset(string_value, 0, namelen);
5880 }
5881
5882 switch (i) {
5883
5884 case 0:
5885 error = zap_length(os, object, name, &zl_wsize, &zl_wc);
5886 if (error == 0) {
5887 ASSERT3U(wsize, ==, zl_wsize);
5888 ASSERT3U(wc, ==, zl_wc);
5889 } else {
5890 ASSERT3U(error, ==, ENOENT);
5891 }
5892 break;
5893
5894 case 1:
5895 error = zap_lookup(os, object, name, wsize, wc, data);
5896 if (error == 0) {
5897 if (data == string_value &&
5898 memcmp(name, data, namelen) != 0)
5899 fatal(B_FALSE, "name '%s' != val '%s' len %d",
5900 name, (char *)data, namelen);
5901 } else {
5902 ASSERT3U(error, ==, ENOENT);
5903 }
5904 break;
5905
5906 case 2:
5907 error = zap_add(os, object, name, wsize, wc, data, tx);
5908 ASSERT(error == 0 || error == EEXIST);
5909 break;
5910
5911 case 3:
5912 VERIFY0(zap_update(os, object, name, wsize, wc, data, tx));
5913 break;
5914
5915 case 4:
5916 error = zap_remove(os, object, name, tx);
5917 ASSERT(error == 0 || error == ENOENT);
5918 break;
5919 }
5920
5921 if (tx != NULL)
5922 dmu_tx_commit(tx);
5923
5924 umem_free(od, sizeof (ztest_od_t));
5925 }
5926
5927 /*
5928 * Commit callback data.
5929 */
5930 typedef struct ztest_cb_data {
5931 list_node_t zcd_node;
5932 uint64_t zcd_txg;
5933 int zcd_expected_err;
5934 boolean_t zcd_added;
5935 boolean_t zcd_called;
5936 spa_t *zcd_spa;
5937 } ztest_cb_data_t;
5938
5939 /* This is the actual commit callback function */
5940 static void
ztest_commit_callback(void * arg,int error)5941 ztest_commit_callback(void *arg, int error)
5942 {
5943 ztest_cb_data_t *data = arg;
5944 uint64_t synced_txg;
5945
5946 VERIFY3P(data, !=, NULL);
5947 VERIFY3S(data->zcd_expected_err, ==, error);
5948 VERIFY(!data->zcd_called);
5949
5950 synced_txg = spa_last_synced_txg(data->zcd_spa);
5951 if (data->zcd_txg > synced_txg)
5952 fatal(B_FALSE,
5953 "commit callback of txg %"PRIu64" called prematurely, "
5954 "last synced txg = %"PRIu64"\n",
5955 data->zcd_txg, synced_txg);
5956
5957 data->zcd_called = B_TRUE;
5958
5959 if (error == ECANCELED) {
5960 ASSERT0(data->zcd_txg);
5961 ASSERT(!data->zcd_added);
5962
5963 /*
5964 * The private callback data should be destroyed here, but
5965 * since we are going to check the zcd_called field after
5966 * dmu_tx_abort(), we will destroy it there.
5967 */
5968 return;
5969 }
5970
5971 ASSERT(data->zcd_added);
5972 ASSERT3U(data->zcd_txg, !=, 0);
5973
5974 (void) mutex_enter(&zcl.zcl_callbacks_lock);
5975
5976 /* See if this cb was called more quickly */
5977 if ((synced_txg - data->zcd_txg) < zc_min_txg_delay)
5978 zc_min_txg_delay = synced_txg - data->zcd_txg;
5979
5980 /* Remove our callback from the list */
5981 list_remove(&zcl.zcl_callbacks, data);
5982
5983 (void) mutex_exit(&zcl.zcl_callbacks_lock);
5984
5985 umem_free(data, sizeof (ztest_cb_data_t));
5986 }
5987
5988 /* Allocate and initialize callback data structure */
5989 static ztest_cb_data_t *
ztest_create_cb_data(objset_t * os,uint64_t txg)5990 ztest_create_cb_data(objset_t *os, uint64_t txg)
5991 {
5992 ztest_cb_data_t *cb_data;
5993
5994 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL);
5995
5996 cb_data->zcd_txg = txg;
5997 cb_data->zcd_spa = dmu_objset_spa(os);
5998 list_link_init(&cb_data->zcd_node);
5999
6000 return (cb_data);
6001 }
6002
6003 /*
6004 * Commit callback test.
6005 */
6006 void
ztest_dmu_commit_callbacks(ztest_ds_t * zd,uint64_t id)6007 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
6008 {
6009 objset_t *os = zd->zd_os;
6010 ztest_od_t *od;
6011 dmu_tx_t *tx;
6012 ztest_cb_data_t *cb_data[3], *tmp_cb;
6013 uint64_t old_txg, txg;
6014 int i, error = 0;
6015
6016 od = umem_alloc(sizeof (ztest_od_t), UMEM_NOFAIL);
6017 ztest_od_init(od, id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
6018
6019 if (ztest_object_init(zd, od, sizeof (ztest_od_t), B_FALSE) != 0) {
6020 umem_free(od, sizeof (ztest_od_t));
6021 return;
6022 }
6023
6024 tx = dmu_tx_create(os);
6025
6026 cb_data[0] = ztest_create_cb_data(os, 0);
6027 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]);
6028
6029 dmu_tx_hold_write(tx, od->od_object, 0, sizeof (uint64_t));
6030
6031 /* Every once in a while, abort the transaction on purpose */
6032 if (ztest_random(100) == 0)
6033 error = -1;
6034
6035 if (!error)
6036 error = dmu_tx_assign(tx, TXG_NOWAIT);
6037
6038 txg = error ? 0 : dmu_tx_get_txg(tx);
6039
6040 cb_data[0]->zcd_txg = txg;
6041 cb_data[1] = ztest_create_cb_data(os, txg);
6042 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]);
6043
6044 if (error) {
6045 /*
6046 * It's not a strict requirement to call the registered
6047 * callbacks from inside dmu_tx_abort(), but that's what
6048 * it's supposed to happen in the current implementation
6049 * so we will check for that.
6050 */
6051 for (i = 0; i < 2; i++) {
6052 cb_data[i]->zcd_expected_err = ECANCELED;
6053 VERIFY(!cb_data[i]->zcd_called);
6054 }
6055
6056 dmu_tx_abort(tx);
6057
6058 for (i = 0; i < 2; i++) {
6059 VERIFY(cb_data[i]->zcd_called);
6060 umem_free(cb_data[i], sizeof (ztest_cb_data_t));
6061 }
6062
6063 umem_free(od, sizeof (ztest_od_t));
6064 return;
6065 }
6066
6067 cb_data[2] = ztest_create_cb_data(os, txg);
6068 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]);
6069
6070 /*
6071 * Read existing data to make sure there isn't a future leak.
6072 */
6073 VERIFY0(dmu_read(os, od->od_object, 0, sizeof (uint64_t),
6074 &old_txg, DMU_READ_PREFETCH));
6075
6076 if (old_txg > txg)
6077 fatal(B_FALSE,
6078 "future leak: got %"PRIu64", open txg is %"PRIu64"",
6079 old_txg, txg);
6080
6081 dmu_write(os, od->od_object, 0, sizeof (uint64_t), &txg, tx);
6082
6083 (void) mutex_enter(&zcl.zcl_callbacks_lock);
6084
6085 /*
6086 * Since commit callbacks don't have any ordering requirement and since
6087 * it is theoretically possible for a commit callback to be called
6088 * after an arbitrary amount of time has elapsed since its txg has been
6089 * synced, it is difficult to reliably determine whether a commit
6090 * callback hasn't been called due to high load or due to a flawed
6091 * implementation.
6092 *
6093 * In practice, we will assume that if after a certain number of txgs a
6094 * commit callback hasn't been called, then most likely there's an
6095 * implementation bug..
6096 */
6097 tmp_cb = list_head(&zcl.zcl_callbacks);
6098 if (tmp_cb != NULL &&
6099 tmp_cb->zcd_txg + ZTEST_COMMIT_CB_THRESH < txg) {
6100 fatal(B_FALSE,
6101 "Commit callback threshold exceeded, "
6102 "oldest txg: %"PRIu64", open txg: %"PRIu64"\n",
6103 tmp_cb->zcd_txg, txg);
6104 }
6105
6106 /*
6107 * Let's find the place to insert our callbacks.
6108 *
6109 * Even though the list is ordered by txg, it is possible for the
6110 * insertion point to not be the end because our txg may already be
6111 * quiescing at this point and other callbacks in the open txg
6112 * (from other objsets) may have sneaked in.
6113 */
6114 tmp_cb = list_tail(&zcl.zcl_callbacks);
6115 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg)
6116 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb);
6117
6118 /* Add the 3 callbacks to the list */
6119 for (i = 0; i < 3; i++) {
6120 if (tmp_cb == NULL)
6121 list_insert_head(&zcl.zcl_callbacks, cb_data[i]);
6122 else
6123 list_insert_after(&zcl.zcl_callbacks, tmp_cb,
6124 cb_data[i]);
6125
6126 cb_data[i]->zcd_added = B_TRUE;
6127 VERIFY(!cb_data[i]->zcd_called);
6128
6129 tmp_cb = cb_data[i];
6130 }
6131
6132 zc_cb_counter += 3;
6133
6134 (void) mutex_exit(&zcl.zcl_callbacks_lock);
6135
6136 dmu_tx_commit(tx);
6137
6138 umem_free(od, sizeof (ztest_od_t));
6139 }
6140
6141 /*
6142 * Visit each object in the dataset. Verify that its properties
6143 * are consistent what was stored in the block tag when it was created,
6144 * and that its unused bonus buffer space has not been overwritten.
6145 */
6146 void
ztest_verify_dnode_bt(ztest_ds_t * zd,uint64_t id)6147 ztest_verify_dnode_bt(ztest_ds_t *zd, uint64_t id)
6148 {
6149 (void) id;
6150 objset_t *os = zd->zd_os;
6151 uint64_t obj;
6152 int err = 0;
6153
6154 for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) {
6155 ztest_block_tag_t *bt = NULL;
6156 dmu_object_info_t doi;
6157 dmu_buf_t *db;
6158
6159 ztest_object_lock(zd, obj, ZTRL_READER);
6160 if (dmu_bonus_hold(os, obj, FTAG, &db) != 0) {
6161 ztest_object_unlock(zd, obj);
6162 continue;
6163 }
6164
6165 dmu_object_info_from_db(db, &doi);
6166 if (doi.doi_bonus_size >= sizeof (*bt))
6167 bt = ztest_bt_bonus(db);
6168
6169 if (bt && bt->bt_magic == BT_MAGIC) {
6170 ztest_bt_verify(bt, os, obj, doi.doi_dnodesize,
6171 bt->bt_offset, bt->bt_gen, bt->bt_txg,
6172 bt->bt_crtxg);
6173 ztest_verify_unused_bonus(db, bt, obj, os, bt->bt_gen);
6174 }
6175
6176 dmu_buf_rele(db, FTAG);
6177 ztest_object_unlock(zd, obj);
6178 }
6179 }
6180
6181 void
ztest_dsl_prop_get_set(ztest_ds_t * zd,uint64_t id)6182 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
6183 {
6184 (void) id;
6185 zfs_prop_t proplist[] = {
6186 ZFS_PROP_CHECKSUM,
6187 ZFS_PROP_COMPRESSION,
6188 ZFS_PROP_COPIES,
6189 ZFS_PROP_DEDUP
6190 };
6191
6192 (void) pthread_rwlock_rdlock(&ztest_name_lock);
6193
6194 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) {
6195 int error = ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
6196 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
6197 ASSERT(error == 0 || error == ENOSPC);
6198 }
6199
6200 int error = ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_RECORDSIZE,
6201 ztest_random_blocksize(), (int)ztest_random(2));
6202 ASSERT(error == 0 || error == ENOSPC);
6203
6204 (void) pthread_rwlock_unlock(&ztest_name_lock);
6205 }
6206
6207 void
ztest_spa_prop_get_set(ztest_ds_t * zd,uint64_t id)6208 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
6209 {
6210 (void) zd, (void) id;
6211 nvlist_t *props = NULL;
6212
6213 (void) pthread_rwlock_rdlock(&ztest_name_lock);
6214
6215 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_AUTOTRIM, ztest_random(2));
6216
6217 VERIFY0(spa_prop_get(ztest_spa, &props));
6218
6219 if (ztest_opts.zo_verbose >= 6)
6220 dump_nvlist(props, 4);
6221
6222 fnvlist_free(props);
6223
6224 (void) pthread_rwlock_unlock(&ztest_name_lock);
6225 }
6226
6227 static int
user_release_one(const char * snapname,const char * holdname)6228 user_release_one(const char *snapname, const char *holdname)
6229 {
6230 nvlist_t *snaps, *holds;
6231 int error;
6232
6233 snaps = fnvlist_alloc();
6234 holds = fnvlist_alloc();
6235 fnvlist_add_boolean(holds, holdname);
6236 fnvlist_add_nvlist(snaps, snapname, holds);
6237 fnvlist_free(holds);
6238 error = dsl_dataset_user_release(snaps, NULL);
6239 fnvlist_free(snaps);
6240 return (error);
6241 }
6242
6243 /*
6244 * Test snapshot hold/release and deferred destroy.
6245 */
6246 void
ztest_dmu_snapshot_hold(ztest_ds_t * zd,uint64_t id)6247 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
6248 {
6249 int error;
6250 objset_t *os = zd->zd_os;
6251 objset_t *origin;
6252 char snapname[100];
6253 char fullname[100];
6254 char clonename[100];
6255 char tag[100];
6256 char osname[ZFS_MAX_DATASET_NAME_LEN];
6257 nvlist_t *holds;
6258
6259 (void) pthread_rwlock_rdlock(&ztest_name_lock);
6260
6261 dmu_objset_name(os, osname);
6262
6263 (void) snprintf(snapname, sizeof (snapname), "sh1_%"PRIu64"", id);
6264 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname);
6265 (void) snprintf(clonename, sizeof (clonename), "%s/ch1_%"PRIu64"",
6266 osname, id);
6267 (void) snprintf(tag, sizeof (tag), "tag_%"PRIu64"", id);
6268
6269 /*
6270 * Clean up from any previous run.
6271 */
6272 error = dsl_destroy_head(clonename);
6273 if (error != ENOENT)
6274 ASSERT0(error);
6275 error = user_release_one(fullname, tag);
6276 if (error != ESRCH && error != ENOENT)
6277 ASSERT0(error);
6278 error = dsl_destroy_snapshot(fullname, B_FALSE);
6279 if (error != ENOENT)
6280 ASSERT0(error);
6281
6282 /*
6283 * Create snapshot, clone it, mark snap for deferred destroy,
6284 * destroy clone, verify snap was also destroyed.
6285 */
6286 error = dmu_objset_snapshot_one(osname, snapname);
6287 if (error) {
6288 if (error == ENOSPC) {
6289 ztest_record_enospc("dmu_objset_snapshot");
6290 goto out;
6291 }
6292 fatal(B_FALSE, "dmu_objset_snapshot(%s) = %d", fullname, error);
6293 }
6294
6295 error = dmu_objset_clone(clonename, fullname);
6296 if (error) {
6297 if (error == ENOSPC) {
6298 ztest_record_enospc("dmu_objset_clone");
6299 goto out;
6300 }
6301 fatal(B_FALSE, "dmu_objset_clone(%s) = %d", clonename, error);
6302 }
6303
6304 error = dsl_destroy_snapshot(fullname, B_TRUE);
6305 if (error) {
6306 fatal(B_FALSE, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
6307 fullname, error);
6308 }
6309
6310 error = dsl_destroy_head(clonename);
6311 if (error)
6312 fatal(B_FALSE, "dsl_destroy_head(%s) = %d", clonename, error);
6313
6314 error = dmu_objset_hold(fullname, FTAG, &origin);
6315 if (error != ENOENT)
6316 fatal(B_FALSE, "dmu_objset_hold(%s) = %d", fullname, error);
6317
6318 /*
6319 * Create snapshot, add temporary hold, verify that we can't
6320 * destroy a held snapshot, mark for deferred destroy,
6321 * release hold, verify snapshot was destroyed.
6322 */
6323 error = dmu_objset_snapshot_one(osname, snapname);
6324 if (error) {
6325 if (error == ENOSPC) {
6326 ztest_record_enospc("dmu_objset_snapshot");
6327 goto out;
6328 }
6329 fatal(B_FALSE, "dmu_objset_snapshot(%s) = %d", fullname, error);
6330 }
6331
6332 holds = fnvlist_alloc();
6333 fnvlist_add_string(holds, fullname, tag);
6334 error = dsl_dataset_user_hold(holds, 0, NULL);
6335 fnvlist_free(holds);
6336
6337 if (error == ENOSPC) {
6338 ztest_record_enospc("dsl_dataset_user_hold");
6339 goto out;
6340 } else if (error) {
6341 fatal(B_FALSE, "dsl_dataset_user_hold(%s, %s) = %u",
6342 fullname, tag, error);
6343 }
6344
6345 error = dsl_destroy_snapshot(fullname, B_FALSE);
6346 if (error != EBUSY) {
6347 fatal(B_FALSE, "dsl_destroy_snapshot(%s, B_FALSE) = %d",
6348 fullname, error);
6349 }
6350
6351 error = dsl_destroy_snapshot(fullname, B_TRUE);
6352 if (error) {
6353 fatal(B_FALSE, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
6354 fullname, error);
6355 }
6356
6357 error = user_release_one(fullname, tag);
6358 if (error)
6359 fatal(B_FALSE, "user_release_one(%s, %s) = %d",
6360 fullname, tag, error);
6361
6362 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT);
6363
6364 out:
6365 (void) pthread_rwlock_unlock(&ztest_name_lock);
6366 }
6367
6368 /*
6369 * Inject random faults into the on-disk data.
6370 */
6371 void
ztest_fault_inject(ztest_ds_t * zd,uint64_t id)6372 ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
6373 {
6374 (void) zd, (void) id;
6375 ztest_shared_t *zs = ztest_shared;
6376 spa_t *spa = ztest_spa;
6377 int fd;
6378 uint64_t offset;
6379 uint64_t leaves;
6380 uint64_t bad = 0x1990c0ffeedecadeull;
6381 uint64_t top, leaf;
6382 uint64_t raidz_children;
6383 char *path0;
6384 char *pathrand;
6385 size_t fsize;
6386 int bshift = SPA_MAXBLOCKSHIFT + 2;
6387 int iters = 1000;
6388 int maxfaults;
6389 int mirror_save;
6390 vdev_t *vd0 = NULL;
6391 uint64_t guid0 = 0;
6392 boolean_t islog = B_FALSE;
6393 boolean_t injected = B_FALSE;
6394
6395 path0 = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
6396 pathrand = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
6397
6398 mutex_enter(&ztest_vdev_lock);
6399
6400 /*
6401 * Device removal is in progress, fault injection must be disabled
6402 * until it completes and the pool is scrubbed. The fault injection
6403 * strategy for damaging blocks does not take in to account evacuated
6404 * blocks which may have already been damaged.
6405 */
6406 if (ztest_device_removal_active)
6407 goto out;
6408
6409 /*
6410 * The fault injection strategy for damaging blocks cannot be used
6411 * if raidz expansion is in progress. The leaves value
6412 * (attached raidz children) is variable and strategy for damaging
6413 * blocks will corrupt same data blocks on different child vdevs
6414 * because of the reflow process.
6415 */
6416 if (spa->spa_raidz_expand != NULL)
6417 goto out;
6418
6419 maxfaults = MAXFAULTS(zs);
6420 raidz_children = ztest_get_raidz_children(spa);
6421 leaves = MAX(zs->zs_mirrors, 1) * raidz_children;
6422 mirror_save = zs->zs_mirrors;
6423
6424 ASSERT3U(leaves, >=, 1);
6425
6426 /*
6427 * While ztest is running the number of leaves will not change. This
6428 * is critical for the fault injection logic as it determines where
6429 * errors can be safely injected such that they are always repairable.
6430 *
6431 * When restarting ztest a different number of leaves may be requested
6432 * which will shift the regions to be damaged. This is fine as long
6433 * as the pool has been scrubbed prior to using the new mapping.
6434 * Failure to do can result in non-repairable damage being injected.
6435 */
6436 if (ztest_pool_scrubbed == B_FALSE)
6437 goto out;
6438
6439 /*
6440 * Grab the name lock as reader. There are some operations
6441 * which don't like to have their vdevs changed while
6442 * they are in progress (i.e. spa_change_guid). Those
6443 * operations will have grabbed the name lock as writer.
6444 */
6445 (void) pthread_rwlock_rdlock(&ztest_name_lock);
6446
6447 /*
6448 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd.
6449 */
6450 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
6451
6452 if (ztest_random(2) == 0) {
6453 /*
6454 * Inject errors on a normal data device or slog device.
6455 */
6456 top = ztest_random_vdev_top(spa, B_TRUE);
6457 leaf = ztest_random(leaves) + zs->zs_splits;
6458
6459 /*
6460 * Generate paths to the first leaf in this top-level vdev,
6461 * and to the random leaf we selected. We'll induce transient
6462 * write failures and random online/offline activity on leaf 0,
6463 * and we'll write random garbage to the randomly chosen leaf.
6464 */
6465 (void) snprintf(path0, MAXPATHLEN, ztest_dev_template,
6466 ztest_opts.zo_dir, ztest_opts.zo_pool,
6467 top * leaves + zs->zs_splits);
6468 (void) snprintf(pathrand, MAXPATHLEN, ztest_dev_template,
6469 ztest_opts.zo_dir, ztest_opts.zo_pool,
6470 top * leaves + leaf);
6471
6472 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0);
6473 if (vd0 != NULL && vd0->vdev_top->vdev_islog)
6474 islog = B_TRUE;
6475
6476 /*
6477 * If the top-level vdev needs to be resilvered
6478 * then we only allow faults on the device that is
6479 * resilvering.
6480 */
6481 if (vd0 != NULL && maxfaults != 1 &&
6482 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) ||
6483 vd0->vdev_resilver_txg != 0)) {
6484 /*
6485 * Make vd0 explicitly claim to be unreadable,
6486 * or unwritable, or reach behind its back
6487 * and close the underlying fd. We can do this if
6488 * maxfaults == 0 because we'll fail and reexecute,
6489 * and we can do it if maxfaults >= 2 because we'll
6490 * have enough redundancy. If maxfaults == 1, the
6491 * combination of this with injection of random data
6492 * corruption below exceeds the pool's fault tolerance.
6493 */
6494 vdev_file_t *vf = vd0->vdev_tsd;
6495
6496 zfs_dbgmsg("injecting fault to vdev %llu; maxfaults=%d",
6497 (long long)vd0->vdev_id, (int)maxfaults);
6498
6499 if (vf != NULL && ztest_random(3) == 0) {
6500 (void) close(vf->vf_file->f_fd);
6501 vf->vf_file->f_fd = -1;
6502 } else if (ztest_random(2) == 0) {
6503 vd0->vdev_cant_read = B_TRUE;
6504 } else {
6505 vd0->vdev_cant_write = B_TRUE;
6506 }
6507 guid0 = vd0->vdev_guid;
6508 }
6509 } else {
6510 /*
6511 * Inject errors on an l2cache device.
6512 */
6513 spa_aux_vdev_t *sav = &spa->spa_l2cache;
6514
6515 if (sav->sav_count == 0) {
6516 spa_config_exit(spa, SCL_STATE, FTAG);
6517 (void) pthread_rwlock_unlock(&ztest_name_lock);
6518 goto out;
6519 }
6520 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)];
6521 guid0 = vd0->vdev_guid;
6522 (void) strlcpy(path0, vd0->vdev_path, MAXPATHLEN);
6523 (void) strlcpy(pathrand, vd0->vdev_path, MAXPATHLEN);
6524
6525 leaf = 0;
6526 leaves = 1;
6527 maxfaults = INT_MAX; /* no limit on cache devices */
6528 }
6529
6530 spa_config_exit(spa, SCL_STATE, FTAG);
6531 (void) pthread_rwlock_unlock(&ztest_name_lock);
6532
6533 /*
6534 * If we can tolerate two or more faults, or we're dealing
6535 * with a slog, randomly online/offline vd0.
6536 */
6537 if ((maxfaults >= 2 || islog) && guid0 != 0) {
6538 if (ztest_random(10) < 6) {
6539 int flags = (ztest_random(2) == 0 ?
6540 ZFS_OFFLINE_TEMPORARY : 0);
6541
6542 /*
6543 * We have to grab the zs_name_lock as writer to
6544 * prevent a race between offlining a slog and
6545 * destroying a dataset. Offlining the slog will
6546 * grab a reference on the dataset which may cause
6547 * dsl_destroy_head() to fail with EBUSY thus
6548 * leaving the dataset in an inconsistent state.
6549 */
6550 if (islog)
6551 (void) pthread_rwlock_wrlock(&ztest_name_lock);
6552
6553 VERIFY3U(vdev_offline(spa, guid0, flags), !=, EBUSY);
6554
6555 if (islog)
6556 (void) pthread_rwlock_unlock(&ztest_name_lock);
6557 } else {
6558 /*
6559 * Ideally we would like to be able to randomly
6560 * call vdev_[on|off]line without holding locks
6561 * to force unpredictable failures but the side
6562 * effects of vdev_[on|off]line prevent us from
6563 * doing so.
6564 */
6565 (void) vdev_online(spa, guid0, 0, NULL);
6566 }
6567 }
6568
6569 if (maxfaults == 0)
6570 goto out;
6571
6572 /*
6573 * We have at least single-fault tolerance, so inject data corruption.
6574 */
6575 fd = open(pathrand, O_RDWR);
6576
6577 if (fd == -1) /* we hit a gap in the device namespace */
6578 goto out;
6579
6580 fsize = lseek(fd, 0, SEEK_END);
6581
6582 while (--iters != 0) {
6583 /*
6584 * The offset must be chosen carefully to ensure that
6585 * we do not inject a given logical block with errors
6586 * on two different leaf devices, because ZFS can not
6587 * tolerate that (if maxfaults==1).
6588 *
6589 * To achieve this we divide each leaf device into
6590 * chunks of size (# leaves * SPA_MAXBLOCKSIZE * 4).
6591 * Each chunk is further divided into error-injection
6592 * ranges (can accept errors) and clear ranges (we do
6593 * not inject errors in those). Each error-injection
6594 * range can accept errors only for a single leaf vdev.
6595 * Error-injection ranges are separated by clear ranges.
6596 *
6597 * For example, with 3 leaves, each chunk looks like:
6598 * 0 to 32M: injection range for leaf 0
6599 * 32M to 64M: clear range - no injection allowed
6600 * 64M to 96M: injection range for leaf 1
6601 * 96M to 128M: clear range - no injection allowed
6602 * 128M to 160M: injection range for leaf 2
6603 * 160M to 192M: clear range - no injection allowed
6604 *
6605 * Each clear range must be large enough such that a
6606 * single block cannot straddle it. This way a block
6607 * can't be a target in two different injection ranges
6608 * (on different leaf vdevs).
6609 */
6610 offset = ztest_random(fsize / (leaves << bshift)) *
6611 (leaves << bshift) + (leaf << bshift) +
6612 (ztest_random(1ULL << (bshift - 1)) & -8ULL);
6613
6614 /*
6615 * Only allow damage to the labels at one end of the vdev.
6616 *
6617 * If all labels are damaged, the device will be totally
6618 * inaccessible, which will result in loss of data,
6619 * because we also damage (parts of) the other side of
6620 * the mirror/raidz.
6621 *
6622 * Additionally, we will always have both an even and an
6623 * odd label, so that we can handle crashes in the
6624 * middle of vdev_config_sync().
6625 */
6626 if ((leaf & 1) == 0 && offset < VDEV_LABEL_START_SIZE)
6627 continue;
6628
6629 /*
6630 * The two end labels are stored at the "end" of the disk, but
6631 * the end of the disk (vdev_psize) is aligned to
6632 * sizeof (vdev_label_t).
6633 */
6634 uint64_t psize = P2ALIGN_TYPED(fsize, sizeof (vdev_label_t),
6635 uint64_t);
6636 if ((leaf & 1) == 1 &&
6637 offset + sizeof (bad) > psize - VDEV_LABEL_END_SIZE)
6638 continue;
6639
6640 if (mirror_save != zs->zs_mirrors) {
6641 (void) close(fd);
6642 goto out;
6643 }
6644
6645 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
6646 fatal(B_TRUE,
6647 "can't inject bad word at 0x%"PRIx64" in %s",
6648 offset, pathrand);
6649
6650 if (ztest_opts.zo_verbose >= 7)
6651 (void) printf("injected bad word into %s,"
6652 " offset 0x%"PRIx64"\n", pathrand, offset);
6653
6654 injected = B_TRUE;
6655 }
6656
6657 (void) close(fd);
6658 out:
6659 mutex_exit(&ztest_vdev_lock);
6660
6661 if (injected && ztest_opts.zo_raid_do_expand) {
6662 int error = spa_scan(spa, POOL_SCAN_SCRUB);
6663 if (error == 0) {
6664 while (dsl_scan_scrubbing(spa_get_dsl(spa)))
6665 txg_wait_synced(spa_get_dsl(spa), 0);
6666 }
6667 }
6668
6669 umem_free(path0, MAXPATHLEN);
6670 umem_free(pathrand, MAXPATHLEN);
6671 }
6672
6673 /*
6674 * By design ztest will never inject uncorrectable damage in to the pool.
6675 * Issue a scrub, wait for it to complete, and verify there is never any
6676 * persistent damage.
6677 *
6678 * Only after a full scrub has been completed is it safe to start injecting
6679 * data corruption. See the comment in zfs_fault_inject().
6680 */
6681 static int
ztest_scrub_impl(spa_t * spa)6682 ztest_scrub_impl(spa_t *spa)
6683 {
6684 int error = spa_scan(spa, POOL_SCAN_SCRUB);
6685 if (error)
6686 return (error);
6687
6688 while (dsl_scan_scrubbing(spa_get_dsl(spa)))
6689 txg_wait_synced(spa_get_dsl(spa), 0);
6690
6691 if (spa_approx_errlog_size(spa) > 0)
6692 return (ECKSUM);
6693
6694 ztest_pool_scrubbed = B_TRUE;
6695
6696 return (0);
6697 }
6698
6699 /*
6700 * Scrub the pool.
6701 */
6702 void
ztest_scrub(ztest_ds_t * zd,uint64_t id)6703 ztest_scrub(ztest_ds_t *zd, uint64_t id)
6704 {
6705 (void) zd, (void) id;
6706 spa_t *spa = ztest_spa;
6707 int error;
6708
6709 /*
6710 * Scrub in progress by device removal.
6711 */
6712 if (ztest_device_removal_active)
6713 return;
6714
6715 /*
6716 * Start a scrub, wait a moment, then force a restart.
6717 */
6718 (void) spa_scan(spa, POOL_SCAN_SCRUB);
6719 (void) poll(NULL, 0, 100);
6720
6721 error = ztest_scrub_impl(spa);
6722 if (error == EBUSY)
6723 error = 0;
6724 ASSERT0(error);
6725 }
6726
6727 /*
6728 * Change the guid for the pool.
6729 */
6730 void
ztest_reguid(ztest_ds_t * zd,uint64_t id)6731 ztest_reguid(ztest_ds_t *zd, uint64_t id)
6732 {
6733 (void) zd, (void) id;
6734 spa_t *spa = ztest_spa;
6735 uint64_t orig, load;
6736 int error;
6737 ztest_shared_t *zs = ztest_shared;
6738
6739 if (ztest_opts.zo_mmp_test)
6740 return;
6741
6742 orig = spa_guid(spa);
6743 load = spa_load_guid(spa);
6744
6745 (void) pthread_rwlock_wrlock(&ztest_name_lock);
6746 error = spa_change_guid(spa);
6747 zs->zs_guid = spa_guid(spa);
6748 (void) pthread_rwlock_unlock(&ztest_name_lock);
6749
6750 if (error != 0)
6751 return;
6752
6753 if (ztest_opts.zo_verbose >= 4) {
6754 (void) printf("Changed guid old %"PRIu64" -> %"PRIu64"\n",
6755 orig, spa_guid(spa));
6756 }
6757
6758 VERIFY3U(orig, !=, spa_guid(spa));
6759 VERIFY3U(load, ==, spa_load_guid(spa));
6760 }
6761
6762 void
ztest_blake3(ztest_ds_t * zd,uint64_t id)6763 ztest_blake3(ztest_ds_t *zd, uint64_t id)
6764 {
6765 (void) zd, (void) id;
6766 hrtime_t end = gethrtime() + NANOSEC;
6767 zio_cksum_salt_t salt;
6768 void *salt_ptr = &salt.zcs_bytes;
6769 struct abd *abd_data, *abd_meta;
6770 void *buf, *templ;
6771 int i, *ptr;
6772 uint32_t size;
6773 BLAKE3_CTX ctx;
6774 const zfs_impl_t *blake3 = zfs_impl_get_ops("blake3");
6775
6776 size = ztest_random_blocksize();
6777 buf = umem_alloc(size, UMEM_NOFAIL);
6778 abd_data = abd_alloc(size, B_FALSE);
6779 abd_meta = abd_alloc(size, B_TRUE);
6780
6781 for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
6782 *ptr = ztest_random(UINT_MAX);
6783 memset(salt_ptr, 'A', 32);
6784
6785 abd_copy_from_buf_off(abd_data, buf, 0, size);
6786 abd_copy_from_buf_off(abd_meta, buf, 0, size);
6787
6788 while (gethrtime() <= end) {
6789 int run_count = 100;
6790 zio_cksum_t zc_ref1, zc_ref2;
6791 zio_cksum_t zc_res1, zc_res2;
6792
6793 void *ref1 = &zc_ref1;
6794 void *ref2 = &zc_ref2;
6795 void *res1 = &zc_res1;
6796 void *res2 = &zc_res2;
6797
6798 /* BLAKE3_KEY_LEN = 32 */
6799 VERIFY0(blake3->setname("generic"));
6800 templ = abd_checksum_blake3_tmpl_init(&salt);
6801 Blake3_InitKeyed(&ctx, salt_ptr);
6802 Blake3_Update(&ctx, buf, size);
6803 Blake3_Final(&ctx, ref1);
6804 zc_ref2 = zc_ref1;
6805 ZIO_CHECKSUM_BSWAP(&zc_ref2);
6806 abd_checksum_blake3_tmpl_free(templ);
6807
6808 VERIFY0(blake3->setname("cycle"));
6809 while (run_count-- > 0) {
6810
6811 /* Test current implementation */
6812 Blake3_InitKeyed(&ctx, salt_ptr);
6813 Blake3_Update(&ctx, buf, size);
6814 Blake3_Final(&ctx, res1);
6815 zc_res2 = zc_res1;
6816 ZIO_CHECKSUM_BSWAP(&zc_res2);
6817
6818 VERIFY0(memcmp(ref1, res1, 32));
6819 VERIFY0(memcmp(ref2, res2, 32));
6820
6821 /* Test ABD - data */
6822 templ = abd_checksum_blake3_tmpl_init(&salt);
6823 abd_checksum_blake3_native(abd_data, size,
6824 templ, &zc_res1);
6825 abd_checksum_blake3_byteswap(abd_data, size,
6826 templ, &zc_res2);
6827
6828 VERIFY0(memcmp(ref1, res1, 32));
6829 VERIFY0(memcmp(ref2, res2, 32));
6830
6831 /* Test ABD - metadata */
6832 abd_checksum_blake3_native(abd_meta, size,
6833 templ, &zc_res1);
6834 abd_checksum_blake3_byteswap(abd_meta, size,
6835 templ, &zc_res2);
6836 abd_checksum_blake3_tmpl_free(templ);
6837
6838 VERIFY0(memcmp(ref1, res1, 32));
6839 VERIFY0(memcmp(ref2, res2, 32));
6840
6841 }
6842 }
6843
6844 abd_free(abd_data);
6845 abd_free(abd_meta);
6846 umem_free(buf, size);
6847 }
6848
6849 void
ztest_fletcher(ztest_ds_t * zd,uint64_t id)6850 ztest_fletcher(ztest_ds_t *zd, uint64_t id)
6851 {
6852 (void) zd, (void) id;
6853 hrtime_t end = gethrtime() + NANOSEC;
6854
6855 while (gethrtime() <= end) {
6856 int run_count = 100;
6857 void *buf;
6858 struct abd *abd_data, *abd_meta;
6859 uint32_t size;
6860 int *ptr;
6861 int i;
6862 zio_cksum_t zc_ref;
6863 zio_cksum_t zc_ref_byteswap;
6864
6865 size = ztest_random_blocksize();
6866
6867 buf = umem_alloc(size, UMEM_NOFAIL);
6868 abd_data = abd_alloc(size, B_FALSE);
6869 abd_meta = abd_alloc(size, B_TRUE);
6870
6871 for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
6872 *ptr = ztest_random(UINT_MAX);
6873
6874 abd_copy_from_buf_off(abd_data, buf, 0, size);
6875 abd_copy_from_buf_off(abd_meta, buf, 0, size);
6876
6877 VERIFY0(fletcher_4_impl_set("scalar"));
6878 fletcher_4_native(buf, size, NULL, &zc_ref);
6879 fletcher_4_byteswap(buf, size, NULL, &zc_ref_byteswap);
6880
6881 VERIFY0(fletcher_4_impl_set("cycle"));
6882 while (run_count-- > 0) {
6883 zio_cksum_t zc;
6884 zio_cksum_t zc_byteswap;
6885
6886 fletcher_4_byteswap(buf, size, NULL, &zc_byteswap);
6887 fletcher_4_native(buf, size, NULL, &zc);
6888
6889 VERIFY0(memcmp(&zc, &zc_ref, sizeof (zc)));
6890 VERIFY0(memcmp(&zc_byteswap, &zc_ref_byteswap,
6891 sizeof (zc_byteswap)));
6892
6893 /* Test ABD - data */
6894 abd_fletcher_4_byteswap(abd_data, size, NULL,
6895 &zc_byteswap);
6896 abd_fletcher_4_native(abd_data, size, NULL, &zc);
6897
6898 VERIFY0(memcmp(&zc, &zc_ref, sizeof (zc)));
6899 VERIFY0(memcmp(&zc_byteswap, &zc_ref_byteswap,
6900 sizeof (zc_byteswap)));
6901
6902 /* Test ABD - metadata */
6903 abd_fletcher_4_byteswap(abd_meta, size, NULL,
6904 &zc_byteswap);
6905 abd_fletcher_4_native(abd_meta, size, NULL, &zc);
6906
6907 VERIFY0(memcmp(&zc, &zc_ref, sizeof (zc)));
6908 VERIFY0(memcmp(&zc_byteswap, &zc_ref_byteswap,
6909 sizeof (zc_byteswap)));
6910
6911 }
6912
6913 umem_free(buf, size);
6914 abd_free(abd_data);
6915 abd_free(abd_meta);
6916 }
6917 }
6918
6919 void
ztest_fletcher_incr(ztest_ds_t * zd,uint64_t id)6920 ztest_fletcher_incr(ztest_ds_t *zd, uint64_t id)
6921 {
6922 (void) zd, (void) id;
6923 void *buf;
6924 size_t size;
6925 int *ptr;
6926 int i;
6927 zio_cksum_t zc_ref;
6928 zio_cksum_t zc_ref_bswap;
6929
6930 hrtime_t end = gethrtime() + NANOSEC;
6931
6932 while (gethrtime() <= end) {
6933 int run_count = 100;
6934
6935 size = ztest_random_blocksize();
6936 buf = umem_alloc(size, UMEM_NOFAIL);
6937
6938 for (i = 0, ptr = buf; i < size / sizeof (*ptr); i++, ptr++)
6939 *ptr = ztest_random(UINT_MAX);
6940
6941 VERIFY0(fletcher_4_impl_set("scalar"));
6942 fletcher_4_native(buf, size, NULL, &zc_ref);
6943 fletcher_4_byteswap(buf, size, NULL, &zc_ref_bswap);
6944
6945 VERIFY0(fletcher_4_impl_set("cycle"));
6946
6947 while (run_count-- > 0) {
6948 zio_cksum_t zc;
6949 zio_cksum_t zc_bswap;
6950 size_t pos = 0;
6951
6952 ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
6953 ZIO_SET_CHECKSUM(&zc_bswap, 0, 0, 0, 0);
6954
6955 while (pos < size) {
6956 size_t inc = 64 * ztest_random(size / 67);
6957 /* sometimes add few bytes to test non-simd */
6958 if (ztest_random(100) < 10)
6959 inc += P2ALIGN_TYPED(ztest_random(64),
6960 sizeof (uint32_t), uint64_t);
6961
6962 if (inc > (size - pos))
6963 inc = size - pos;
6964
6965 fletcher_4_incremental_native(buf + pos, inc,
6966 &zc);
6967 fletcher_4_incremental_byteswap(buf + pos, inc,
6968 &zc_bswap);
6969
6970 pos += inc;
6971 }
6972
6973 VERIFY3U(pos, ==, size);
6974
6975 VERIFY(ZIO_CHECKSUM_EQUAL(zc, zc_ref));
6976 VERIFY(ZIO_CHECKSUM_EQUAL(zc_bswap, zc_ref_bswap));
6977
6978 /*
6979 * verify if incremental on the whole buffer is
6980 * equivalent to non-incremental version
6981 */
6982 ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
6983 ZIO_SET_CHECKSUM(&zc_bswap, 0, 0, 0, 0);
6984
6985 fletcher_4_incremental_native(buf, size, &zc);
6986 fletcher_4_incremental_byteswap(buf, size, &zc_bswap);
6987
6988 VERIFY(ZIO_CHECKSUM_EQUAL(zc, zc_ref));
6989 VERIFY(ZIO_CHECKSUM_EQUAL(zc_bswap, zc_ref_bswap));
6990 }
6991
6992 umem_free(buf, size);
6993 }
6994 }
6995
6996 static int
ztest_set_global_vars(void)6997 ztest_set_global_vars(void)
6998 {
6999 for (size_t i = 0; i < ztest_opts.zo_gvars_count; i++) {
7000 char *kv = ztest_opts.zo_gvars[i];
7001 VERIFY3U(strlen(kv), <=, ZO_GVARS_MAX_ARGLEN);
7002 VERIFY3U(strlen(kv), >, 0);
7003 int err = set_global_var(kv);
7004 if (ztest_opts.zo_verbose > 0) {
7005 (void) printf("setting global var %s ... %s\n", kv,
7006 err ? "failed" : "ok");
7007 }
7008 if (err != 0) {
7009 (void) fprintf(stderr,
7010 "failed to set global var '%s'\n", kv);
7011 return (err);
7012 }
7013 }
7014 return (0);
7015 }
7016
7017 static char **
ztest_global_vars_to_zdb_args(void)7018 ztest_global_vars_to_zdb_args(void)
7019 {
7020 char **args = calloc(2*ztest_opts.zo_gvars_count + 1, sizeof (char *));
7021 char **cur = args;
7022 if (args == NULL)
7023 return (NULL);
7024 for (size_t i = 0; i < ztest_opts.zo_gvars_count; i++) {
7025 *cur++ = (char *)"-o";
7026 *cur++ = ztest_opts.zo_gvars[i];
7027 }
7028 ASSERT3P(cur, ==, &args[2*ztest_opts.zo_gvars_count]);
7029 *cur = NULL;
7030 return (args);
7031 }
7032
7033 /* The end of strings is indicated by a NULL element */
7034 static char *
join_strings(char ** strings,const char * sep)7035 join_strings(char **strings, const char *sep)
7036 {
7037 size_t totallen = 0;
7038 for (char **sp = strings; *sp != NULL; sp++) {
7039 totallen += strlen(*sp);
7040 totallen += strlen(sep);
7041 }
7042 if (totallen > 0) {
7043 ASSERT(totallen >= strlen(sep));
7044 totallen -= strlen(sep);
7045 }
7046
7047 size_t buflen = totallen + 1;
7048 char *o = umem_alloc(buflen, UMEM_NOFAIL); /* trailing 0 byte */
7049 o[0] = '\0';
7050 for (char **sp = strings; *sp != NULL; sp++) {
7051 size_t would;
7052 would = strlcat(o, *sp, buflen);
7053 VERIFY3U(would, <, buflen);
7054 if (*(sp+1) == NULL) {
7055 break;
7056 }
7057 would = strlcat(o, sep, buflen);
7058 VERIFY3U(would, <, buflen);
7059 }
7060 ASSERT3S(strlen(o), ==, totallen);
7061 return (o);
7062 }
7063
7064 static int
ztest_check_path(char * path)7065 ztest_check_path(char *path)
7066 {
7067 struct stat s;
7068 /* return true on success */
7069 return (!stat(path, &s));
7070 }
7071
7072 static void
ztest_get_zdb_bin(char * bin,int len)7073 ztest_get_zdb_bin(char *bin, int len)
7074 {
7075 char *zdb_path;
7076 /*
7077 * Try to use $ZDB and in-tree zdb path. If not successful, just
7078 * let popen to search through PATH.
7079 */
7080 if ((zdb_path = getenv("ZDB"))) {
7081 strlcpy(bin, zdb_path, len); /* In env */
7082 if (!ztest_check_path(bin)) {
7083 ztest_dump_core = 0;
7084 fatal(B_TRUE, "invalid ZDB '%s'", bin);
7085 }
7086 return;
7087 }
7088
7089 VERIFY3P(realpath(getexecname(), bin), !=, NULL);
7090 if (strstr(bin, ".libs/ztest")) {
7091 strstr(bin, ".libs/ztest")[0] = '\0'; /* In-tree */
7092 strcat(bin, "zdb");
7093 if (ztest_check_path(bin))
7094 return;
7095 }
7096 strcpy(bin, "zdb");
7097 }
7098
7099 static vdev_t *
ztest_random_concrete_vdev_leaf(vdev_t * vd)7100 ztest_random_concrete_vdev_leaf(vdev_t *vd)
7101 {
7102 if (vd == NULL)
7103 return (NULL);
7104
7105 if (vd->vdev_children == 0)
7106 return (vd);
7107
7108 vdev_t *eligible[vd->vdev_children];
7109 int eligible_idx = 0, i;
7110 for (i = 0; i < vd->vdev_children; i++) {
7111 vdev_t *cvd = vd->vdev_child[i];
7112 if (cvd->vdev_top->vdev_removing)
7113 continue;
7114 if (cvd->vdev_children > 0 ||
7115 (vdev_is_concrete(cvd) && !cvd->vdev_detached)) {
7116 eligible[eligible_idx++] = cvd;
7117 }
7118 }
7119 VERIFY3S(eligible_idx, >, 0);
7120
7121 uint64_t child_no = ztest_random(eligible_idx);
7122 return (ztest_random_concrete_vdev_leaf(eligible[child_no]));
7123 }
7124
7125 void
ztest_initialize(ztest_ds_t * zd,uint64_t id)7126 ztest_initialize(ztest_ds_t *zd, uint64_t id)
7127 {
7128 (void) zd, (void) id;
7129 spa_t *spa = ztest_spa;
7130 int error = 0;
7131
7132 mutex_enter(&ztest_vdev_lock);
7133
7134 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
7135
7136 /* Random leaf vdev */
7137 vdev_t *rand_vd = ztest_random_concrete_vdev_leaf(spa->spa_root_vdev);
7138 if (rand_vd == NULL) {
7139 spa_config_exit(spa, SCL_VDEV, FTAG);
7140 mutex_exit(&ztest_vdev_lock);
7141 return;
7142 }
7143
7144 /*
7145 * The random vdev we've selected may change as soon as we
7146 * drop the spa_config_lock. We create local copies of things
7147 * we're interested in.
7148 */
7149 uint64_t guid = rand_vd->vdev_guid;
7150 char *path = strdup(rand_vd->vdev_path);
7151 boolean_t active = rand_vd->vdev_initialize_thread != NULL;
7152
7153 zfs_dbgmsg("vd %px, guid %llu", rand_vd, (u_longlong_t)guid);
7154 spa_config_exit(spa, SCL_VDEV, FTAG);
7155
7156 uint64_t cmd = ztest_random(POOL_INITIALIZE_FUNCS);
7157
7158 nvlist_t *vdev_guids = fnvlist_alloc();
7159 nvlist_t *vdev_errlist = fnvlist_alloc();
7160 fnvlist_add_uint64(vdev_guids, path, guid);
7161 error = spa_vdev_initialize(spa, vdev_guids, cmd, vdev_errlist);
7162 fnvlist_free(vdev_guids);
7163 fnvlist_free(vdev_errlist);
7164
7165 switch (cmd) {
7166 case POOL_INITIALIZE_CANCEL:
7167 if (ztest_opts.zo_verbose >= 4) {
7168 (void) printf("Cancel initialize %s", path);
7169 if (!active)
7170 (void) printf(" failed (no initialize active)");
7171 (void) printf("\n");
7172 }
7173 break;
7174 case POOL_INITIALIZE_START:
7175 if (ztest_opts.zo_verbose >= 4) {
7176 (void) printf("Start initialize %s", path);
7177 if (active && error == 0)
7178 (void) printf(" failed (already active)");
7179 else if (error != 0)
7180 (void) printf(" failed (error %d)", error);
7181 (void) printf("\n");
7182 }
7183 break;
7184 case POOL_INITIALIZE_SUSPEND:
7185 if (ztest_opts.zo_verbose >= 4) {
7186 (void) printf("Suspend initialize %s", path);
7187 if (!active)
7188 (void) printf(" failed (no initialize active)");
7189 (void) printf("\n");
7190 }
7191 break;
7192 }
7193 free(path);
7194 mutex_exit(&ztest_vdev_lock);
7195 }
7196
7197 void
ztest_trim(ztest_ds_t * zd,uint64_t id)7198 ztest_trim(ztest_ds_t *zd, uint64_t id)
7199 {
7200 (void) zd, (void) id;
7201 spa_t *spa = ztest_spa;
7202 int error = 0;
7203
7204 mutex_enter(&ztest_vdev_lock);
7205
7206 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
7207
7208 /* Random leaf vdev */
7209 vdev_t *rand_vd = ztest_random_concrete_vdev_leaf(spa->spa_root_vdev);
7210 if (rand_vd == NULL) {
7211 spa_config_exit(spa, SCL_VDEV, FTAG);
7212 mutex_exit(&ztest_vdev_lock);
7213 return;
7214 }
7215
7216 /*
7217 * The random vdev we've selected may change as soon as we
7218 * drop the spa_config_lock. We create local copies of things
7219 * we're interested in.
7220 */
7221 uint64_t guid = rand_vd->vdev_guid;
7222 char *path = strdup(rand_vd->vdev_path);
7223 boolean_t active = rand_vd->vdev_trim_thread != NULL;
7224
7225 zfs_dbgmsg("vd %p, guid %llu", rand_vd, (u_longlong_t)guid);
7226 spa_config_exit(spa, SCL_VDEV, FTAG);
7227
7228 uint64_t cmd = ztest_random(POOL_TRIM_FUNCS);
7229 uint64_t rate = 1 << ztest_random(30);
7230 boolean_t partial = (ztest_random(5) > 0);
7231 boolean_t secure = (ztest_random(5) > 0);
7232
7233 nvlist_t *vdev_guids = fnvlist_alloc();
7234 nvlist_t *vdev_errlist = fnvlist_alloc();
7235 fnvlist_add_uint64(vdev_guids, path, guid);
7236 error = spa_vdev_trim(spa, vdev_guids, cmd, rate, partial,
7237 secure, vdev_errlist);
7238 fnvlist_free(vdev_guids);
7239 fnvlist_free(vdev_errlist);
7240
7241 switch (cmd) {
7242 case POOL_TRIM_CANCEL:
7243 if (ztest_opts.zo_verbose >= 4) {
7244 (void) printf("Cancel TRIM %s", path);
7245 if (!active)
7246 (void) printf(" failed (no TRIM active)");
7247 (void) printf("\n");
7248 }
7249 break;
7250 case POOL_TRIM_START:
7251 if (ztest_opts.zo_verbose >= 4) {
7252 (void) printf("Start TRIM %s", path);
7253 if (active && error == 0)
7254 (void) printf(" failed (already active)");
7255 else if (error != 0)
7256 (void) printf(" failed (error %d)", error);
7257 (void) printf("\n");
7258 }
7259 break;
7260 case POOL_TRIM_SUSPEND:
7261 if (ztest_opts.zo_verbose >= 4) {
7262 (void) printf("Suspend TRIM %s", path);
7263 if (!active)
7264 (void) printf(" failed (no TRIM active)");
7265 (void) printf("\n");
7266 }
7267 break;
7268 }
7269 free(path);
7270 mutex_exit(&ztest_vdev_lock);
7271 }
7272
7273 /*
7274 * Verify pool integrity by running zdb.
7275 */
7276 static void
ztest_run_zdb(uint64_t guid)7277 ztest_run_zdb(uint64_t guid)
7278 {
7279 int status;
7280 char *bin;
7281 char *zdb;
7282 char *zbuf;
7283 const int len = MAXPATHLEN + MAXNAMELEN + 20;
7284 FILE *fp;
7285
7286 bin = umem_alloc(len, UMEM_NOFAIL);
7287 zdb = umem_alloc(len, UMEM_NOFAIL);
7288 zbuf = umem_alloc(1024, UMEM_NOFAIL);
7289
7290 ztest_get_zdb_bin(bin, len);
7291
7292 char **set_gvars_args = ztest_global_vars_to_zdb_args();
7293 if (set_gvars_args == NULL) {
7294 fatal(B_FALSE, "Failed to allocate memory in "
7295 "ztest_global_vars_to_zdb_args(). Cannot run zdb.\n");
7296 }
7297 char *set_gvars_args_joined = join_strings(set_gvars_args, " ");
7298 free(set_gvars_args);
7299
7300 size_t would = snprintf(zdb, len,
7301 "%s -bcc%s%s -G -d -Y -e -y %s -p %s %"PRIu64,
7302 bin,
7303 ztest_opts.zo_verbose >= 3 ? "s" : "",
7304 ztest_opts.zo_verbose >= 4 ? "v" : "",
7305 set_gvars_args_joined,
7306 ztest_opts.zo_dir,
7307 guid);
7308 ASSERT3U(would, <, len);
7309
7310 umem_free(set_gvars_args_joined, strlen(set_gvars_args_joined) + 1);
7311
7312 if (ztest_opts.zo_verbose >= 5)
7313 (void) printf("Executing %s\n", zdb);
7314
7315 fp = popen(zdb, "r");
7316
7317 while (fgets(zbuf, 1024, fp) != NULL)
7318 if (ztest_opts.zo_verbose >= 3)
7319 (void) printf("%s", zbuf);
7320
7321 status = pclose(fp);
7322
7323 if (status == 0)
7324 goto out;
7325
7326 ztest_dump_core = 0;
7327 if (WIFEXITED(status))
7328 fatal(B_FALSE, "'%s' exit code %d", zdb, WEXITSTATUS(status));
7329 else
7330 fatal(B_FALSE, "'%s' died with signal %d",
7331 zdb, WTERMSIG(status));
7332 out:
7333 umem_free(bin, len);
7334 umem_free(zdb, len);
7335 umem_free(zbuf, 1024);
7336 }
7337
7338 static void
ztest_walk_pool_directory(const char * header)7339 ztest_walk_pool_directory(const char *header)
7340 {
7341 spa_t *spa = NULL;
7342
7343 if (ztest_opts.zo_verbose >= 6)
7344 (void) puts(header);
7345
7346 mutex_enter(&spa_namespace_lock);
7347 while ((spa = spa_next(spa)) != NULL)
7348 if (ztest_opts.zo_verbose >= 6)
7349 (void) printf("\t%s\n", spa_name(spa));
7350 mutex_exit(&spa_namespace_lock);
7351 }
7352
7353 static void
ztest_spa_import_export(char * oldname,char * newname)7354 ztest_spa_import_export(char *oldname, char *newname)
7355 {
7356 nvlist_t *config, *newconfig;
7357 uint64_t pool_guid;
7358 spa_t *spa;
7359 int error;
7360
7361 if (ztest_opts.zo_verbose >= 4) {
7362 (void) printf("import/export: old = %s, new = %s\n",
7363 oldname, newname);
7364 }
7365
7366 /*
7367 * Clean up from previous runs.
7368 */
7369 (void) spa_destroy(newname);
7370
7371 /*
7372 * Get the pool's configuration and guid.
7373 */
7374 VERIFY0(spa_open(oldname, &spa, FTAG));
7375
7376 /*
7377 * Kick off a scrub to tickle scrub/export races.
7378 */
7379 if (ztest_random(2) == 0)
7380 (void) spa_scan(spa, POOL_SCAN_SCRUB);
7381
7382 pool_guid = spa_guid(spa);
7383 spa_close(spa, FTAG);
7384
7385 ztest_walk_pool_directory("pools before export");
7386
7387 /*
7388 * Export it.
7389 */
7390 VERIFY0(spa_export(oldname, &config, B_FALSE, B_FALSE));
7391
7392 ztest_walk_pool_directory("pools after export");
7393
7394 /*
7395 * Try to import it.
7396 */
7397 newconfig = spa_tryimport(config);
7398 ASSERT3P(newconfig, !=, NULL);
7399 fnvlist_free(newconfig);
7400
7401 /*
7402 * Import it under the new name.
7403 */
7404 error = spa_import(newname, config, NULL, 0);
7405 if (error != 0) {
7406 dump_nvlist(config, 0);
7407 fatal(B_FALSE, "couldn't import pool %s as %s: error %u",
7408 oldname, newname, error);
7409 }
7410
7411 ztest_walk_pool_directory("pools after import");
7412
7413 /*
7414 * Try to import it again -- should fail with EEXIST.
7415 */
7416 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0));
7417
7418 /*
7419 * Try to import it under a different name -- should fail with EEXIST.
7420 */
7421 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0));
7422
7423 /*
7424 * Verify that the pool is no longer visible under the old name.
7425 */
7426 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
7427
7428 /*
7429 * Verify that we can open and close the pool using the new name.
7430 */
7431 VERIFY0(spa_open(newname, &spa, FTAG));
7432 ASSERT3U(pool_guid, ==, spa_guid(spa));
7433 spa_close(spa, FTAG);
7434
7435 fnvlist_free(config);
7436 }
7437
7438 static void
ztest_resume(spa_t * spa)7439 ztest_resume(spa_t *spa)
7440 {
7441 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6)
7442 (void) printf("resuming from suspended state\n");
7443 spa_vdev_state_enter(spa, SCL_NONE);
7444 vdev_clear(spa, NULL);
7445 (void) spa_vdev_state_exit(spa, NULL, 0);
7446 (void) zio_resume(spa);
7447 }
7448
7449 static __attribute__((noreturn)) void
ztest_resume_thread(void * arg)7450 ztest_resume_thread(void *arg)
7451 {
7452 spa_t *spa = arg;
7453
7454 while (!ztest_exiting) {
7455 if (spa_suspended(spa))
7456 ztest_resume(spa);
7457 (void) poll(NULL, 0, 100);
7458
7459 /*
7460 * Periodically change the zfs_compressed_arc_enabled setting.
7461 */
7462 if (ztest_random(10) == 0)
7463 zfs_compressed_arc_enabled = ztest_random(2);
7464
7465 /*
7466 * Periodically change the zfs_abd_scatter_enabled setting.
7467 */
7468 if (ztest_random(10) == 0)
7469 zfs_abd_scatter_enabled = ztest_random(2);
7470 }
7471
7472 thread_exit();
7473 }
7474
7475 static __attribute__((noreturn)) void
ztest_deadman_thread(void * arg)7476 ztest_deadman_thread(void *arg)
7477 {
7478 ztest_shared_t *zs = arg;
7479 spa_t *spa = ztest_spa;
7480 hrtime_t delay, overdue, last_run = gethrtime();
7481
7482 delay = (zs->zs_thread_stop - zs->zs_thread_start) +
7483 MSEC2NSEC(zfs_deadman_synctime_ms);
7484
7485 while (!ztest_exiting) {
7486 /*
7487 * Wait for the delay timer while checking occasionally
7488 * if we should stop.
7489 */
7490 if (gethrtime() < last_run + delay) {
7491 (void) poll(NULL, 0, 1000);
7492 continue;
7493 }
7494
7495 /*
7496 * If the pool is suspended then fail immediately. Otherwise,
7497 * check to see if the pool is making any progress. If
7498 * vdev_deadman() discovers that there hasn't been any recent
7499 * I/Os then it will end up aborting the tests.
7500 */
7501 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) {
7502 fatal(B_FALSE,
7503 "aborting test after %llu seconds because "
7504 "pool has transitioned to a suspended state.",
7505 (u_longlong_t)zfs_deadman_synctime_ms / 1000);
7506 }
7507 vdev_deadman(spa->spa_root_vdev, FTAG);
7508
7509 /*
7510 * If the process doesn't complete within a grace period of
7511 * zfs_deadman_synctime_ms over the expected finish time,
7512 * then it may be hung and is terminated.
7513 */
7514 overdue = zs->zs_proc_stop + MSEC2NSEC(zfs_deadman_synctime_ms);
7515 if (gethrtime() > overdue) {
7516 fatal(B_FALSE,
7517 "aborting test after %llu seconds because "
7518 "the process is overdue for termination.",
7519 (gethrtime() - zs->zs_proc_start) / NANOSEC);
7520 }
7521
7522 (void) printf("ztest has been running for %lld seconds\n",
7523 (gethrtime() - zs->zs_proc_start) / NANOSEC);
7524
7525 last_run = gethrtime();
7526 delay = MSEC2NSEC(zfs_deadman_checktime_ms);
7527 }
7528
7529 thread_exit();
7530 }
7531
7532 static void
ztest_execute(int test,ztest_info_t * zi,uint64_t id)7533 ztest_execute(int test, ztest_info_t *zi, uint64_t id)
7534 {
7535 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets];
7536 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test);
7537 hrtime_t functime = gethrtime();
7538 int i;
7539
7540 for (i = 0; i < zi->zi_iters; i++)
7541 zi->zi_func(zd, id);
7542
7543 functime = gethrtime() - functime;
7544
7545 atomic_add_64(&zc->zc_count, 1);
7546 atomic_add_64(&zc->zc_time, functime);
7547
7548 if (ztest_opts.zo_verbose >= 4)
7549 (void) printf("%6.2f sec in %s\n",
7550 (double)functime / NANOSEC, zi->zi_funcname);
7551 }
7552
7553 typedef struct ztest_raidz_expand_io {
7554 uint64_t rzx_id;
7555 uint64_t rzx_amount;
7556 uint64_t rzx_bufsize;
7557 const void *rzx_buffer;
7558 uint64_t rzx_alloc_max;
7559 spa_t *rzx_spa;
7560 } ztest_expand_io_t;
7561
7562 #undef OD_ARRAY_SIZE
7563 #define OD_ARRAY_SIZE 10
7564
7565 /*
7566 * Write a request amount of data to some dataset objects.
7567 * There will be ztest_opts.zo_threads count of these running in parallel.
7568 */
7569 static __attribute__((noreturn)) void
ztest_rzx_thread(void * arg)7570 ztest_rzx_thread(void *arg)
7571 {
7572 ztest_expand_io_t *info = (ztest_expand_io_t *)arg;
7573 ztest_od_t *od;
7574 int batchsize;
7575 int od_size;
7576 ztest_ds_t *zd = &ztest_ds[info->rzx_id % ztest_opts.zo_datasets];
7577 spa_t *spa = info->rzx_spa;
7578
7579 od_size = sizeof (ztest_od_t) * OD_ARRAY_SIZE;
7580 od = umem_alloc(od_size, UMEM_NOFAIL);
7581 batchsize = OD_ARRAY_SIZE;
7582
7583 /* Create objects to write to */
7584 for (int b = 0; b < batchsize; b++) {
7585 ztest_od_init(od + b, info->rzx_id, FTAG, b,
7586 DMU_OT_UINT64_OTHER, 0, 0, 0);
7587 }
7588 if (ztest_object_init(zd, od, od_size, B_FALSE) != 0) {
7589 umem_free(od, od_size);
7590 thread_exit();
7591 }
7592
7593 for (uint64_t offset = 0, written = 0; written < info->rzx_amount;
7594 offset += info->rzx_bufsize) {
7595 /* write to 10 objects */
7596 for (int i = 0; i < batchsize && written < info->rzx_amount;
7597 i++) {
7598 (void) pthread_rwlock_rdlock(&zd->zd_zilog_lock);
7599 ztest_write(zd, od[i].od_object, offset,
7600 info->rzx_bufsize, info->rzx_buffer);
7601 (void) pthread_rwlock_unlock(&zd->zd_zilog_lock);
7602 written += info->rzx_bufsize;
7603 }
7604 txg_wait_synced(spa_get_dsl(spa), 0);
7605 /* due to inflation, we'll typically bail here */
7606 if (metaslab_class_get_alloc(spa_normal_class(spa)) >
7607 info->rzx_alloc_max) {
7608 break;
7609 }
7610 }
7611
7612 /* Remove a few objects to leave some holes in allocation space */
7613 mutex_enter(&zd->zd_dirobj_lock);
7614 (void) ztest_remove(zd, od, 2);
7615 mutex_exit(&zd->zd_dirobj_lock);
7616
7617 umem_free(od, od_size);
7618
7619 thread_exit();
7620 }
7621
7622 static __attribute__((noreturn)) void
ztest_thread(void * arg)7623 ztest_thread(void *arg)
7624 {
7625 int rand;
7626 uint64_t id = (uintptr_t)arg;
7627 ztest_shared_t *zs = ztest_shared;
7628 uint64_t call_next;
7629 hrtime_t now;
7630 ztest_info_t *zi;
7631 ztest_shared_callstate_t *zc;
7632
7633 while ((now = gethrtime()) < zs->zs_thread_stop) {
7634 /*
7635 * See if it's time to force a crash.
7636 */
7637 if (now > zs->zs_thread_kill &&
7638 raidz_expand_pause_point == RAIDZ_EXPAND_PAUSE_NONE) {
7639 ztest_kill(zs);
7640 }
7641
7642 /*
7643 * If we're getting ENOSPC with some regularity, stop.
7644 */
7645 if (zs->zs_enospc_count > 10)
7646 break;
7647
7648 /*
7649 * Pick a random function to execute.
7650 */
7651 rand = ztest_random(ZTEST_FUNCS);
7652 zi = &ztest_info[rand];
7653 zc = ZTEST_GET_SHARED_CALLSTATE(rand);
7654 call_next = zc->zc_next;
7655
7656 if (now >= call_next &&
7657 atomic_cas_64(&zc->zc_next, call_next, call_next +
7658 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) {
7659 ztest_execute(rand, zi, id);
7660 }
7661 }
7662
7663 thread_exit();
7664 }
7665
7666 static void
ztest_dataset_name(char * dsname,const char * pool,int d)7667 ztest_dataset_name(char *dsname, const char *pool, int d)
7668 {
7669 (void) snprintf(dsname, ZFS_MAX_DATASET_NAME_LEN, "%s/ds_%d", pool, d);
7670 }
7671
7672 static void
ztest_dataset_destroy(int d)7673 ztest_dataset_destroy(int d)
7674 {
7675 char name[ZFS_MAX_DATASET_NAME_LEN];
7676 int t;
7677
7678 ztest_dataset_name(name, ztest_opts.zo_pool, d);
7679
7680 if (ztest_opts.zo_verbose >= 3)
7681 (void) printf("Destroying %s to free up space\n", name);
7682
7683 /*
7684 * Cleanup any non-standard clones and snapshots. In general,
7685 * ztest thread t operates on dataset (t % zopt_datasets),
7686 * so there may be more than one thing to clean up.
7687 */
7688 for (t = d; t < ztest_opts.zo_threads;
7689 t += ztest_opts.zo_datasets)
7690 ztest_dsl_dataset_cleanup(name, t);
7691
7692 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
7693 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
7694 }
7695
7696 static void
ztest_dataset_dirobj_verify(ztest_ds_t * zd)7697 ztest_dataset_dirobj_verify(ztest_ds_t *zd)
7698 {
7699 uint64_t usedobjs, dirobjs, scratch;
7700
7701 /*
7702 * ZTEST_DIROBJ is the object directory for the entire dataset.
7703 * Therefore, the number of objects in use should equal the
7704 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself.
7705 * If not, we have an object leak.
7706 *
7707 * Note that we can only check this in ztest_dataset_open(),
7708 * when the open-context and syncing-context values agree.
7709 * That's because zap_count() returns the open-context value,
7710 * while dmu_objset_space() returns the rootbp fill count.
7711 */
7712 VERIFY0(zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs));
7713 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch);
7714 ASSERT3U(dirobjs + 1, ==, usedobjs);
7715 }
7716
7717 static int
ztest_dataset_open(int d)7718 ztest_dataset_open(int d)
7719 {
7720 ztest_ds_t *zd = &ztest_ds[d];
7721 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq;
7722 objset_t *os;
7723 zilog_t *zilog;
7724 char name[ZFS_MAX_DATASET_NAME_LEN];
7725 int error;
7726
7727 ztest_dataset_name(name, ztest_opts.zo_pool, d);
7728
7729 (void) pthread_rwlock_rdlock(&ztest_name_lock);
7730
7731 error = ztest_dataset_create(name);
7732 if (error == ENOSPC) {
7733 (void) pthread_rwlock_unlock(&ztest_name_lock);
7734 ztest_record_enospc(FTAG);
7735 return (error);
7736 }
7737 ASSERT(error == 0 || error == EEXIST);
7738
7739 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_OTHER, B_FALSE,
7740 B_TRUE, zd, &os));
7741 (void) pthread_rwlock_unlock(&ztest_name_lock);
7742
7743 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os);
7744
7745 zilog = zd->zd_zilog;
7746
7747 if (zilog->zl_header->zh_claim_lr_seq != 0 &&
7748 zilog->zl_header->zh_claim_lr_seq < committed_seq)
7749 fatal(B_FALSE, "missing log records: "
7750 "claimed %"PRIu64" < committed %"PRIu64"",
7751 zilog->zl_header->zh_claim_lr_seq, committed_seq);
7752
7753 ztest_dataset_dirobj_verify(zd);
7754
7755 zil_replay(os, zd, ztest_replay_vector);
7756
7757 ztest_dataset_dirobj_verify(zd);
7758
7759 if (ztest_opts.zo_verbose >= 6)
7760 (void) printf("%s replay %"PRIu64" blocks, "
7761 "%"PRIu64" records, seq %"PRIu64"\n",
7762 zd->zd_name,
7763 zilog->zl_parse_blk_count,
7764 zilog->zl_parse_lr_count,
7765 zilog->zl_replaying_seq);
7766
7767 zilog = zil_open(os, ztest_get_data, NULL);
7768
7769 if (zilog->zl_replaying_seq != 0 &&
7770 zilog->zl_replaying_seq < committed_seq)
7771 fatal(B_FALSE, "missing log records: "
7772 "replayed %"PRIu64" < committed %"PRIu64"",
7773 zilog->zl_replaying_seq, committed_seq);
7774
7775 return (0);
7776 }
7777
7778 static void
ztest_dataset_close(int d)7779 ztest_dataset_close(int d)
7780 {
7781 ztest_ds_t *zd = &ztest_ds[d];
7782
7783 zil_close(zd->zd_zilog);
7784 dmu_objset_disown(zd->zd_os, B_TRUE, zd);
7785
7786 ztest_zd_fini(zd);
7787 }
7788
7789 static int
ztest_replay_zil_cb(const char * name,void * arg)7790 ztest_replay_zil_cb(const char *name, void *arg)
7791 {
7792 (void) arg;
7793 objset_t *os;
7794 ztest_ds_t *zdtmp;
7795
7796 VERIFY0(ztest_dmu_objset_own(name, DMU_OST_ANY, B_TRUE,
7797 B_TRUE, FTAG, &os));
7798
7799 zdtmp = umem_alloc(sizeof (ztest_ds_t), UMEM_NOFAIL);
7800
7801 ztest_zd_init(zdtmp, NULL, os);
7802 zil_replay(os, zdtmp, ztest_replay_vector);
7803 ztest_zd_fini(zdtmp);
7804
7805 if (dmu_objset_zil(os)->zl_parse_lr_count != 0 &&
7806 ztest_opts.zo_verbose >= 6) {
7807 zilog_t *zilog = dmu_objset_zil(os);
7808
7809 (void) printf("%s replay %"PRIu64" blocks, "
7810 "%"PRIu64" records, seq %"PRIu64"\n",
7811 name,
7812 zilog->zl_parse_blk_count,
7813 zilog->zl_parse_lr_count,
7814 zilog->zl_replaying_seq);
7815 }
7816
7817 umem_free(zdtmp, sizeof (ztest_ds_t));
7818
7819 dmu_objset_disown(os, B_TRUE, FTAG);
7820 return (0);
7821 }
7822
7823 static void
ztest_freeze(void)7824 ztest_freeze(void)
7825 {
7826 ztest_ds_t *zd = &ztest_ds[0];
7827 spa_t *spa;
7828 int numloops = 0;
7829
7830 /* freeze not supported during RAIDZ expansion */
7831 if (ztest_opts.zo_raid_do_expand)
7832 return;
7833
7834 if (ztest_opts.zo_verbose >= 3)
7835 (void) printf("testing spa_freeze()...\n");
7836
7837 raidz_scratch_verify();
7838 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
7839 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
7840 VERIFY0(ztest_dataset_open(0));
7841 ztest_spa = spa;
7842
7843 /*
7844 * Force the first log block to be transactionally allocated.
7845 * We have to do this before we freeze the pool -- otherwise
7846 * the log chain won't be anchored.
7847 */
7848 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) {
7849 ztest_dmu_object_alloc_free(zd, 0);
7850 zil_commit(zd->zd_zilog, 0);
7851 }
7852
7853 txg_wait_synced(spa_get_dsl(spa), 0);
7854
7855 /*
7856 * Freeze the pool. This stops spa_sync() from doing anything,
7857 * so that the only way to record changes from now on is the ZIL.
7858 */
7859 spa_freeze(spa);
7860
7861 /*
7862 * Because it is hard to predict how much space a write will actually
7863 * require beforehand, we leave ourselves some fudge space to write over
7864 * capacity.
7865 */
7866 uint64_t capacity = metaslab_class_get_space(spa_normal_class(spa)) / 2;
7867
7868 /*
7869 * Run tests that generate log records but don't alter the pool config
7870 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc).
7871 * We do a txg_wait_synced() after each iteration to force the txg
7872 * to increase well beyond the last synced value in the uberblock.
7873 * The ZIL should be OK with that.
7874 *
7875 * Run a random number of times less than zo_maxloops and ensure we do
7876 * not run out of space on the pool.
7877 */
7878 while (ztest_random(10) != 0 &&
7879 numloops++ < ztest_opts.zo_maxloops &&
7880 metaslab_class_get_alloc(spa_normal_class(spa)) < capacity) {
7881 ztest_od_t od;
7882 ztest_od_init(&od, 0, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0, 0);
7883 VERIFY0(ztest_object_init(zd, &od, sizeof (od), B_FALSE));
7884 ztest_io(zd, od.od_object,
7885 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
7886 txg_wait_synced(spa_get_dsl(spa), 0);
7887 }
7888
7889 /*
7890 * Commit all of the changes we just generated.
7891 */
7892 zil_commit(zd->zd_zilog, 0);
7893 txg_wait_synced(spa_get_dsl(spa), 0);
7894
7895 /*
7896 * Close our dataset and close the pool.
7897 */
7898 ztest_dataset_close(0);
7899 spa_close(spa, FTAG);
7900 kernel_fini();
7901
7902 /*
7903 * Open and close the pool and dataset to induce log replay.
7904 */
7905 raidz_scratch_verify();
7906 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
7907 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
7908 ASSERT3U(spa_freeze_txg(spa), ==, UINT64_MAX);
7909 VERIFY0(ztest_dataset_open(0));
7910 ztest_spa = spa;
7911 txg_wait_synced(spa_get_dsl(spa), 0);
7912 ztest_dataset_close(0);
7913 ztest_reguid(NULL, 0);
7914
7915 spa_close(spa, FTAG);
7916 kernel_fini();
7917 }
7918
7919 static void
ztest_import_impl(void)7920 ztest_import_impl(void)
7921 {
7922 importargs_t args = { 0 };
7923 nvlist_t *cfg = NULL;
7924 int nsearch = 1;
7925 char *searchdirs[nsearch];
7926 int flags = ZFS_IMPORT_MISSING_LOG;
7927
7928 searchdirs[0] = ztest_opts.zo_dir;
7929 args.paths = nsearch;
7930 args.path = searchdirs;
7931 args.can_be_active = B_FALSE;
7932
7933 libpc_handle_t lpch = {
7934 .lpc_lib_handle = NULL,
7935 .lpc_ops = &libzpool_config_ops,
7936 .lpc_printerr = B_TRUE
7937 };
7938 VERIFY0(zpool_find_config(&lpch, ztest_opts.zo_pool, &cfg, &args));
7939 VERIFY0(spa_import(ztest_opts.zo_pool, cfg, NULL, flags));
7940 fnvlist_free(cfg);
7941 }
7942
7943 /*
7944 * Import a storage pool with the given name.
7945 */
7946 static void
ztest_import(ztest_shared_t * zs)7947 ztest_import(ztest_shared_t *zs)
7948 {
7949 spa_t *spa;
7950
7951 mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
7952 mutex_init(&ztest_checkpoint_lock, NULL, MUTEX_DEFAULT, NULL);
7953 VERIFY0(pthread_rwlock_init(&ztest_name_lock, NULL));
7954
7955 raidz_scratch_verify();
7956 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
7957
7958 ztest_import_impl();
7959
7960 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
7961 zs->zs_metaslab_sz =
7962 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
7963 zs->zs_guid = spa_guid(spa);
7964 spa_close(spa, FTAG);
7965
7966 kernel_fini();
7967
7968 if (!ztest_opts.zo_mmp_test) {
7969 ztest_run_zdb(zs->zs_guid);
7970 ztest_freeze();
7971 ztest_run_zdb(zs->zs_guid);
7972 }
7973
7974 (void) pthread_rwlock_destroy(&ztest_name_lock);
7975 mutex_destroy(&ztest_vdev_lock);
7976 mutex_destroy(&ztest_checkpoint_lock);
7977 }
7978
7979 /*
7980 * After the expansion was killed, check that the pool is healthy
7981 */
7982 static void
ztest_raidz_expand_check(spa_t * spa)7983 ztest_raidz_expand_check(spa_t *spa)
7984 {
7985 ASSERT3U(ztest_opts.zo_raidz_expand_test, ==, RAIDZ_EXPAND_KILLED);
7986 /*
7987 * Set pool check done flag, main program will run a zdb check
7988 * of the pool when we exit.
7989 */
7990 ztest_shared_opts->zo_raidz_expand_test = RAIDZ_EXPAND_CHECKED;
7991
7992 /* Wait for reflow to finish */
7993 if (ztest_opts.zo_verbose >= 1) {
7994 (void) printf("\nwaiting for reflow to finish ...\n");
7995 }
7996 pool_raidz_expand_stat_t rzx_stats;
7997 pool_raidz_expand_stat_t *pres = &rzx_stats;
7998 do {
7999 txg_wait_synced(spa_get_dsl(spa), 0);
8000 (void) poll(NULL, 0, 500); /* wait 1/2 second */
8001
8002 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
8003 (void) spa_raidz_expand_get_stats(spa, pres);
8004 spa_config_exit(spa, SCL_CONFIG, FTAG);
8005 } while (pres->pres_state != DSS_FINISHED &&
8006 pres->pres_reflowed < pres->pres_to_reflow);
8007
8008 if (ztest_opts.zo_verbose >= 1) {
8009 (void) printf("verifying an interrupted raidz "
8010 "expansion using a pool scrub ...\n");
8011 }
8012 /* Will fail here if there is non-recoverable corruption detected */
8013 VERIFY0(ztest_scrub_impl(spa));
8014 if (ztest_opts.zo_verbose >= 1) {
8015 (void) printf("raidz expansion scrub check complete\n");
8016 }
8017 }
8018
8019 /*
8020 * Start a raidz expansion test. We run some I/O on the pool for a while
8021 * to get some data in the pool. Then we grow the raidz and
8022 * kill the test at the requested offset into the reflow, verifying that
8023 * doing such does not lead to pool corruption.
8024 */
8025 static void
ztest_raidz_expand_run(ztest_shared_t * zs,spa_t * spa)8026 ztest_raidz_expand_run(ztest_shared_t *zs, spa_t *spa)
8027 {
8028 nvlist_t *root;
8029 pool_raidz_expand_stat_t rzx_stats;
8030 pool_raidz_expand_stat_t *pres = &rzx_stats;
8031 kthread_t **run_threads;
8032 vdev_t *cvd, *rzvd = spa->spa_root_vdev->vdev_child[0];
8033 int total_disks = rzvd->vdev_children;
8034 int data_disks = total_disks - vdev_get_nparity(rzvd);
8035 uint64_t alloc_goal;
8036 uint64_t csize;
8037 int error, t;
8038 int threads = ztest_opts.zo_threads;
8039 ztest_expand_io_t *thread_args;
8040
8041 ASSERT3U(ztest_opts.zo_raidz_expand_test, !=, RAIDZ_EXPAND_NONE);
8042 ASSERT3P(rzvd->vdev_ops, ==, &vdev_raidz_ops);
8043 ztest_opts.zo_raidz_expand_test = RAIDZ_EXPAND_STARTED;
8044
8045 /* Setup a 1 MiB buffer of random data */
8046 uint64_t bufsize = 1024 * 1024;
8047 void *buffer = umem_alloc(bufsize, UMEM_NOFAIL);
8048
8049 if (read(ztest_fd_rand, buffer, bufsize) != bufsize) {
8050 fatal(B_TRUE, "short read from /dev/urandom");
8051 }
8052 /*
8053 * Put some data in the pool and then attach a vdev to initiate
8054 * reflow.
8055 */
8056 run_threads = umem_zalloc(threads * sizeof (kthread_t *), UMEM_NOFAIL);
8057 thread_args = umem_zalloc(threads * sizeof (ztest_expand_io_t),
8058 UMEM_NOFAIL);
8059 /* Aim for roughly 25% of allocatable space up to 1GB */
8060 alloc_goal = (vdev_get_min_asize(rzvd) * data_disks) / total_disks;
8061 alloc_goal = MIN(alloc_goal >> 2, 1024*1024*1024);
8062 if (ztest_opts.zo_verbose >= 1) {
8063 (void) printf("adding data to pool '%s', goal %llu bytes\n",
8064 ztest_opts.zo_pool, (u_longlong_t)alloc_goal);
8065 }
8066
8067 /*
8068 * Kick off all the I/O generators that run in parallel.
8069 */
8070 for (t = 0; t < threads; t++) {
8071 if (t < ztest_opts.zo_datasets && ztest_dataset_open(t) != 0) {
8072 umem_free(run_threads, threads * sizeof (kthread_t *));
8073 umem_free(buffer, bufsize);
8074 return;
8075 }
8076 thread_args[t].rzx_id = t;
8077 thread_args[t].rzx_amount = alloc_goal / threads;
8078 thread_args[t].rzx_bufsize = bufsize;
8079 thread_args[t].rzx_buffer = buffer;
8080 thread_args[t].rzx_alloc_max = alloc_goal;
8081 thread_args[t].rzx_spa = spa;
8082 run_threads[t] = thread_create(NULL, 0, ztest_rzx_thread,
8083 &thread_args[t], 0, NULL, TS_RUN | TS_JOINABLE,
8084 defclsyspri);
8085 }
8086
8087 /*
8088 * Wait for all of the writers to complete.
8089 */
8090 for (t = 0; t < threads; t++)
8091 VERIFY0(thread_join(run_threads[t]));
8092
8093 /*
8094 * Close all datasets. This must be done after all the threads
8095 * are joined so we can be sure none of the datasets are in-use
8096 * by any of the threads.
8097 */
8098 for (t = 0; t < ztest_opts.zo_threads; t++) {
8099 if (t < ztest_opts.zo_datasets)
8100 ztest_dataset_close(t);
8101 }
8102
8103 txg_wait_synced(spa_get_dsl(spa), 0);
8104
8105 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
8106 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
8107
8108 umem_free(buffer, bufsize);
8109 umem_free(run_threads, threads * sizeof (kthread_t *));
8110 umem_free(thread_args, threads * sizeof (ztest_expand_io_t));
8111
8112 /* Set our reflow target to 25%, 50% or 75% of allocated size */
8113 uint_t multiple = ztest_random(3) + 1;
8114 uint64_t reflow_max = (rzvd->vdev_stat.vs_alloc * multiple) / 4;
8115 raidz_expand_max_reflow_bytes = reflow_max;
8116
8117 if (ztest_opts.zo_verbose >= 1) {
8118 (void) printf("running raidz expansion test, killing when "
8119 "reflow reaches %llu bytes (%u/4 of allocated space)\n",
8120 (u_longlong_t)reflow_max, multiple);
8121 }
8122
8123 /* XXX - do we want some I/O load during the reflow? */
8124
8125 /*
8126 * Use a disk size that is larger than existing ones
8127 */
8128 cvd = rzvd->vdev_child[0];
8129 csize = vdev_get_min_asize(cvd);
8130 csize += csize / 10;
8131 /*
8132 * Path to vdev to be attached
8133 */
8134 char *newpath = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
8135 (void) snprintf(newpath, MAXPATHLEN, ztest_dev_template,
8136 ztest_opts.zo_dir, ztest_opts.zo_pool, rzvd->vdev_children);
8137 /*
8138 * Build the nvlist describing newpath.
8139 */
8140 root = make_vdev_root(newpath, NULL, NULL, csize, ztest_get_ashift(),
8141 NULL, 0, 0, 1);
8142 /*
8143 * Expand the raidz vdev by attaching the new disk
8144 */
8145 if (ztest_opts.zo_verbose >= 1) {
8146 (void) printf("expanding raidz: %d wide to %d wide with '%s'\n",
8147 (int)rzvd->vdev_children, (int)rzvd->vdev_children + 1,
8148 newpath);
8149 }
8150 error = spa_vdev_attach(spa, rzvd->vdev_guid, root, B_FALSE, B_FALSE);
8151 nvlist_free(root);
8152 if (error != 0) {
8153 fatal(0, "raidz expand: attach (%s %llu) returned %d",
8154 newpath, (long long)csize, error);
8155 }
8156
8157 /*
8158 * Wait for reflow to begin
8159 */
8160 while (spa->spa_raidz_expand == NULL) {
8161 txg_wait_synced(spa_get_dsl(spa), 0);
8162 (void) poll(NULL, 0, 100); /* wait 1/10 second */
8163 }
8164 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
8165 (void) spa_raidz_expand_get_stats(spa, pres);
8166 spa_config_exit(spa, SCL_CONFIG, FTAG);
8167 while (pres->pres_state != DSS_SCANNING) {
8168 txg_wait_synced(spa_get_dsl(spa), 0);
8169 (void) poll(NULL, 0, 100); /* wait 1/10 second */
8170 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
8171 (void) spa_raidz_expand_get_stats(spa, pres);
8172 spa_config_exit(spa, SCL_CONFIG, FTAG);
8173 }
8174
8175 ASSERT3U(pres->pres_state, ==, DSS_SCANNING);
8176 ASSERT3U(pres->pres_to_reflow, !=, 0);
8177 /*
8178 * Set so when we are killed we go to raidz checking rather than
8179 * restarting test.
8180 */
8181 ztest_shared_opts->zo_raidz_expand_test = RAIDZ_EXPAND_KILLED;
8182 if (ztest_opts.zo_verbose >= 1) {
8183 (void) printf("raidz expansion reflow started, waiting for "
8184 "%llu bytes to be copied\n", (u_longlong_t)reflow_max);
8185 }
8186
8187 /*
8188 * Wait for reflow maximum to be reached and then kill the test
8189 */
8190 while (pres->pres_reflowed < reflow_max) {
8191 txg_wait_synced(spa_get_dsl(spa), 0);
8192 (void) poll(NULL, 0, 100); /* wait 1/10 second */
8193 spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
8194 (void) spa_raidz_expand_get_stats(spa, pres);
8195 spa_config_exit(spa, SCL_CONFIG, FTAG);
8196 }
8197
8198 /* Reset the reflow pause before killing */
8199 raidz_expand_max_reflow_bytes = 0;
8200
8201 if (ztest_opts.zo_verbose >= 1) {
8202 (void) printf("killing raidz expansion test after reflow "
8203 "reached %llu bytes\n", (u_longlong_t)pres->pres_reflowed);
8204 }
8205
8206 /*
8207 * Kill ourself to simulate a panic during a reflow. Our parent will
8208 * restart the test and the changed flag value will drive the test
8209 * through the scrub/check code to verify the pool is not corrupted.
8210 */
8211 ztest_kill(zs);
8212 }
8213
8214 static void
ztest_generic_run(ztest_shared_t * zs,spa_t * spa)8215 ztest_generic_run(ztest_shared_t *zs, spa_t *spa)
8216 {
8217 kthread_t **run_threads;
8218 int t;
8219
8220 run_threads = umem_zalloc(ztest_opts.zo_threads * sizeof (kthread_t *),
8221 UMEM_NOFAIL);
8222
8223 /*
8224 * Kick off all the tests that run in parallel.
8225 */
8226 for (t = 0; t < ztest_opts.zo_threads; t++) {
8227 if (t < ztest_opts.zo_datasets && ztest_dataset_open(t) != 0) {
8228 umem_free(run_threads, ztest_opts.zo_threads *
8229 sizeof (kthread_t *));
8230 return;
8231 }
8232
8233 run_threads[t] = thread_create(NULL, 0, ztest_thread,
8234 (void *)(uintptr_t)t, 0, NULL, TS_RUN | TS_JOINABLE,
8235 defclsyspri);
8236 }
8237
8238 /*
8239 * Wait for all of the tests to complete.
8240 */
8241 for (t = 0; t < ztest_opts.zo_threads; t++)
8242 VERIFY0(thread_join(run_threads[t]));
8243
8244 /*
8245 * Close all datasets. This must be done after all the threads
8246 * are joined so we can be sure none of the datasets are in-use
8247 * by any of the threads.
8248 */
8249 for (t = 0; t < ztest_opts.zo_threads; t++) {
8250 if (t < ztest_opts.zo_datasets)
8251 ztest_dataset_close(t);
8252 }
8253
8254 txg_wait_synced(spa_get_dsl(spa), 0);
8255
8256 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
8257 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
8258
8259 umem_free(run_threads, ztest_opts.zo_threads * sizeof (kthread_t *));
8260 }
8261
8262 /*
8263 * Setup our test context and kick off threads to run tests on all datasets
8264 * in parallel.
8265 */
8266 static void
ztest_run(ztest_shared_t * zs)8267 ztest_run(ztest_shared_t *zs)
8268 {
8269 spa_t *spa;
8270 objset_t *os;
8271 kthread_t *resume_thread, *deadman_thread;
8272 uint64_t object;
8273 int error;
8274 int t, d;
8275
8276 ztest_exiting = B_FALSE;
8277
8278 /*
8279 * Initialize parent/child shared state.
8280 */
8281 mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
8282 mutex_init(&ztest_checkpoint_lock, NULL, MUTEX_DEFAULT, NULL);
8283 VERIFY0(pthread_rwlock_init(&ztest_name_lock, NULL));
8284
8285 zs->zs_thread_start = gethrtime();
8286 zs->zs_thread_stop =
8287 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC;
8288 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop);
8289 zs->zs_thread_kill = zs->zs_thread_stop;
8290 if (ztest_random(100) < ztest_opts.zo_killrate) {
8291 zs->zs_thread_kill -=
8292 ztest_random(ztest_opts.zo_passtime * NANOSEC);
8293 }
8294
8295 mutex_init(&zcl.zcl_callbacks_lock, NULL, MUTEX_DEFAULT, NULL);
8296
8297 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
8298 offsetof(ztest_cb_data_t, zcd_node));
8299
8300 /*
8301 * Open our pool. It may need to be imported first depending on
8302 * what tests were running when the previous pass was terminated.
8303 */
8304 raidz_scratch_verify();
8305 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
8306 error = spa_open(ztest_opts.zo_pool, &spa, FTAG);
8307 if (error) {
8308 VERIFY3S(error, ==, ENOENT);
8309 ztest_import_impl();
8310 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
8311 zs->zs_metaslab_sz =
8312 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
8313 }
8314
8315 metaslab_preload_limit = ztest_random(20) + 1;
8316 ztest_spa = spa;
8317
8318 /*
8319 * XXX - BUGBUG raidz expansion do not run this for generic for now
8320 */
8321 if (ztest_opts.zo_raidz_expand_test != RAIDZ_EXPAND_NONE)
8322 VERIFY0(vdev_raidz_impl_set("cycle"));
8323
8324 dmu_objset_stats_t dds;
8325 VERIFY0(ztest_dmu_objset_own(ztest_opts.zo_pool,
8326 DMU_OST_ANY, B_TRUE, B_TRUE, FTAG, &os));
8327 dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
8328 dmu_objset_fast_stat(os, &dds);
8329 dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
8330 dmu_objset_disown(os, B_TRUE, FTAG);
8331
8332 /* Give the dedicated raidz expansion test more grace time */
8333 if (ztest_opts.zo_raidz_expand_test != RAIDZ_EXPAND_NONE)
8334 zfs_deadman_synctime_ms *= 2;
8335
8336 /*
8337 * Create a thread to periodically resume suspended I/O.
8338 */
8339 resume_thread = thread_create(NULL, 0, ztest_resume_thread,
8340 spa, 0, NULL, TS_RUN | TS_JOINABLE, defclsyspri);
8341
8342 /*
8343 * Create a deadman thread and set to panic if we hang.
8344 */
8345 deadman_thread = thread_create(NULL, 0, ztest_deadman_thread,
8346 zs, 0, NULL, TS_RUN | TS_JOINABLE, defclsyspri);
8347
8348 spa->spa_deadman_failmode = ZIO_FAILURE_MODE_PANIC;
8349
8350 /*
8351 * Verify that we can safely inquire about any object,
8352 * whether it's allocated or not. To make it interesting,
8353 * we probe a 5-wide window around each power of two.
8354 * This hits all edge cases, including zero and the max.
8355 */
8356 for (t = 0; t < 64; t++) {
8357 for (d = -5; d <= 5; d++) {
8358 error = dmu_object_info(spa->spa_meta_objset,
8359 (1ULL << t) + d, NULL);
8360 ASSERT(error == 0 || error == ENOENT ||
8361 error == EINVAL);
8362 }
8363 }
8364
8365 /*
8366 * If we got any ENOSPC errors on the previous run, destroy something.
8367 */
8368 if (zs->zs_enospc_count != 0) {
8369 /* Not expecting ENOSPC errors during raidz expansion tests */
8370 ASSERT3U(ztest_opts.zo_raidz_expand_test, ==,
8371 RAIDZ_EXPAND_NONE);
8372
8373 int d = ztest_random(ztest_opts.zo_datasets);
8374 ztest_dataset_destroy(d);
8375 }
8376 zs->zs_enospc_count = 0;
8377
8378 /*
8379 * If we were in the middle of ztest_device_removal() and were killed
8380 * we need to ensure the removal and scrub complete before running
8381 * any tests that check ztest_device_removal_active. The removal will
8382 * be restarted automatically when the spa is opened, but we need to
8383 * initiate the scrub manually if it is not already in progress. Note
8384 * that we always run the scrub whenever an indirect vdev exists
8385 * because we have no way of knowing for sure if ztest_device_removal()
8386 * fully completed its scrub before the pool was reimported.
8387 *
8388 * Does not apply for the RAIDZ expansion specific test runs
8389 */
8390 if (ztest_opts.zo_raidz_expand_test == RAIDZ_EXPAND_NONE &&
8391 (spa->spa_removing_phys.sr_state == DSS_SCANNING ||
8392 spa->spa_removing_phys.sr_prev_indirect_vdev != -1)) {
8393 while (spa->spa_removing_phys.sr_state == DSS_SCANNING)
8394 txg_wait_synced(spa_get_dsl(spa), 0);
8395
8396 error = ztest_scrub_impl(spa);
8397 if (error == EBUSY)
8398 error = 0;
8399 ASSERT0(error);
8400 }
8401
8402 if (ztest_opts.zo_verbose >= 4)
8403 (void) printf("starting main threads...\n");
8404
8405 /*
8406 * Replay all logs of all datasets in the pool. This is primarily for
8407 * temporary datasets which wouldn't otherwise get replayed, which
8408 * can trigger failures when attempting to offline a SLOG in
8409 * ztest_fault_inject().
8410 */
8411 (void) dmu_objset_find(ztest_opts.zo_pool, ztest_replay_zil_cb,
8412 NULL, DS_FIND_CHILDREN);
8413
8414 if (ztest_opts.zo_raidz_expand_test == RAIDZ_EXPAND_REQUESTED)
8415 ztest_raidz_expand_run(zs, spa);
8416 else if (ztest_opts.zo_raidz_expand_test == RAIDZ_EXPAND_KILLED)
8417 ztest_raidz_expand_check(spa);
8418 else
8419 ztest_generic_run(zs, spa);
8420
8421 /* Kill the resume and deadman threads */
8422 ztest_exiting = B_TRUE;
8423 VERIFY0(thread_join(resume_thread));
8424 VERIFY0(thread_join(deadman_thread));
8425 ztest_resume(spa);
8426
8427 /*
8428 * Right before closing the pool, kick off a bunch of async I/O;
8429 * spa_close() should wait for it to complete.
8430 */
8431 for (object = 1; object < 50; object++) {
8432 dmu_prefetch(spa->spa_meta_objset, object, 0, 0, 1ULL << 20,
8433 ZIO_PRIORITY_SYNC_READ);
8434 }
8435
8436 /* Verify that at least one commit cb was called in a timely fashion */
8437 if (zc_cb_counter >= ZTEST_COMMIT_CB_MIN_REG)
8438 VERIFY0(zc_min_txg_delay);
8439
8440 spa_close(spa, FTAG);
8441
8442 /*
8443 * Verify that we can loop over all pools.
8444 */
8445 mutex_enter(&spa_namespace_lock);
8446 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa))
8447 if (ztest_opts.zo_verbose > 3)
8448 (void) printf("spa_next: found %s\n", spa_name(spa));
8449 mutex_exit(&spa_namespace_lock);
8450
8451 /*
8452 * Verify that we can export the pool and reimport it under a
8453 * different name.
8454 */
8455 if ((ztest_random(2) == 0) && !ztest_opts.zo_mmp_test) {
8456 char name[ZFS_MAX_DATASET_NAME_LEN];
8457 (void) snprintf(name, sizeof (name), "%s_import",
8458 ztest_opts.zo_pool);
8459 ztest_spa_import_export(ztest_opts.zo_pool, name);
8460 ztest_spa_import_export(name, ztest_opts.zo_pool);
8461 }
8462
8463 kernel_fini();
8464
8465 list_destroy(&zcl.zcl_callbacks);
8466 mutex_destroy(&zcl.zcl_callbacks_lock);
8467 (void) pthread_rwlock_destroy(&ztest_name_lock);
8468 mutex_destroy(&ztest_vdev_lock);
8469 mutex_destroy(&ztest_checkpoint_lock);
8470 }
8471
8472 static void
print_time(hrtime_t t,char * timebuf)8473 print_time(hrtime_t t, char *timebuf)
8474 {
8475 hrtime_t s = t / NANOSEC;
8476 hrtime_t m = s / 60;
8477 hrtime_t h = m / 60;
8478 hrtime_t d = h / 24;
8479
8480 s -= m * 60;
8481 m -= h * 60;
8482 h -= d * 24;
8483
8484 timebuf[0] = '\0';
8485
8486 if (d)
8487 (void) sprintf(timebuf,
8488 "%llud%02lluh%02llum%02llus", d, h, m, s);
8489 else if (h)
8490 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s);
8491 else if (m)
8492 (void) sprintf(timebuf, "%llum%02llus", m, s);
8493 else
8494 (void) sprintf(timebuf, "%llus", s);
8495 }
8496
8497 static nvlist_t *
make_random_props(void)8498 make_random_props(void)
8499 {
8500 nvlist_t *props;
8501
8502 props = fnvlist_alloc();
8503
8504 if (ztest_random(2) == 0)
8505 return (props);
8506
8507 fnvlist_add_uint64(props,
8508 zpool_prop_to_name(ZPOOL_PROP_AUTOREPLACE), 1);
8509
8510 return (props);
8511 }
8512
8513 /*
8514 * Create a storage pool with the given name and initial vdev size.
8515 * Then test spa_freeze() functionality.
8516 */
8517 static void
ztest_init(ztest_shared_t * zs)8518 ztest_init(ztest_shared_t *zs)
8519 {
8520 spa_t *spa;
8521 nvlist_t *nvroot, *props;
8522 int i;
8523
8524 mutex_init(&ztest_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
8525 mutex_init(&ztest_checkpoint_lock, NULL, MUTEX_DEFAULT, NULL);
8526 VERIFY0(pthread_rwlock_init(&ztest_name_lock, NULL));
8527
8528 raidz_scratch_verify();
8529 kernel_init(SPA_MODE_READ | SPA_MODE_WRITE);
8530
8531 /*
8532 * Create the storage pool.
8533 */
8534 (void) spa_destroy(ztest_opts.zo_pool);
8535 ztest_shared->zs_vdev_next_leaf = 0;
8536 zs->zs_splits = 0;
8537 zs->zs_mirrors = ztest_opts.zo_mirrors;
8538 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
8539 NULL, ztest_opts.zo_raid_children, zs->zs_mirrors, 1);
8540 props = make_random_props();
8541
8542 /*
8543 * We don't expect the pool to suspend unless maxfaults == 0,
8544 * in which case ztest_fault_inject() temporarily takes away
8545 * the only valid replica.
8546 */
8547 fnvlist_add_uint64(props,
8548 zpool_prop_to_name(ZPOOL_PROP_FAILUREMODE),
8549 MAXFAULTS(zs) ? ZIO_FAILURE_MODE_PANIC : ZIO_FAILURE_MODE_WAIT);
8550
8551 for (i = 0; i < SPA_FEATURES; i++) {
8552 char *buf;
8553
8554 if (!spa_feature_table[i].fi_zfs_mod_supported)
8555 continue;
8556
8557 /*
8558 * 75% chance of using the log space map feature. We want ztest
8559 * to exercise both the code paths that use the log space map
8560 * feature and the ones that don't.
8561 */
8562 if (i == SPA_FEATURE_LOG_SPACEMAP && ztest_random(4) == 0)
8563 continue;
8564
8565 VERIFY3S(-1, !=, asprintf(&buf, "feature@%s",
8566 spa_feature_table[i].fi_uname));
8567 fnvlist_add_uint64(props, buf, 0);
8568 free(buf);
8569 }
8570
8571 VERIFY0(spa_create(ztest_opts.zo_pool, nvroot, props, NULL, NULL));
8572 fnvlist_free(nvroot);
8573 fnvlist_free(props);
8574
8575 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
8576 zs->zs_metaslab_sz =
8577 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
8578 zs->zs_guid = spa_guid(spa);
8579 spa_close(spa, FTAG);
8580
8581 kernel_fini();
8582
8583 if (!ztest_opts.zo_mmp_test) {
8584 ztest_run_zdb(zs->zs_guid);
8585 ztest_freeze();
8586 ztest_run_zdb(zs->zs_guid);
8587 }
8588
8589 (void) pthread_rwlock_destroy(&ztest_name_lock);
8590 mutex_destroy(&ztest_vdev_lock);
8591 mutex_destroy(&ztest_checkpoint_lock);
8592 }
8593
8594 static void
setup_data_fd(void)8595 setup_data_fd(void)
8596 {
8597 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX";
8598
8599 ztest_fd_data = mkstemp(ztest_name_data);
8600 ASSERT3S(ztest_fd_data, >=, 0);
8601 (void) unlink(ztest_name_data);
8602 }
8603
8604 static int
shared_data_size(ztest_shared_hdr_t * hdr)8605 shared_data_size(ztest_shared_hdr_t *hdr)
8606 {
8607 int size;
8608
8609 size = hdr->zh_hdr_size;
8610 size += hdr->zh_opts_size;
8611 size += hdr->zh_size;
8612 size += hdr->zh_stats_size * hdr->zh_stats_count;
8613 size += hdr->zh_ds_size * hdr->zh_ds_count;
8614 size += hdr->zh_scratch_state_size;
8615
8616 return (size);
8617 }
8618
8619 static void
setup_hdr(void)8620 setup_hdr(void)
8621 {
8622 int size;
8623 ztest_shared_hdr_t *hdr;
8624
8625 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
8626 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
8627 ASSERT3P(hdr, !=, MAP_FAILED);
8628
8629 VERIFY0(ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t)));
8630
8631 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t);
8632 hdr->zh_opts_size = sizeof (ztest_shared_opts_t);
8633 hdr->zh_size = sizeof (ztest_shared_t);
8634 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t);
8635 hdr->zh_stats_count = ZTEST_FUNCS;
8636 hdr->zh_ds_size = sizeof (ztest_shared_ds_t);
8637 hdr->zh_ds_count = ztest_opts.zo_datasets;
8638 hdr->zh_scratch_state_size = sizeof (ztest_shared_scratch_state_t);
8639
8640 size = shared_data_size(hdr);
8641 VERIFY0(ftruncate(ztest_fd_data, size));
8642
8643 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
8644 }
8645
8646 static void
setup_data(void)8647 setup_data(void)
8648 {
8649 int size, offset;
8650 ztest_shared_hdr_t *hdr;
8651 uint8_t *buf;
8652
8653 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
8654 PROT_READ, MAP_SHARED, ztest_fd_data, 0);
8655 ASSERT3P(hdr, !=, MAP_FAILED);
8656
8657 size = shared_data_size(hdr);
8658
8659 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
8660 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()),
8661 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
8662 ASSERT3P(hdr, !=, MAP_FAILED);
8663 buf = (uint8_t *)hdr;
8664
8665 offset = hdr->zh_hdr_size;
8666 ztest_shared_opts = (void *)&buf[offset];
8667 offset += hdr->zh_opts_size;
8668 ztest_shared = (void *)&buf[offset];
8669 offset += hdr->zh_size;
8670 ztest_shared_callstate = (void *)&buf[offset];
8671 offset += hdr->zh_stats_size * hdr->zh_stats_count;
8672 ztest_shared_ds = (void *)&buf[offset];
8673 offset += hdr->zh_ds_size * hdr->zh_ds_count;
8674 ztest_scratch_state = (void *)&buf[offset];
8675 }
8676
8677 static boolean_t
exec_child(char * cmd,char * libpath,boolean_t ignorekill,int * statusp)8678 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp)
8679 {
8680 pid_t pid;
8681 int status;
8682 char *cmdbuf = NULL;
8683
8684 pid = fork();
8685
8686 if (cmd == NULL) {
8687 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
8688 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN);
8689 cmd = cmdbuf;
8690 }
8691
8692 if (pid == -1)
8693 fatal(B_TRUE, "fork failed");
8694
8695 if (pid == 0) { /* child */
8696 char fd_data_str[12];
8697
8698 VERIFY3S(11, >=,
8699 snprintf(fd_data_str, 12, "%d", ztest_fd_data));
8700 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
8701
8702 if (libpath != NULL) {
8703 const char *curlp = getenv("LD_LIBRARY_PATH");
8704 if (curlp == NULL)
8705 VERIFY0(setenv("LD_LIBRARY_PATH", libpath, 1));
8706 else {
8707 char *newlp = NULL;
8708 VERIFY3S(-1, !=,
8709 asprintf(&newlp, "%s:%s", libpath, curlp));
8710 VERIFY0(setenv("LD_LIBRARY_PATH", newlp, 1));
8711 free(newlp);
8712 }
8713 }
8714 (void) execl(cmd, cmd, (char *)NULL);
8715 ztest_dump_core = B_FALSE;
8716 fatal(B_TRUE, "exec failed: %s", cmd);
8717 }
8718
8719 if (cmdbuf != NULL) {
8720 umem_free(cmdbuf, MAXPATHLEN);
8721 cmd = NULL;
8722 }
8723
8724 while (waitpid(pid, &status, 0) != pid)
8725 continue;
8726 if (statusp != NULL)
8727 *statusp = status;
8728
8729 if (WIFEXITED(status)) {
8730 if (WEXITSTATUS(status) != 0) {
8731 (void) fprintf(stderr, "child exited with code %d\n",
8732 WEXITSTATUS(status));
8733 exit(2);
8734 }
8735 return (B_FALSE);
8736 } else if (WIFSIGNALED(status)) {
8737 if (!ignorekill || WTERMSIG(status) != SIGKILL) {
8738 (void) fprintf(stderr, "child died with signal %d\n",
8739 WTERMSIG(status));
8740 exit(3);
8741 }
8742 return (B_TRUE);
8743 } else {
8744 (void) fprintf(stderr, "something strange happened to child\n");
8745 exit(4);
8746 }
8747 }
8748
8749 static void
ztest_run_init(void)8750 ztest_run_init(void)
8751 {
8752 int i;
8753
8754 ztest_shared_t *zs = ztest_shared;
8755
8756 /*
8757 * Blow away any existing copy of zpool.cache
8758 */
8759 (void) remove(spa_config_path);
8760
8761 if (ztest_opts.zo_init == 0) {
8762 if (ztest_opts.zo_verbose >= 1)
8763 (void) printf("Importing pool %s\n",
8764 ztest_opts.zo_pool);
8765 ztest_import(zs);
8766 return;
8767 }
8768
8769 /*
8770 * Create and initialize our storage pool.
8771 */
8772 for (i = 1; i <= ztest_opts.zo_init; i++) {
8773 memset(zs, 0, sizeof (*zs));
8774 if (ztest_opts.zo_verbose >= 3 &&
8775 ztest_opts.zo_init != 1) {
8776 (void) printf("ztest_init(), pass %d\n", i);
8777 }
8778 ztest_init(zs);
8779 }
8780 }
8781
8782 int
main(int argc,char ** argv)8783 main(int argc, char **argv)
8784 {
8785 int kills = 0;
8786 int iters = 0;
8787 int older = 0;
8788 int newer = 0;
8789 ztest_shared_t *zs;
8790 ztest_info_t *zi;
8791 ztest_shared_callstate_t *zc;
8792 char timebuf[100];
8793 char numbuf[NN_NUMBUF_SZ];
8794 char *cmd;
8795 boolean_t hasalt;
8796 int f, err;
8797 char *fd_data_str = getenv("ZTEST_FD_DATA");
8798 struct sigaction action;
8799
8800 (void) setvbuf(stdout, NULL, _IOLBF, 0);
8801
8802 dprintf_setup(&argc, argv);
8803 zfs_deadman_synctime_ms = 300000;
8804 zfs_deadman_checktime_ms = 30000;
8805 /*
8806 * As two-word space map entries may not come up often (especially
8807 * if pool and vdev sizes are small) we want to force at least some
8808 * of them so the feature get tested.
8809 */
8810 zfs_force_some_double_word_sm_entries = B_TRUE;
8811
8812 /*
8813 * Verify that even extensively damaged split blocks with many
8814 * segments can be reconstructed in a reasonable amount of time
8815 * when reconstruction is known to be possible.
8816 *
8817 * Note: the lower this value is, the more damage we inflict, and
8818 * the more time ztest spends in recovering that damage. We chose
8819 * to induce damage 1/100th of the time so recovery is tested but
8820 * not so frequently that ztest doesn't get to test other code paths.
8821 */
8822 zfs_reconstruct_indirect_damage_fraction = 100;
8823
8824 action.sa_handler = sig_handler;
8825 sigemptyset(&action.sa_mask);
8826 action.sa_flags = 0;
8827
8828 if (sigaction(SIGSEGV, &action, NULL) < 0) {
8829 (void) fprintf(stderr, "ztest: cannot catch SIGSEGV: %s.\n",
8830 strerror(errno));
8831 exit(EXIT_FAILURE);
8832 }
8833
8834 if (sigaction(SIGABRT, &action, NULL) < 0) {
8835 (void) fprintf(stderr, "ztest: cannot catch SIGABRT: %s.\n",
8836 strerror(errno));
8837 exit(EXIT_FAILURE);
8838 }
8839
8840 /*
8841 * Force random_get_bytes() to use /dev/urandom in order to prevent
8842 * ztest from needlessly depleting the system entropy pool.
8843 */
8844 random_path = "/dev/urandom";
8845 ztest_fd_rand = open(random_path, O_RDONLY | O_CLOEXEC);
8846 ASSERT3S(ztest_fd_rand, >=, 0);
8847
8848 if (!fd_data_str) {
8849 process_options(argc, argv);
8850
8851 setup_data_fd();
8852 setup_hdr();
8853 setup_data();
8854 memcpy(ztest_shared_opts, &ztest_opts,
8855 sizeof (*ztest_shared_opts));
8856 } else {
8857 ztest_fd_data = atoi(fd_data_str);
8858 setup_data();
8859 memcpy(&ztest_opts, ztest_shared_opts, sizeof (ztest_opts));
8860 }
8861 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count);
8862
8863 err = ztest_set_global_vars();
8864 if (err != 0 && !fd_data_str) {
8865 /* error message done by ztest_set_global_vars */
8866 exit(EXIT_FAILURE);
8867 } else {
8868 /* children should not be spawned if setting gvars fails */
8869 VERIFY3S(err, ==, 0);
8870 }
8871
8872 /* Override location of zpool.cache */
8873 VERIFY3S(asprintf((char **)&spa_config_path, "%s/zpool.cache",
8874 ztest_opts.zo_dir), !=, -1);
8875
8876 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t),
8877 UMEM_NOFAIL);
8878 zs = ztest_shared;
8879
8880 if (fd_data_str) {
8881 metaslab_force_ganging = ztest_opts.zo_metaslab_force_ganging;
8882 metaslab_df_alloc_threshold =
8883 zs->zs_metaslab_df_alloc_threshold;
8884
8885 if (zs->zs_do_init)
8886 ztest_run_init();
8887 else
8888 ztest_run(zs);
8889 exit(0);
8890 }
8891
8892 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0);
8893
8894 if (ztest_opts.zo_verbose >= 1) {
8895 (void) printf("%"PRIu64" vdevs, %d datasets, %d threads, "
8896 "%d %s disks, parity %d, %"PRIu64" seconds...\n\n",
8897 ztest_opts.zo_vdevs,
8898 ztest_opts.zo_datasets,
8899 ztest_opts.zo_threads,
8900 ztest_opts.zo_raid_children,
8901 ztest_opts.zo_raid_type,
8902 ztest_opts.zo_raid_parity,
8903 ztest_opts.zo_time);
8904 }
8905
8906 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL);
8907 (void) strlcpy(cmd, getexecname(), MAXNAMELEN);
8908
8909 zs->zs_do_init = B_TRUE;
8910 if (strlen(ztest_opts.zo_alt_ztest) != 0) {
8911 if (ztest_opts.zo_verbose >= 1) {
8912 (void) printf("Executing older ztest for "
8913 "initialization: %s\n", ztest_opts.zo_alt_ztest);
8914 }
8915 VERIFY(!exec_child(ztest_opts.zo_alt_ztest,
8916 ztest_opts.zo_alt_libpath, B_FALSE, NULL));
8917 } else {
8918 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL));
8919 }
8920 zs->zs_do_init = B_FALSE;
8921
8922 zs->zs_proc_start = gethrtime();
8923 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC;
8924
8925 for (f = 0; f < ZTEST_FUNCS; f++) {
8926 zi = &ztest_info[f];
8927 zc = ZTEST_GET_SHARED_CALLSTATE(f);
8928 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop)
8929 zc->zc_next = UINT64_MAX;
8930 else
8931 zc->zc_next = zs->zs_proc_start +
8932 ztest_random(2 * zi->zi_interval[0] + 1);
8933 }
8934
8935 /*
8936 * Run the tests in a loop. These tests include fault injection
8937 * to verify that self-healing data works, and forced crashes
8938 * to verify that we never lose on-disk consistency.
8939 */
8940 while (gethrtime() < zs->zs_proc_stop) {
8941 int status;
8942 boolean_t killed;
8943
8944 /*
8945 * Initialize the workload counters for each function.
8946 */
8947 for (f = 0; f < ZTEST_FUNCS; f++) {
8948 zc = ZTEST_GET_SHARED_CALLSTATE(f);
8949 zc->zc_count = 0;
8950 zc->zc_time = 0;
8951 }
8952
8953 /* Set the allocation switch size */
8954 zs->zs_metaslab_df_alloc_threshold =
8955 ztest_random(zs->zs_metaslab_sz / 4) + 1;
8956
8957 if (!hasalt || ztest_random(2) == 0) {
8958 if (hasalt && ztest_opts.zo_verbose >= 1) {
8959 (void) printf("Executing newer ztest: %s\n",
8960 cmd);
8961 }
8962 newer++;
8963 killed = exec_child(cmd, NULL, B_TRUE, &status);
8964 } else {
8965 if (hasalt && ztest_opts.zo_verbose >= 1) {
8966 (void) printf("Executing older ztest: %s\n",
8967 ztest_opts.zo_alt_ztest);
8968 }
8969 older++;
8970 killed = exec_child(ztest_opts.zo_alt_ztest,
8971 ztest_opts.zo_alt_libpath, B_TRUE, &status);
8972 }
8973
8974 if (killed)
8975 kills++;
8976 iters++;
8977
8978 if (ztest_opts.zo_verbose >= 1) {
8979 hrtime_t now = gethrtime();
8980
8981 now = MIN(now, zs->zs_proc_stop);
8982 print_time(zs->zs_proc_stop - now, timebuf);
8983 nicenum(zs->zs_space, numbuf, sizeof (numbuf));
8984
8985 (void) printf("Pass %3d, %8s, %3"PRIu64" ENOSPC, "
8986 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n",
8987 iters,
8988 WIFEXITED(status) ? "Complete" : "SIGKILL",
8989 zs->zs_enospc_count,
8990 100.0 * zs->zs_alloc / zs->zs_space,
8991 numbuf,
8992 100.0 * (now - zs->zs_proc_start) /
8993 (ztest_opts.zo_time * NANOSEC), timebuf);
8994 }
8995
8996 if (ztest_opts.zo_verbose >= 2) {
8997 (void) printf("\nWorkload summary:\n\n");
8998 (void) printf("%7s %9s %s\n",
8999 "Calls", "Time", "Function");
9000 (void) printf("%7s %9s %s\n",
9001 "-----", "----", "--------");
9002 for (f = 0; f < ZTEST_FUNCS; f++) {
9003 zi = &ztest_info[f];
9004 zc = ZTEST_GET_SHARED_CALLSTATE(f);
9005 print_time(zc->zc_time, timebuf);
9006 (void) printf("%7"PRIu64" %9s %s\n",
9007 zc->zc_count, timebuf,
9008 zi->zi_funcname);
9009 }
9010 (void) printf("\n");
9011 }
9012
9013 if (!ztest_opts.zo_mmp_test)
9014 ztest_run_zdb(zs->zs_guid);
9015 if (ztest_shared_opts->zo_raidz_expand_test ==
9016 RAIDZ_EXPAND_CHECKED)
9017 break; /* raidz expand test complete */
9018 }
9019
9020 if (ztest_opts.zo_verbose >= 1) {
9021 if (hasalt) {
9022 (void) printf("%d runs of older ztest: %s\n", older,
9023 ztest_opts.zo_alt_ztest);
9024 (void) printf("%d runs of newer ztest: %s\n", newer,
9025 cmd);
9026 }
9027 (void) printf("%d killed, %d completed, %.0f%% kill rate\n",
9028 kills, iters - kills, (100.0 * kills) / MAX(1, iters));
9029 }
9030
9031 umem_free(cmd, MAXNAMELEN);
9032
9033 return (0);
9034 }
9035