Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/spa.c @ 4543:12bb2876a62e
PSARC/2006/465 ZFS Delegated Administration
PSARC/2006/577 zpool property to disable delegation
PSARC/2006/625 Enhancements to zpool history
PSARC/2007/228 ZFS delegation amendments
PSARC/2007/295 ZFS Delegated Administration Addendum
6280676 restore "owner" property
6349470 investigate non-root restore/backup
6572465 'zpool set bootfs=...' records history as 'zfs set bootfs=...'
| author | marks |
|---|---|
| date | Tue, 26 Jun 2007 07:44:24 -0700 |
| parents | 5d5b6ba91b17 |
| children | ed36b0e652bc |
| rev | line source |
|---|---|
| 789 | 1 /* |
| 2 * CDDL HEADER START | |
| 3 * | |
| 4 * The contents of this file are subject to the terms of the | |
| 1544 | 5 * Common Development and Distribution License (the "License"). |
| 6 * You may not use this file except in compliance with the License. | |
| 789 | 7 * |
| 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 9 * or http://www.opensolaris.org/os/licensing. | |
| 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 */ | |
| 2082 | 21 |
| 789 | 22 /* |
|
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23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. |
| 789 | 24 * Use is subject to license terms. |
| 25 */ | |
| 26 | |
| 27 #pragma ident "%Z%%M% %I% %E% SMI" | |
| 28 | |
| 29 /* | |
| 30 * This file contains all the routines used when modifying on-disk SPA state. | |
| 31 * This includes opening, importing, destroying, exporting a pool, and syncing a | |
| 32 * pool. | |
| 33 */ | |
| 34 | |
| 35 #include <sys/zfs_context.h> | |
| 1544 | 36 #include <sys/fm/fs/zfs.h> |
| 789 | 37 #include <sys/spa_impl.h> |
| 38 #include <sys/zio.h> | |
| 39 #include <sys/zio_checksum.h> | |
| 40 #include <sys/zio_compress.h> | |
| 41 #include <sys/dmu.h> | |
| 42 #include <sys/dmu_tx.h> | |
| 43 #include <sys/zap.h> | |
| 44 #include <sys/zil.h> | |
| 45 #include <sys/vdev_impl.h> | |
| 46 #include <sys/metaslab.h> | |
| 47 #include <sys/uberblock_impl.h> | |
| 48 #include <sys/txg.h> | |
| 49 #include <sys/avl.h> | |
| 50 #include <sys/dmu_traverse.h> | |
| 3912 | 51 #include <sys/dmu_objset.h> |
| 789 | 52 #include <sys/unique.h> |
| 53 #include <sys/dsl_pool.h> | |
| 3912 | 54 #include <sys/dsl_dataset.h> |
| 789 | 55 #include <sys/dsl_dir.h> |
| 56 #include <sys/dsl_prop.h> | |
| 3912 | 57 #include <sys/dsl_synctask.h> |
| 789 | 58 #include <sys/fs/zfs.h> |
| 59 #include <sys/callb.h> | |
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60 #include <sys/systeminfo.h> |
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61 #include <sys/sunddi.h> |
| 789 | 62 |
| 2986 | 63 int zio_taskq_threads = 8; |
| 64 | |
| 789 | 65 /* |
| 66 * ========================================================================== | |
| 67 * SPA state manipulation (open/create/destroy/import/export) | |
| 68 * ========================================================================== | |
| 69 */ | |
| 70 | |
| 1544 | 71 static int |
| 72 spa_error_entry_compare(const void *a, const void *b) | |
| 73 { | |
| 74 spa_error_entry_t *sa = (spa_error_entry_t *)a; | |
| 75 spa_error_entry_t *sb = (spa_error_entry_t *)b; | |
| 76 int ret; | |
| 77 | |
| 78 ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, | |
| 79 sizeof (zbookmark_t)); | |
| 80 | |
| 81 if (ret < 0) | |
| 82 return (-1); | |
| 83 else if (ret > 0) | |
| 84 return (1); | |
| 85 else | |
| 86 return (0); | |
| 87 } | |
| 88 | |
| 89 /* | |
| 90 * Utility function which retrieves copies of the current logs and | |
| 91 * re-initializes them in the process. | |
| 92 */ | |
| 93 void | |
| 94 spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
| 95 { | |
| 96 ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
| 97 | |
| 98 bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
| 99 bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
| 100 | |
| 101 avl_create(&spa->spa_errlist_scrub, | |
| 102 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 103 offsetof(spa_error_entry_t, se_avl)); | |
| 104 avl_create(&spa->spa_errlist_last, | |
| 105 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 106 offsetof(spa_error_entry_t, se_avl)); | |
| 107 } | |
| 108 | |
| 789 | 109 /* |
| 110 * Activate an uninitialized pool. | |
| 111 */ | |
| 112 static void | |
| 113 spa_activate(spa_t *spa) | |
| 114 { | |
| 115 int t; | |
| 116 | |
| 117 ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
| 118 | |
| 119 spa->spa_state = POOL_STATE_ACTIVE; | |
| 120 | |
| 121 spa->spa_normal_class = metaslab_class_create(); | |
| 4527 | 122 spa->spa_log_class = metaslab_class_create(); |
| 789 | 123 |
| 124 for (t = 0; t < ZIO_TYPES; t++) { | |
| 125 spa->spa_zio_issue_taskq[t] = taskq_create("spa_zio_issue", | |
| 2986 | 126 zio_taskq_threads, maxclsyspri, 50, INT_MAX, |
| 789 | 127 TASKQ_PREPOPULATE); |
| 128 spa->spa_zio_intr_taskq[t] = taskq_create("spa_zio_intr", | |
| 2986 | 129 zio_taskq_threads, maxclsyspri, 50, INT_MAX, |
| 789 | 130 TASKQ_PREPOPULATE); |
| 131 } | |
| 132 | |
| 133 rw_init(&spa->spa_traverse_lock, NULL, RW_DEFAULT, NULL); | |
| 134 | |
| 2856 | 135 mutex_init(&spa->spa_async_lock, NULL, MUTEX_DEFAULT, NULL); |
| 136 mutex_init(&spa->spa_config_cache_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 137 mutex_init(&spa->spa_scrub_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 138 mutex_init(&spa->spa_errlog_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 139 mutex_init(&spa->spa_errlist_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 140 mutex_init(&spa->spa_config_lock.scl_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 141 mutex_init(&spa->spa_sync_bplist.bpl_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 2926 | 142 mutex_init(&spa->spa_history_lock, NULL, MUTEX_DEFAULT, NULL); |
| 3912 | 143 mutex_init(&spa->spa_props_lock, NULL, MUTEX_DEFAULT, NULL); |
| 2856 | 144 |
| 789 | 145 list_create(&spa->spa_dirty_list, sizeof (vdev_t), |
| 146 offsetof(vdev_t, vdev_dirty_node)); | |
| 147 | |
| 148 txg_list_create(&spa->spa_vdev_txg_list, | |
| 149 offsetof(struct vdev, vdev_txg_node)); | |
| 1544 | 150 |
| 151 avl_create(&spa->spa_errlist_scrub, | |
| 152 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 153 offsetof(spa_error_entry_t, se_avl)); | |
| 154 avl_create(&spa->spa_errlist_last, | |
| 155 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 156 offsetof(spa_error_entry_t, se_avl)); | |
| 789 | 157 } |
| 158 | |
| 159 /* | |
| 160 * Opposite of spa_activate(). | |
| 161 */ | |
| 162 static void | |
| 163 spa_deactivate(spa_t *spa) | |
| 164 { | |
| 165 int t; | |
| 166 | |
| 167 ASSERT(spa->spa_sync_on == B_FALSE); | |
| 168 ASSERT(spa->spa_dsl_pool == NULL); | |
| 169 ASSERT(spa->spa_root_vdev == NULL); | |
| 170 | |
| 171 ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); | |
| 172 | |
| 173 txg_list_destroy(&spa->spa_vdev_txg_list); | |
| 174 | |
| 175 list_destroy(&spa->spa_dirty_list); | |
| 176 | |
| 177 rw_destroy(&spa->spa_traverse_lock); | |
| 178 | |
| 179 for (t = 0; t < ZIO_TYPES; t++) { | |
| 180 taskq_destroy(spa->spa_zio_issue_taskq[t]); | |
| 181 taskq_destroy(spa->spa_zio_intr_taskq[t]); | |
| 182 spa->spa_zio_issue_taskq[t] = NULL; | |
| 183 spa->spa_zio_intr_taskq[t] = NULL; | |
| 184 } | |
| 185 | |
| 186 metaslab_class_destroy(spa->spa_normal_class); | |
| 187 spa->spa_normal_class = NULL; | |
| 188 | |
| 4527 | 189 metaslab_class_destroy(spa->spa_log_class); |
| 190 spa->spa_log_class = NULL; | |
| 191 | |
| 1544 | 192 /* |
| 193 * If this was part of an import or the open otherwise failed, we may | |
| 194 * still have errors left in the queues. Empty them just in case. | |
| 195 */ | |
| 196 spa_errlog_drain(spa); | |
| 197 | |
| 198 avl_destroy(&spa->spa_errlist_scrub); | |
| 199 avl_destroy(&spa->spa_errlist_last); | |
| 200 | |
| 789 | 201 spa->spa_state = POOL_STATE_UNINITIALIZED; |
| 202 } | |
| 203 | |
| 204 /* | |
| 205 * Verify a pool configuration, and construct the vdev tree appropriately. This | |
| 206 * will create all the necessary vdevs in the appropriate layout, with each vdev | |
| 207 * in the CLOSED state. This will prep the pool before open/creation/import. | |
| 208 * All vdev validation is done by the vdev_alloc() routine. | |
| 209 */ | |
| 2082 | 210 static int |
| 211 spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
| 212 uint_t id, int atype) | |
| 789 | 213 { |
| 214 nvlist_t **child; | |
| 215 uint_t c, children; | |
| 2082 | 216 int error; |
| 217 | |
| 218 if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
| 219 return (error); | |
| 220 | |
| 221 if ((*vdp)->vdev_ops->vdev_op_leaf) | |
| 222 return (0); | |
| 789 | 223 |
| 224 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, | |
| 225 &child, &children) != 0) { | |
| 2082 | 226 vdev_free(*vdp); |
| 227 *vdp = NULL; | |
| 228 return (EINVAL); | |
| 789 | 229 } |
| 230 | |
| 231 for (c = 0; c < children; c++) { | |
| 2082 | 232 vdev_t *vd; |
| 233 if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
| 234 atype)) != 0) { | |
| 235 vdev_free(*vdp); | |
| 236 *vdp = NULL; | |
| 237 return (error); | |
| 789 | 238 } |
| 239 } | |
| 240 | |
| 2082 | 241 ASSERT(*vdp != NULL); |
| 242 | |
| 243 return (0); | |
| 789 | 244 } |
| 245 | |
| 246 /* | |
| 247 * Opposite of spa_load(). | |
| 248 */ | |
| 249 static void | |
| 250 spa_unload(spa_t *spa) | |
| 251 { | |
| 2082 | 252 int i; |
| 253 | |
| 789 | 254 /* |
| 1544 | 255 * Stop async tasks. |
| 256 */ | |
| 257 spa_async_suspend(spa); | |
| 258 | |
| 259 /* | |
| 789 | 260 * Stop syncing. |
| 261 */ | |
| 262 if (spa->spa_sync_on) { | |
| 263 txg_sync_stop(spa->spa_dsl_pool); | |
| 264 spa->spa_sync_on = B_FALSE; | |
| 265 } | |
| 266 | |
| 267 /* | |
| 268 * Wait for any outstanding prefetch I/O to complete. | |
| 269 */ | |
| 1544 | 270 spa_config_enter(spa, RW_WRITER, FTAG); |
| 271 spa_config_exit(spa, FTAG); | |
| 789 | 272 |
| 273 /* | |
| 274 * Close the dsl pool. | |
| 275 */ | |
| 276 if (spa->spa_dsl_pool) { | |
| 277 dsl_pool_close(spa->spa_dsl_pool); | |
| 278 spa->spa_dsl_pool = NULL; | |
| 279 } | |
| 280 | |
| 281 /* | |
| 282 * Close all vdevs. | |
| 283 */ | |
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284 if (spa->spa_root_vdev) |
| 789 | 285 vdev_free(spa->spa_root_vdev); |
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286 ASSERT(spa->spa_root_vdev == NULL); |
| 1544 | 287 |
| 2082 | 288 for (i = 0; i < spa->spa_nspares; i++) |
| 289 vdev_free(spa->spa_spares[i]); | |
| 290 if (spa->spa_spares) { | |
| 291 kmem_free(spa->spa_spares, spa->spa_nspares * sizeof (void *)); | |
| 292 spa->spa_spares = NULL; | |
| 293 } | |
| 294 if (spa->spa_sparelist) { | |
| 295 nvlist_free(spa->spa_sparelist); | |
| 296 spa->spa_sparelist = NULL; | |
| 297 } | |
| 298 | |
| 1544 | 299 spa->spa_async_suspended = 0; |
| 789 | 300 } |
| 301 | |
| 302 /* | |
| 2082 | 303 * Load (or re-load) the current list of vdevs describing the active spares for |
| 304 * this pool. When this is called, we have some form of basic information in | |
| 305 * 'spa_sparelist'. We parse this into vdevs, try to open them, and then | |
| 306 * re-generate a more complete list including status information. | |
| 307 */ | |
| 308 static void | |
| 309 spa_load_spares(spa_t *spa) | |
| 310 { | |
| 311 nvlist_t **spares; | |
| 312 uint_t nspares; | |
| 313 int i; | |
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314 vdev_t *vd, *tvd; |
| 2082 | 315 |
| 316 /* | |
| 317 * First, close and free any existing spare vdevs. | |
| 318 */ | |
| 319 for (i = 0; i < spa->spa_nspares; i++) { | |
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320 vd = spa->spa_spares[i]; |
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321 |
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322 /* Undo the call to spa_activate() below */ |
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323 if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL && |
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324 tvd->vdev_isspare) |
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325 spa_spare_remove(tvd); |
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326 vdev_close(vd); |
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327 vdev_free(vd); |
| 2082 | 328 } |
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329 |
| 2082 | 330 if (spa->spa_spares) |
| 331 kmem_free(spa->spa_spares, spa->spa_nspares * sizeof (void *)); | |
| 332 | |
| 333 if (spa->spa_sparelist == NULL) | |
| 334 nspares = 0; | |
| 335 else | |
| 336 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 337 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 338 | |
| 339 spa->spa_nspares = (int)nspares; | |
| 340 spa->spa_spares = NULL; | |
| 341 | |
| 342 if (nspares == 0) | |
| 343 return; | |
| 344 | |
| 345 /* | |
| 346 * Construct the array of vdevs, opening them to get status in the | |
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347 * process. For each spare, there is potentially two different vdev_t |
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348 * structures associated with it: one in the list of spares (used only |
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349 * for basic validation purposes) and one in the active vdev |
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350 * configuration (if it's spared in). During this phase we open and |
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351 * validate each vdev on the spare list. If the vdev also exists in the |
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352 * active configuration, then we also mark this vdev as an active spare. |
| 2082 | 353 */ |
| 354 spa->spa_spares = kmem_alloc(nspares * sizeof (void *), KM_SLEEP); | |
| 355 for (i = 0; i < spa->spa_nspares; i++) { | |
| 356 VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
| 357 VDEV_ALLOC_SPARE) == 0); | |
| 358 ASSERT(vd != NULL); | |
| 359 | |
| 360 spa->spa_spares[i] = vd; | |
| 361 | |
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362 if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL) { |
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363 if (!tvd->vdev_isspare) |
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364 spa_spare_add(tvd); |
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365 |
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366 /* |
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367 * We only mark the spare active if we were successfully |
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368 * able to load the vdev. Otherwise, importing a pool |
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369 * with a bad active spare would result in strange |
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370 * behavior, because multiple pool would think the spare |
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371 * is actively in use. |
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372 * |
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373 * There is a vulnerability here to an equally bizarre |
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374 * circumstance, where a dead active spare is later |
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375 * brought back to life (onlined or otherwise). Given |
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376 * the rarity of this scenario, and the extra complexity |
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377 * it adds, we ignore the possibility. |
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|
378 */ |
|
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|
379 if (!vdev_is_dead(tvd)) |
|
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|
380 spa_spare_activate(tvd); |
|
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|
381 } |
|
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|
382 |
| 2082 | 383 if (vdev_open(vd) != 0) |
| 384 continue; | |
| 385 | |
| 386 vd->vdev_top = vd; | |
| 387 (void) vdev_validate_spare(vd); | |
| 388 } | |
| 389 | |
| 390 /* | |
| 391 * Recompute the stashed list of spares, with status information | |
| 392 * this time. | |
| 393 */ | |
| 394 VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 395 DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 396 | |
| 397 spares = kmem_alloc(spa->spa_nspares * sizeof (void *), KM_SLEEP); | |
| 398 for (i = 0; i < spa->spa_nspares; i++) | |
| 399 spares[i] = vdev_config_generate(spa, spa->spa_spares[i], | |
| 400 B_TRUE, B_TRUE); | |
| 401 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 402 spares, spa->spa_nspares) == 0); | |
| 403 for (i = 0; i < spa->spa_nspares; i++) | |
| 404 nvlist_free(spares[i]); | |
| 405 kmem_free(spares, spa->spa_nspares * sizeof (void *)); | |
| 406 } | |
| 407 | |
| 408 static int | |
| 409 load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
| 410 { | |
| 411 dmu_buf_t *db; | |
| 412 char *packed = NULL; | |
| 413 size_t nvsize = 0; | |
| 414 int error; | |
| 415 *value = NULL; | |
| 416 | |
| 417 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
| 418 nvsize = *(uint64_t *)db->db_data; | |
| 419 dmu_buf_rele(db, FTAG); | |
| 420 | |
| 421 packed = kmem_alloc(nvsize, KM_SLEEP); | |
| 422 error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed); | |
| 423 if (error == 0) | |
| 424 error = nvlist_unpack(packed, nvsize, value, 0); | |
| 425 kmem_free(packed, nvsize); | |
| 426 | |
| 427 return (error); | |
| 428 } | |
| 429 | |
| 430 /* | |
| 4451 | 431 * Checks to see if the given vdev could not be opened, in which case we post a |
| 432 * sysevent to notify the autoreplace code that the device has been removed. | |
| 433 */ | |
| 434 static void | |
| 435 spa_check_removed(vdev_t *vd) | |
| 436 { | |
| 437 int c; | |
| 438 | |
| 439 for (c = 0; c < vd->vdev_children; c++) | |
| 440 spa_check_removed(vd->vdev_child[c]); | |
| 441 | |
| 442 if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd)) { | |
| 443 zfs_post_autoreplace(vd->vdev_spa, vd); | |
| 444 spa_event_notify(vd->vdev_spa, vd, ESC_ZFS_VDEV_CHECK); | |
| 445 } | |
| 446 } | |
| 447 | |
| 448 /* | |
| 789 | 449 * Load an existing storage pool, using the pool's builtin spa_config as a |
| 1544 | 450 * source of configuration information. |
| 789 | 451 */ |
| 452 static int | |
| 1544 | 453 spa_load(spa_t *spa, nvlist_t *config, spa_load_state_t state, int mosconfig) |
| 789 | 454 { |
| 455 int error = 0; | |
| 456 nvlist_t *nvroot = NULL; | |
| 457 vdev_t *rvd; | |
| 458 uberblock_t *ub = &spa->spa_uberblock; | |
|
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459 uint64_t config_cache_txg = spa->spa_config_txg; |
| 789 | 460 uint64_t pool_guid; |
| 2082 | 461 uint64_t version; |
| 789 | 462 zio_t *zio; |
| 4451 | 463 uint64_t autoreplace = 0; |
| 789 | 464 |
| 1544 | 465 spa->spa_load_state = state; |
|
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466 |
| 789 | 467 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot) || |
| 1733 | 468 nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) { |
| 1544 | 469 error = EINVAL; |
| 470 goto out; | |
| 471 } | |
| 789 | 472 |
| 2082 | 473 /* |
| 474 * Versioning wasn't explicitly added to the label until later, so if | |
| 475 * it's not present treat it as the initial version. | |
| 476 */ | |
| 477 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &version) != 0) | |
| 478 version = ZFS_VERSION_INITIAL; | |
| 479 | |
| 1733 | 480 (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, |
| 481 &spa->spa_config_txg); | |
| 482 | |
|
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483 if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && |
| 1544 | 484 spa_guid_exists(pool_guid, 0)) { |
| 485 error = EEXIST; | |
| 486 goto out; | |
| 487 } | |
| 789 | 488 |
|
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489 spa->spa_load_guid = pool_guid; |
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490 |
| 789 | 491 /* |
| 2082 | 492 * Parse the configuration into a vdev tree. We explicitly set the |
| 493 * value that will be returned by spa_version() since parsing the | |
| 494 * configuration requires knowing the version number. | |
| 789 | 495 */ |
| 1544 | 496 spa_config_enter(spa, RW_WRITER, FTAG); |
| 2082 | 497 spa->spa_ubsync.ub_version = version; |
| 498 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_LOAD); | |
| 1544 | 499 spa_config_exit(spa, FTAG); |
| 789 | 500 |
| 2082 | 501 if (error != 0) |
| 1544 | 502 goto out; |
| 789 | 503 |
|
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504 ASSERT(spa->spa_root_vdev == rvd); |
| 789 | 505 ASSERT(spa_guid(spa) == pool_guid); |
| 506 | |
| 507 /* | |
| 508 * Try to open all vdevs, loading each label in the process. | |
| 509 */ | |
|
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510 error = vdev_open(rvd); |
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511 if (error != 0) |
| 1544 | 512 goto out; |
| 789 | 513 |
| 514 /* | |
|
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515 * Validate the labels for all leaf vdevs. We need to grab the config |
|
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516 * lock because all label I/O is done with the ZIO_FLAG_CONFIG_HELD |
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517 * flag. |
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|
518 */ |
|
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519 spa_config_enter(spa, RW_READER, FTAG); |
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520 error = vdev_validate(rvd); |
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521 spa_config_exit(spa, FTAG); |
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522 |
|
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523 if (error != 0) |
|
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524 goto out; |
|
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|
525 |
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526 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
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527 error = ENXIO; |
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528 goto out; |
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|
529 } |
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530 |
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|
531 /* |
| 789 | 532 * Find the best uberblock. |
| 533 */ | |
| 534 bzero(ub, sizeof (uberblock_t)); | |
| 535 | |
| 536 zio = zio_root(spa, NULL, NULL, | |
| 537 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
| 538 vdev_uberblock_load(zio, rvd, ub); | |
| 539 error = zio_wait(zio); | |
| 540 | |
| 541 /* | |
| 542 * If we weren't able to find a single valid uberblock, return failure. | |
| 543 */ | |
| 544 if (ub->ub_txg == 0) { | |
| 1760 | 545 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 546 VDEV_AUX_CORRUPT_DATA); | |
| 1544 | 547 error = ENXIO; |
| 548 goto out; | |
| 549 } | |
| 550 | |
| 551 /* | |
| 552 * If the pool is newer than the code, we can't open it. | |
| 553 */ | |
| 1760 | 554 if (ub->ub_version > ZFS_VERSION) { |
| 555 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 556 VDEV_AUX_VERSION_NEWER); | |
| 1544 | 557 error = ENOTSUP; |
| 558 goto out; | |
| 789 | 559 } |
| 560 | |
| 561 /* | |
| 562 * If the vdev guid sum doesn't match the uberblock, we have an | |
| 563 * incomplete configuration. | |
| 564 */ | |
| 1732 | 565 if (rvd->vdev_guid_sum != ub->ub_guid_sum && mosconfig) { |
| 1544 | 566 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 567 VDEV_AUX_BAD_GUID_SUM); | |
| 568 error = ENXIO; | |
| 569 goto out; | |
| 789 | 570 } |
| 571 | |
| 572 /* | |
| 573 * Initialize internal SPA structures. | |
| 574 */ | |
| 575 spa->spa_state = POOL_STATE_ACTIVE; | |
| 576 spa->spa_ubsync = spa->spa_uberblock; | |
| 577 spa->spa_first_txg = spa_last_synced_txg(spa) + 1; | |
| 1544 | 578 error = dsl_pool_open(spa, spa->spa_first_txg, &spa->spa_dsl_pool); |
| 579 if (error) { | |
| 580 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 581 VDEV_AUX_CORRUPT_DATA); | |
| 582 goto out; | |
| 583 } | |
| 789 | 584 spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; |
| 585 | |
| 1544 | 586 if (zap_lookup(spa->spa_meta_objset, |
| 789 | 587 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
| 1544 | 588 sizeof (uint64_t), 1, &spa->spa_config_object) != 0) { |
| 589 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 590 VDEV_AUX_CORRUPT_DATA); | |
| 591 error = EIO; | |
| 592 goto out; | |
| 593 } | |
| 789 | 594 |
| 595 if (!mosconfig) { | |
| 2082 | 596 nvlist_t *newconfig; |
|
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|
597 uint64_t hostid; |
| 2082 | 598 |
| 599 if (load_nvlist(spa, spa->spa_config_object, &newconfig) != 0) { | |
| 1544 | 600 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 601 VDEV_AUX_CORRUPT_DATA); | |
| 602 error = EIO; | |
| 603 goto out; | |
| 604 } | |
| 789 | 605 |
|
3975
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6282725 hostname/hostid should be stored in the label
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|
606 if (nvlist_lookup_uint64(newconfig, ZPOOL_CONFIG_HOSTID, |
|
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
607 &hostid) == 0) { |
|
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|
608 char *hostname; |
|
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6282725 hostname/hostid should be stored in the label
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|
609 unsigned long myhostid = 0; |
|
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|
610 |
|
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|
611 VERIFY(nvlist_lookup_string(newconfig, |
|
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|
612 ZPOOL_CONFIG_HOSTNAME, &hostname) == 0); |
|
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|
613 |
|
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|
614 (void) ddi_strtoul(hw_serial, NULL, 10, &myhostid); |
|
4178
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6553537 zfs root fails to boot from a snv_63+zfsboot-pfinstall netinstall image
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615 if (hostid != 0 && myhostid != 0 && |
|
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|
616 (unsigned long)hostid != myhostid) { |
|
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|
617 cmn_err(CE_WARN, "pool '%s' could not be " |
|
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6282725 hostname/hostid should be stored in the label
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|
618 "loaded as it was last accessed by " |
|
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|
619 "another system (host: %s hostid: 0x%lx). " |
|
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|
620 "See: http://www.sun.com/msg/ZFS-8000-EY", |
|
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|
621 spa->spa_name, hostname, |
|
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|
622 (unsigned long)hostid); |
|
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|
623 error = EBADF; |
|
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|
624 goto out; |
|
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|
625 } |
|
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|
626 } |
|
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|
627 |
| 789 | 628 spa_config_set(spa, newconfig); |
| 629 spa_unload(spa); | |
| 630 spa_deactivate(spa); | |
| 631 spa_activate(spa); | |
| 632 | |
| 1544 | 633 return (spa_load(spa, newconfig, state, B_TRUE)); |
| 634 } | |
| 635 | |
| 636 if (zap_lookup(spa->spa_meta_objset, | |
| 637 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, | |
| 638 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj) != 0) { | |
| 639 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 640 VDEV_AUX_CORRUPT_DATA); | |
| 641 error = EIO; | |
| 642 goto out; | |
| 789 | 643 } |
| 644 | |
| 1544 | 645 /* |
| 2082 | 646 * Load the bit that tells us to use the new accounting function |
| 647 * (raid-z deflation). If we have an older pool, this will not | |
| 648 * be present. | |
| 649 */ | |
| 650 error = zap_lookup(spa->spa_meta_objset, | |
| 651 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 652 sizeof (uint64_t), 1, &spa->spa_deflate); | |
| 653 if (error != 0 && error != ENOENT) { | |
| 654 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 655 VDEV_AUX_CORRUPT_DATA); | |
| 656 error = EIO; | |
| 657 goto out; | |
| 658 } | |
| 659 | |
| 660 /* | |
| 1544 | 661 * Load the persistent error log. If we have an older pool, this will |
| 662 * not be present. | |
| 663 */ | |
| 664 error = zap_lookup(spa->spa_meta_objset, | |
| 665 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_LAST, | |
| 666 sizeof (uint64_t), 1, &spa->spa_errlog_last); | |
|
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667 if (error != 0 && error != ENOENT) { |
| 1544 | 668 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 669 VDEV_AUX_CORRUPT_DATA); | |
| 670 error = EIO; | |
| 671 goto out; | |
| 672 } | |
| 673 | |
| 674 error = zap_lookup(spa->spa_meta_objset, | |
| 675 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_SCRUB, | |
| 676 sizeof (uint64_t), 1, &spa->spa_errlog_scrub); | |
| 677 if (error != 0 && error != ENOENT) { | |
| 678 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 679 VDEV_AUX_CORRUPT_DATA); | |
| 680 error = EIO; | |
| 681 goto out; | |
| 682 } | |
| 789 | 683 |
| 684 /* | |
| 2926 | 685 * Load the history object. If we have an older pool, this |
| 686 * will not be present. | |
| 687 */ | |
| 688 error = zap_lookup(spa->spa_meta_objset, | |
| 689 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_HISTORY, | |
| 690 sizeof (uint64_t), 1, &spa->spa_history); | |
| 691 if (error != 0 && error != ENOENT) { | |
| 692 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 693 VDEV_AUX_CORRUPT_DATA); | |
| 694 error = EIO; | |
| 695 goto out; | |
| 696 } | |
| 697 | |
| 698 /* | |
| 2082 | 699 * Load any hot spares for this pool. |
| 700 */ | |
| 701 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
| 702 DMU_POOL_SPARES, sizeof (uint64_t), 1, &spa->spa_spares_object); | |
| 703 if (error != 0 && error != ENOENT) { | |
| 704 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 705 VDEV_AUX_CORRUPT_DATA); | |
| 706 error = EIO; | |
| 707 goto out; | |
| 708 } | |
| 709 if (error == 0) { | |
| 710 ASSERT(spa_version(spa) >= ZFS_VERSION_SPARES); | |
| 711 if (load_nvlist(spa, spa->spa_spares_object, | |
| 712 &spa->spa_sparelist) != 0) { | |
| 713 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 714 VDEV_AUX_CORRUPT_DATA); | |
| 715 error = EIO; | |
| 716 goto out; | |
| 717 } | |
| 718 | |
| 719 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 720 spa_load_spares(spa); | |
| 721 spa_config_exit(spa, FTAG); | |
| 722 } | |
| 723 | |
| 4543 | 724 spa->spa_delegation = zfs_prop_default_numeric(ZPOOL_PROP_DELEGATION); |
| 725 | |
| 3912 | 726 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, |
| 727 DMU_POOL_PROPS, sizeof (uint64_t), 1, &spa->spa_pool_props_object); | |
| 728 | |
| 729 if (error && error != ENOENT) { | |
| 730 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 731 VDEV_AUX_CORRUPT_DATA); | |
| 732 error = EIO; | |
| 733 goto out; | |
| 734 } | |
| 735 | |
| 736 if (error == 0) { | |
| 737 (void) zap_lookup(spa->spa_meta_objset, | |
| 738 spa->spa_pool_props_object, | |
| 4451 | 739 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), |
| 3912 | 740 sizeof (uint64_t), 1, &spa->spa_bootfs); |
| 4451 | 741 (void) zap_lookup(spa->spa_meta_objset, |
| 742 spa->spa_pool_props_object, | |
| 743 zpool_prop_to_name(ZPOOL_PROP_AUTOREPLACE), | |
| 744 sizeof (uint64_t), 1, &autoreplace); | |
| 4543 | 745 (void) zap_lookup(spa->spa_meta_objset, |
| 746 spa->spa_pool_props_object, | |
| 747 zpool_prop_to_name(ZPOOL_PROP_DELEGATION), | |
| 748 sizeof (uint64_t), 1, &spa->spa_delegation); | |
| 3912 | 749 } |
| 750 | |
| 2082 | 751 /* |
| 4451 | 752 * If the 'autoreplace' property is set, then post a resource notifying |
| 753 * the ZFS DE that it should not issue any faults for unopenable | |
| 754 * devices. We also iterate over the vdevs, and post a sysevent for any | |
| 755 * unopenable vdevs so that the normal autoreplace handler can take | |
| 756 * over. | |
| 757 */ | |
| 758 if (autoreplace) | |
| 759 spa_check_removed(spa->spa_root_vdev); | |
| 760 | |
| 761 /* | |
|
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762 * Load the vdev state for all toplevel vdevs. |
| 789 | 763 */ |
|
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764 vdev_load(rvd); |
| 789 | 765 |
| 766 /* | |
| 767 * Propagate the leaf DTLs we just loaded all the way up the tree. | |
| 768 */ | |
| 1544 | 769 spa_config_enter(spa, RW_WRITER, FTAG); |
| 789 | 770 vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
| 1544 | 771 spa_config_exit(spa, FTAG); |
| 789 | 772 |
| 773 /* | |
| 774 * Check the state of the root vdev. If it can't be opened, it | |
| 775 * indicates one or more toplevel vdevs are faulted. | |
| 776 */ | |
| 1544 | 777 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
| 778 error = ENXIO; | |
| 779 goto out; | |
| 780 } | |
| 789 | 781 |
| 1544 | 782 if ((spa_mode & FWRITE) && state != SPA_LOAD_TRYIMPORT) { |
|
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783 dmu_tx_t *tx; |
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784 int need_update = B_FALSE; |
|
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785 int c; |
|
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786 |
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787 /* |
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788 * Claim log blocks that haven't been committed yet. |
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789 * This must all happen in a single txg. |
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790 */ |
|
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791 tx = dmu_tx_create_assigned(spa_get_dsl(spa), |
| 789 | 792 spa_first_txg(spa)); |
| 2417 | 793 (void) dmu_objset_find(spa->spa_name, |
| 794 zil_claim, tx, DS_FIND_CHILDREN); | |
| 789 | 795 dmu_tx_commit(tx); |
| 796 | |
| 797 spa->spa_sync_on = B_TRUE; | |
| 798 txg_sync_start(spa->spa_dsl_pool); | |
| 799 | |
| 800 /* | |
| 801 * Wait for all claims to sync. | |
| 802 */ | |
| 803 txg_wait_synced(spa->spa_dsl_pool, 0); | |
|
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804 |
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805 /* |
|
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806 * If the config cache is stale, or we have uninitialized |
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807 * metaslabs (see spa_vdev_add()), then update the config. |
|
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808 */ |
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809 if (config_cache_txg != spa->spa_config_txg || |
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810 state == SPA_LOAD_IMPORT) |
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811 need_update = B_TRUE; |
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812 |
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813 for (c = 0; c < rvd->vdev_children; c++) |
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814 if (rvd->vdev_child[c]->vdev_ms_array == 0) |
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815 need_update = B_TRUE; |
|
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816 |
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817 /* |
|
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818 * Update the config cache asychronously in case we're the |
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819 * root pool, in which case the config cache isn't writable yet. |
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820 */ |
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821 if (need_update) |
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822 spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); |
| 789 | 823 } |
| 824 | |
| 1544 | 825 error = 0; |
| 826 out: | |
| 2082 | 827 if (error && error != EBADF) |
| 1544 | 828 zfs_ereport_post(FM_EREPORT_ZFS_POOL, spa, NULL, NULL, 0, 0); |
| 829 spa->spa_load_state = SPA_LOAD_NONE; | |
| 830 spa->spa_ena = 0; | |
| 831 | |
| 832 return (error); | |
| 789 | 833 } |
| 834 | |
| 835 /* | |
| 836 * Pool Open/Import | |
| 837 * | |
| 838 * The import case is identical to an open except that the configuration is sent | |
| 839 * down from userland, instead of grabbed from the configuration cache. For the | |
| 840 * case of an open, the pool configuration will exist in the | |
| 4451 | 841 * POOL_STATE_UNINITIALIZED state. |
| 789 | 842 * |
| 843 * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
| 844 * the same time open the pool, without having to keep around the spa_t in some | |
| 845 * ambiguous state. | |
| 846 */ | |
| 847 static int | |
| 848 spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t **config) | |
| 849 { | |
| 850 spa_t *spa; | |
| 851 int error; | |
| 852 int loaded = B_FALSE; | |
| 853 int locked = B_FALSE; | |
| 854 | |
| 855 *spapp = NULL; | |
| 856 | |
| 857 /* | |
| 858 * As disgusting as this is, we need to support recursive calls to this | |
| 859 * function because dsl_dir_open() is called during spa_load(), and ends | |
| 860 * up calling spa_open() again. The real fix is to figure out how to | |
| 861 * avoid dsl_dir_open() calling this in the first place. | |
| 862 */ | |
| 863 if (mutex_owner(&spa_namespace_lock) != curthread) { | |
| 864 mutex_enter(&spa_namespace_lock); | |
| 865 locked = B_TRUE; | |
| 866 } | |
| 867 | |
| 868 if ((spa = spa_lookup(pool)) == NULL) { | |
| 869 if (locked) | |
| 870 mutex_exit(&spa_namespace_lock); | |
| 871 return (ENOENT); | |
| 872 } | |
| 873 if (spa->spa_state == POOL_STATE_UNINITIALIZED) { | |
| 874 | |
| 875 spa_activate(spa); | |
| 876 | |
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877 error = spa_load(spa, spa->spa_config, SPA_LOAD_OPEN, B_FALSE); |
| 789 | 878 |
| 879 if (error == EBADF) { | |
| 880 /* | |
|
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881 * If vdev_validate() returns failure (indicated by |
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882 * EBADF), it indicates that one of the vdevs indicates |
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883 * that the pool has been exported or destroyed. If |
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884 * this is the case, the config cache is out of sync and |
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885 * we should remove the pool from the namespace. |
| 789 | 886 */ |
| 2082 | 887 zfs_post_ok(spa, NULL); |
| 789 | 888 spa_unload(spa); |
| 889 spa_deactivate(spa); | |
| 890 spa_remove(spa); | |
| 891 spa_config_sync(); | |
| 892 if (locked) | |
| 893 mutex_exit(&spa_namespace_lock); | |
| 894 return (ENOENT); | |
| 1544 | 895 } |
| 896 | |
| 897 if (error) { | |
| 789 | 898 /* |
| 899 * We can't open the pool, but we still have useful | |
| 900 * information: the state of each vdev after the | |
| 901 * attempted vdev_open(). Return this to the user. | |
| 902 */ | |
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903 if (config != NULL && spa->spa_root_vdev != NULL) { |
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904 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 905 *config = spa_config_generate(spa, NULL, -1ULL, |
| 906 B_TRUE); | |
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907 spa_config_exit(spa, FTAG); |
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908 } |
| 789 | 909 spa_unload(spa); |
| 910 spa_deactivate(spa); | |
| 1544 | 911 spa->spa_last_open_failed = B_TRUE; |
| 789 | 912 if (locked) |
| 913 mutex_exit(&spa_namespace_lock); | |
| 914 *spapp = NULL; | |
| 915 return (error); | |
| 1544 | 916 } else { |
| 917 zfs_post_ok(spa, NULL); | |
| 918 spa->spa_last_open_failed = B_FALSE; | |
| 789 | 919 } |
| 920 | |
| 921 loaded = B_TRUE; | |
| 922 } | |
| 923 | |
| 924 spa_open_ref(spa, tag); | |
| 4451 | 925 |
| 926 /* | |
| 927 * If we just loaded the pool, resilver anything that's out of date. | |
| 928 */ | |
| 929 if (loaded && (spa_mode & FWRITE)) | |
| 930 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 931 | |
| 789 | 932 if (locked) |
| 933 mutex_exit(&spa_namespace_lock); | |
| 934 | |
| 935 *spapp = spa; | |
| 936 | |
| 937 if (config != NULL) { | |
| 1544 | 938 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 939 *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
| 1544 | 940 spa_config_exit(spa, FTAG); |
| 789 | 941 } |
| 942 | |
| 943 return (0); | |
| 944 } | |
| 945 | |
| 946 int | |
| 947 spa_open(const char *name, spa_t **spapp, void *tag) | |
| 948 { | |
| 949 return (spa_open_common(name, spapp, tag, NULL)); | |
| 950 } | |
| 951 | |
| 1544 | 952 /* |
| 953 * Lookup the given spa_t, incrementing the inject count in the process, | |
| 954 * preventing it from being exported or destroyed. | |
| 955 */ | |
| 956 spa_t * | |
| 957 spa_inject_addref(char *name) | |
| 958 { | |
| 959 spa_t *spa; | |
| 960 | |
| 961 mutex_enter(&spa_namespace_lock); | |
| 962 if ((spa = spa_lookup(name)) == NULL) { | |
| 963 mutex_exit(&spa_namespace_lock); | |
| 964 return (NULL); | |
| 965 } | |
| 966 spa->spa_inject_ref++; | |
| 967 mutex_exit(&spa_namespace_lock); | |
| 968 | |
| 969 return (spa); | |
| 970 } | |
| 971 | |
| 972 void | |
| 973 spa_inject_delref(spa_t *spa) | |
| 974 { | |
| 975 mutex_enter(&spa_namespace_lock); | |
| 976 spa->spa_inject_ref--; | |
| 977 mutex_exit(&spa_namespace_lock); | |
| 978 } | |
| 979 | |
| 2082 | 980 static void |
| 981 spa_add_spares(spa_t *spa, nvlist_t *config) | |
| 982 { | |
| 983 nvlist_t **spares; | |
| 984 uint_t i, nspares; | |
| 985 nvlist_t *nvroot; | |
| 986 uint64_t guid; | |
| 987 vdev_stat_t *vs; | |
| 988 uint_t vsc; | |
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989 uint64_t pool; |
| 2082 | 990 |
| 991 if (spa->spa_nspares == 0) | |
| 992 return; | |
| 993 | |
| 994 VERIFY(nvlist_lookup_nvlist(config, | |
| 995 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
| 996 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 997 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 998 if (nspares != 0) { | |
| 999 VERIFY(nvlist_add_nvlist_array(nvroot, | |
| 1000 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1001 VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
| 1002 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 1003 | |
| 1004 /* | |
| 1005 * Go through and find any spares which have since been | |
| 1006 * repurposed as an active spare. If this is the case, update | |
| 1007 * their status appropriately. | |
| 1008 */ | |
| 1009 for (i = 0; i < nspares; i++) { | |
| 1010 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 1011 ZPOOL_CONFIG_GUID, &guid) == 0); | |
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1012 if (spa_spare_exists(guid, &pool) && pool != 0ULL) { |
| 2082 | 1013 VERIFY(nvlist_lookup_uint64_array( |
| 1014 spares[i], ZPOOL_CONFIG_STATS, | |
| 1015 (uint64_t **)&vs, &vsc) == 0); | |
| 1016 vs->vs_state = VDEV_STATE_CANT_OPEN; | |
| 1017 vs->vs_aux = VDEV_AUX_SPARED; | |
| 1018 } | |
| 1019 } | |
| 1020 } | |
| 1021 } | |
| 1022 | |
| 789 | 1023 int |
| 1544 | 1024 spa_get_stats(const char *name, nvlist_t **config, char *altroot, size_t buflen) |
| 789 | 1025 { |
| 1026 int error; | |
| 1027 spa_t *spa; | |
| 1028 | |
| 1029 *config = NULL; | |
| 1030 error = spa_open_common(name, &spa, FTAG, config); | |
| 1031 | |
| 2082 | 1032 if (spa && *config != NULL) { |
| 1544 | 1033 VERIFY(nvlist_add_uint64(*config, ZPOOL_CONFIG_ERRCOUNT, |
| 1034 spa_get_errlog_size(spa)) == 0); | |
| 1035 | |
| 2082 | 1036 spa_add_spares(spa, *config); |
| 1037 } | |
| 1038 | |
| 1544 | 1039 /* |
| 1040 * We want to get the alternate root even for faulted pools, so we cheat | |
| 1041 * and call spa_lookup() directly. | |
| 1042 */ | |
| 1043 if (altroot) { | |
| 1044 if (spa == NULL) { | |
| 1045 mutex_enter(&spa_namespace_lock); | |
| 1046 spa = spa_lookup(name); | |
| 1047 if (spa) | |
| 1048 spa_altroot(spa, altroot, buflen); | |
| 1049 else | |
| 1050 altroot[0] = '\0'; | |
| 1051 spa = NULL; | |
| 1052 mutex_exit(&spa_namespace_lock); | |
| 1053 } else { | |
| 1054 spa_altroot(spa, altroot, buflen); | |
| 1055 } | |
| 1056 } | |
| 1057 | |
| 789 | 1058 if (spa != NULL) |
| 1059 spa_close(spa, FTAG); | |
| 1060 | |
| 1061 return (error); | |
| 1062 } | |
| 1063 | |
| 1064 /* | |
| 2082 | 1065 * Validate that the 'spares' array is well formed. We must have an array of |
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1066 * nvlists, each which describes a valid leaf vdev. If this is an import (mode |
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1067 * is VDEV_ALLOC_SPARE), then we allow corrupted spares to be specified, as long |
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1068 * as they are well-formed. |
| 2082 | 1069 */ |
| 1070 static int | |
| 1071 spa_validate_spares(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
| 1072 { | |
| 1073 nvlist_t **spares; | |
| 1074 uint_t i, nspares; | |
| 1075 vdev_t *vd; | |
| 1076 int error; | |
| 1077 | |
| 1078 /* | |
| 1079 * It's acceptable to have no spares specified. | |
| 1080 */ | |
| 1081 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1082 &spares, &nspares) != 0) | |
| 1083 return (0); | |
| 1084 | |
| 1085 if (nspares == 0) | |
| 1086 return (EINVAL); | |
| 1087 | |
| 1088 /* | |
| 1089 * Make sure the pool is formatted with a version that supports hot | |
| 1090 * spares. | |
| 1091 */ | |
| 1092 if (spa_version(spa) < ZFS_VERSION_SPARES) | |
| 1093 return (ENOTSUP); | |
| 1094 | |
|
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1095 /* |
|
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1096 * Set the pending spare list so we correctly handle device in-use |
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1097 * checking. |
|
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1098 */ |
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1099 spa->spa_pending_spares = spares; |
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1100 spa->spa_pending_nspares = nspares; |
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1101 |
| 2082 | 1102 for (i = 0; i < nspares; i++) { |
| 1103 if ((error = spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
| 1104 mode)) != 0) | |
|
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1105 goto out; |
| 2082 | 1106 |
| 1107 if (!vd->vdev_ops->vdev_op_leaf) { | |
| 1108 vdev_free(vd); | |
|
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1109 error = EINVAL; |
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1110 goto out; |
| 2082 | 1111 } |
| 1112 | |
| 1113 vd->vdev_top = vd; | |
|
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1114 |
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1115 if ((error = vdev_open(vd)) == 0 && |
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1116 (error = vdev_label_init(vd, crtxg, |
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1117 VDEV_LABEL_SPARE)) == 0) { |
|
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1118 VERIFY(nvlist_add_uint64(spares[i], ZPOOL_CONFIG_GUID, |
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1119 vd->vdev_guid) == 0); |
| 2082 | 1120 } |
| 1121 | |
| 1122 vdev_free(vd); | |
|
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1123 |
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1124 if (error && mode != VDEV_ALLOC_SPARE) |
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1125 goto out; |
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1126 else |
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1127 error = 0; |
| 2082 | 1128 } |
| 1129 | |
|
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1130 out: |
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1131 spa->spa_pending_spares = NULL; |
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1132 spa->spa_pending_nspares = 0; |
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1133 return (error); |
| 2082 | 1134 } |
| 1135 | |
| 1136 /* | |
| 789 | 1137 * Pool Creation |
| 1138 */ | |
| 1139 int | |
|
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1140 spa_create(const char *pool, nvlist_t *nvroot, const char *altroot) |
| 789 | 1141 { |
| 1142 spa_t *spa; | |
|
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1143 vdev_t *rvd; |
| 789 | 1144 dsl_pool_t *dp; |
| 1145 dmu_tx_t *tx; | |
| 2082 | 1146 int c, error = 0; |
| 789 | 1147 uint64_t txg = TXG_INITIAL; |
| 2082 | 1148 nvlist_t **spares; |
| 1149 uint_t nspares; | |
| 789 | 1150 |
| 1151 /* | |
| 1152 * If this pool already exists, return failure. | |
| 1153 */ | |
| 1154 mutex_enter(&spa_namespace_lock); | |
| 1155 if (spa_lookup(pool) != NULL) { | |
| 1156 mutex_exit(&spa_namespace_lock); | |
| 1157 return (EEXIST); | |
| 1158 } | |
| 1159 | |
| 1160 /* | |
| 1161 * Allocate a new spa_t structure. | |
| 1162 */ | |
|
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1163 spa = spa_add(pool, altroot); |
| 789 | 1164 spa_activate(spa); |
| 1165 | |
| 1166 spa->spa_uberblock.ub_txg = txg - 1; | |
| 1760 | 1167 spa->spa_uberblock.ub_version = ZFS_VERSION; |
| 789 | 1168 spa->spa_ubsync = spa->spa_uberblock; |
| 1169 | |
|
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1170 /* |
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1171 * Create the root vdev. |
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1172 */ |
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1173 spa_config_enter(spa, RW_WRITER, FTAG); |
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1174 |
| 2082 | 1175 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); |
| 1176 | |
| 1177 ASSERT(error != 0 || rvd != NULL); | |
| 1178 ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
| 1179 | |
| 1180 if (error == 0 && rvd->vdev_children == 0) | |
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1181 error = EINVAL; |
| 2082 | 1182 |
| 1183 if (error == 0 && | |
| 1184 (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
| 1185 (error = spa_validate_spares(spa, nvroot, txg, | |
| 1186 VDEV_ALLOC_ADD)) == 0) { | |
| 1187 for (c = 0; c < rvd->vdev_children; c++) | |
| 1188 vdev_init(rvd->vdev_child[c], txg); | |
| 1189 vdev_config_dirty(rvd); | |
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1190 } |
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1191 |
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1192 spa_config_exit(spa, FTAG); |
| 789 | 1193 |
| 2082 | 1194 if (error != 0) { |
| 789 | 1195 spa_unload(spa); |
| 1196 spa_deactivate(spa); | |
| 1197 spa_remove(spa); | |
| 1198 mutex_exit(&spa_namespace_lock); | |
| 1199 return (error); | |
| 1200 } | |
| 1201 | |
| 2082 | 1202 /* |
| 1203 * Get the list of spares, if specified. | |
| 1204 */ | |
| 1205 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1206 &spares, &nspares) == 0) { | |
| 1207 VERIFY(nvlist_alloc(&spa->spa_sparelist, NV_UNIQUE_NAME, | |
| 1208 KM_SLEEP) == 0); | |
| 1209 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1210 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1211 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1212 spa_load_spares(spa); | |
| 1213 spa_config_exit(spa, FTAG); | |
| 1214 spa->spa_sync_spares = B_TRUE; | |
| 1215 } | |
| 1216 | |
| 789 | 1217 spa->spa_dsl_pool = dp = dsl_pool_create(spa, txg); |
| 1218 spa->spa_meta_objset = dp->dp_meta_objset; | |
| 1219 | |
| 1220 tx = dmu_tx_create_assigned(dp, txg); | |
| 1221 | |
| 1222 /* | |
| 1223 * Create the pool config object. | |
| 1224 */ | |
| 1225 spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
| 1226 DMU_OT_PACKED_NVLIST, 1 << 14, | |
| 1227 DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); | |
| 1228 | |
| 1544 | 1229 if (zap_add(spa->spa_meta_objset, |
| 789 | 1230 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
| 1544 | 1231 sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { |
| 1232 cmn_err(CE_PANIC, "failed to add pool config"); | |
| 1233 } | |
| 789 | 1234 |
| 2082 | 1235 /* Newly created pools are always deflated. */ |
| 1236 spa->spa_deflate = TRUE; | |
| 1237 if (zap_add(spa->spa_meta_objset, | |
| 1238 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 1239 sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
| 1240 cmn_err(CE_PANIC, "failed to add deflate"); | |
| 1241 } | |
| 1242 | |
| 789 | 1243 /* |
| 1244 * Create the deferred-free bplist object. Turn off compression | |
| 1245 * because sync-to-convergence takes longer if the blocksize | |
| 1246 * keeps changing. | |
| 1247 */ | |
| 1248 spa->spa_sync_bplist_obj = bplist_create(spa->spa_meta_objset, | |
| 1249 1 << 14, tx); | |
| 1250 dmu_object_set_compress(spa->spa_meta_objset, spa->spa_sync_bplist_obj, | |
| 1251 ZIO_COMPRESS_OFF, tx); | |
| 1252 | |
| 1544 | 1253 if (zap_add(spa->spa_meta_objset, |
| 789 | 1254 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, |
| 1544 | 1255 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj, tx) != 0) { |
| 1256 cmn_err(CE_PANIC, "failed to add bplist"); | |
| 1257 } | |
| 789 | 1258 |
| 2926 | 1259 /* |
| 1260 * Create the pool's history object. | |
| 1261 */ | |
| 1262 spa_history_create_obj(spa, tx); | |
| 1263 | |
| 789 | 1264 dmu_tx_commit(tx); |
| 1265 | |
| 4451 | 1266 spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); |
| 4543 | 1267 spa->spa_delegation = zfs_prop_default_numeric(ZPOOL_PROP_DELEGATION); |
| 789 | 1268 spa->spa_sync_on = B_TRUE; |
| 1269 txg_sync_start(spa->spa_dsl_pool); | |
| 1270 | |
| 1271 /* | |
| 1272 * We explicitly wait for the first transaction to complete so that our | |
| 1273 * bean counters are appropriately updated. | |
| 1274 */ | |
| 1275 txg_wait_synced(spa->spa_dsl_pool, txg); | |
| 1276 | |
| 1277 spa_config_sync(); | |
| 1278 | |
| 1279 mutex_exit(&spa_namespace_lock); | |
| 1280 | |
| 1281 return (0); | |
| 1282 } | |
| 1283 | |
| 1284 /* | |
| 1285 * Import the given pool into the system. We set up the necessary spa_t and | |
| 1286 * then call spa_load() to do the dirty work. | |
| 1287 */ | |
| 1288 int | |
|
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1289 spa_import(const char *pool, nvlist_t *config, const char *altroot) |
| 789 | 1290 { |
| 1291 spa_t *spa; | |
| 1292 int error; | |
| 2082 | 1293 nvlist_t *nvroot; |
| 1294 nvlist_t **spares; | |
| 1295 uint_t nspares; | |
| 789 | 1296 |
| 1297 if (!(spa_mode & FWRITE)) | |
| 1298 return (EROFS); | |
| 1299 | |
| 1300 /* | |
| 1301 * If a pool with this name exists, return failure. | |
| 1302 */ | |
| 1303 mutex_enter(&spa_namespace_lock); | |
| 1304 if (spa_lookup(pool) != NULL) { | |
| 1305 mutex_exit(&spa_namespace_lock); | |
| 1306 return (EEXIST); | |
| 1307 } | |
| 1308 | |
| 1309 /* | |
|
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1310 * Create and initialize the spa structure. |
| 789 | 1311 */ |
|
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1312 spa = spa_add(pool, altroot); |
| 789 | 1313 spa_activate(spa); |
| 1314 | |
| 1315 /* | |
|
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1316 * Pass off the heavy lifting to spa_load(). |
| 1732 | 1317 * Pass TRUE for mosconfig because the user-supplied config |
| 1318 * is actually the one to trust when doing an import. | |
|
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1319 */ |
| 1732 | 1320 error = spa_load(spa, config, SPA_LOAD_IMPORT, B_TRUE); |
| 789 | 1321 |
| 2082 | 1322 spa_config_enter(spa, RW_WRITER, FTAG); |
| 1323 /* | |
| 1324 * Toss any existing sparelist, as it doesn't have any validity anymore, | |
| 1325 * and conflicts with spa_has_spare(). | |
| 1326 */ | |
| 1327 if (spa->spa_sparelist) { | |
| 1328 nvlist_free(spa->spa_sparelist); | |
| 1329 spa->spa_sparelist = NULL; | |
| 1330 spa_load_spares(spa); | |
| 1331 } | |
| 1332 | |
| 1333 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
| 1334 &nvroot) == 0); | |
| 1335 if (error == 0) | |
| 1336 error = spa_validate_spares(spa, nvroot, -1ULL, | |
| 1337 VDEV_ALLOC_SPARE); | |
| 1338 spa_config_exit(spa, FTAG); | |
| 1339 | |
| 1340 if (error != 0) { | |
| 789 | 1341 spa_unload(spa); |
| 1342 spa_deactivate(spa); | |
| 1343 spa_remove(spa); | |
| 1344 mutex_exit(&spa_namespace_lock); | |
| 1345 return (error); | |
| 1346 } | |
| 1347 | |
|
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1348 /* |
| 2082 | 1349 * Override any spares as specified by the user, as these may have |
| 1350 * correct device names/devids, etc. | |
| 1351 */ | |
| 1352 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1353 &spares, &nspares) == 0) { | |
| 1354 if (spa->spa_sparelist) | |
| 1355 VERIFY(nvlist_remove(spa->spa_sparelist, | |
| 1356 ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 1357 else | |
| 1358 VERIFY(nvlist_alloc(&spa->spa_sparelist, | |
| 1359 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 1360 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1361 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1362 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1363 spa_load_spares(spa); | |
| 1364 spa_config_exit(spa, FTAG); | |
| 1365 spa->spa_sync_spares = B_TRUE; | |
| 1366 } | |
| 1367 | |
| 1368 /* | |
|
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1369 * Update the config cache to include the newly-imported pool. |
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1370 */ |
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1371 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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1372 |
| 789 | 1373 /* |
| 1374 * Resilver anything that's out of date. | |
| 1375 */ | |
| 1376 if (spa_mode & FWRITE) | |
| 1377 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 1378 | |
| 4451 | 1379 mutex_exit(&spa_namespace_lock); |
| 1380 | |
| 789 | 1381 return (0); |
| 1382 } | |
| 1383 | |
| 1384 /* | |
| 1385 * This (illegal) pool name is used when temporarily importing a spa_t in order | |
| 1386 * to get the vdev stats associated with the imported devices. | |
| 1387 */ | |
| 1388 #define TRYIMPORT_NAME "$import" | |
| 1389 | |
| 1390 nvlist_t * | |
| 1391 spa_tryimport(nvlist_t *tryconfig) | |
| 1392 { | |
| 1393 nvlist_t *config = NULL; | |
| 1394 char *poolname; | |
| 1395 spa_t *spa; | |
| 1396 uint64_t state; | |
| 1397 | |
| 1398 if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
| 1399 return (NULL); | |
| 1400 | |
| 1401 if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
| 1402 return (NULL); | |
| 1403 | |
|
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1404 /* |
|
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1405 * Create and initialize the spa structure. |
|
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1406 */ |
| 789 | 1407 mutex_enter(&spa_namespace_lock); |
|
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1408 spa = spa_add(TRYIMPORT_NAME, NULL); |
| 789 | 1409 spa_activate(spa); |
| 1410 | |
| 1411 /* | |
|
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1412 * Pass off the heavy lifting to spa_load(). |
| 1732 | 1413 * Pass TRUE for mosconfig because the user-supplied config |
| 1414 * is actually the one to trust when doing an import. | |
| 789 | 1415 */ |
| 1732 | 1416 (void) spa_load(spa, tryconfig, SPA_LOAD_TRYIMPORT, B_TRUE); |
| 789 | 1417 |
| 1418 /* | |
| 1419 * If 'tryconfig' was at least parsable, return the current config. | |
| 1420 */ | |
| 1421 if (spa->spa_root_vdev != NULL) { | |
|
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1422 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 1423 config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
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1424 spa_config_exit(spa, FTAG); |
| 789 | 1425 VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
| 1426 poolname) == 0); | |
| 1427 VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
| 1428 state) == 0); | |
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1429 VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, |
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1430 spa->spa_uberblock.ub_timestamp) == 0); |
| 2082 | 1431 |
| 1432 /* | |
| 1433 * Add the list of hot spares. | |
| 1434 */ | |
| 1435 spa_add_spares(spa, config); | |
| 789 | 1436 } |
| 1437 | |
| 1438 spa_unload(spa); | |
| 1439 spa_deactivate(spa); | |
| 1440 spa_remove(spa); | |
| 1441 mutex_exit(&spa_namespace_lock); | |
| 1442 | |
| 1443 return (config); | |
| 1444 } | |
| 1445 | |
| 1446 /* | |
| 1447 * Pool export/destroy | |
| 1448 * | |
| 1449 * The act of destroying or exporting a pool is very simple. We make sure there | |
| 1450 * is no more pending I/O and any references to the pool are gone. Then, we | |
| 1451 * update the pool state and sync all the labels to disk, removing the | |
| 1452 * configuration from the cache afterwards. | |
| 1453 */ | |
| 1454 static int | |
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1455 spa_export_common(char *pool, int new_state, nvlist_t **oldconfig) |
| 789 | 1456 { |
| 1457 spa_t *spa; | |
| 1458 | |
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1459 if (oldconfig) |
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1460 *oldconfig = NULL; |
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1461 |
| 789 | 1462 if (!(spa_mode & FWRITE)) |
| 1463 return (EROFS); | |
| 1464 | |
| 1465 mutex_enter(&spa_namespace_lock); | |
| 1466 if ((spa = spa_lookup(pool)) == NULL) { | |
| 1467 mutex_exit(&spa_namespace_lock); | |
| 1468 return (ENOENT); | |
| 1469 } | |
| 1470 | |
| 1471 /* | |
| 1544 | 1472 * Put a hold on the pool, drop the namespace lock, stop async tasks, |
| 1473 * reacquire the namespace lock, and see if we can export. | |
| 1474 */ | |
| 1475 spa_open_ref(spa, FTAG); | |
| 1476 mutex_exit(&spa_namespace_lock); | |
| 1477 spa_async_suspend(spa); | |
| 1478 mutex_enter(&spa_namespace_lock); | |
| 1479 spa_close(spa, FTAG); | |
| 1480 | |
| 1481 /* | |
| 789 | 1482 * The pool will be in core if it's openable, |
| 1483 * in which case we can modify its state. | |
| 1484 */ | |
| 1485 if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) { | |
| 1486 /* | |
| 1487 * Objsets may be open only because they're dirty, so we | |
| 1488 * have to force it to sync before checking spa_refcnt. | |
| 1489 */ | |
| 1490 spa_scrub_suspend(spa); | |
| 1491 txg_wait_synced(spa->spa_dsl_pool, 0); | |
| 1492 | |
| 1544 | 1493 /* |
| 1494 * A pool cannot be exported or destroyed if there are active | |
| 1495 * references. If we are resetting a pool, allow references by | |
| 1496 * fault injection handlers. | |
| 1497 */ | |
| 1498 if (!spa_refcount_zero(spa) || | |
| 1499 (spa->spa_inject_ref != 0 && | |
| 1500 new_state != POOL_STATE_UNINITIALIZED)) { | |
| 789 | 1501 spa_scrub_resume(spa); |
| 1544 | 1502 spa_async_resume(spa); |
| 789 | 1503 mutex_exit(&spa_namespace_lock); |
| 1504 return (EBUSY); | |
| 1505 } | |
| 1506 | |
| 1507 spa_scrub_resume(spa); | |
| 1508 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); | |
| 1509 | |
| 1510 /* | |
| 1511 * We want this to be reflected on every label, | |
| 1512 * so mark them all dirty. spa_unload() will do the | |
| 1513 * final sync that pushes these changes out. | |
| 1514 */ | |
| 1544 | 1515 if (new_state != POOL_STATE_UNINITIALIZED) { |
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1516 spa_config_enter(spa, RW_WRITER, FTAG); |
| 1544 | 1517 spa->spa_state = new_state; |
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1518 spa->spa_final_txg = spa_last_synced_txg(spa) + 1; |
| 1544 | 1519 vdev_config_dirty(spa->spa_root_vdev); |
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1520 spa_config_exit(spa, FTAG); |
| 1544 | 1521 } |
| 789 | 1522 } |
| 1523 | |
| 4451 | 1524 spa_event_notify(spa, NULL, ESC_ZFS_POOL_DESTROY); |
| 1525 | |
| 789 | 1526 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { |
| 1527 spa_unload(spa); | |
| 1528 spa_deactivate(spa); | |
| 1529 } | |
| 1530 | |
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1531 if (oldconfig && spa->spa_config) |
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1532 VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); |
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1533 |
| 1544 | 1534 if (new_state != POOL_STATE_UNINITIALIZED) { |
| 1535 spa_remove(spa); | |
| 1536 spa_config_sync(); | |
| 1537 } | |
| 789 | 1538 mutex_exit(&spa_namespace_lock); |
| 1539 | |
| 1540 return (0); | |
| 1541 } | |
| 1542 | |
| 1543 /* | |
| 1544 * Destroy a storage pool. | |
| 1545 */ | |
| 1546 int | |
| 1547 spa_destroy(char *pool) | |
| 1548 { | |
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1549 return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL)); |
| 789 | 1550 } |
| 1551 | |
| 1552 /* | |
| 1553 * Export a storage pool. | |
| 1554 */ | |
| 1555 int | |
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1556 spa_export(char *pool, nvlist_t **oldconfig) |
| 789 | 1557 { |
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1558 return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig)); |
| 789 | 1559 } |
| 1560 | |
| 1561 /* | |
| 1544 | 1562 * Similar to spa_export(), this unloads the spa_t without actually removing it |
| 1563 * from the namespace in any way. | |
| 1564 */ | |
| 1565 int | |
| 1566 spa_reset(char *pool) | |
| 1567 { | |
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1568 return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL)); |
| 1544 | 1569 } |
| 1570 | |
| 1571 | |
| 1572 /* | |
| 789 | 1573 * ========================================================================== |
| 1574 * Device manipulation | |
| 1575 * ========================================================================== | |
| 1576 */ | |
| 1577 | |
| 1578 /* | |
| 4527 | 1579 * Add a device to a storage pool. |
| 789 | 1580 */ |
| 1581 int | |
| 1582 spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
| 1583 { | |
| 1584 uint64_t txg; | |
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1585 int c, error; |
| 789 | 1586 vdev_t *rvd = spa->spa_root_vdev; |
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1587 vdev_t *vd, *tvd; |
| 2082 | 1588 nvlist_t **spares; |
| 1589 uint_t i, nspares; | |
| 789 | 1590 |
| 1591 txg = spa_vdev_enter(spa); | |
| 1592 | |
| 2082 | 1593 if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, |
| 1594 VDEV_ALLOC_ADD)) != 0) | |
| 1595 return (spa_vdev_exit(spa, NULL, txg, error)); | |
| 1596 | |
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1597 spa->spa_pending_vdev = vd; |
| 789 | 1598 |
| 2082 | 1599 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, |
| 1600 &spares, &nspares) != 0) | |
| 1601 nspares = 0; | |
| 1602 | |
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1603 if (vd->vdev_children == 0 && nspares == 0) { |
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1604 spa->spa_pending_vdev = NULL; |
| 2082 | 1605 return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
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1606 } |
| 2082 | 1607 |
| 1608 if (vd->vdev_children != 0) { | |
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1609 if ((error = vdev_create(vd, txg, B_FALSE)) != 0) { |
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1610 spa->spa_pending_vdev = NULL; |
| 2082 | 1611 return (spa_vdev_exit(spa, vd, txg, error)); |
| 1612 } | |
| 1613 } | |
| 1614 | |
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1615 /* |
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1616 * We must validate the spares after checking the children. Otherwise, |
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1617 * vdev_inuse() will blindly overwrite the spare. |
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1618 */ |
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1619 if ((error = spa_validate_spares(spa, nvroot, txg, |
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1620 VDEV_ALLOC_ADD)) != 0) { |
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1621 spa->spa_pending_vdev = NULL; |
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1622 return (spa_vdev_exit(spa, vd, txg, error)); |
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1623 } |
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1624 |
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1625 spa->spa_pending_vdev = NULL; |
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1626 |
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1627 /* |
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1628 * Transfer each new top-level vdev from vd to rvd. |
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1629 */ |
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1630 for (c = 0; c < vd->vdev_children; c++) { |
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1631 tvd = vd->vdev_child[c]; |
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1632 vdev_remove_child(vd, tvd); |
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1633 tvd->vdev_id = rvd->vdev_children; |
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1634 vdev_add_child(rvd, tvd); |
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1635 vdev_config_dirty(tvd); |
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1636 } |
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1637 |
| 2082 | 1638 if (nspares != 0) { |
| 1639 if (spa->spa_sparelist != NULL) { | |
| 1640 nvlist_t **oldspares; | |
| 1641 uint_t oldnspares; | |
| 1642 nvlist_t **newspares; | |
| 1643 | |
| 1644 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 1645 ZPOOL_CONFIG_SPARES, &oldspares, &oldnspares) == 0); | |
| 1646 | |
| 1647 newspares = kmem_alloc(sizeof (void *) * | |
| 1648 (nspares + oldnspares), KM_SLEEP); | |
| 1649 for (i = 0; i < oldnspares; i++) | |
| 1650 VERIFY(nvlist_dup(oldspares[i], | |
| 1651 &newspares[i], KM_SLEEP) == 0); | |
| 1652 for (i = 0; i < nspares; i++) | |
| 1653 VERIFY(nvlist_dup(spares[i], | |
| 1654 &newspares[i + oldnspares], | |
| 1655 KM_SLEEP) == 0); | |
| 1656 | |
| 1657 VERIFY(nvlist_remove(spa->spa_sparelist, | |
| 1658 ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 1659 | |
| 1660 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1661 ZPOOL_CONFIG_SPARES, newspares, | |
| 1662 nspares + oldnspares) == 0); | |
| 1663 for (i = 0; i < oldnspares + nspares; i++) | |
| 1664 nvlist_free(newspares[i]); | |
| 1665 kmem_free(newspares, (oldnspares + nspares) * | |
| 1666 sizeof (void *)); | |
| 1667 } else { | |
| 1668 VERIFY(nvlist_alloc(&spa->spa_sparelist, | |
| 1669 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 1670 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1671 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1672 } | |
| 1673 | |
| 1674 spa_load_spares(spa); | |
| 1675 spa->spa_sync_spares = B_TRUE; | |
| 789 | 1676 } |
| 1677 | |
| 1678 /* | |
|
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1679 * We have to be careful when adding new vdevs to an existing pool. |
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1680 * If other threads start allocating from these vdevs before we |
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1681 * sync the config cache, and we lose power, then upon reboot we may |
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1682 * fail to open the pool because there are DVAs that the config cache |
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1683 * can't translate. Therefore, we first add the vdevs without |
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1684 * initializing metaslabs; sync the config cache (via spa_vdev_exit()); |
|
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1685 * and then let spa_config_update() initialize the new metaslabs. |
|
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1686 * |
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1687 * spa_load() checks for added-but-not-initialized vdevs, so that |
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1688 * if we lose power at any point in this sequence, the remaining |
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1689 * steps will be completed the next time we load the pool. |
| 789 | 1690 */ |
|
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1691 (void) spa_vdev_exit(spa, vd, txg, 0); |
|
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1692 |
|
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1693 mutex_enter(&spa_namespace_lock); |
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1694 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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1695 mutex_exit(&spa_namespace_lock); |
| 789 | 1696 |
|
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1697 return (0); |
| 789 | 1698 } |
| 1699 | |
| 1700 /* | |
| 1701 * Attach a device to a mirror. The arguments are the path to any device | |
| 1702 * in the mirror, and the nvroot for the new device. If the path specifies | |
| 1703 * a device that is not mirrored, we automatically insert the mirror vdev. | |
| 1704 * | |
| 1705 * If 'replacing' is specified, the new device is intended to replace the | |
| 1706 * existing device; in this case the two devices are made into their own | |
| 4451 | 1707 * mirror using the 'replacing' vdev, which is functionally identical to |
| 789 | 1708 * the mirror vdev (it actually reuses all the same ops) but has a few |
| 1709 * extra rules: you can't attach to it after it's been created, and upon | |
| 1710 * completion of resilvering, the first disk (the one being replaced) | |
| 1711 * is automatically detached. | |
| 1712 */ | |
| 1713 int | |
| 1544 | 1714 spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) |
| 789 | 1715 { |
| 1716 uint64_t txg, open_txg; | |
| 1717 int error; | |
| 1718 vdev_t *rvd = spa->spa_root_vdev; | |
| 1719 vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; | |
| 2082 | 1720 vdev_ops_t *pvops; |
| 4527 | 1721 int is_log; |
| 789 | 1722 |
| 1723 txg = spa_vdev_enter(spa); | |
| 1724 | |
| 1544 | 1725 oldvd = vdev_lookup_by_guid(rvd, guid); |
| 789 | 1726 |
| 1727 if (oldvd == NULL) | |
| 1728 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
| 1729 | |
|
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1730 if (!oldvd->vdev_ops->vdev_op_leaf) |
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1731 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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1732 |
| 789 | 1733 pvd = oldvd->vdev_parent; |
| 1734 | |
| 2082 | 1735 if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, |
| 4451 | 1736 VDEV_ALLOC_ADD)) != 0) |
| 1737 return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
| 1738 | |
| 1739 if (newrootvd->vdev_children != 1) | |
| 789 | 1740 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); |
| 1741 | |
| 1742 newvd = newrootvd->vdev_child[0]; | |
| 1743 | |
| 1744 if (!newvd->vdev_ops->vdev_op_leaf) | |
| 1745 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
| 1746 | |
| 2082 | 1747 if ((error = vdev_create(newrootvd, txg, replacing)) != 0) |
| 789 | 1748 return (spa_vdev_exit(spa, newrootvd, txg, error)); |
| 1749 | |
| 4527 | 1750 /* |
| 1751 * Spares can't replace logs | |
| 1752 */ | |
| 1753 is_log = oldvd->vdev_islog; | |
| 1754 if (is_log && newvd->vdev_isspare) | |
| 1755 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1756 | |
| 2082 | 1757 if (!replacing) { |
| 1758 /* | |
| 1759 * For attach, the only allowable parent is a mirror or the root | |
| 1760 * vdev. | |
| 1761 */ | |
| 1762 if (pvd->vdev_ops != &vdev_mirror_ops && | |
| 1763 pvd->vdev_ops != &vdev_root_ops) | |
| 1764 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1765 | |
| 1766 pvops = &vdev_mirror_ops; | |
| 1767 } else { | |
| 1768 /* | |
| 1769 * Active hot spares can only be replaced by inactive hot | |
| 1770 * spares. | |
| 1771 */ | |
| 1772 if (pvd->vdev_ops == &vdev_spare_ops && | |
| 1773 pvd->vdev_child[1] == oldvd && | |
| 1774 !spa_has_spare(spa, newvd->vdev_guid)) | |
| 1775 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1776 | |
| 1777 /* | |
| 1778 * If the source is a hot spare, and the parent isn't already a | |
| 1779 * spare, then we want to create a new hot spare. Otherwise, we | |
|
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1780 * want to create a replacing vdev. The user is not allowed to |
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1781 * attach to a spared vdev child unless the 'isspare' state is |
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1782 * the same (spare replaces spare, non-spare replaces |
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1783 * non-spare). |
| 2082 | 1784 */ |
| 1785 if (pvd->vdev_ops == &vdev_replacing_ops) | |
| 1786 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
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1787 else if (pvd->vdev_ops == &vdev_spare_ops && |
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1788 newvd->vdev_isspare != oldvd->vdev_isspare) |
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1789 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
| 2082 | 1790 else if (pvd->vdev_ops != &vdev_spare_ops && |
| 1791 newvd->vdev_isspare) | |
| 1792 pvops = &vdev_spare_ops; | |
| 1793 else | |
| 1794 pvops = &vdev_replacing_ops; | |
| 1795 } | |
| 1796 | |
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1797 /* |
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1798 * Compare the new device size with the replaceable/attachable |
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1799 * device size. |
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1800 */ |
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1801 if (newvd->vdev_psize < vdev_get_rsize(oldvd)) |
| 789 | 1802 return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
| 1803 | |
| 1732 | 1804 /* |
| 1805 * The new device cannot have a higher alignment requirement | |
| 1806 * than the top-level vdev. | |
| 1807 */ | |
| 1808 if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
| 789 | 1809 return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); |
| 1810 | |
| 1811 /* | |
| 1812 * If this is an in-place replacement, update oldvd's path and devid | |
| 1813 * to make it distinguishable from newvd, and unopenable from now on. | |
| 1814 */ | |
| 1815 if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
| 1816 spa_strfree(oldvd->vdev_path); | |
| 1817 oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
| 1818 KM_SLEEP); | |
| 1819 (void) sprintf(oldvd->vdev_path, "%s/%s", | |
| 1820 newvd->vdev_path, "old"); | |
| 1821 if (oldvd->vdev_devid != NULL) { | |
| 1822 spa_strfree(oldvd->vdev_devid); | |
| 1823 oldvd->vdev_devid = NULL; | |
| 1824 } | |
| 1825 } | |
| 1826 | |
| 1827 /* | |
| 2082 | 1828 * If the parent is not a mirror, or if we're replacing, insert the new |
| 1829 * mirror/replacing/spare vdev above oldvd. | |
| 789 | 1830 */ |
| 1831 if (pvd->vdev_ops != pvops) | |
| 1832 pvd = vdev_add_parent(oldvd, pvops); | |
| 1833 | |
| 1834 ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
| 1835 ASSERT(pvd->vdev_ops == pvops); | |
| 1836 ASSERT(oldvd->vdev_parent == pvd); | |
| 1837 | |
| 1838 /* | |
| 1839 * Extract the new device from its root and add it to pvd. | |
| 1840 */ | |
| 1841 vdev_remove_child(newrootvd, newvd); | |
| 1842 newvd->vdev_id = pvd->vdev_children; | |
| 1843 vdev_add_child(pvd, newvd); | |
| 1844 | |
| 1544 | 1845 /* |
| 1846 * If newvd is smaller than oldvd, but larger than its rsize, | |
| 1847 * the addition of newvd may have decreased our parent's asize. | |
| 1848 */ | |
| 1849 pvd->vdev_asize = MIN(pvd->vdev_asize, newvd->vdev_asize); | |
| 1850 | |
| 789 | 1851 tvd = newvd->vdev_top; |
| 1852 ASSERT(pvd->vdev_top == tvd); | |
| 1853 ASSERT(tvd->vdev_parent == rvd); | |
| 1854 | |
| 1855 vdev_config_dirty(tvd); | |
| 1856 | |
| 1857 /* | |
| 1858 * Set newvd's DTL to [TXG_INITIAL, open_txg]. It will propagate | |
| 1859 * upward when spa_vdev_exit() calls vdev_dtl_reassess(). | |
| 1860 */ | |
| 1861 open_txg = txg + TXG_CONCURRENT_STATES - 1; | |
| 1862 | |
| 1863 mutex_enter(&newvd->vdev_dtl_lock); | |
| 1864 space_map_add(&newvd->vdev_dtl_map, TXG_INITIAL, | |
| 1865 open_txg - TXG_INITIAL + 1); | |
| 1866 mutex_exit(&newvd->vdev_dtl_lock); | |
| 1867 | |
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1868 if (newvd->vdev_isspare) |
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1869 spa_spare_activate(newvd); |
| 1544 | 1870 |
| 789 | 1871 /* |
| 1872 * Mark newvd's DTL dirty in this txg. | |
| 1873 */ | |
| 1732 | 1874 vdev_dirty(tvd, VDD_DTL, newvd, txg); |
| 789 | 1875 |
| 1876 (void) spa_vdev_exit(spa, newrootvd, open_txg, 0); | |
| 1877 | |
| 1878 /* | |
| 4451 | 1879 * Kick off a resilver to update newvd. We need to grab the namespace |
| 1880 * lock because spa_scrub() needs to post a sysevent with the pool name. | |
| 789 | 1881 */ |
| 4451 | 1882 mutex_enter(&spa_namespace_lock); |
| 789 | 1883 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); |
| 4451 | 1884 mutex_exit(&spa_namespace_lock); |
| 789 | 1885 |
| 1886 return (0); | |
| 1887 } | |
| 1888 | |
| 1889 /* | |
| 1890 * Detach a device from a mirror or replacing vdev. | |
| 1891 * If 'replace_done' is specified, only detach if the parent | |
| 1892 * is a replacing vdev. | |
| 1893 */ | |
| 1894 int | |
| 1544 | 1895 spa_vdev_detach(spa_t *spa, uint64_t guid, int replace_done) |
| 789 | 1896 { |
| 1897 uint64_t txg; | |
| 1898 int c, t, error; | |
| 1899 vdev_t *rvd = spa->spa_root_vdev; | |
| 1900 vdev_t *vd, *pvd, *cvd, *tvd; | |
| 2082 | 1901 boolean_t unspare = B_FALSE; |
| 1902 uint64_t unspare_guid; | |
| 789 | 1903 |
| 1904 txg = spa_vdev_enter(spa); | |
| 1905 | |
| 1544 | 1906 vd = vdev_lookup_by_guid(rvd, guid); |
| 789 | 1907 |
| 1908 if (vd == NULL) | |
| 1909 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
| 1910 | |
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1911 if (!vd->vdev_ops->vdev_op_leaf) |
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1912 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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1913 |
| 789 | 1914 pvd = vd->vdev_parent; |
| 1915 | |
| 1916 /* | |
| 1917 * If replace_done is specified, only remove this device if it's | |
| 2082 | 1918 * the first child of a replacing vdev. For the 'spare' vdev, either |
| 1919 * disk can be removed. | |
| 789 | 1920 */ |
| 2082 | 1921 if (replace_done) { |
| 1922 if (pvd->vdev_ops == &vdev_replacing_ops) { | |
| 1923 if (vd->vdev_id != 0) | |
| 1924 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
| 1925 } else if (pvd->vdev_ops != &vdev_spare_ops) { | |
| 1926 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
| 1927 } | |
| 1928 } | |
| 1929 | |
| 1930 ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
| 1931 spa_version(spa) >= ZFS_VERSION_SPARES); | |
| 789 | 1932 |
| 1933 /* | |
| 2082 | 1934 * Only mirror, replacing, and spare vdevs support detach. |
| 789 | 1935 */ |
| 1936 if (pvd->vdev_ops != &vdev_replacing_ops && | |
| 2082 | 1937 pvd->vdev_ops != &vdev_mirror_ops && |
| 1938 pvd->vdev_ops != &vdev_spare_ops) | |
| 789 | 1939 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
| 1940 | |
| 1941 /* | |
| 1942 * If there's only one replica, you can't detach it. | |
| 1943 */ | |
| 1944 if (pvd->vdev_children <= 1) | |
| 1945 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
| 1946 | |
| 1947 /* | |
| 1948 * If all siblings have non-empty DTLs, this device may have the only | |
| 1949 * valid copy of the data, which means we cannot safely detach it. | |
| 1950 * | |
| 1951 * XXX -- as in the vdev_offline() case, we really want a more | |
| 1952 * precise DTL check. | |
| 1953 */ | |
| 1954 for (c = 0; c < pvd->vdev_children; c++) { | |
| 1955 uint64_t dirty; | |
| 1956 | |
| 1957 cvd = pvd->vdev_child[c]; | |
| 1958 if (cvd == vd) | |
| 1959 continue; | |
| 1960 if (vdev_is_dead(cvd)) | |
| 1961 continue; | |
| 1962 mutex_enter(&cvd->vdev_dtl_lock); | |
| 1963 dirty = cvd->vdev_dtl_map.sm_space | | |
| 1964 cvd->vdev_dtl_scrub.sm_space; | |
| 1965 mutex_exit(&cvd->vdev_dtl_lock); | |
| 1966 if (!dirty) | |
| 1967 break; | |
| 1968 } | |
| 2082 | 1969 |
| 1970 /* | |
| 1971 * If we are a replacing or spare vdev, then we can always detach the | |
| 1972 * latter child, as that is how one cancels the operation. | |
| 1973 */ | |
| 1974 if ((pvd->vdev_ops == &vdev_mirror_ops || vd->vdev_id != 1) && | |
| 1975 c == pvd->vdev_children) | |
| 789 | 1976 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
| 1977 | |
| 1978 /* | |
| 2082 | 1979 * If we are detaching the original disk from a spare, then it implies |
| 1980 * that the spare should become a real disk, and be removed from the | |
| 1981 * active spare list for the pool. | |
| 1982 */ | |
| 1983 if (pvd->vdev_ops == &vdev_spare_ops && | |
| 1984 vd->vdev_id == 0) | |
| 1985 unspare = B_TRUE; | |
| 1986 | |
| 1987 /* | |
| 789 | 1988 * Erase the disk labels so the disk can be used for other things. |
| 1989 * This must be done after all other error cases are handled, | |
| 1990 * but before we disembowel vd (so we can still do I/O to it). | |
| 1991 * But if we can't do it, don't treat the error as fatal -- | |
| 1992 * it may be that the unwritability of the disk is the reason | |
| 1993 * it's being detached! | |
| 1994 */ | |
|
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1995 error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); |
| 789 | 1996 |
| 1997 /* | |
| 1998 * Remove vd from its parent and compact the parent's children. | |
| 1999 */ | |
| 2000 vdev_remove_child(pvd, vd); | |
| 2001 vdev_compact_children(pvd); | |
| 2002 | |
| 2003 /* | |
| 2004 * Remember one of the remaining children so we can get tvd below. | |
| 2005 */ | |
| 2006 cvd = pvd->vdev_child[0]; | |
| 2007 | |
| 2008 /* | |
| 2082 | 2009 * If we need to remove the remaining child from the list of hot spares, |
| 2010 * do it now, marking the vdev as no longer a spare in the process. We | |
| 2011 * must do this before vdev_remove_parent(), because that can change the | |
| 2012 * GUID if it creates a new toplevel GUID. | |
| 2013 */ | |
| 2014 if (unspare) { | |
| 2015 ASSERT(cvd->vdev_isspare); | |
|
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2016 spa_spare_remove(cvd); |
| 2082 | 2017 unspare_guid = cvd->vdev_guid; |
| 2018 } | |
| 2019 | |
| 2020 /* | |
| 789 | 2021 * If the parent mirror/replacing vdev only has one child, |
| 2022 * the parent is no longer needed. Remove it from the tree. | |
| 2023 */ | |
| 2024 if (pvd->vdev_children == 1) | |
| 2025 vdev_remove_parent(cvd); | |
| 2026 | |
| 2027 /* | |
| 2028 * We don't set tvd until now because the parent we just removed | |
| 2029 * may have been the previous top-level vdev. | |
| 2030 */ | |
| 2031 tvd = cvd->vdev_top; | |
| 2032 ASSERT(tvd->vdev_parent == rvd); | |
| 2033 | |
| 2034 /* | |
|
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2035 * Reevaluate the parent vdev state. |
| 789 | 2036 */ |
| 4451 | 2037 vdev_propagate_state(cvd); |
| 789 | 2038 |
| 2039 /* | |
|
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2040 * If the device we just detached was smaller than the others, it may be |
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2041 * possible to add metaslabs (i.e. grow the pool). vdev_metaslab_init() |
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2042 * can't fail because the existing metaslabs are already in core, so |
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2043 * there's nothing to read from disk. |
| 789 | 2044 */ |
| 1732 | 2045 VERIFY(vdev_metaslab_init(tvd, txg) == 0); |
| 789 | 2046 |
| 2047 vdev_config_dirty(tvd); | |
| 2048 | |
| 2049 /* | |
|
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2050 * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that |
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2051 * vd->vdev_detached is set and free vd's DTL object in syncing context. |
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2052 * But first make sure we're not on any *other* txg's DTL list, to |
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2053 * prevent vd from being accessed after it's freed. |
| 789 | 2054 */ |
| 2055 for (t = 0; t < TXG_SIZE; t++) | |
| 2056 (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); | |
| 1732 | 2057 vd->vdev_detached = B_TRUE; |
| 2058 vdev_dirty(tvd, VDD_DTL, vd, txg); | |
| 789 | 2059 |
| 4451 | 2060 spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE); |
| 2061 | |
| 2082 | 2062 error = spa_vdev_exit(spa, vd, txg, 0); |
| 2063 | |
| 2064 /* | |
|
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2065 * If this was the removal of the original device in a hot spare vdev, |
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2066 * then we want to go through and remove the device from the hot spare |
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2067 * list of every other pool. |
| 2082 | 2068 */ |
| 2069 if (unspare) { | |
| 2070 spa = NULL; | |
| 2071 mutex_enter(&spa_namespace_lock); | |
| 2072 while ((spa = spa_next(spa)) != NULL) { | |
| 2073 if (spa->spa_state != POOL_STATE_ACTIVE) | |
| 2074 continue; | |
| 2075 | |
| 2076 (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); | |
| 2077 } | |
| 2078 mutex_exit(&spa_namespace_lock); | |
| 2079 } | |
| 2080 | |
| 2081 return (error); | |
| 2082 } | |
| 2083 | |
| 2084 /* | |
| 2085 * Remove a device from the pool. Currently, this supports removing only hot | |
| 2086 * spares. | |
| 2087 */ | |
| 2088 int | |
| 2089 spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) | |
| 2090 { | |
| 2091 vdev_t *vd; | |
| 2092 nvlist_t **spares, *nv, **newspares; | |
| 2093 uint_t i, j, nspares; | |
| 2094 int ret = 0; | |
| 2095 | |
| 2096 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 2097 | |
| 2098 vd = spa_lookup_by_guid(spa, guid); | |
| 2099 | |
| 2100 nv = NULL; | |
| 2101 if (spa->spa_spares != NULL && | |
| 2102 nvlist_lookup_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 2103 &spares, &nspares) == 0) { | |
| 2104 for (i = 0; i < nspares; i++) { | |
| 2105 uint64_t theguid; | |
| 2106 | |
| 2107 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 2108 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
| 2109 if (theguid == guid) { | |
| 2110 nv = spares[i]; | |
| 2111 break; | |
| 2112 } | |
| 2113 } | |
| 2114 } | |
| 2115 | |
| 2116 /* | |
| 2117 * We only support removing a hot spare, and only if it's not currently | |
| 2118 * in use in this pool. | |
| 2119 */ | |
| 2120 if (nv == NULL && vd == NULL) { | |
| 2121 ret = ENOENT; | |
| 2122 goto out; | |
| 2123 } | |
| 2124 | |
| 2125 if (nv == NULL && vd != NULL) { | |
| 2126 ret = ENOTSUP; | |
| 2127 goto out; | |
| 2128 } | |
| 2129 | |
| 2130 if (!unspare && nv != NULL && vd != NULL) { | |
| 2131 ret = EBUSY; | |
| 2132 goto out; | |
| 2133 } | |
| 2134 | |
| 2135 if (nspares == 1) { | |
| 2136 newspares = NULL; | |
| 2137 } else { | |
| 2138 newspares = kmem_alloc((nspares - 1) * sizeof (void *), | |
| 2139 KM_SLEEP); | |
| 2140 for (i = 0, j = 0; i < nspares; i++) { | |
| 2141 if (spares[i] != nv) | |
| 2142 VERIFY(nvlist_dup(spares[i], | |
| 2143 &newspares[j++], KM_SLEEP) == 0); | |
| 2144 } | |
| 2145 } | |
| 2146 | |
| 2147 VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 2148 DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 2149 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 2150 newspares, nspares - 1) == 0); | |
| 2151 for (i = 0; i < nspares - 1; i++) | |
| 2152 nvlist_free(newspares[i]); | |
| 2153 kmem_free(newspares, (nspares - 1) * sizeof (void *)); | |
| 2154 spa_load_spares(spa); | |
| 2155 spa->spa_sync_spares = B_TRUE; | |
| 2156 | |
| 2157 out: | |
| 2158 spa_config_exit(spa, FTAG); | |
| 2159 | |
| 2160 return (ret); | |
| 789 | 2161 } |
| 2162 | |
| 2163 /* | |
| 4451 | 2164 * Find any device that's done replacing, or a vdev marked 'unspare' that's |
| 2165 * current spared, so we can detach it. | |
| 789 | 2166 */ |
| 1544 | 2167 static vdev_t * |
| 4451 | 2168 spa_vdev_resilver_done_hunt(vdev_t *vd) |
| 789 | 2169 { |
| 1544 | 2170 vdev_t *newvd, *oldvd; |
| 789 | 2171 int c; |
| 2172 | |
| 1544 | 2173 for (c = 0; c < vd->vdev_children; c++) { |
| 4451 | 2174 oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); |
| 1544 | 2175 if (oldvd != NULL) |
| 2176 return (oldvd); | |
| 2177 } | |
| 789 | 2178 |
| 4451 | 2179 /* |
| 2180 * Check for a completed replacement. | |
| 2181 */ | |
| 789 | 2182 if (vd->vdev_ops == &vdev_replacing_ops && vd->vdev_children == 2) { |
| 1544 | 2183 oldvd = vd->vdev_child[0]; |
| 2184 newvd = vd->vdev_child[1]; | |
| 789 | 2185 |
| 1544 | 2186 mutex_enter(&newvd->vdev_dtl_lock); |
| 2187 if (newvd->vdev_dtl_map.sm_space == 0 && | |
| 2188 newvd->vdev_dtl_scrub.sm_space == 0) { | |
| 2189 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2190 return (oldvd); | |
| 2191 } | |
| 2192 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2193 } | |
| 789 | 2194 |
| 4451 | 2195 /* |
| 2196 * Check for a completed resilver with the 'unspare' flag set. | |
| 2197 */ | |
| 2198 if (vd->vdev_ops == &vdev_spare_ops && vd->vdev_children == 2) { | |
| 2199 newvd = vd->vdev_child[0]; | |
| 2200 oldvd = vd->vdev_child[1]; | |
| 2201 | |
| 2202 mutex_enter(&newvd->vdev_dtl_lock); | |
| 2203 if (newvd->vdev_unspare && | |
| 2204 newvd->vdev_dtl_map.sm_space == 0 && | |
| 2205 newvd->vdev_dtl_scrub.sm_space == 0) { | |
| 2206 newvd->vdev_unspare = 0; | |
| 2207 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2208 return (oldvd); | |
| 2209 } | |
| 2210 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2211 } | |
| 2212 | |
| 1544 | 2213 return (NULL); |
| 789 | 2214 } |
| 2215 | |
| 1544 | 2216 static void |
| 4451 | 2217 spa_vdev_resilver_done(spa_t *spa) |
| 789 | 2218 { |
| 1544 | 2219 vdev_t *vd; |
| 2082 | 2220 vdev_t *pvd; |
| 1544 | 2221 uint64_t guid; |
| 2082 | 2222 uint64_t pguid = 0; |
| 789 | 2223 |
| 1544 | 2224 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2225 |
| 4451 | 2226 while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { |
| 1544 | 2227 guid = vd->vdev_guid; |
| 2082 | 2228 /* |
| 2229 * If we have just finished replacing a hot spared device, then | |
| 2230 * we need to detach the parent's first child (the original hot | |
| 2231 * spare) as well. | |
| 2232 */ | |
| 2233 pvd = vd->vdev_parent; | |
| 2234 if (pvd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
| 2235 pvd->vdev_id == 0) { | |
| 2236 ASSERT(pvd->vdev_ops == &vdev_replacing_ops); | |
| 2237 ASSERT(pvd->vdev_parent->vdev_children == 2); | |
| 2238 pguid = pvd->vdev_parent->vdev_child[1]->vdev_guid; | |
| 2239 } | |
| 1544 | 2240 spa_config_exit(spa, FTAG); |
| 2241 if (spa_vdev_detach(spa, guid, B_TRUE) != 0) | |
| 2242 return; | |
| 2082 | 2243 if (pguid != 0 && spa_vdev_detach(spa, pguid, B_TRUE) != 0) |
| 2244 return; | |
| 1544 | 2245 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2246 } |
| 2247 | |
| 1544 | 2248 spa_config_exit(spa, FTAG); |
| 789 | 2249 } |
| 2250 | |
| 2251 /* | |
|
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2252 * Update the stored path for this vdev. Dirty the vdev configuration, relying |
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2253 * on spa_vdev_enter/exit() to synchronize the labels and cache. |
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2254 */ |
|
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2255 int |
|
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2256 spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) |
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2257 { |
|
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2258 vdev_t *rvd, *vd; |
|
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2259 uint64_t txg; |
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2260 |
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2261 rvd = spa->spa_root_vdev; |
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2262 |
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2263 txg = spa_vdev_enter(spa); |
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2264 |
| 2082 | 2265 if ((vd = vdev_lookup_by_guid(rvd, guid)) == NULL) { |
| 2266 /* | |
| 2267 * Determine if this is a reference to a hot spare. In that | |
| 2268 * case, update the path as stored in the spare list. | |
| 2269 */ | |
| 2270 nvlist_t **spares; | |
| 2271 uint_t i, nspares; | |
| 2272 if (spa->spa_sparelist != NULL) { | |
| 2273 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 2274 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 2275 for (i = 0; i < nspares; i++) { | |
| 2276 uint64_t theguid; | |
| 2277 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 2278 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
| 2279 if (theguid == guid) | |
| 2280 break; | |
| 2281 } | |
| 2282 | |
| 2283 if (i == nspares) | |
| 2284 return (spa_vdev_exit(spa, NULL, txg, ENOENT)); | |
| 2285 | |
| 2286 VERIFY(nvlist_add_string(spares[i], | |
| 2287 ZPOOL_CONFIG_PATH, newpath) == 0); | |
| 2288 spa_load_spares(spa); | |
| 2289 spa->spa_sync_spares = B_TRUE; | |
| 2290 return (spa_vdev_exit(spa, NULL, txg, 0)); | |
| 2291 } else { | |
| 2292 return (spa_vdev_exit(spa, NULL, txg, ENOENT)); | |
| 2293 } | |
| 2294 } | |
|
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2295 |
|
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2296 if (!vd->vdev_ops->vdev_op_leaf) |
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2297 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
|
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2298 |
|
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2299 spa_strfree(vd->vdev_path); |
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2300 vd->vdev_path = spa_strdup(newpath); |
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2301 |
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2302 vdev_config_dirty(vd->vdev_top); |
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2303 |
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2304 return (spa_vdev_exit(spa, NULL, txg, 0)); |
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2305 } |
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2306 |
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2307 /* |
| 789 | 2308 * ========================================================================== |
| 2309 * SPA Scrubbing | |
| 2310 * ========================================================================== | |
| 2311 */ | |
| 2312 | |
| 2313 static void | |
| 2314 spa_scrub_io_done(zio_t *zio) | |
| 2315 { | |
| 2316 spa_t *spa = zio->io_spa; | |
| 2317 | |
|
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2318 arc_data_buf_free(zio->io_data, zio->io_size); |
| 789 | 2319 |
| 2320 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2321 if (zio->io_error && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { |
|
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2322 vdev_t *vd = zio->io_vd ? zio->io_vd : spa->spa_root_vdev; |
| 789 | 2323 spa->spa_scrub_errors++; |
| 2324 mutex_enter(&vd->vdev_stat_lock); | |
| 2325 vd->vdev_stat.vs_scrub_errors++; | |
| 2326 mutex_exit(&vd->vdev_stat_lock); | |
| 2327 } | |
|
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2328 |
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2329 if (--spa->spa_scrub_inflight < spa->spa_scrub_maxinflight) |
| 1544 | 2330 cv_broadcast(&spa->spa_scrub_io_cv); |
|
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2331 |
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2332 ASSERT(spa->spa_scrub_inflight >= 0); |
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2333 |
| 1544 | 2334 mutex_exit(&spa->spa_scrub_lock); |
| 789 | 2335 } |
| 2336 | |
| 2337 static void | |
| 1544 | 2338 spa_scrub_io_start(spa_t *spa, blkptr_t *bp, int priority, int flags, |
| 2339 zbookmark_t *zb) | |
| 789 | 2340 { |
| 2341 size_t size = BP_GET_LSIZE(bp); | |
|
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2342 void *data; |
| 789 | 2343 |
| 2344 mutex_enter(&spa->spa_scrub_lock); | |
|
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2345 /* |
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2346 * Do not give too much work to vdev(s). |
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2347 */ |
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2348 while (spa->spa_scrub_inflight >= spa->spa_scrub_maxinflight) { |
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2349 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); |
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2350 } |
| 789 | 2351 spa->spa_scrub_inflight++; |
| 2352 mutex_exit(&spa->spa_scrub_lock); | |
| 2353 | |
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2354 data = arc_data_buf_alloc(size); |
|
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2355 |
| 1544 | 2356 if (zb->zb_level == -1 && BP_GET_TYPE(bp) != DMU_OT_OBJSET) |
| 2357 flags |= ZIO_FLAG_SPECULATIVE; /* intent log block */ | |
| 2358 | |
|
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2359 flags |= ZIO_FLAG_SCRUB_THREAD | ZIO_FLAG_CANFAIL; |
| 1544 | 2360 |
| 789 | 2361 zio_nowait(zio_read(NULL, spa, bp, data, size, |
| 1544 | 2362 spa_scrub_io_done, NULL, priority, flags, zb)); |
| 789 | 2363 } |
| 2364 | |
| 2365 /* ARGSUSED */ | |
| 2366 static int | |
| 2367 spa_scrub_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) | |
| 2368 { | |
| 2369 blkptr_t *bp = &bc->bc_blkptr; | |
|
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2370 vdev_t *vd = spa->spa_root_vdev; |
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2371 dva_t *dva = bp->blk_dva; |
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2372 int needs_resilver = B_FALSE; |
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2373 int d; |
| 789 | 2374 |
|
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2375 if (bc->bc_errno) { |
| 789 | 2376 /* |
| 2377 * We can't scrub this block, but we can continue to scrub | |
| 2378 * the rest of the pool. Note the error and move along. | |
| 2379 */ | |
| 2380 mutex_enter(&spa->spa_scrub_lock); | |
| 2381 spa->spa_scrub_errors++; | |
| 2382 mutex_exit(&spa->spa_scrub_lock); | |
| 2383 | |
|
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2384 mutex_enter(&vd->vdev_stat_lock); |
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2385 vd->vdev_stat.vs_scrub_errors++; |
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2386 mutex_exit(&vd->vdev_stat_lock); |
| 789 | 2387 |
| 2388 return (ERESTART); | |
| 2389 } | |
| 2390 | |
| 2391 ASSERT(bp->blk_birth < spa->spa_scrub_maxtxg); | |
| 2392 | |
|
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2393 for (d = 0; d < BP_GET_NDVAS(bp); d++) { |
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2394 vd = vdev_lookup_top(spa, DVA_GET_VDEV(&dva[d])); |
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2395 |
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2396 ASSERT(vd != NULL); |
|
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2397 |
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2398 /* |
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2399 * Keep track of how much data we've examined so that |
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2400 * zpool(1M) status can make useful progress reports. |
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2401 */ |
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2402 mutex_enter(&vd->vdev_stat_lock); |
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2403 vd->vdev_stat.vs_scrub_examined += DVA_GET_ASIZE(&dva[d]); |
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2404 mutex_exit(&vd->vdev_stat_lock); |
| 789 | 2405 |
|
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2406 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER) { |
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2407 if (DVA_GET_GANG(&dva[d])) { |
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2408 /* |
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2409 * Gang members may be spread across multiple |
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2410 * vdevs, so the best we can do is look at the |
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2411 * pool-wide DTL. |
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2412 * XXX -- it would be better to change our |
|
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2413 * allocation policy to ensure that this can't |
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2414 * happen. |
|
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2415 */ |
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2416 vd = spa->spa_root_vdev; |
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2417 } |
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2418 if (vdev_dtl_contains(&vd->vdev_dtl_map, |
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2419 bp->blk_birth, 1)) |
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2420 needs_resilver = B_TRUE; |
| 789 | 2421 } |
|
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2422 } |
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2423 |
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2424 if (spa->spa_scrub_type == POOL_SCRUB_EVERYTHING) |
| 789 | 2425 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_SCRUB, |
| 1544 | 2426 ZIO_FLAG_SCRUB, &bc->bc_bookmark); |
|
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2427 else if (needs_resilver) |
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2428 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_RESILVER, |
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2429 ZIO_FLAG_RESILVER, &bc->bc_bookmark); |
| 789 | 2430 |
| 2431 return (0); | |
| 2432 } | |
| 2433 | |
| 2434 static void | |
| 2435 spa_scrub_thread(spa_t *spa) | |
| 2436 { | |
| 2437 callb_cpr_t cprinfo; | |
| 2438 traverse_handle_t *th = spa->spa_scrub_th; | |
| 2439 vdev_t *rvd = spa->spa_root_vdev; | |
| 2440 pool_scrub_type_t scrub_type = spa->spa_scrub_type; | |
| 2441 int error = 0; | |
| 2442 boolean_t complete; | |
| 2443 | |
| 2444 CALLB_CPR_INIT(&cprinfo, &spa->spa_scrub_lock, callb_generic_cpr, FTAG); | |
| 2445 | |
|
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2446 /* |
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2447 * If we're restarting due to a snapshot create/delete, |
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2448 * wait for that to complete. |
|
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2449 */ |
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2450 txg_wait_synced(spa_get_dsl(spa), 0); |
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2451 |
| 1544 | 2452 dprintf("start %s mintxg=%llu maxtxg=%llu\n", |
| 2453 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
| 2454 spa->spa_scrub_mintxg, spa->spa_scrub_maxtxg); | |
| 2455 | |
| 2456 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 2457 vdev_reopen(rvd); /* purge all vdev caches */ | |
| 789 | 2458 vdev_config_dirty(rvd); /* rewrite all disk labels */ |
| 2459 vdev_scrub_stat_update(rvd, scrub_type, B_FALSE); | |
| 1544 | 2460 spa_config_exit(spa, FTAG); |
| 789 | 2461 |
| 2462 mutex_enter(&spa->spa_scrub_lock); | |
| 2463 spa->spa_scrub_errors = 0; | |
| 2464 spa->spa_scrub_active = 1; | |
| 1544 | 2465 ASSERT(spa->spa_scrub_inflight == 0); |
| 789 | 2466 |
| 2467 while (!spa->spa_scrub_stop) { | |
| 2468 CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
| 1544 | 2469 while (spa->spa_scrub_suspended) { |
| 789 | 2470 spa->spa_scrub_active = 0; |
| 2471 cv_broadcast(&spa->spa_scrub_cv); | |
| 2472 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2473 spa->spa_scrub_active = 1; | |
| 2474 } | |
| 2475 CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_scrub_lock); | |
| 2476 | |
| 2477 if (spa->spa_scrub_restart_txg != 0) | |
| 2478 break; | |
| 2479 | |
| 2480 mutex_exit(&spa->spa_scrub_lock); | |
| 2481 error = traverse_more(th); | |
| 2482 mutex_enter(&spa->spa_scrub_lock); | |
| 2483 if (error != EAGAIN) | |
| 2484 break; | |
| 2485 } | |
| 2486 | |
| 2487 while (spa->spa_scrub_inflight) | |
| 2488 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 2489 | |
|
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2490 spa->spa_scrub_active = 0; |
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2491 cv_broadcast(&spa->spa_scrub_cv); |
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2492 |
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2493 mutex_exit(&spa->spa_scrub_lock); |
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2494 |
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2495 spa_config_enter(spa, RW_WRITER, FTAG); |
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2496 |
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2497 mutex_enter(&spa->spa_scrub_lock); |
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2498 |
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2499 /* |
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2500 * Note: we check spa_scrub_restart_txg under both spa_scrub_lock |
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2501 * AND the spa config lock to synchronize with any config changes |
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2502 * that revise the DTLs under spa_vdev_enter() / spa_vdev_exit(). |
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2503 */ |
| 789 | 2504 if (spa->spa_scrub_restart_txg != 0) |
| 2505 error = ERESTART; | |
| 2506 | |
| 1544 | 2507 if (spa->spa_scrub_stop) |
| 2508 error = EINTR; | |
| 2509 | |
| 789 | 2510 /* |
| 1544 | 2511 * Even if there were uncorrectable errors, we consider the scrub |
| 2512 * completed. The downside is that if there is a transient error during | |
| 2513 * a resilver, we won't resilver the data properly to the target. But | |
| 2514 * if the damage is permanent (more likely) we will resilver forever, | |
| 2515 * which isn't really acceptable. Since there is enough information for | |
| 2516 * the user to know what has failed and why, this seems like a more | |
| 2517 * tractable approach. | |
| 789 | 2518 */ |
| 1544 | 2519 complete = (error == 0); |
| 789 | 2520 |
| 1544 | 2521 dprintf("end %s to maxtxg=%llu %s, traverse=%d, %llu errors, stop=%u\n", |
| 2522 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
| 789 | 2523 spa->spa_scrub_maxtxg, complete ? "done" : "FAILED", |
| 2524 error, spa->spa_scrub_errors, spa->spa_scrub_stop); | |
| 2525 | |
| 2526 mutex_exit(&spa->spa_scrub_lock); | |
| 2527 | |
| 2528 /* | |
| 2529 * If the scrub/resilver completed, update all DTLs to reflect this. | |
| 2530 * Whether it succeeded or not, vacate all temporary scrub DTLs. | |
| 2531 */ | |
| 2532 vdev_dtl_reassess(rvd, spa_last_synced_txg(spa) + 1, | |
| 2533 complete ? spa->spa_scrub_maxtxg : 0, B_TRUE); | |
| 2534 vdev_scrub_stat_update(rvd, POOL_SCRUB_NONE, complete); | |
| 1544 | 2535 spa_errlog_rotate(spa); |
|
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2536 |
| 4451 | 2537 if (scrub_type == POOL_SCRUB_RESILVER && complete) |
| 2538 spa_event_notify(spa, NULL, ESC_ZFS_RESILVER_FINISH); | |
| 2539 | |
| 1544 | 2540 spa_config_exit(spa, FTAG); |
| 789 | 2541 |
| 2542 mutex_enter(&spa->spa_scrub_lock); | |
| 2543 | |
| 1544 | 2544 /* |
| 2545 * We may have finished replacing a device. | |
| 2546 * Let the async thread assess this and handle the detach. | |
| 2547 */ | |
| 4451 | 2548 spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); |
| 789 | 2549 |
| 2550 /* | |
| 2551 * If we were told to restart, our final act is to start a new scrub. | |
| 2552 */ | |
| 2553 if (error == ERESTART) | |
| 1544 | 2554 spa_async_request(spa, scrub_type == POOL_SCRUB_RESILVER ? |
| 2555 SPA_ASYNC_RESILVER : SPA_ASYNC_SCRUB); | |
| 789 | 2556 |
| 1544 | 2557 spa->spa_scrub_type = POOL_SCRUB_NONE; |
| 2558 spa->spa_scrub_active = 0; | |
| 2559 spa->spa_scrub_thread = NULL; | |
| 2560 cv_broadcast(&spa->spa_scrub_cv); | |
| 789 | 2561 CALLB_CPR_EXIT(&cprinfo); /* drops &spa->spa_scrub_lock */ |
| 2562 thread_exit(); | |
| 2563 } | |
| 2564 | |
| 2565 void | |
| 2566 spa_scrub_suspend(spa_t *spa) | |
| 2567 { | |
| 2568 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2569 spa->spa_scrub_suspended++; |
| 789 | 2570 while (spa->spa_scrub_active) { |
| 2571 cv_broadcast(&spa->spa_scrub_cv); | |
| 2572 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2573 } | |
| 2574 while (spa->spa_scrub_inflight) | |
| 2575 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 2576 mutex_exit(&spa->spa_scrub_lock); | |
| 2577 } | |
| 2578 | |
| 2579 void | |
| 2580 spa_scrub_resume(spa_t *spa) | |
| 2581 { | |
| 2582 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2583 ASSERT(spa->spa_scrub_suspended != 0); |
| 2584 if (--spa->spa_scrub_suspended == 0) | |
| 789 | 2585 cv_broadcast(&spa->spa_scrub_cv); |
| 2586 mutex_exit(&spa->spa_scrub_lock); | |
| 2587 } | |
| 2588 | |
| 2589 void | |
| 2590 spa_scrub_restart(spa_t *spa, uint64_t txg) | |
| 2591 { | |
| 2592 /* | |
| 2593 * Something happened (e.g. snapshot create/delete) that means | |
| 2594 * we must restart any in-progress scrubs. The itinerary will | |
| 2595 * fix this properly. | |
| 2596 */ | |
| 2597 mutex_enter(&spa->spa_scrub_lock); | |
| 2598 spa->spa_scrub_restart_txg = txg; | |
| 2599 mutex_exit(&spa->spa_scrub_lock); | |
| 2600 } | |
| 2601 | |
| 1544 | 2602 int |
| 2603 spa_scrub(spa_t *spa, pool_scrub_type_t type, boolean_t force) | |
| 789 | 2604 { |
| 2605 space_seg_t *ss; | |
| 2606 uint64_t mintxg, maxtxg; | |
| 2607 vdev_t *rvd = spa->spa_root_vdev; | |
| 2608 | |
| 2609 if ((uint_t)type >= POOL_SCRUB_TYPES) | |
| 2610 return (ENOTSUP); | |
| 2611 | |
| 1544 | 2612 mutex_enter(&spa->spa_scrub_lock); |
| 2613 | |
| 789 | 2614 /* |
| 2615 * If there's a scrub or resilver already in progress, stop it. | |
| 2616 */ | |
| 2617 while (spa->spa_scrub_thread != NULL) { | |
| 2618 /* | |
| 2619 * Don't stop a resilver unless forced. | |
| 2620 */ | |
| 1544 | 2621 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER && !force) { |
| 2622 mutex_exit(&spa->spa_scrub_lock); | |
| 789 | 2623 return (EBUSY); |
| 1544 | 2624 } |
| 789 | 2625 spa->spa_scrub_stop = 1; |
| 2626 cv_broadcast(&spa->spa_scrub_cv); | |
| 2627 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2628 } | |
| 2629 | |
| 2630 /* | |
| 2631 * Terminate the previous traverse. | |
| 2632 */ | |
| 2633 if (spa->spa_scrub_th != NULL) { | |
| 2634 traverse_fini(spa->spa_scrub_th); | |
| 2635 spa->spa_scrub_th = NULL; | |
| 2636 } | |
| 2637 | |
| 1544 | 2638 if (rvd == NULL) { |
| 2639 ASSERT(spa->spa_scrub_stop == 0); | |
| 2640 ASSERT(spa->spa_scrub_type == type); | |
| 2641 ASSERT(spa->spa_scrub_restart_txg == 0); | |
| 2642 mutex_exit(&spa->spa_scrub_lock); | |
| 2643 return (0); | |
| 2644 } | |
| 789 | 2645 |
| 2646 mintxg = TXG_INITIAL - 1; | |
| 2647 maxtxg = spa_last_synced_txg(spa) + 1; | |
| 2648 | |
| 1544 | 2649 mutex_enter(&rvd->vdev_dtl_lock); |
| 789 | 2650 |
| 1544 | 2651 if (rvd->vdev_dtl_map.sm_space == 0) { |
| 2652 /* | |
| 2653 * The pool-wide DTL is empty. | |
| 1732 | 2654 * If this is a resilver, there's nothing to do except |
| 2655 * check whether any in-progress replacements have completed. | |
| 1544 | 2656 */ |
| 1732 | 2657 if (type == POOL_SCRUB_RESILVER) { |
| 1544 | 2658 type = POOL_SCRUB_NONE; |
| 4451 | 2659 spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); |
| 1732 | 2660 } |
| 1544 | 2661 } else { |
| 2662 /* | |
| 2663 * The pool-wide DTL is non-empty. | |
| 2664 * If this is a normal scrub, upgrade to a resilver instead. | |
| 2665 */ | |
| 2666 if (type == POOL_SCRUB_EVERYTHING) | |
| 2667 type = POOL_SCRUB_RESILVER; | |
| 2668 } | |
| 789 | 2669 |
| 1544 | 2670 if (type == POOL_SCRUB_RESILVER) { |
| 789 | 2671 /* |
| 2672 * Determine the resilvering boundaries. | |
| 2673 * | |
| 2674 * Note: (mintxg, maxtxg) is an open interval, | |
| 2675 * i.e. mintxg and maxtxg themselves are not included. | |
| 2676 * | |
| 2677 * Note: for maxtxg, we MIN with spa_last_synced_txg(spa) + 1 | |
| 2678 * so we don't claim to resilver a txg that's still changing. | |
| 2679 */ | |
| 2680 ss = avl_first(&rvd->vdev_dtl_map.sm_root); | |
| 1544 | 2681 mintxg = ss->ss_start - 1; |
| 789 | 2682 ss = avl_last(&rvd->vdev_dtl_map.sm_root); |
| 1544 | 2683 maxtxg = MIN(ss->ss_end, maxtxg); |
| 4451 | 2684 |
| 2685 spa_event_notify(spa, NULL, ESC_ZFS_RESILVER_START); | |
| 789 | 2686 } |
| 2687 | |
| 1544 | 2688 mutex_exit(&rvd->vdev_dtl_lock); |
| 2689 | |
| 2690 spa->spa_scrub_stop = 0; | |
| 2691 spa->spa_scrub_type = type; | |
| 2692 spa->spa_scrub_restart_txg = 0; | |
| 2693 | |
| 2694 if (type != POOL_SCRUB_NONE) { | |
| 2695 spa->spa_scrub_mintxg = mintxg; | |
| 789 | 2696 spa->spa_scrub_maxtxg = maxtxg; |
| 2697 spa->spa_scrub_th = traverse_init(spa, spa_scrub_cb, NULL, | |
|
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2698 ADVANCE_PRE | ADVANCE_PRUNE | ADVANCE_ZIL, |
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2699 ZIO_FLAG_CANFAIL); |
| 789 | 2700 traverse_add_pool(spa->spa_scrub_th, mintxg, maxtxg); |
| 2701 spa->spa_scrub_thread = thread_create(NULL, 0, | |
| 2702 spa_scrub_thread, spa, 0, &p0, TS_RUN, minclsyspri); | |
| 2703 } | |
| 2704 | |
| 1544 | 2705 mutex_exit(&spa->spa_scrub_lock); |
| 2706 | |
| 789 | 2707 return (0); |
| 2708 } | |
| 2709 | |
| 1544 | 2710 /* |
| 2711 * ========================================================================== | |
| 2712 * SPA async task processing | |
| 2713 * ========================================================================== | |
| 2714 */ | |
| 2715 | |
| 2716 static void | |
| 4451 | 2717 spa_async_remove(spa_t *spa, vdev_t *vd) |
| 789 | 2718 { |
| 1544 | 2719 vdev_t *tvd; |
| 2720 int c; | |
| 2721 | |
| 4451 | 2722 for (c = 0; c < vd->vdev_children; c++) { |
| 2723 tvd = vd->vdev_child[c]; | |
| 2724 if (tvd->vdev_remove_wanted) { | |
| 2725 tvd->vdev_remove_wanted = 0; | |
| 2726 vdev_set_state(tvd, B_FALSE, VDEV_STATE_REMOVED, | |
| 2727 VDEV_AUX_NONE); | |
| 2728 vdev_clear(spa, tvd); | |
| 2729 vdev_config_dirty(tvd->vdev_top); | |
| 1544 | 2730 } |
| 4451 | 2731 spa_async_remove(spa, tvd); |
| 1544 | 2732 } |
| 2733 } | |
| 2734 | |
| 2735 static void | |
| 2736 spa_async_thread(spa_t *spa) | |
| 2737 { | |
| 2738 int tasks; | |
| 4451 | 2739 uint64_t txg; |
| 1544 | 2740 |
| 2741 ASSERT(spa->spa_sync_on); | |
| 789 | 2742 |
| 1544 | 2743 mutex_enter(&spa->spa_async_lock); |
| 2744 tasks = spa->spa_async_tasks; | |
| 2745 spa->spa_async_tasks = 0; | |
| 2746 mutex_exit(&spa->spa_async_lock); | |
| 2747 | |
| 2748 /* | |
|
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2749 * See if the config needs to be updated. |
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2750 */ |
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2751 if (tasks & SPA_ASYNC_CONFIG_UPDATE) { |
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2752 mutex_enter(&spa_namespace_lock); |
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2753 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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2754 mutex_exit(&spa_namespace_lock); |
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2755 } |
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2756 |
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2757 /* |
| 4451 | 2758 * See if any devices need to be marked REMOVED. |
| 1544 | 2759 */ |
| 4451 | 2760 if (tasks & SPA_ASYNC_REMOVE) { |
| 2761 txg = spa_vdev_enter(spa); | |
| 2762 spa_async_remove(spa, spa->spa_root_vdev); | |
| 2763 (void) spa_vdev_exit(spa, NULL, txg, 0); | |
| 2764 } | |
| 1544 | 2765 |
| 2766 /* | |
| 2767 * If any devices are done replacing, detach them. | |
| 2768 */ | |
| 4451 | 2769 if (tasks & SPA_ASYNC_RESILVER_DONE) |
| 2770 spa_vdev_resilver_done(spa); | |
| 789 | 2771 |
| 1544 | 2772 /* |
| 4451 | 2773 * Kick off a scrub. When starting a RESILVER scrub (or an EVERYTHING |
| 2774 * scrub which can become a resilver), we need to hold | |
| 2775 * spa_namespace_lock() because the sysevent we post via | |
| 2776 * spa_event_notify() needs to get the name of the pool. | |
| 1544 | 2777 */ |
| 4451 | 2778 if (tasks & SPA_ASYNC_SCRUB) { |
| 2779 mutex_enter(&spa_namespace_lock); | |
| 1544 | 2780 VERIFY(spa_scrub(spa, POOL_SCRUB_EVERYTHING, B_TRUE) == 0); |
| 4451 | 2781 mutex_exit(&spa_namespace_lock); |
| 2782 } | |
| 1544 | 2783 |
| 2784 /* | |
| 2785 * Kick off a resilver. | |
| 2786 */ | |
| 4451 | 2787 if (tasks & SPA_ASYNC_RESILVER) { |
| 2788 mutex_enter(&spa_namespace_lock); | |
| 1544 | 2789 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); |
| 4451 | 2790 mutex_exit(&spa_namespace_lock); |
| 2791 } | |
| 1544 | 2792 |
| 2793 /* | |
| 2794 * Let the world know that we're done. | |
| 2795 */ | |
| 2796 mutex_enter(&spa->spa_async_lock); | |
| 2797 spa->spa_async_thread = NULL; | |
| 2798 cv_broadcast(&spa->spa_async_cv); | |
| 2799 mutex_exit(&spa->spa_async_lock); | |
| 2800 thread_exit(); | |
| 2801 } | |
| 2802 | |
| 2803 void | |
| 2804 spa_async_suspend(spa_t *spa) | |
| 2805 { | |
| 2806 mutex_enter(&spa->spa_async_lock); | |
| 2807 spa->spa_async_suspended++; | |
| 2808 while (spa->spa_async_thread != NULL) | |
| 2809 cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); | |
| 2810 mutex_exit(&spa->spa_async_lock); | |
| 2811 } | |
| 2812 | |
| 2813 void | |
| 2814 spa_async_resume(spa_t *spa) | |
| 2815 { | |
| 2816 mutex_enter(&spa->spa_async_lock); | |
| 2817 ASSERT(spa->spa_async_suspended != 0); | |
| 2818 spa->spa_async_suspended--; | |
| 2819 mutex_exit(&spa->spa_async_lock); | |
| 2820 } | |
| 2821 | |
| 2822 static void | |
| 2823 spa_async_dispatch(spa_t *spa) | |
| 2824 { | |
| 2825 mutex_enter(&spa->spa_async_lock); | |
| 2826 if (spa->spa_async_tasks && !spa->spa_async_suspended && | |
|
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2827 spa->spa_async_thread == NULL && |
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2828 rootdir != NULL && !vn_is_readonly(rootdir)) |
| 1544 | 2829 spa->spa_async_thread = thread_create(NULL, 0, |
| 2830 spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
| 2831 mutex_exit(&spa->spa_async_lock); | |
| 2832 } | |
| 2833 | |
| 2834 void | |
| 2835 spa_async_request(spa_t *spa, int task) | |
| 2836 { | |
| 2837 mutex_enter(&spa->spa_async_lock); | |
| 2838 spa->spa_async_tasks |= task; | |
| 2839 mutex_exit(&spa->spa_async_lock); | |
| 789 | 2840 } |
| 2841 | |
| 2842 /* | |
| 2843 * ========================================================================== | |
| 2844 * SPA syncing routines | |
| 2845 * ========================================================================== | |
| 2846 */ | |
| 2847 | |
| 2848 static void | |
| 2849 spa_sync_deferred_frees(spa_t *spa, uint64_t txg) | |
| 2850 { | |
| 2851 bplist_t *bpl = &spa->spa_sync_bplist; | |
| 2852 dmu_tx_t *tx; | |
| 2853 blkptr_t blk; | |
| 2854 uint64_t itor = 0; | |
| 2855 zio_t *zio; | |
| 2856 int error; | |
| 2857 uint8_t c = 1; | |
| 2858 | |
| 2859 zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CONFIG_HELD); | |
| 2860 | |
| 2861 while (bplist_iterate(bpl, &itor, &blk) == 0) | |
| 2862 zio_nowait(zio_free(zio, spa, txg, &blk, NULL, NULL)); | |
| 2863 | |
| 2864 error = zio_wait(zio); | |
| 2865 ASSERT3U(error, ==, 0); | |
| 2866 | |
| 2867 tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); | |
| 2868 bplist_vacate(bpl, tx); | |
| 2869 | |
| 2870 /* | |
| 2871 * Pre-dirty the first block so we sync to convergence faster. | |
| 2872 * (Usually only the first block is needed.) | |
| 2873 */ | |
| 2874 dmu_write(spa->spa_meta_objset, spa->spa_sync_bplist_obj, 0, 1, &c, tx); | |
| 2875 dmu_tx_commit(tx); | |
| 2876 } | |
| 2877 | |
| 2878 static void | |
| 2082 | 2879 spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) |
| 2880 { | |
| 2881 char *packed = NULL; | |
| 2882 size_t nvsize = 0; | |
| 2883 dmu_buf_t *db; | |
| 2884 | |
| 2885 VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
| 2886 | |
| 2887 packed = kmem_alloc(nvsize, KM_SLEEP); | |
| 2888 | |
| 2889 VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
| 2890 KM_SLEEP) == 0); | |
| 2891 | |
| 2892 dmu_write(spa->spa_meta_objset, obj, 0, nvsize, packed, tx); | |
| 2893 | |
| 2894 kmem_free(packed, nvsize); | |
| 2895 | |
| 2896 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
| 2897 dmu_buf_will_dirty(db, tx); | |
| 2898 *(uint64_t *)db->db_data = nvsize; | |
| 2899 dmu_buf_rele(db, FTAG); | |
| 2900 } | |
| 2901 | |
| 2902 static void | |
| 2903 spa_sync_spares(spa_t *spa, dmu_tx_t *tx) | |
| 2904 { | |
| 2905 nvlist_t *nvroot; | |
| 2906 nvlist_t **spares; | |
| 2907 int i; | |
| 2908 | |
| 2909 if (!spa->spa_sync_spares) | |
| 2910 return; | |
| 2911 | |
| 2912 /* | |
| 2913 * Update the MOS nvlist describing the list of available spares. | |
| 2914 * spa_validate_spares() will have already made sure this nvlist is | |
| 4451 | 2915 * valid and the vdevs are labeled appropriately. |
| 2082 | 2916 */ |
| 2917 if (spa->spa_spares_object == 0) { | |
| 2918 spa->spa_spares_object = dmu_object_alloc(spa->spa_meta_objset, | |
| 2919 DMU_OT_PACKED_NVLIST, 1 << 14, | |
| 2920 DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); | |
| 2921 VERIFY(zap_update(spa->spa_meta_objset, | |
| 2922 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SPARES, | |
| 2923 sizeof (uint64_t), 1, &spa->spa_spares_object, tx) == 0); | |
| 2924 } | |
| 2925 | |
| 2926 VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 2927 if (spa->spa_nspares == 0) { | |
| 2928 VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 2929 NULL, 0) == 0); | |
| 2930 } else { | |
| 2931 spares = kmem_alloc(spa->spa_nspares * sizeof (void *), | |
| 2932 KM_SLEEP); | |
| 2933 for (i = 0; i < spa->spa_nspares; i++) | |
| 2934 spares[i] = vdev_config_generate(spa, | |
| 2935 spa->spa_spares[i], B_FALSE, B_TRUE); | |
| 2936 VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 2937 spares, spa->spa_nspares) == 0); | |
| 2938 for (i = 0; i < spa->spa_nspares; i++) | |
| 2939 nvlist_free(spares[i]); | |
| 2940 kmem_free(spares, spa->spa_nspares * sizeof (void *)); | |
| 2941 } | |
| 2942 | |
| 2943 spa_sync_nvlist(spa, spa->spa_spares_object, nvroot, tx); | |
| 2926 | 2944 nvlist_free(nvroot); |
| 2082 | 2945 |
| 2946 spa->spa_sync_spares = B_FALSE; | |
| 2947 } | |
| 2948 | |
| 2949 static void | |
| 789 | 2950 spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) |
| 2951 { | |
| 2952 nvlist_t *config; | |
| 2953 | |
| 2954 if (list_is_empty(&spa->spa_dirty_list)) | |
| 2955 return; | |
| 2956 | |
| 2957 config = spa_config_generate(spa, NULL, dmu_tx_get_txg(tx), B_FALSE); | |
| 2958 | |
|
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2959 if (spa->spa_config_syncing) |
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2960 nvlist_free(spa->spa_config_syncing); |
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2961 spa->spa_config_syncing = config; |
| 789 | 2962 |
| 2082 | 2963 spa_sync_nvlist(spa, spa->spa_config_object, config, tx); |
| 789 | 2964 } |
| 2965 | |
| 3912 | 2966 static void |
| 4543 | 2967 spa_sync_props(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) |
| 3912 | 2968 { |
| 2969 spa_t *spa = arg1; | |
| 2970 nvlist_t *nvp = arg2; | |
| 2971 nvpair_t *nvpair; | |
| 2972 objset_t *mos = spa->spa_meta_objset; | |
| 2973 uint64_t zapobj; | |
| 4451 | 2974 uint64_t intval; |
| 3912 | 2975 |
| 2976 mutex_enter(&spa->spa_props_lock); | |
| 2977 if (spa->spa_pool_props_object == 0) { | |
| 2978 zapobj = zap_create(mos, DMU_OT_POOL_PROPS, DMU_OT_NONE, 0, tx); | |
| 2979 VERIFY(zapobj > 0); | |
| 2980 | |
| 2981 spa->spa_pool_props_object = zapobj; | |
| 2982 | |
| 2983 VERIFY(zap_update(mos, DMU_POOL_DIRECTORY_OBJECT, | |
| 2984 DMU_POOL_PROPS, 8, 1, | |
| 2985 &spa->spa_pool_props_object, tx) == 0); | |
| 2986 } | |
| 2987 mutex_exit(&spa->spa_props_lock); | |
| 2988 | |
| 2989 nvpair = NULL; | |
| 2990 while ((nvpair = nvlist_next_nvpair(nvp, nvpair))) { | |
| 2991 switch (zpool_name_to_prop(nvpair_name(nvpair))) { | |
| 4543 | 2992 case ZPOOL_PROP_DELEGATION: |
| 2993 VERIFY(nvlist_lookup_uint64(nvp, | |
| 2994 nvpair_name(nvpair), &intval) == 0); | |
| 2995 VERIFY(zap_update(mos, | |
| 2996 spa->spa_pool_props_object, | |
| 2997 nvpair_name(nvpair), 8, 1, | |
| 2998 &intval, tx) == 0); | |
| 2999 spa->spa_delegation = intval; | |
| 3000 break; | |
| 4451 | 3001 case ZPOOL_PROP_BOOTFS: |
| 3912 | 3002 VERIFY(nvlist_lookup_uint64(nvp, |
| 3003 nvpair_name(nvpair), &spa->spa_bootfs) == 0); | |
| 4543 | 3004 intval = spa->spa_bootfs; |
| 3912 | 3005 VERIFY(zap_update(mos, |
| 3006 spa->spa_pool_props_object, | |
| 4451 | 3007 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), 8, 1, |
| 4543 | 3008 &intval, tx) == 0); |
| 3912 | 3009 break; |
| 4451 | 3010 |
| 3011 case ZPOOL_PROP_AUTOREPLACE: | |
| 3012 VERIFY(nvlist_lookup_uint64(nvp, | |
| 3013 nvpair_name(nvpair), &intval) == 0); | |
| 3014 VERIFY(zap_update(mos, | |
| 3015 spa->spa_pool_props_object, | |
| 3016 zpool_prop_to_name(ZPOOL_PROP_AUTOREPLACE), 8, 1, | |
| 3017 &intval, tx) == 0); | |
| 3018 break; | |
| 3912 | 3019 } |
| 4543 | 3020 spa_history_internal_log(LOG_POOL_PROPSET, |
| 3021 spa, tx, cr, "%s %lld %s", | |
| 3022 nvpair_name(nvpair), intval, | |
| 3023 spa->spa_name); | |
| 3912 | 3024 } |
| 3025 } | |
| 3026 | |
| 789 | 3027 /* |
| 3028 * Sync the specified transaction group. New blocks may be dirtied as | |
| 3029 * part of the process, so we iterate until it converges. | |
| 3030 */ | |
| 3031 void | |
| 3032 spa_sync(spa_t *spa, uint64_t txg) | |
| 3033 { | |
| 3034 dsl_pool_t *dp = spa->spa_dsl_pool; | |
| 3035 objset_t *mos = spa->spa_meta_objset; | |
| 3036 bplist_t *bpl = &spa->spa_sync_bplist; | |
|
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3037 vdev_t *rvd = spa->spa_root_vdev; |
| 789 | 3038 vdev_t *vd; |
| 3039 dmu_tx_t *tx; | |
| 3040 int dirty_vdevs; | |
| 3041 | |
| 3042 /* | |
| 3043 * Lock out configuration changes. | |
| 3044 */ | |
| 1544 | 3045 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 3046 |
| 3047 spa->spa_syncing_txg = txg; | |
| 3048 spa->spa_sync_pass = 0; | |
| 3049 | |
| 1544 | 3050 VERIFY(0 == bplist_open(bpl, mos, spa->spa_sync_bplist_obj)); |
| 789 | 3051 |
| 2082 | 3052 tx = dmu_tx_create_assigned(dp, txg); |
| 3053 | |
| 3054 /* | |
| 3055 * If we are upgrading to ZFS_VERSION_RAIDZ_DEFLATE this txg, | |
| 3056 * set spa_deflate if we have no raid-z vdevs. | |
| 3057 */ | |
| 3058 if (spa->spa_ubsync.ub_version < ZFS_VERSION_RAIDZ_DEFLATE && | |
| 3059 spa->spa_uberblock.ub_version >= ZFS_VERSION_RAIDZ_DEFLATE) { | |
| 3060 int i; | |
| 3061 | |
| 3062 for (i = 0; i < rvd->vdev_children; i++) { | |
| 3063 vd = rvd->vdev_child[i]; | |
| 3064 if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
| 3065 break; | |
| 3066 } | |
| 3067 if (i == rvd->vdev_children) { | |
| 3068 spa->spa_deflate = TRUE; | |
| 3069 VERIFY(0 == zap_add(spa->spa_meta_objset, | |
| 3070 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 3071 sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
| 3072 } | |
| 3073 } | |
| 3074 | |
| 789 | 3075 /* |
| 3076 * If anything has changed in this txg, push the deferred frees | |
| 3077 * from the previous txg. If not, leave them alone so that we | |
| 3078 * don't generate work on an otherwise idle system. | |
| 3079 */ | |
| 3080 if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || | |
|
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3081 !txg_list_empty(&dp->dp_dirty_dirs, txg) || |
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3082 !txg_list_empty(&dp->dp_sync_tasks, txg)) |
| 789 | 3083 spa_sync_deferred_frees(spa, txg); |
| 3084 | |
| 3085 /* | |
| 3086 * Iterate to convergence. | |
| 3087 */ | |
| 3088 do { | |
| 3089 spa->spa_sync_pass++; | |
| 3090 | |
| 3091 spa_sync_config_object(spa, tx); | |
| 2082 | 3092 spa_sync_spares(spa, tx); |
| 1544 | 3093 spa_errlog_sync(spa, txg); |
| 789 | 3094 dsl_pool_sync(dp, txg); |
| 3095 | |
| 3096 dirty_vdevs = 0; | |
| 3097 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) { | |
| 3098 vdev_sync(vd, txg); | |
| 3099 dirty_vdevs++; | |
| 3100 } | |
| 3101 | |
| 3102 bplist_sync(bpl, tx); | |
| 3103 } while (dirty_vdevs); | |
| 3104 | |
| 3105 bplist_close(bpl); | |
| 3106 | |
| 3107 dprintf("txg %llu passes %d\n", txg, spa->spa_sync_pass); | |
| 3108 | |
| 3109 /* | |
| 3110 * Rewrite the vdev configuration (which includes the uberblock) | |
| 3111 * to commit the transaction group. | |
|
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3112 * |
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3113 * If there are any dirty vdevs, sync the uberblock to all vdevs. |
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3114 * Otherwise, pick a random top-level vdev that's known to be |
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3115 * visible in the config cache (see spa_vdev_add() for details). |
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|
3116 * If the write fails, try the next vdev until we're tried them all. |
| 789 | 3117 */ |
|
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3118 if (!list_is_empty(&spa->spa_dirty_list)) { |
|
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3119 VERIFY(vdev_config_sync(rvd, txg) == 0); |
|
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3120 } else { |
|
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|
3121 int children = rvd->vdev_children; |
|
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|
3122 int c0 = spa_get_random(children); |
|
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|
3123 int c; |
|
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|
3124 |
|
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|
3125 for (c = 0; c < children; c++) { |
|
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3126 vd = rvd->vdev_child[(c0 + c) % children]; |
|
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|
3127 if (vd->vdev_ms_array == 0) |
|
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|
3128 continue; |
|
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|
3129 if (vdev_config_sync(vd, txg) == 0) |
|
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|
3130 break; |
|
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|
3131 } |
|
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|
3132 if (c == children) |
|
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|
3133 VERIFY(vdev_config_sync(rvd, txg) == 0); |
|
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|
3134 } |
|
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|
3135 |
| 2082 | 3136 dmu_tx_commit(tx); |
| 3137 | |
|
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|
3138 /* |
|
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|
3139 * Clear the dirty config list. |
|
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|
3140 */ |
|
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|
3141 while ((vd = list_head(&spa->spa_dirty_list)) != NULL) |
|
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|
3142 vdev_config_clean(vd); |
|
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|
3143 |
|
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|
3144 /* |
|
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|
3145 * Now that the new config has synced transactionally, |
|
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|
3146 * let it become visible to the config cache. |
|
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|
3147 */ |
|
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|
3148 if (spa->spa_config_syncing != NULL) { |
|
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|
3149 spa_config_set(spa, spa->spa_config_syncing); |
|
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|
3150 spa->spa_config_txg = txg; |
|
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|
3151 spa->spa_config_syncing = NULL; |
|
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|
3152 } |
| 789 | 3153 |
| 3154 /* | |
| 3155 * Make a stable copy of the fully synced uberblock. | |
| 3156 * We use this as the root for pool traversals. | |
| 3157 */ | |
| 3158 spa->spa_traverse_wanted = 1; /* tells traverse_more() to stop */ | |
| 3159 | |
| 3160 spa_scrub_suspend(spa); /* stop scrubbing and finish I/Os */ | |
| 3161 | |
| 3162 rw_enter(&spa->spa_traverse_lock, RW_WRITER); | |
| 3163 spa->spa_traverse_wanted = 0; | |
| 3164 spa->spa_ubsync = spa->spa_uberblock; | |
| 3165 rw_exit(&spa->spa_traverse_lock); | |
| 3166 | |
| 3167 spa_scrub_resume(spa); /* resume scrub with new ubsync */ | |
| 3168 | |
| 3169 /* | |
| 3170 * Clean up the ZIL records for the synced txg. | |
| 3171 */ | |
| 3172 dsl_pool_zil_clean(dp); | |
| 3173 | |
| 3174 /* | |
| 3175 * Update usable space statistics. | |
| 3176 */ | |
| 3177 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg))) | |
| 3178 vdev_sync_done(vd, txg); | |
| 3179 | |
| 3180 /* | |
| 3181 * It had better be the case that we didn't dirty anything | |
| 2082 | 3182 * since vdev_config_sync(). |
| 789 | 3183 */ |
| 3184 ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
| 3185 ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
| 3186 ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
| 3187 ASSERT(bpl->bpl_queue == NULL); | |
| 3188 | |
| 1544 | 3189 spa_config_exit(spa, FTAG); |
| 3190 | |
| 3191 /* | |
| 3192 * If any async tasks have been requested, kick them off. | |
| 3193 */ | |
| 3194 spa_async_dispatch(spa); | |
| 789 | 3195 } |
| 3196 | |
| 3197 /* | |
| 3198 * Sync all pools. We don't want to hold the namespace lock across these | |
| 3199 * operations, so we take a reference on the spa_t and drop the lock during the | |
| 3200 * sync. | |
| 3201 */ | |
| 3202 void | |
| 3203 spa_sync_allpools(void) | |
| 3204 { | |
| 3205 spa_t *spa = NULL; | |
| 3206 mutex_enter(&spa_namespace_lock); | |
| 3207 while ((spa = spa_next(spa)) != NULL) { | |
| 3208 if (spa_state(spa) != POOL_STATE_ACTIVE) | |
| 3209 continue; | |
| 3210 spa_open_ref(spa, FTAG); | |
| 3211 mutex_exit(&spa_namespace_lock); | |
| 3212 txg_wait_synced(spa_get_dsl(spa), 0); | |
| 3213 mutex_enter(&spa_namespace_lock); | |
| 3214 spa_close(spa, FTAG); | |
| 3215 } | |
| 3216 mutex_exit(&spa_namespace_lock); | |
| 3217 } | |
| 3218 | |
| 3219 /* | |
| 3220 * ========================================================================== | |
| 3221 * Miscellaneous routines | |
| 3222 * ========================================================================== | |
| 3223 */ | |
| 3224 | |
| 3225 /* | |
| 3226 * Remove all pools in the system. | |
| 3227 */ | |
| 3228 void | |
| 3229 spa_evict_all(void) | |
| 3230 { | |
| 3231 spa_t *spa; | |
| 3232 | |
| 3233 /* | |
| 3234 * Remove all cached state. All pools should be closed now, | |
| 3235 * so every spa in the AVL tree should be unreferenced. | |
| 3236 */ | |
| 3237 mutex_enter(&spa_namespace_lock); | |
| 3238 while ((spa = spa_next(NULL)) != NULL) { | |
| 3239 /* | |
| 1544 | 3240 * Stop async tasks. The async thread may need to detach |
| 3241 * a device that's been replaced, which requires grabbing | |
| 3242 * spa_namespace_lock, so we must drop it here. | |
| 789 | 3243 */ |
| 3244 spa_open_ref(spa, FTAG); | |
| 3245 mutex_exit(&spa_namespace_lock); | |
| 1544 | 3246 spa_async_suspend(spa); |
| 789 | 3247 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); |
| 3248 mutex_enter(&spa_namespace_lock); | |
| 3249 spa_close(spa, FTAG); | |
| 3250 | |
| 3251 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
| 3252 spa_unload(spa); | |
| 3253 spa_deactivate(spa); | |
| 3254 } | |
| 3255 spa_remove(spa); | |
| 3256 } | |
| 3257 mutex_exit(&spa_namespace_lock); | |
| 3258 } | |
| 1544 | 3259 |
| 3260 vdev_t * | |
| 3261 spa_lookup_by_guid(spa_t *spa, uint64_t guid) | |
| 3262 { | |
| 3263 return (vdev_lookup_by_guid(spa->spa_root_vdev, guid)); | |
| 3264 } | |
| 1760 | 3265 |
| 3266 void | |
| 3267 spa_upgrade(spa_t *spa) | |
| 3268 { | |
| 3269 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 3270 | |
| 3271 /* | |
| 3272 * This should only be called for a non-faulted pool, and since a | |
| 3273 * future version would result in an unopenable pool, this shouldn't be | |
| 3274 * possible. | |
| 3275 */ | |
| 3276 ASSERT(spa->spa_uberblock.ub_version <= ZFS_VERSION); | |
| 3277 | |
| 3278 spa->spa_uberblock.ub_version = ZFS_VERSION; | |
| 3279 vdev_config_dirty(spa->spa_root_vdev); | |
| 3280 | |
| 3281 spa_config_exit(spa, FTAG); | |
| 2082 | 3282 |
| 3283 txg_wait_synced(spa_get_dsl(spa), 0); | |
| 1760 | 3284 } |
| 2082 | 3285 |
| 3286 boolean_t | |
| 3287 spa_has_spare(spa_t *spa, uint64_t guid) | |
| 3288 { | |
| 3289 int i; | |
|
3377
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3290
diff
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|
3290 uint64_t spareguid; |
| 2082 | 3291 |
| 3292 for (i = 0; i < spa->spa_nspares; i++) | |
| 3293 if (spa->spa_spares[i]->vdev_guid == guid) | |
| 3294 return (B_TRUE); | |
| 3295 | |
|
3377
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
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3290
diff
changeset
|
3296 for (i = 0; i < spa->spa_pending_nspares; i++) { |
|
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
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3290
diff
changeset
|
3297 if (nvlist_lookup_uint64(spa->spa_pending_spares[i], |
|
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
eschrock
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3290
diff
changeset
|
3298 ZPOOL_CONFIG_GUID, &spareguid) == 0 && |
|
a2fa338530c1
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3290
diff
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|
3299 spareguid == guid) |
|
a2fa338530c1
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eschrock
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3290
diff
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|
3300 return (B_TRUE); |
|
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
eschrock
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3290
diff
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|
3301 } |
|
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diff
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|
3302 |
| 2082 | 3303 return (B_FALSE); |
| 3304 } | |
| 3912 | 3305 |
| 3306 int | |
| 3307 spa_set_props(spa_t *spa, nvlist_t *nvp) | |
| 3308 { | |
| 3309 return (dsl_sync_task_do(spa_get_dsl(spa), NULL, spa_sync_props, | |
| 3310 spa, nvp, 3)); | |
| 3311 } | |
| 3312 | |
| 3313 int | |
| 3314 spa_get_props(spa_t *spa, nvlist_t **nvp) | |
| 3315 { | |
| 3316 zap_cursor_t zc; | |
| 3317 zap_attribute_t za; | |
| 3318 objset_t *mos = spa->spa_meta_objset; | |
| 3319 zfs_source_t src; | |
| 4451 | 3320 zpool_prop_t prop; |
| 3912 | 3321 nvlist_t *propval; |
| 3322 uint64_t value; | |
| 3323 int err; | |
| 3324 | |
| 3325 VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 3326 | |
| 3327 mutex_enter(&spa->spa_props_lock); | |
| 3328 /* If no props object, then just return empty nvlist */ | |
| 3329 if (spa->spa_pool_props_object == 0) { | |
| 3330 mutex_exit(&spa->spa_props_lock); | |
| 3331 return (0); | |
| 3332 } | |
| 3333 | |
| 3334 for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); | |
| 3335 (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
| 3336 zap_cursor_advance(&zc)) { | |
| 3337 | |
| 3338 if ((prop = zpool_name_to_prop(za.za_name)) == ZFS_PROP_INVAL) | |
| 3339 continue; | |
| 3340 | |
| 3341 VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 3342 switch (za.za_integer_length) { | |
| 3343 case 8: | |
| 4451 | 3344 if (zpool_prop_default_numeric(prop) == |
| 3912 | 3345 za.za_first_integer) |
| 3346 src = ZFS_SRC_DEFAULT; | |
| 3347 else | |
| 3348 src = ZFS_SRC_LOCAL; | |
| 3349 value = za.za_first_integer; | |
| 3350 | |
| 4451 | 3351 if (prop == ZPOOL_PROP_BOOTFS) { |
| 3912 | 3352 dsl_pool_t *dp; |
| 3353 dsl_dataset_t *ds = NULL; | |
| 3354 char strval[MAXPATHLEN]; | |
| 3355 | |
| 3356 dp = spa_get_dsl(spa); | |
| 3357 rw_enter(&dp->dp_config_rwlock, RW_READER); | |
| 3358 if ((err = dsl_dataset_open_obj(dp, | |
| 3359 za.za_first_integer, NULL, DS_MODE_NONE, | |
| 3360 FTAG, &ds)) != 0) { | |
| 3361 rw_exit(&dp->dp_config_rwlock); | |
| 3362 break; | |
| 3363 } | |
| 3364 dsl_dataset_name(ds, strval); | |
| 3365 dsl_dataset_close(ds, DS_MODE_NONE, FTAG); | |
| 3366 rw_exit(&dp->dp_config_rwlock); | |
| 3367 | |
| 3368 VERIFY(nvlist_add_uint64(propval, | |
| 3369 ZFS_PROP_SOURCE, src) == 0); | |
| 3370 VERIFY(nvlist_add_string(propval, | |
| 3371 ZFS_PROP_VALUE, strval) == 0); | |
| 3372 } else { | |
| 3373 VERIFY(nvlist_add_uint64(propval, | |
| 3374 ZFS_PROP_SOURCE, src) == 0); | |
| 3375 VERIFY(nvlist_add_uint64(propval, | |
| 3376 ZFS_PROP_VALUE, value) == 0); | |
| 3377 } | |
| 3378 VERIFY(nvlist_add_nvlist(*nvp, za.za_name, | |
| 3379 propval) == 0); | |
| 3380 break; | |
| 3381 } | |
| 3382 nvlist_free(propval); | |
| 3383 } | |
| 3384 zap_cursor_fini(&zc); | |
| 3385 mutex_exit(&spa->spa_props_lock); | |
| 3386 if (err && err != ENOENT) { | |
| 3387 nvlist_free(*nvp); | |
| 3388 return (err); | |
| 3389 } | |
| 3390 | |
| 3391 return (0); | |
| 3392 } | |
| 3393 | |
| 3394 /* | |
| 3395 * If the bootfs property value is dsobj, clear it. | |
| 3396 */ | |
| 3397 void | |
| 3398 spa_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) | |
| 3399 { | |
| 3400 if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { | |
| 3401 VERIFY(zap_remove(spa->spa_meta_objset, | |
| 3402 spa->spa_pool_props_object, | |
| 4451 | 3403 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); |
| 3912 | 3404 spa->spa_bootfs = 0; |
| 3405 } | |
| 3406 } | |
| 4451 | 3407 |
| 3408 /* | |
| 3409 * Post a sysevent corresponding to the given event. The 'name' must be one of | |
| 3410 * the event definitions in sys/sysevent/eventdefs.h. The payload will be | |
| 3411 * filled in from the spa and (optionally) the vdev. This doesn't do anything | |
| 3412 * in the userland libzpool, as we don't want consumers to misinterpret ztest | |
| 3413 * or zdb as real changes. | |
| 3414 */ | |
| 3415 void | |
| 3416 spa_event_notify(spa_t *spa, vdev_t *vd, const char *name) | |
| 3417 { | |
| 3418 #ifdef _KERNEL | |
| 3419 sysevent_t *ev; | |
| 3420 sysevent_attr_list_t *attr = NULL; | |
| 3421 sysevent_value_t value; | |
| 3422 sysevent_id_t eid; | |
| 3423 | |
| 3424 ev = sysevent_alloc(EC_ZFS, (char *)name, SUNW_KERN_PUB "zfs", | |
| 3425 SE_SLEEP); | |
| 3426 | |
| 3427 value.value_type = SE_DATA_TYPE_STRING; | |
| 3428 value.value.sv_string = spa_name(spa); | |
| 3429 if (sysevent_add_attr(&attr, ZFS_EV_POOL_NAME, &value, SE_SLEEP) != 0) | |
| 3430 goto done; | |
| 3431 | |
| 3432 value.value_type = SE_DATA_TYPE_UINT64; | |
| 3433 value.value.sv_uint64 = spa_guid(spa); | |
| 3434 if (sysevent_add_attr(&attr, ZFS_EV_POOL_GUID, &value, SE_SLEEP) != 0) | |
| 3435 goto done; | |
| 3436 | |
| 3437 if (vd) { | |
| 3438 value.value_type = SE_DATA_TYPE_UINT64; | |
| 3439 value.value.sv_uint64 = vd->vdev_guid; | |
| 3440 if (sysevent_add_attr(&attr, ZFS_EV_VDEV_GUID, &value, | |
| 3441 SE_SLEEP) != 0) | |
| 3442 goto done; | |
| 3443 | |
| 3444 if (vd->vdev_path) { | |
| 3445 value.value_type = SE_DATA_TYPE_STRING; | |
| 3446 value.value.sv_string = vd->vdev_path; | |
| 3447 if (sysevent_add_attr(&attr, ZFS_EV_VDEV_PATH, | |
| 3448 &value, SE_SLEEP) != 0) | |
| 3449 goto done; | |
| 3450 } | |
| 3451 } | |
| 3452 | |
| 3453 (void) log_sysevent(ev, SE_SLEEP, &eid); | |
| 3454 | |
| 3455 done: | |
| 3456 if (attr) | |
| 3457 sysevent_free_attr(attr); | |
| 3458 sysevent_free(ev); | |
| 3459 #endif | |
| 3460 } |