1fc1de960SAlexander Motin /*- 23728855aSPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 33728855aSPedro F. Giffuni * 4fc1de960SAlexander Motin * Copyright (c) 2012 Alexander Motin <mav@FreeBSD.org> 5fc1de960SAlexander Motin * All rights reserved. 6fc1de960SAlexander Motin * 7fc1de960SAlexander Motin * Redistribution and use in source and binary forms, with or without 8fc1de960SAlexander Motin * modification, are permitted provided that the following conditions 9fc1de960SAlexander Motin * are met: 10fc1de960SAlexander Motin * 1. Redistributions of source code must retain the above copyright 11fc1de960SAlexander Motin * notice, this list of conditions and the following disclaimer. 12fc1de960SAlexander Motin * 2. Redistributions in binary form must reproduce the above copyright 13fc1de960SAlexander Motin * notice, this list of conditions and the following disclaimer in the 14fc1de960SAlexander Motin * documentation and/or other materials provided with the distribution. 15fc1de960SAlexander Motin * 16fc1de960SAlexander Motin * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17fc1de960SAlexander Motin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18fc1de960SAlexander Motin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19fc1de960SAlexander Motin * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20fc1de960SAlexander Motin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21fc1de960SAlexander Motin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22fc1de960SAlexander Motin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23fc1de960SAlexander Motin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24fc1de960SAlexander Motin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25fc1de960SAlexander Motin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26fc1de960SAlexander Motin * SUCH DAMAGE. 27fc1de960SAlexander Motin */ 28fc1de960SAlexander Motin 29fc1de960SAlexander Motin #include <sys/cdefs.h> 30fc1de960SAlexander Motin __FBSDID("$FreeBSD$"); 31fc1de960SAlexander Motin 32fc1de960SAlexander Motin #include <sys/param.h> 33fc1de960SAlexander Motin #include <sys/bio.h> 34fc1de960SAlexander Motin #include <sys/endian.h> 35fc1de960SAlexander Motin #include <sys/kernel.h> 36fc1de960SAlexander Motin #include <sys/kobj.h> 37fc1de960SAlexander Motin #include <sys/limits.h> 38fc1de960SAlexander Motin #include <sys/lock.h> 39fc1de960SAlexander Motin #include <sys/malloc.h> 40fc1de960SAlexander Motin #include <sys/mutex.h> 41fc1de960SAlexander Motin #include <sys/sysctl.h> 42fc1de960SAlexander Motin #include <sys/systm.h> 43fc1de960SAlexander Motin #include <geom/geom.h> 44fc1de960SAlexander Motin #include "geom/raid/g_raid.h" 45fc1de960SAlexander Motin #include "g_raid_tr_if.h" 46fc1de960SAlexander Motin 47fc1de960SAlexander Motin static MALLOC_DEFINE(M_TR_RAID5, "tr_raid5_data", "GEOM_RAID RAID5 data"); 48fc1de960SAlexander Motin 49fc1de960SAlexander Motin #define TR_RAID5_NONE 0 50fc1de960SAlexander Motin #define TR_RAID5_REBUILD 1 51fc1de960SAlexander Motin #define TR_RAID5_RESYNC 2 52fc1de960SAlexander Motin 53fc1de960SAlexander Motin #define TR_RAID5_F_DOING_SOME 0x1 54fc1de960SAlexander Motin #define TR_RAID5_F_LOCKED 0x2 55fc1de960SAlexander Motin #define TR_RAID5_F_ABORT 0x4 56fc1de960SAlexander Motin 57fc1de960SAlexander Motin struct g_raid_tr_raid5_object { 58fc1de960SAlexander Motin struct g_raid_tr_object trso_base; 59fc1de960SAlexander Motin int trso_starting; 60fc1de960SAlexander Motin int trso_stopping; 61fc1de960SAlexander Motin int trso_type; 62fc1de960SAlexander Motin int trso_recover_slabs; /* slabs before rest */ 63fc1de960SAlexander Motin int trso_fair_io; 64fc1de960SAlexander Motin int trso_meta_update; 65fc1de960SAlexander Motin int trso_flags; 66fc1de960SAlexander Motin struct g_raid_subdisk *trso_failed_sd; /* like per volume */ 67fc1de960SAlexander Motin void *trso_buffer; /* Buffer space */ 68fc1de960SAlexander Motin struct bio trso_bio; 69fc1de960SAlexander Motin }; 70fc1de960SAlexander Motin 71fc1de960SAlexander Motin static g_raid_tr_taste_t g_raid_tr_taste_raid5; 72fc1de960SAlexander Motin static g_raid_tr_event_t g_raid_tr_event_raid5; 73fc1de960SAlexander Motin static g_raid_tr_start_t g_raid_tr_start_raid5; 74fc1de960SAlexander Motin static g_raid_tr_stop_t g_raid_tr_stop_raid5; 75fc1de960SAlexander Motin static g_raid_tr_iostart_t g_raid_tr_iostart_raid5; 76fc1de960SAlexander Motin static g_raid_tr_iodone_t g_raid_tr_iodone_raid5; 77fc1de960SAlexander Motin static g_raid_tr_kerneldump_t g_raid_tr_kerneldump_raid5; 78fc1de960SAlexander Motin static g_raid_tr_locked_t g_raid_tr_locked_raid5; 79fc1de960SAlexander Motin static g_raid_tr_free_t g_raid_tr_free_raid5; 80fc1de960SAlexander Motin 81fc1de960SAlexander Motin static kobj_method_t g_raid_tr_raid5_methods[] = { 82fc1de960SAlexander Motin KOBJMETHOD(g_raid_tr_taste, g_raid_tr_taste_raid5), 83fc1de960SAlexander Motin KOBJMETHOD(g_raid_tr_event, g_raid_tr_event_raid5), 84fc1de960SAlexander Motin KOBJMETHOD(g_raid_tr_start, g_raid_tr_start_raid5), 85fc1de960SAlexander Motin KOBJMETHOD(g_raid_tr_stop, g_raid_tr_stop_raid5), 86fc1de960SAlexander Motin KOBJMETHOD(g_raid_tr_iostart, g_raid_tr_iostart_raid5), 87fc1de960SAlexander Motin KOBJMETHOD(g_raid_tr_iodone, g_raid_tr_iodone_raid5), 88fc1de960SAlexander Motin KOBJMETHOD(g_raid_tr_kerneldump, g_raid_tr_kerneldump_raid5), 89fc1de960SAlexander Motin KOBJMETHOD(g_raid_tr_locked, g_raid_tr_locked_raid5), 90fc1de960SAlexander Motin KOBJMETHOD(g_raid_tr_free, g_raid_tr_free_raid5), 91fc1de960SAlexander Motin { 0, 0 } 92fc1de960SAlexander Motin }; 93fc1de960SAlexander Motin 94fc1de960SAlexander Motin static struct g_raid_tr_class g_raid_tr_raid5_class = { 95fc1de960SAlexander Motin "RAID5", 96fc1de960SAlexander Motin g_raid_tr_raid5_methods, 97fc1de960SAlexander Motin sizeof(struct g_raid_tr_raid5_object), 98c89d2fbeSAlexander Motin .trc_enable = 1, 99fc1de960SAlexander Motin .trc_priority = 100 100fc1de960SAlexander Motin }; 101fc1de960SAlexander Motin 102fc1de960SAlexander Motin static int 103fc1de960SAlexander Motin g_raid_tr_taste_raid5(struct g_raid_tr_object *tr, struct g_raid_volume *vol) 104fc1de960SAlexander Motin { 105fc1de960SAlexander Motin struct g_raid_tr_raid5_object *trs; 106fc1de960SAlexander Motin u_int qual; 107fc1de960SAlexander Motin 108fc1de960SAlexander Motin trs = (struct g_raid_tr_raid5_object *)tr; 109fc1de960SAlexander Motin qual = tr->tro_volume->v_raid_level_qualifier; 1104b97ff61SAlexander Motin if (tr->tro_volume->v_raid_level == G_RAID_VOLUME_RL_RAID4 && 111e70b565bSAlexander Motin (qual == G_RAID_VOLUME_RLQ_R4P0 || 112db8645f0SAlexander Motin qual == G_RAID_VOLUME_RLQ_R4PN)) { 1134b97ff61SAlexander Motin /* RAID4 */ 1144b97ff61SAlexander Motin } else if ((tr->tro_volume->v_raid_level == G_RAID_VOLUME_RL_RAID5 || 1154b97ff61SAlexander Motin tr->tro_volume->v_raid_level == G_RAID_VOLUME_RL_RAID5E || 1164b97ff61SAlexander Motin tr->tro_volume->v_raid_level == G_RAID_VOLUME_RL_RAID5EE || 1178f12ca2eSAlexander Motin tr->tro_volume->v_raid_level == G_RAID_VOLUME_RL_RAID5R || 1184b97ff61SAlexander Motin tr->tro_volume->v_raid_level == G_RAID_VOLUME_RL_RAID6 || 1194b97ff61SAlexander Motin tr->tro_volume->v_raid_level == G_RAID_VOLUME_RL_RAIDMDF) && 120e70b565bSAlexander Motin (qual == G_RAID_VOLUME_RLQ_R5RA || 121e70b565bSAlexander Motin qual == G_RAID_VOLUME_RLQ_R5RS || 122e70b565bSAlexander Motin qual == G_RAID_VOLUME_RLQ_R5LA || 123e70b565bSAlexander Motin qual == G_RAID_VOLUME_RLQ_R5LS)) { 1248f12ca2eSAlexander Motin /* RAID5/5E/5EE/5R/6/MDF */ 125fc1de960SAlexander Motin } else 126fc1de960SAlexander Motin return (G_RAID_TR_TASTE_FAIL); 127fc1de960SAlexander Motin trs->trso_starting = 1; 128fc1de960SAlexander Motin return (G_RAID_TR_TASTE_SUCCEED); 129fc1de960SAlexander Motin } 130fc1de960SAlexander Motin 131fc1de960SAlexander Motin static int 132fc1de960SAlexander Motin g_raid_tr_update_state_raid5(struct g_raid_volume *vol, 133fc1de960SAlexander Motin struct g_raid_subdisk *sd) 134fc1de960SAlexander Motin { 135fc1de960SAlexander Motin struct g_raid_tr_raid5_object *trs; 136fc1de960SAlexander Motin struct g_raid_softc *sc; 137fc1de960SAlexander Motin u_int s; 138fc1de960SAlexander Motin int na, ns, nu; 139fc1de960SAlexander Motin 140fc1de960SAlexander Motin sc = vol->v_softc; 141fc1de960SAlexander Motin trs = (struct g_raid_tr_raid5_object *)vol->v_tr; 142fc1de960SAlexander Motin if (trs->trso_stopping && 143fc1de960SAlexander Motin (trs->trso_flags & TR_RAID5_F_DOING_SOME) == 0) 144fc1de960SAlexander Motin s = G_RAID_VOLUME_S_STOPPED; 145fc1de960SAlexander Motin else if (trs->trso_starting) 146fc1de960SAlexander Motin s = G_RAID_VOLUME_S_STARTING; 147fc1de960SAlexander Motin else { 148fc1de960SAlexander Motin na = g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_ACTIVE); 149fc1de960SAlexander Motin ns = g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_STALE) + 150fc1de960SAlexander Motin g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_RESYNC); 151fc1de960SAlexander Motin nu = g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_UNINITIALIZED); 152fc1de960SAlexander Motin if (na == vol->v_disks_count) 153fc1de960SAlexander Motin s = G_RAID_VOLUME_S_OPTIMAL; 154fc1de960SAlexander Motin else if (na + ns == vol->v_disks_count || 155fc1de960SAlexander Motin na + ns + nu == vol->v_disks_count /* XXX: Temporary. */) 156fc1de960SAlexander Motin s = G_RAID_VOLUME_S_SUBOPTIMAL; 157fc1de960SAlexander Motin else if (na == vol->v_disks_count - 1 || 158fc1de960SAlexander Motin na + ns + nu == vol->v_disks_count) 159fc1de960SAlexander Motin s = G_RAID_VOLUME_S_DEGRADED; 160fc1de960SAlexander Motin else 161fc1de960SAlexander Motin s = G_RAID_VOLUME_S_BROKEN; 162fc1de960SAlexander Motin } 163fc1de960SAlexander Motin if (s != vol->v_state) { 164fc1de960SAlexander Motin g_raid_event_send(vol, G_RAID_VOLUME_S_ALIVE(s) ? 165fc1de960SAlexander Motin G_RAID_VOLUME_E_UP : G_RAID_VOLUME_E_DOWN, 166fc1de960SAlexander Motin G_RAID_EVENT_VOLUME); 167fc1de960SAlexander Motin g_raid_change_volume_state(vol, s); 168fc1de960SAlexander Motin if (!trs->trso_starting && !trs->trso_stopping) 169fc1de960SAlexander Motin g_raid_write_metadata(sc, vol, NULL, NULL); 170fc1de960SAlexander Motin } 171fc1de960SAlexander Motin return (0); 172fc1de960SAlexander Motin } 173fc1de960SAlexander Motin 174fc1de960SAlexander Motin static int 175fc1de960SAlexander Motin g_raid_tr_event_raid5(struct g_raid_tr_object *tr, 176fc1de960SAlexander Motin struct g_raid_subdisk *sd, u_int event) 177fc1de960SAlexander Motin { 178fc1de960SAlexander Motin 179fc1de960SAlexander Motin g_raid_tr_update_state_raid5(tr->tro_volume, sd); 180fc1de960SAlexander Motin return (0); 181fc1de960SAlexander Motin } 182fc1de960SAlexander Motin 183fc1de960SAlexander Motin static int 184fc1de960SAlexander Motin g_raid_tr_start_raid5(struct g_raid_tr_object *tr) 185fc1de960SAlexander Motin { 186fc1de960SAlexander Motin struct g_raid_tr_raid5_object *trs; 187fc1de960SAlexander Motin struct g_raid_volume *vol; 188fc1de960SAlexander Motin 189fc1de960SAlexander Motin trs = (struct g_raid_tr_raid5_object *)tr; 190fc1de960SAlexander Motin trs->trso_starting = 0; 1910f0b2fd8SAlexander Motin vol = tr->tro_volume; 1920f0b2fd8SAlexander Motin vol->v_read_only = 1; 193fc1de960SAlexander Motin g_raid_tr_update_state_raid5(vol, NULL); 194fc1de960SAlexander Motin return (0); 195fc1de960SAlexander Motin } 196fc1de960SAlexander Motin 197fc1de960SAlexander Motin static int 198fc1de960SAlexander Motin g_raid_tr_stop_raid5(struct g_raid_tr_object *tr) 199fc1de960SAlexander Motin { 200fc1de960SAlexander Motin struct g_raid_tr_raid5_object *trs; 201fc1de960SAlexander Motin struct g_raid_volume *vol; 202fc1de960SAlexander Motin 203fc1de960SAlexander Motin trs = (struct g_raid_tr_raid5_object *)tr; 204fc1de960SAlexander Motin vol = tr->tro_volume; 205fc1de960SAlexander Motin trs->trso_starting = 0; 206fc1de960SAlexander Motin trs->trso_stopping = 1; 207fc1de960SAlexander Motin g_raid_tr_update_state_raid5(vol, NULL); 208fc1de960SAlexander Motin return (0); 209fc1de960SAlexander Motin } 210fc1de960SAlexander Motin 211fc1de960SAlexander Motin static void 212fc1de960SAlexander Motin g_raid_tr_iostart_raid5_read(struct g_raid_tr_object *tr, struct bio *bp) 213fc1de960SAlexander Motin { 214fc1de960SAlexander Motin struct g_raid_volume *vol; 215fc1de960SAlexander Motin struct g_raid_subdisk *sd; 216fc1de960SAlexander Motin struct bio_queue_head queue; 217fc1de960SAlexander Motin struct bio *cbp; 218fc1de960SAlexander Motin char *addr; 219fc1de960SAlexander Motin off_t offset, start, length, nstripe, remain; 2208f12ca2eSAlexander Motin int no, pno, ddisks, pdisks, protate, pleft; 2214b97ff61SAlexander Motin u_int strip_size, lvl, qual; 222fc1de960SAlexander Motin 223fc1de960SAlexander Motin vol = tr->tro_volume; 224fc1de960SAlexander Motin addr = bp->bio_data; 225fc1de960SAlexander Motin strip_size = vol->v_strip_size; 2264b97ff61SAlexander Motin lvl = tr->tro_volume->v_raid_level; 227fc1de960SAlexander Motin qual = tr->tro_volume->v_raid_level_qualifier; 2288f12ca2eSAlexander Motin protate = tr->tro_volume->v_rotate_parity; 229fc1de960SAlexander Motin 230fc1de960SAlexander Motin /* Stripe number. */ 231fc1de960SAlexander Motin nstripe = bp->bio_offset / strip_size; 232fc1de960SAlexander Motin /* Start position in stripe. */ 233fc1de960SAlexander Motin start = bp->bio_offset % strip_size; 2344b97ff61SAlexander Motin /* Number of data and parity disks. */ 2354b97ff61SAlexander Motin if (lvl == G_RAID_VOLUME_RL_RAIDMDF) 2368f12ca2eSAlexander Motin pdisks = tr->tro_volume->v_mdf_pdisks; 2374b97ff61SAlexander Motin else if (lvl == G_RAID_VOLUME_RL_RAID5EE || 2384b97ff61SAlexander Motin lvl == G_RAID_VOLUME_RL_RAID6) 2394b97ff61SAlexander Motin pdisks = 2; 2404b97ff61SAlexander Motin else 2414b97ff61SAlexander Motin pdisks = 1; 2424b97ff61SAlexander Motin ddisks = vol->v_disks_count - pdisks; 243fc1de960SAlexander Motin /* Parity disk number. */ 2444b97ff61SAlexander Motin if (lvl == G_RAID_VOLUME_RL_RAID4) { 2454b97ff61SAlexander Motin if (qual == 0) /* P0 */ 2464b97ff61SAlexander Motin pno = 0; 2474b97ff61SAlexander Motin else /* PN */ 2484b97ff61SAlexander Motin pno = ddisks; 2498f12ca2eSAlexander Motin pleft = -1; 2504b97ff61SAlexander Motin } else { 2518f12ca2eSAlexander Motin pno = (nstripe / (ddisks * protate)) % vol->v_disks_count; 2528f12ca2eSAlexander Motin pleft = protate - (nstripe / ddisks) % protate; 2534b97ff61SAlexander Motin if (qual >= 2) { /* PN/Left */ 2544b97ff61SAlexander Motin pno = ddisks - pno; 2554b97ff61SAlexander Motin if (pno < 0) 2564b97ff61SAlexander Motin pno += vol->v_disks_count; 2574b97ff61SAlexander Motin } 2584b97ff61SAlexander Motin } 2594b97ff61SAlexander Motin /* Data disk number. */ 2604b97ff61SAlexander Motin no = nstripe % ddisks; 2614b97ff61SAlexander Motin if (lvl == G_RAID_VOLUME_RL_RAID4) { 2624b97ff61SAlexander Motin if (qual == 0) 2634b97ff61SAlexander Motin no += pdisks; 2644b97ff61SAlexander Motin } else if (qual & 1) { /* Continuation/Symmetric */ 2654b97ff61SAlexander Motin no = (pno + pdisks + no) % vol->v_disks_count; 2664b97ff61SAlexander Motin } else if (no >= pno) /* Restart/Asymmetric */ 2674b97ff61SAlexander Motin no += pdisks; 2684b97ff61SAlexander Motin else 2694b97ff61SAlexander Motin no += imax(0, pno + pdisks - vol->v_disks_count); 270fc1de960SAlexander Motin /* Stripe start position in disk. */ 2714b97ff61SAlexander Motin offset = (nstripe / ddisks) * strip_size; 272fc1de960SAlexander Motin /* Length of data to operate. */ 273fc1de960SAlexander Motin remain = bp->bio_length; 274fc1de960SAlexander Motin 275fc1de960SAlexander Motin bioq_init(&queue); 276fc1de960SAlexander Motin do { 277fc1de960SAlexander Motin length = MIN(strip_size - start, remain); 278fc1de960SAlexander Motin cbp = g_clone_bio(bp); 279fc1de960SAlexander Motin if (cbp == NULL) 280fc1de960SAlexander Motin goto failure; 281fc1de960SAlexander Motin cbp->bio_offset = offset + start; 282fc1de960SAlexander Motin cbp->bio_data = addr; 283fc1de960SAlexander Motin cbp->bio_length = length; 284fc1de960SAlexander Motin cbp->bio_caller1 = &vol->v_subdisks[no]; 285fc1de960SAlexander Motin bioq_insert_tail(&queue, cbp); 286fc1de960SAlexander Motin no++; 2874b97ff61SAlexander Motin if (lvl == G_RAID_VOLUME_RL_RAID4) { 2884b97ff61SAlexander Motin no %= vol->v_disks_count; 2894b97ff61SAlexander Motin if (no == pno) 2904b97ff61SAlexander Motin no = (no + pdisks) % vol->v_disks_count; 2914b97ff61SAlexander Motin } else if (qual & 1) { /* Continuation/Symmetric */ 292fc1de960SAlexander Motin no %= vol->v_disks_count; 293fc1de960SAlexander Motin if (no == pno) { 2948f12ca2eSAlexander Motin if ((--pleft) <= 0) { 2958f12ca2eSAlexander Motin pleft += protate; 2964b97ff61SAlexander Motin if (qual < 2) /* P0/Right */ 2974b97ff61SAlexander Motin pno++; 2984b97ff61SAlexander Motin else /* PN/Left */ 2994b97ff61SAlexander Motin pno += vol->v_disks_count - 1; 3004b97ff61SAlexander Motin pno %= vol->v_disks_count; 3018f12ca2eSAlexander Motin } 3024b97ff61SAlexander Motin no = (pno + pdisks) % vol->v_disks_count; 303fc1de960SAlexander Motin offset += strip_size; 304fc1de960SAlexander Motin } 3054b97ff61SAlexander Motin } else { /* Restart/Asymmetric */ 306fc1de960SAlexander Motin if (no == pno) 3074b97ff61SAlexander Motin no += pdisks; 308fc1de960SAlexander Motin if (no >= vol->v_disks_count) { 3094b97ff61SAlexander Motin no -= vol->v_disks_count; 3108f12ca2eSAlexander Motin if ((--pleft) <= 0) { 3118f12ca2eSAlexander Motin pleft += protate; 3124b97ff61SAlexander Motin if (qual < 2) /* P0/Right */ 3134b97ff61SAlexander Motin pno++; 3144b97ff61SAlexander Motin else /* PN/Left */ 3154b97ff61SAlexander Motin pno += vol->v_disks_count - 1; 3164b97ff61SAlexander Motin pno %= vol->v_disks_count; 3178f12ca2eSAlexander Motin } 3184b97ff61SAlexander Motin if (no == pno) 3194b97ff61SAlexander Motin no += pdisks; 320fc1de960SAlexander Motin else 3214b97ff61SAlexander Motin no += imax(0, pno + pdisks - vol->v_disks_count); 322fc1de960SAlexander Motin offset += strip_size; 323fc1de960SAlexander Motin } 324fc1de960SAlexander Motin } 325fc1de960SAlexander Motin remain -= length; 326fc1de960SAlexander Motin addr += length; 327fc1de960SAlexander Motin start = 0; 328fc1de960SAlexander Motin } while (remain > 0); 329b43560abSAlexander Motin while ((cbp = bioq_takefirst(&queue)) != NULL) { 330fc1de960SAlexander Motin sd = cbp->bio_caller1; 331fc1de960SAlexander Motin cbp->bio_caller1 = NULL; 332fc1de960SAlexander Motin g_raid_subdisk_iostart(sd, cbp); 333fc1de960SAlexander Motin } 334fc1de960SAlexander Motin return; 335fc1de960SAlexander Motin failure: 336b43560abSAlexander Motin while ((cbp = bioq_takefirst(&queue)) != NULL) 337fc1de960SAlexander Motin g_destroy_bio(cbp); 338fc1de960SAlexander Motin if (bp->bio_error == 0) 339fc1de960SAlexander Motin bp->bio_error = ENOMEM; 340fc1de960SAlexander Motin g_raid_iodone(bp, bp->bio_error); 341fc1de960SAlexander Motin } 342fc1de960SAlexander Motin 343fc1de960SAlexander Motin static void 344fc1de960SAlexander Motin g_raid_tr_iostart_raid5(struct g_raid_tr_object *tr, struct bio *bp) 345fc1de960SAlexander Motin { 346fc1de960SAlexander Motin struct g_raid_volume *vol; 347fc1de960SAlexander Motin struct g_raid_tr_raid5_object *trs; 348fc1de960SAlexander Motin 349fc1de960SAlexander Motin vol = tr->tro_volume; 350fc1de960SAlexander Motin trs = (struct g_raid_tr_raid5_object *)tr; 351fc1de960SAlexander Motin if (vol->v_state < G_RAID_VOLUME_S_SUBOPTIMAL) { 352fc1de960SAlexander Motin g_raid_iodone(bp, EIO); 353fc1de960SAlexander Motin return; 354fc1de960SAlexander Motin } 355fc1de960SAlexander Motin switch (bp->bio_cmd) { 356fc1de960SAlexander Motin case BIO_READ: 357fc1de960SAlexander Motin g_raid_tr_iostart_raid5_read(tr, bp); 358fc1de960SAlexander Motin break; 359fc1de960SAlexander Motin case BIO_WRITE: 360fc1de960SAlexander Motin case BIO_DELETE: 361fc1de960SAlexander Motin case BIO_FLUSH: 362fc1de960SAlexander Motin g_raid_iodone(bp, ENODEV); 363fc1de960SAlexander Motin break; 364fc1de960SAlexander Motin default: 365fc1de960SAlexander Motin KASSERT(1 == 0, ("Invalid command here: %u (volume=%s)", 366fc1de960SAlexander Motin bp->bio_cmd, vol->v_name)); 367fc1de960SAlexander Motin break; 368fc1de960SAlexander Motin } 369fc1de960SAlexander Motin } 370fc1de960SAlexander Motin 371fc1de960SAlexander Motin static void 372fc1de960SAlexander Motin g_raid_tr_iodone_raid5(struct g_raid_tr_object *tr, 373fc1de960SAlexander Motin struct g_raid_subdisk *sd, struct bio *bp) 374fc1de960SAlexander Motin { 375fc1de960SAlexander Motin struct bio *pbp; 376fc1de960SAlexander Motin int error; 377fc1de960SAlexander Motin 378fc1de960SAlexander Motin pbp = bp->bio_parent; 379fc1de960SAlexander Motin pbp->bio_inbed++; 380fc1de960SAlexander Motin error = bp->bio_error; 381fc1de960SAlexander Motin g_destroy_bio(bp); 382fc1de960SAlexander Motin if (pbp->bio_children == pbp->bio_inbed) { 383fc1de960SAlexander Motin pbp->bio_completed = pbp->bio_length; 384fc1de960SAlexander Motin g_raid_iodone(pbp, error); 385fc1de960SAlexander Motin } 386fc1de960SAlexander Motin } 387fc1de960SAlexander Motin 388fc1de960SAlexander Motin static int 389fc1de960SAlexander Motin g_raid_tr_kerneldump_raid5(struct g_raid_tr_object *tr, 390fc1de960SAlexander Motin void *virtual, vm_offset_t physical, off_t offset, size_t length) 391fc1de960SAlexander Motin { 392fc1de960SAlexander Motin 393fc1de960SAlexander Motin return (ENODEV); 394fc1de960SAlexander Motin } 395fc1de960SAlexander Motin 396fc1de960SAlexander Motin static int 397fc1de960SAlexander Motin g_raid_tr_locked_raid5(struct g_raid_tr_object *tr, void *argp) 398fc1de960SAlexander Motin { 399fc1de960SAlexander Motin struct bio *bp; 400fc1de960SAlexander Motin struct g_raid_subdisk *sd; 401fc1de960SAlexander Motin 402fc1de960SAlexander Motin bp = (struct bio *)argp; 403fc1de960SAlexander Motin sd = (struct g_raid_subdisk *)bp->bio_caller1; 404fc1de960SAlexander Motin g_raid_subdisk_iostart(sd, bp); 405fc1de960SAlexander Motin 406fc1de960SAlexander Motin return (0); 407fc1de960SAlexander Motin } 408fc1de960SAlexander Motin 409fc1de960SAlexander Motin static int 410fc1de960SAlexander Motin g_raid_tr_free_raid5(struct g_raid_tr_object *tr) 411fc1de960SAlexander Motin { 412fc1de960SAlexander Motin struct g_raid_tr_raid5_object *trs; 413fc1de960SAlexander Motin 414fc1de960SAlexander Motin trs = (struct g_raid_tr_raid5_object *)tr; 415fc1de960SAlexander Motin 416fc1de960SAlexander Motin if (trs->trso_buffer != NULL) { 417fc1de960SAlexander Motin free(trs->trso_buffer, M_TR_RAID5); 418fc1de960SAlexander Motin trs->trso_buffer = NULL; 419fc1de960SAlexander Motin } 420fc1de960SAlexander Motin return (0); 421fc1de960SAlexander Motin } 422fc1de960SAlexander Motin 423c89d2fbeSAlexander Motin G_RAID_TR_DECLARE(raid5, "RAID5"); 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