Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/spa.c @ 2986:c782fcf7a319
6485204 more tuneable tweakin
| author | ek110237 |
|---|---|
| date | Thu, 26 Oct 2006 14:05:48 -0700 |
| parents | acfcfefbc60d |
| children | 256464cbb73c |
| 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 2006 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> | |
| 51 #include <sys/unique.h> | |
| 52 #include <sys/dsl_pool.h> | |
| 53 #include <sys/dsl_dir.h> | |
| 54 #include <sys/dsl_prop.h> | |
| 55 #include <sys/fs/zfs.h> | |
| 56 #include <sys/callb.h> | |
| 57 | |
| 2986 | 58 int zio_taskq_threads = 8; |
| 59 | |
| 789 | 60 /* |
| 61 * ========================================================================== | |
| 62 * SPA state manipulation (open/create/destroy/import/export) | |
| 63 * ========================================================================== | |
| 64 */ | |
| 65 | |
| 1544 | 66 static int |
| 67 spa_error_entry_compare(const void *a, const void *b) | |
| 68 { | |
| 69 spa_error_entry_t *sa = (spa_error_entry_t *)a; | |
| 70 spa_error_entry_t *sb = (spa_error_entry_t *)b; | |
| 71 int ret; | |
| 72 | |
| 73 ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, | |
| 74 sizeof (zbookmark_t)); | |
| 75 | |
| 76 if (ret < 0) | |
| 77 return (-1); | |
| 78 else if (ret > 0) | |
| 79 return (1); | |
| 80 else | |
| 81 return (0); | |
| 82 } | |
| 83 | |
| 84 /* | |
| 85 * Utility function which retrieves copies of the current logs and | |
| 86 * re-initializes them in the process. | |
| 87 */ | |
| 88 void | |
| 89 spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
| 90 { | |
| 91 ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
| 92 | |
| 93 bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
| 94 bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
| 95 | |
| 96 avl_create(&spa->spa_errlist_scrub, | |
| 97 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 98 offsetof(spa_error_entry_t, se_avl)); | |
| 99 avl_create(&spa->spa_errlist_last, | |
| 100 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 101 offsetof(spa_error_entry_t, se_avl)); | |
| 102 } | |
| 103 | |
| 789 | 104 /* |
| 105 * Activate an uninitialized pool. | |
| 106 */ | |
| 107 static void | |
| 108 spa_activate(spa_t *spa) | |
| 109 { | |
| 110 int t; | |
| 111 | |
| 112 ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
| 113 | |
| 114 spa->spa_state = POOL_STATE_ACTIVE; | |
| 115 | |
| 116 spa->spa_normal_class = metaslab_class_create(); | |
| 117 | |
| 118 for (t = 0; t < ZIO_TYPES; t++) { | |
| 119 spa->spa_zio_issue_taskq[t] = taskq_create("spa_zio_issue", | |
| 2986 | 120 zio_taskq_threads, maxclsyspri, 50, INT_MAX, |
| 789 | 121 TASKQ_PREPOPULATE); |
| 122 spa->spa_zio_intr_taskq[t] = taskq_create("spa_zio_intr", | |
| 2986 | 123 zio_taskq_threads, maxclsyspri, 50, INT_MAX, |
| 789 | 124 TASKQ_PREPOPULATE); |
| 125 } | |
| 126 | |
| 127 rw_init(&spa->spa_traverse_lock, NULL, RW_DEFAULT, NULL); | |
| 128 | |
| 2856 | 129 mutex_init(&spa->spa_async_lock, NULL, MUTEX_DEFAULT, NULL); |
| 130 mutex_init(&spa->spa_config_cache_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 131 mutex_init(&spa->spa_scrub_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 132 mutex_init(&spa->spa_errlog_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 133 mutex_init(&spa->spa_errlist_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 134 mutex_init(&spa->spa_config_lock.scl_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 135 mutex_init(&spa->spa_sync_bplist.bpl_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 2926 | 136 mutex_init(&spa->spa_history_lock, NULL, MUTEX_DEFAULT, NULL); |
| 2856 | 137 |
| 789 | 138 list_create(&spa->spa_dirty_list, sizeof (vdev_t), |
| 139 offsetof(vdev_t, vdev_dirty_node)); | |
| 140 | |
| 141 txg_list_create(&spa->spa_vdev_txg_list, | |
| 142 offsetof(struct vdev, vdev_txg_node)); | |
| 1544 | 143 |
| 144 avl_create(&spa->spa_errlist_scrub, | |
| 145 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 146 offsetof(spa_error_entry_t, se_avl)); | |
| 147 avl_create(&spa->spa_errlist_last, | |
| 148 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 149 offsetof(spa_error_entry_t, se_avl)); | |
| 789 | 150 } |
| 151 | |
| 152 /* | |
| 153 * Opposite of spa_activate(). | |
| 154 */ | |
| 155 static void | |
| 156 spa_deactivate(spa_t *spa) | |
| 157 { | |
| 158 int t; | |
| 159 | |
| 160 ASSERT(spa->spa_sync_on == B_FALSE); | |
| 161 ASSERT(spa->spa_dsl_pool == NULL); | |
| 162 ASSERT(spa->spa_root_vdev == NULL); | |
| 163 | |
| 164 ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); | |
| 165 | |
| 166 txg_list_destroy(&spa->spa_vdev_txg_list); | |
| 167 | |
| 168 list_destroy(&spa->spa_dirty_list); | |
| 169 | |
| 170 rw_destroy(&spa->spa_traverse_lock); | |
| 171 | |
| 172 for (t = 0; t < ZIO_TYPES; t++) { | |
| 173 taskq_destroy(spa->spa_zio_issue_taskq[t]); | |
| 174 taskq_destroy(spa->spa_zio_intr_taskq[t]); | |
| 175 spa->spa_zio_issue_taskq[t] = NULL; | |
| 176 spa->spa_zio_intr_taskq[t] = NULL; | |
| 177 } | |
| 178 | |
| 179 metaslab_class_destroy(spa->spa_normal_class); | |
| 180 spa->spa_normal_class = NULL; | |
| 181 | |
| 1544 | 182 /* |
| 183 * If this was part of an import or the open otherwise failed, we may | |
| 184 * still have errors left in the queues. Empty them just in case. | |
| 185 */ | |
| 186 spa_errlog_drain(spa); | |
| 187 | |
| 188 avl_destroy(&spa->spa_errlist_scrub); | |
| 189 avl_destroy(&spa->spa_errlist_last); | |
| 190 | |
| 789 | 191 spa->spa_state = POOL_STATE_UNINITIALIZED; |
| 192 } | |
| 193 | |
| 194 /* | |
| 195 * Verify a pool configuration, and construct the vdev tree appropriately. This | |
| 196 * will create all the necessary vdevs in the appropriate layout, with each vdev | |
| 197 * in the CLOSED state. This will prep the pool before open/creation/import. | |
| 198 * All vdev validation is done by the vdev_alloc() routine. | |
| 199 */ | |
| 2082 | 200 static int |
| 201 spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
| 202 uint_t id, int atype) | |
| 789 | 203 { |
| 204 nvlist_t **child; | |
| 205 uint_t c, children; | |
| 2082 | 206 int error; |
| 207 | |
| 208 if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
| 209 return (error); | |
| 210 | |
| 211 if ((*vdp)->vdev_ops->vdev_op_leaf) | |
| 212 return (0); | |
| 789 | 213 |
| 214 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, | |
| 215 &child, &children) != 0) { | |
| 2082 | 216 vdev_free(*vdp); |
| 217 *vdp = NULL; | |
| 218 return (EINVAL); | |
| 789 | 219 } |
| 220 | |
| 221 for (c = 0; c < children; c++) { | |
| 2082 | 222 vdev_t *vd; |
| 223 if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
| 224 atype)) != 0) { | |
| 225 vdev_free(*vdp); | |
| 226 *vdp = NULL; | |
| 227 return (error); | |
| 789 | 228 } |
| 229 } | |
| 230 | |
| 2082 | 231 ASSERT(*vdp != NULL); |
| 232 | |
| 233 return (0); | |
| 789 | 234 } |
| 235 | |
| 236 /* | |
| 237 * Opposite of spa_load(). | |
| 238 */ | |
| 239 static void | |
| 240 spa_unload(spa_t *spa) | |
| 241 { | |
| 2082 | 242 int i; |
| 243 | |
| 789 | 244 /* |
| 1544 | 245 * Stop async tasks. |
| 246 */ | |
| 247 spa_async_suspend(spa); | |
| 248 | |
| 249 /* | |
| 789 | 250 * Stop syncing. |
| 251 */ | |
| 252 if (spa->spa_sync_on) { | |
| 253 txg_sync_stop(spa->spa_dsl_pool); | |
| 254 spa->spa_sync_on = B_FALSE; | |
| 255 } | |
| 256 | |
| 257 /* | |
| 258 * Wait for any outstanding prefetch I/O to complete. | |
| 259 */ | |
| 1544 | 260 spa_config_enter(spa, RW_WRITER, FTAG); |
| 261 spa_config_exit(spa, FTAG); | |
| 789 | 262 |
| 263 /* | |
| 264 * Close the dsl pool. | |
| 265 */ | |
| 266 if (spa->spa_dsl_pool) { | |
| 267 dsl_pool_close(spa->spa_dsl_pool); | |
| 268 spa->spa_dsl_pool = NULL; | |
| 269 } | |
| 270 | |
| 271 /* | |
| 272 * Close all vdevs. | |
| 273 */ | |
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274 if (spa->spa_root_vdev) |
| 789 | 275 vdev_free(spa->spa_root_vdev); |
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276 ASSERT(spa->spa_root_vdev == NULL); |
| 1544 | 277 |
| 2082 | 278 for (i = 0; i < spa->spa_nspares; i++) |
| 279 vdev_free(spa->spa_spares[i]); | |
| 280 if (spa->spa_spares) { | |
| 281 kmem_free(spa->spa_spares, spa->spa_nspares * sizeof (void *)); | |
| 282 spa->spa_spares = NULL; | |
| 283 } | |
| 284 if (spa->spa_sparelist) { | |
| 285 nvlist_free(spa->spa_sparelist); | |
| 286 spa->spa_sparelist = NULL; | |
| 287 } | |
| 288 | |
| 1544 | 289 spa->spa_async_suspended = 0; |
| 789 | 290 } |
| 291 | |
| 292 /* | |
| 2082 | 293 * Load (or re-load) the current list of vdevs describing the active spares for |
| 294 * this pool. When this is called, we have some form of basic information in | |
| 295 * 'spa_sparelist'. We parse this into vdevs, try to open them, and then | |
| 296 * re-generate a more complete list including status information. | |
| 297 */ | |
| 298 static void | |
| 299 spa_load_spares(spa_t *spa) | |
| 300 { | |
| 301 nvlist_t **spares; | |
| 302 uint_t nspares; | |
| 303 int i; | |
| 304 | |
| 305 /* | |
| 306 * First, close and free any existing spare vdevs. | |
| 307 */ | |
| 308 for (i = 0; i < spa->spa_nspares; i++) { | |
| 309 vdev_close(spa->spa_spares[i]); | |
| 310 vdev_free(spa->spa_spares[i]); | |
| 311 } | |
| 312 if (spa->spa_spares) | |
| 313 kmem_free(spa->spa_spares, spa->spa_nspares * sizeof (void *)); | |
| 314 | |
| 315 if (spa->spa_sparelist == NULL) | |
| 316 nspares = 0; | |
| 317 else | |
| 318 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 319 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 320 | |
| 321 spa->spa_nspares = (int)nspares; | |
| 322 spa->spa_spares = NULL; | |
| 323 | |
| 324 if (nspares == 0) | |
| 325 return; | |
| 326 | |
| 327 /* | |
| 328 * Construct the array of vdevs, opening them to get status in the | |
| 329 * process. | |
| 330 */ | |
| 331 spa->spa_spares = kmem_alloc(nspares * sizeof (void *), KM_SLEEP); | |
| 332 for (i = 0; i < spa->spa_nspares; i++) { | |
| 333 vdev_t *vd; | |
| 334 | |
| 335 VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
| 336 VDEV_ALLOC_SPARE) == 0); | |
| 337 ASSERT(vd != NULL); | |
| 338 | |
| 339 spa->spa_spares[i] = vd; | |
| 340 | |
| 341 if (vdev_open(vd) != 0) | |
| 342 continue; | |
| 343 | |
| 344 vd->vdev_top = vd; | |
| 345 (void) vdev_validate_spare(vd); | |
| 346 } | |
| 347 | |
| 348 /* | |
| 349 * Recompute the stashed list of spares, with status information | |
| 350 * this time. | |
| 351 */ | |
| 352 VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 353 DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 354 | |
| 355 spares = kmem_alloc(spa->spa_nspares * sizeof (void *), KM_SLEEP); | |
| 356 for (i = 0; i < spa->spa_nspares; i++) | |
| 357 spares[i] = vdev_config_generate(spa, spa->spa_spares[i], | |
| 358 B_TRUE, B_TRUE); | |
| 359 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 360 spares, spa->spa_nspares) == 0); | |
| 361 for (i = 0; i < spa->spa_nspares; i++) | |
| 362 nvlist_free(spares[i]); | |
| 363 kmem_free(spares, spa->spa_nspares * sizeof (void *)); | |
| 364 } | |
| 365 | |
| 366 static int | |
| 367 load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
| 368 { | |
| 369 dmu_buf_t *db; | |
| 370 char *packed = NULL; | |
| 371 size_t nvsize = 0; | |
| 372 int error; | |
| 373 *value = NULL; | |
| 374 | |
| 375 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
| 376 nvsize = *(uint64_t *)db->db_data; | |
| 377 dmu_buf_rele(db, FTAG); | |
| 378 | |
| 379 packed = kmem_alloc(nvsize, KM_SLEEP); | |
| 380 error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed); | |
| 381 if (error == 0) | |
| 382 error = nvlist_unpack(packed, nvsize, value, 0); | |
| 383 kmem_free(packed, nvsize); | |
| 384 | |
| 385 return (error); | |
| 386 } | |
| 387 | |
| 388 /* | |
| 789 | 389 * Load an existing storage pool, using the pool's builtin spa_config as a |
| 1544 | 390 * source of configuration information. |
| 789 | 391 */ |
| 392 static int | |
| 1544 | 393 spa_load(spa_t *spa, nvlist_t *config, spa_load_state_t state, int mosconfig) |
| 789 | 394 { |
| 395 int error = 0; | |
| 396 nvlist_t *nvroot = NULL; | |
| 397 vdev_t *rvd; | |
| 398 uberblock_t *ub = &spa->spa_uberblock; | |
|
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399 uint64_t config_cache_txg = spa->spa_config_txg; |
| 789 | 400 uint64_t pool_guid; |
| 2082 | 401 uint64_t version; |
| 789 | 402 zio_t *zio; |
| 403 | |
| 1544 | 404 spa->spa_load_state = state; |
|
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405 |
| 789 | 406 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot) || |
| 1733 | 407 nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) { |
| 1544 | 408 error = EINVAL; |
| 409 goto out; | |
| 410 } | |
| 789 | 411 |
| 2082 | 412 /* |
| 413 * Versioning wasn't explicitly added to the label until later, so if | |
| 414 * it's not present treat it as the initial version. | |
| 415 */ | |
| 416 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &version) != 0) | |
| 417 version = ZFS_VERSION_INITIAL; | |
| 418 | |
| 1733 | 419 (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, |
| 420 &spa->spa_config_txg); | |
| 421 | |
|
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422 if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && |
| 1544 | 423 spa_guid_exists(pool_guid, 0)) { |
| 424 error = EEXIST; | |
| 425 goto out; | |
| 426 } | |
| 789 | 427 |
|
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428 spa->spa_load_guid = pool_guid; |
|
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429 |
| 789 | 430 /* |
| 2082 | 431 * Parse the configuration into a vdev tree. We explicitly set the |
| 432 * value that will be returned by spa_version() since parsing the | |
| 433 * configuration requires knowing the version number. | |
| 789 | 434 */ |
| 1544 | 435 spa_config_enter(spa, RW_WRITER, FTAG); |
| 2082 | 436 spa->spa_ubsync.ub_version = version; |
| 437 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_LOAD); | |
| 1544 | 438 spa_config_exit(spa, FTAG); |
| 789 | 439 |
| 2082 | 440 if (error != 0) |
| 1544 | 441 goto out; |
| 789 | 442 |
|
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changeset
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443 ASSERT(spa->spa_root_vdev == rvd); |
| 789 | 444 ASSERT(spa_guid(spa) == pool_guid); |
| 445 | |
| 446 /* | |
| 447 * Try to open all vdevs, loading each label in the process. | |
| 448 */ | |
| 1544 | 449 if (vdev_open(rvd) != 0) { |
| 450 error = ENXIO; | |
| 451 goto out; | |
| 452 } | |
| 789 | 453 |
| 454 /* | |
|
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6424405 zpool import destroyed_pool can damage existing pool using same devices
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455 * Validate the labels for all leaf vdevs. We need to grab the config |
|
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6424405 zpool import destroyed_pool can damage existing pool using same devices
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456 * lock because all label I/O is done with the ZIO_FLAG_CONFIG_HELD |
|
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6424405 zpool import destroyed_pool can damage existing pool using same devices
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457 * flag. |
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458 */ |
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459 spa_config_enter(spa, RW_READER, FTAG); |
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6424405 zpool import destroyed_pool can damage existing pool using same devices
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460 error = vdev_validate(rvd); |
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6424405 zpool import destroyed_pool can damage existing pool using same devices
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461 spa_config_exit(spa, FTAG); |
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6424405 zpool import destroyed_pool can damage existing pool using same devices
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462 |
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463 if (error != 0) { |
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464 error = EBADF; |
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465 goto out; |
|
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|
466 } |
|
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467 |
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468 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
|
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469 error = ENXIO; |
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470 goto out; |
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|
471 } |
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472 |
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473 /* |
| 789 | 474 * Find the best uberblock. |
| 475 */ | |
| 476 bzero(ub, sizeof (uberblock_t)); | |
| 477 | |
| 478 zio = zio_root(spa, NULL, NULL, | |
| 479 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
| 480 vdev_uberblock_load(zio, rvd, ub); | |
| 481 error = zio_wait(zio); | |
| 482 | |
| 483 /* | |
| 484 * If we weren't able to find a single valid uberblock, return failure. | |
| 485 */ | |
| 486 if (ub->ub_txg == 0) { | |
| 1760 | 487 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 488 VDEV_AUX_CORRUPT_DATA); | |
| 1544 | 489 error = ENXIO; |
| 490 goto out; | |
| 491 } | |
| 492 | |
| 493 /* | |
| 494 * If the pool is newer than the code, we can't open it. | |
| 495 */ | |
| 1760 | 496 if (ub->ub_version > ZFS_VERSION) { |
| 497 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 498 VDEV_AUX_VERSION_NEWER); | |
| 1544 | 499 error = ENOTSUP; |
| 500 goto out; | |
| 789 | 501 } |
| 502 | |
| 503 /* | |
| 504 * If the vdev guid sum doesn't match the uberblock, we have an | |
| 505 * incomplete configuration. | |
| 506 */ | |
| 1732 | 507 if (rvd->vdev_guid_sum != ub->ub_guid_sum && mosconfig) { |
| 1544 | 508 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 509 VDEV_AUX_BAD_GUID_SUM); | |
| 510 error = ENXIO; | |
| 511 goto out; | |
| 789 | 512 } |
| 513 | |
| 514 /* | |
| 515 * Initialize internal SPA structures. | |
| 516 */ | |
| 517 spa->spa_state = POOL_STATE_ACTIVE; | |
| 518 spa->spa_ubsync = spa->spa_uberblock; | |
| 519 spa->spa_first_txg = spa_last_synced_txg(spa) + 1; | |
| 1544 | 520 error = dsl_pool_open(spa, spa->spa_first_txg, &spa->spa_dsl_pool); |
| 521 if (error) { | |
| 522 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 523 VDEV_AUX_CORRUPT_DATA); | |
| 524 goto out; | |
| 525 } | |
| 789 | 526 spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; |
| 527 | |
| 1544 | 528 if (zap_lookup(spa->spa_meta_objset, |
| 789 | 529 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
| 1544 | 530 sizeof (uint64_t), 1, &spa->spa_config_object) != 0) { |
| 531 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 532 VDEV_AUX_CORRUPT_DATA); | |
| 533 error = EIO; | |
| 534 goto out; | |
| 535 } | |
| 789 | 536 |
| 537 if (!mosconfig) { | |
| 2082 | 538 nvlist_t *newconfig; |
| 539 | |
| 540 if (load_nvlist(spa, spa->spa_config_object, &newconfig) != 0) { | |
| 1544 | 541 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 542 VDEV_AUX_CORRUPT_DATA); | |
| 543 error = EIO; | |
| 544 goto out; | |
| 545 } | |
| 789 | 546 |
| 547 spa_config_set(spa, newconfig); | |
| 548 spa_unload(spa); | |
| 549 spa_deactivate(spa); | |
| 550 spa_activate(spa); | |
| 551 | |
| 1544 | 552 return (spa_load(spa, newconfig, state, B_TRUE)); |
| 553 } | |
| 554 | |
| 555 if (zap_lookup(spa->spa_meta_objset, | |
| 556 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, | |
| 557 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj) != 0) { | |
| 558 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 559 VDEV_AUX_CORRUPT_DATA); | |
| 560 error = EIO; | |
| 561 goto out; | |
| 789 | 562 } |
| 563 | |
| 1544 | 564 /* |
| 2082 | 565 * Load the bit that tells us to use the new accounting function |
| 566 * (raid-z deflation). If we have an older pool, this will not | |
| 567 * be present. | |
| 568 */ | |
| 569 error = zap_lookup(spa->spa_meta_objset, | |
| 570 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 571 sizeof (uint64_t), 1, &spa->spa_deflate); | |
| 572 if (error != 0 && error != ENOENT) { | |
| 573 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 574 VDEV_AUX_CORRUPT_DATA); | |
| 575 error = EIO; | |
| 576 goto out; | |
| 577 } | |
| 578 | |
| 579 /* | |
| 1544 | 580 * Load the persistent error log. If we have an older pool, this will |
| 581 * not be present. | |
| 582 */ | |
| 583 error = zap_lookup(spa->spa_meta_objset, | |
| 584 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_LAST, | |
| 585 sizeof (uint64_t), 1, &spa->spa_errlog_last); | |
|
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586 if (error != 0 && error != ENOENT) { |
| 1544 | 587 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 588 VDEV_AUX_CORRUPT_DATA); | |
| 589 error = EIO; | |
| 590 goto out; | |
| 591 } | |
| 592 | |
| 593 error = zap_lookup(spa->spa_meta_objset, | |
| 594 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_SCRUB, | |
| 595 sizeof (uint64_t), 1, &spa->spa_errlog_scrub); | |
| 596 if (error != 0 && error != ENOENT) { | |
| 597 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 598 VDEV_AUX_CORRUPT_DATA); | |
| 599 error = EIO; | |
| 600 goto out; | |
| 601 } | |
| 789 | 602 |
| 603 /* | |
| 2926 | 604 * Load the history object. If we have an older pool, this |
| 605 * will not be present. | |
| 606 */ | |
| 607 error = zap_lookup(spa->spa_meta_objset, | |
| 608 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_HISTORY, | |
| 609 sizeof (uint64_t), 1, &spa->spa_history); | |
| 610 if (error != 0 && error != ENOENT) { | |
| 611 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 612 VDEV_AUX_CORRUPT_DATA); | |
| 613 error = EIO; | |
| 614 goto out; | |
| 615 } | |
| 616 | |
| 617 /* | |
| 2082 | 618 * Load any hot spares for this pool. |
| 619 */ | |
| 620 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
| 621 DMU_POOL_SPARES, sizeof (uint64_t), 1, &spa->spa_spares_object); | |
| 622 if (error != 0 && error != ENOENT) { | |
| 623 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 624 VDEV_AUX_CORRUPT_DATA); | |
| 625 error = EIO; | |
| 626 goto out; | |
| 627 } | |
| 628 if (error == 0) { | |
| 629 ASSERT(spa_version(spa) >= ZFS_VERSION_SPARES); | |
| 630 if (load_nvlist(spa, spa->spa_spares_object, | |
| 631 &spa->spa_sparelist) != 0) { | |
| 632 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 633 VDEV_AUX_CORRUPT_DATA); | |
| 634 error = EIO; | |
| 635 goto out; | |
| 636 } | |
| 637 | |
| 638 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 639 spa_load_spares(spa); | |
| 640 spa_config_exit(spa, FTAG); | |
| 641 } | |
| 642 | |
| 643 /* | |
|
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644 * Load the vdev state for all toplevel vdevs. |
| 789 | 645 */ |
|
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646 vdev_load(rvd); |
| 789 | 647 |
| 648 /* | |
| 649 * Propagate the leaf DTLs we just loaded all the way up the tree. | |
| 650 */ | |
| 1544 | 651 spa_config_enter(spa, RW_WRITER, FTAG); |
| 789 | 652 vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
| 1544 | 653 spa_config_exit(spa, FTAG); |
| 789 | 654 |
| 655 /* | |
| 656 * Check the state of the root vdev. If it can't be opened, it | |
| 657 * indicates one or more toplevel vdevs are faulted. | |
| 658 */ | |
| 1544 | 659 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
| 660 error = ENXIO; | |
| 661 goto out; | |
| 662 } | |
| 789 | 663 |
| 1544 | 664 if ((spa_mode & FWRITE) && state != SPA_LOAD_TRYIMPORT) { |
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665 dmu_tx_t *tx; |
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666 int need_update = B_FALSE; |
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667 int c; |
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668 |
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669 /* |
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670 * Claim log blocks that haven't been committed yet. |
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671 * This must all happen in a single txg. |
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672 */ |
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673 tx = dmu_tx_create_assigned(spa_get_dsl(spa), |
| 789 | 674 spa_first_txg(spa)); |
| 2417 | 675 (void) dmu_objset_find(spa->spa_name, |
| 676 zil_claim, tx, DS_FIND_CHILDREN); | |
| 789 | 677 dmu_tx_commit(tx); |
| 678 | |
| 679 spa->spa_sync_on = B_TRUE; | |
| 680 txg_sync_start(spa->spa_dsl_pool); | |
| 681 | |
| 682 /* | |
| 683 * Wait for all claims to sync. | |
| 684 */ | |
| 685 txg_wait_synced(spa->spa_dsl_pool, 0); | |
|
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686 |
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687 /* |
|
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688 * If the config cache is stale, or we have uninitialized |
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689 * metaslabs (see spa_vdev_add()), then update the config. |
|
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690 */ |
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691 if (config_cache_txg != spa->spa_config_txg || |
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692 state == SPA_LOAD_IMPORT) |
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693 need_update = B_TRUE; |
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694 |
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695 for (c = 0; c < rvd->vdev_children; c++) |
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696 if (rvd->vdev_child[c]->vdev_ms_array == 0) |
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697 need_update = B_TRUE; |
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698 |
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699 /* |
|
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700 * Update the config cache asychronously in case we're the |
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701 * root pool, in which case the config cache isn't writable yet. |
|
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702 */ |
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703 if (need_update) |
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704 spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); |
| 789 | 705 } |
| 706 | |
| 1544 | 707 error = 0; |
| 708 out: | |
| 2082 | 709 if (error && error != EBADF) |
| 1544 | 710 zfs_ereport_post(FM_EREPORT_ZFS_POOL, spa, NULL, NULL, 0, 0); |
| 711 spa->spa_load_state = SPA_LOAD_NONE; | |
| 712 spa->spa_ena = 0; | |
| 713 | |
| 714 return (error); | |
| 789 | 715 } |
| 716 | |
| 717 /* | |
| 718 * Pool Open/Import | |
| 719 * | |
| 720 * The import case is identical to an open except that the configuration is sent | |
| 721 * down from userland, instead of grabbed from the configuration cache. For the | |
| 722 * case of an open, the pool configuration will exist in the | |
| 723 * POOL_STATE_UNITIALIZED state. | |
| 724 * | |
| 725 * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
| 726 * the same time open the pool, without having to keep around the spa_t in some | |
| 727 * ambiguous state. | |
| 728 */ | |
| 729 static int | |
| 730 spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t **config) | |
| 731 { | |
| 732 spa_t *spa; | |
| 733 int error; | |
| 734 int loaded = B_FALSE; | |
| 735 int locked = B_FALSE; | |
| 736 | |
| 737 *spapp = NULL; | |
| 738 | |
| 739 /* | |
| 740 * As disgusting as this is, we need to support recursive calls to this | |
| 741 * function because dsl_dir_open() is called during spa_load(), and ends | |
| 742 * up calling spa_open() again. The real fix is to figure out how to | |
| 743 * avoid dsl_dir_open() calling this in the first place. | |
| 744 */ | |
| 745 if (mutex_owner(&spa_namespace_lock) != curthread) { | |
| 746 mutex_enter(&spa_namespace_lock); | |
| 747 locked = B_TRUE; | |
| 748 } | |
| 749 | |
| 750 if ((spa = spa_lookup(pool)) == NULL) { | |
| 751 if (locked) | |
| 752 mutex_exit(&spa_namespace_lock); | |
| 753 return (ENOENT); | |
| 754 } | |
| 755 if (spa->spa_state == POOL_STATE_UNINITIALIZED) { | |
| 756 | |
| 757 spa_activate(spa); | |
| 758 | |
|
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759 error = spa_load(spa, spa->spa_config, SPA_LOAD_OPEN, B_FALSE); |
| 789 | 760 |
| 761 if (error == EBADF) { | |
| 762 /* | |
|
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763 * If vdev_validate() returns failure (indicated by |
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764 * EBADF), it indicates that one of the vdevs indicates |
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765 * that the pool has been exported or destroyed. If |
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766 * this is the case, the config cache is out of sync and |
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767 * we should remove the pool from the namespace. |
| 789 | 768 */ |
| 2082 | 769 zfs_post_ok(spa, NULL); |
| 789 | 770 spa_unload(spa); |
| 771 spa_deactivate(spa); | |
| 772 spa_remove(spa); | |
| 773 spa_config_sync(); | |
| 774 if (locked) | |
| 775 mutex_exit(&spa_namespace_lock); | |
| 776 return (ENOENT); | |
| 1544 | 777 } |
| 778 | |
| 779 if (error) { | |
| 789 | 780 /* |
| 781 * We can't open the pool, but we still have useful | |
| 782 * information: the state of each vdev after the | |
| 783 * attempted vdev_open(). Return this to the user. | |
| 784 */ | |
|
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785 if (config != NULL && spa->spa_root_vdev != NULL) { |
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786 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 787 *config = spa_config_generate(spa, NULL, -1ULL, |
| 788 B_TRUE); | |
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789 spa_config_exit(spa, FTAG); |
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790 } |
| 789 | 791 spa_unload(spa); |
| 792 spa_deactivate(spa); | |
| 1544 | 793 spa->spa_last_open_failed = B_TRUE; |
| 789 | 794 if (locked) |
| 795 mutex_exit(&spa_namespace_lock); | |
| 796 *spapp = NULL; | |
| 797 return (error); | |
| 1544 | 798 } else { |
| 799 zfs_post_ok(spa, NULL); | |
| 800 spa->spa_last_open_failed = B_FALSE; | |
| 789 | 801 } |
| 802 | |
| 803 loaded = B_TRUE; | |
| 804 } | |
| 805 | |
| 806 spa_open_ref(spa, tag); | |
| 807 if (locked) | |
| 808 mutex_exit(&spa_namespace_lock); | |
| 809 | |
| 810 *spapp = spa; | |
| 811 | |
| 812 if (config != NULL) { | |
| 1544 | 813 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 814 *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
| 1544 | 815 spa_config_exit(spa, FTAG); |
| 789 | 816 } |
| 817 | |
| 818 /* | |
| 819 * If we just loaded the pool, resilver anything that's out of date. | |
| 820 */ | |
| 821 if (loaded && (spa_mode & FWRITE)) | |
| 822 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 823 | |
| 824 return (0); | |
| 825 } | |
| 826 | |
| 827 int | |
| 828 spa_open(const char *name, spa_t **spapp, void *tag) | |
| 829 { | |
| 830 return (spa_open_common(name, spapp, tag, NULL)); | |
| 831 } | |
| 832 | |
| 1544 | 833 /* |
| 834 * Lookup the given spa_t, incrementing the inject count in the process, | |
| 835 * preventing it from being exported or destroyed. | |
| 836 */ | |
| 837 spa_t * | |
| 838 spa_inject_addref(char *name) | |
| 839 { | |
| 840 spa_t *spa; | |
| 841 | |
| 842 mutex_enter(&spa_namespace_lock); | |
| 843 if ((spa = spa_lookup(name)) == NULL) { | |
| 844 mutex_exit(&spa_namespace_lock); | |
| 845 return (NULL); | |
| 846 } | |
| 847 spa->spa_inject_ref++; | |
| 848 mutex_exit(&spa_namespace_lock); | |
| 849 | |
| 850 return (spa); | |
| 851 } | |
| 852 | |
| 853 void | |
| 854 spa_inject_delref(spa_t *spa) | |
| 855 { | |
| 856 mutex_enter(&spa_namespace_lock); | |
| 857 spa->spa_inject_ref--; | |
| 858 mutex_exit(&spa_namespace_lock); | |
| 859 } | |
| 860 | |
| 2082 | 861 static void |
| 862 spa_add_spares(spa_t *spa, nvlist_t *config) | |
| 863 { | |
| 864 nvlist_t **spares; | |
| 865 uint_t i, nspares; | |
| 866 nvlist_t *nvroot; | |
| 867 uint64_t guid; | |
| 868 vdev_stat_t *vs; | |
| 869 uint_t vsc; | |
| 870 | |
| 871 if (spa->spa_nspares == 0) | |
| 872 return; | |
| 873 | |
| 874 VERIFY(nvlist_lookup_nvlist(config, | |
| 875 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
| 876 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 877 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 878 if (nspares != 0) { | |
| 879 VERIFY(nvlist_add_nvlist_array(nvroot, | |
| 880 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 881 VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
| 882 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 883 | |
| 884 /* | |
| 885 * Go through and find any spares which have since been | |
| 886 * repurposed as an active spare. If this is the case, update | |
| 887 * their status appropriately. | |
| 888 */ | |
| 889 for (i = 0; i < nspares; i++) { | |
| 890 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 891 ZPOOL_CONFIG_GUID, &guid) == 0); | |
| 892 if (spa_spare_inuse(guid)) { | |
| 893 VERIFY(nvlist_lookup_uint64_array( | |
| 894 spares[i], ZPOOL_CONFIG_STATS, | |
| 895 (uint64_t **)&vs, &vsc) == 0); | |
| 896 vs->vs_state = VDEV_STATE_CANT_OPEN; | |
| 897 vs->vs_aux = VDEV_AUX_SPARED; | |
| 898 } | |
| 899 } | |
| 900 } | |
| 901 } | |
| 902 | |
| 789 | 903 int |
| 1544 | 904 spa_get_stats(const char *name, nvlist_t **config, char *altroot, size_t buflen) |
| 789 | 905 { |
| 906 int error; | |
| 907 spa_t *spa; | |
| 908 | |
| 909 *config = NULL; | |
| 910 error = spa_open_common(name, &spa, FTAG, config); | |
| 911 | |
| 2082 | 912 if (spa && *config != NULL) { |
| 1544 | 913 VERIFY(nvlist_add_uint64(*config, ZPOOL_CONFIG_ERRCOUNT, |
| 914 spa_get_errlog_size(spa)) == 0); | |
| 915 | |
| 2082 | 916 spa_add_spares(spa, *config); |
| 917 } | |
| 918 | |
| 1544 | 919 /* |
| 920 * We want to get the alternate root even for faulted pools, so we cheat | |
| 921 * and call spa_lookup() directly. | |
| 922 */ | |
| 923 if (altroot) { | |
| 924 if (spa == NULL) { | |
| 925 mutex_enter(&spa_namespace_lock); | |
| 926 spa = spa_lookup(name); | |
| 927 if (spa) | |
| 928 spa_altroot(spa, altroot, buflen); | |
| 929 else | |
| 930 altroot[0] = '\0'; | |
| 931 spa = NULL; | |
| 932 mutex_exit(&spa_namespace_lock); | |
| 933 } else { | |
| 934 spa_altroot(spa, altroot, buflen); | |
| 935 } | |
| 936 } | |
| 937 | |
| 789 | 938 if (spa != NULL) |
| 939 spa_close(spa, FTAG); | |
| 940 | |
| 941 return (error); | |
| 942 } | |
| 943 | |
| 944 /* | |
| 2082 | 945 * Validate that the 'spares' array is well formed. We must have an array of |
| 946 * nvlists, each which describes a valid leaf vdev. | |
| 947 */ | |
| 948 static int | |
| 949 spa_validate_spares(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
| 950 { | |
| 951 nvlist_t **spares; | |
| 952 uint_t i, nspares; | |
| 953 vdev_t *vd; | |
| 954 int error; | |
| 955 | |
| 956 /* | |
| 957 * It's acceptable to have no spares specified. | |
| 958 */ | |
| 959 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 960 &spares, &nspares) != 0) | |
| 961 return (0); | |
| 962 | |
| 963 if (nspares == 0) | |
| 964 return (EINVAL); | |
| 965 | |
| 966 /* | |
| 967 * Make sure the pool is formatted with a version that supports hot | |
| 968 * spares. | |
| 969 */ | |
| 970 if (spa_version(spa) < ZFS_VERSION_SPARES) | |
| 971 return (ENOTSUP); | |
| 972 | |
| 973 for (i = 0; i < nspares; i++) { | |
| 974 if ((error = spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
| 975 mode)) != 0) | |
| 976 return (error); | |
| 977 | |
| 978 if (!vd->vdev_ops->vdev_op_leaf) { | |
| 979 vdev_free(vd); | |
| 980 return (EINVAL); | |
| 981 } | |
| 982 | |
| 983 if ((error = vdev_open(vd)) != 0) { | |
| 984 vdev_free(vd); | |
| 985 return (error); | |
| 986 } | |
| 987 | |
| 988 vd->vdev_top = vd; | |
| 989 if ((error = vdev_label_spare(vd, crtxg)) != 0) { | |
| 990 vdev_free(vd); | |
| 991 return (error); | |
| 992 } | |
| 993 | |
| 994 VERIFY(nvlist_add_uint64(spares[i], ZPOOL_CONFIG_GUID, | |
| 995 vd->vdev_guid) == 0); | |
| 996 | |
| 997 vdev_free(vd); | |
| 998 } | |
| 999 | |
| 1000 return (0); | |
| 1001 } | |
| 1002 | |
| 1003 /* | |
| 789 | 1004 * Pool Creation |
| 1005 */ | |
| 1006 int | |
|
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1007 spa_create(const char *pool, nvlist_t *nvroot, const char *altroot) |
| 789 | 1008 { |
| 1009 spa_t *spa; | |
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1010 vdev_t *rvd; |
| 789 | 1011 dsl_pool_t *dp; |
| 1012 dmu_tx_t *tx; | |
| 2082 | 1013 int c, error = 0; |
| 789 | 1014 uint64_t txg = TXG_INITIAL; |
| 2082 | 1015 nvlist_t **spares; |
| 1016 uint_t nspares; | |
| 789 | 1017 |
| 1018 /* | |
| 1019 * If this pool already exists, return failure. | |
| 1020 */ | |
| 1021 mutex_enter(&spa_namespace_lock); | |
| 1022 if (spa_lookup(pool) != NULL) { | |
| 1023 mutex_exit(&spa_namespace_lock); | |
| 1024 return (EEXIST); | |
| 1025 } | |
| 1026 | |
| 1027 /* | |
| 1028 * Allocate a new spa_t structure. | |
| 1029 */ | |
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1030 spa = spa_add(pool, altroot); |
| 789 | 1031 spa_activate(spa); |
| 1032 | |
| 1033 spa->spa_uberblock.ub_txg = txg - 1; | |
| 1760 | 1034 spa->spa_uberblock.ub_version = ZFS_VERSION; |
| 789 | 1035 spa->spa_ubsync = spa->spa_uberblock; |
| 1036 | |
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1037 /* |
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1038 * Create the root vdev. |
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1039 */ |
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1040 spa_config_enter(spa, RW_WRITER, FTAG); |
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1041 |
| 2082 | 1042 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); |
| 1043 | |
| 1044 ASSERT(error != 0 || rvd != NULL); | |
| 1045 ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
| 1046 | |
| 1047 if (error == 0 && rvd->vdev_children == 0) | |
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1048 error = EINVAL; |
| 2082 | 1049 |
| 1050 if (error == 0 && | |
| 1051 (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
| 1052 (error = spa_validate_spares(spa, nvroot, txg, | |
| 1053 VDEV_ALLOC_ADD)) == 0) { | |
| 1054 for (c = 0; c < rvd->vdev_children; c++) | |
| 1055 vdev_init(rvd->vdev_child[c], txg); | |
| 1056 vdev_config_dirty(rvd); | |
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1057 } |
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1058 |
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1059 spa_config_exit(spa, FTAG); |
| 789 | 1060 |
| 2082 | 1061 if (error != 0) { |
| 789 | 1062 spa_unload(spa); |
| 1063 spa_deactivate(spa); | |
| 1064 spa_remove(spa); | |
| 1065 mutex_exit(&spa_namespace_lock); | |
| 1066 return (error); | |
| 1067 } | |
| 1068 | |
| 2082 | 1069 /* |
| 1070 * Get the list of spares, if specified. | |
| 1071 */ | |
| 1072 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1073 &spares, &nspares) == 0) { | |
| 1074 VERIFY(nvlist_alloc(&spa->spa_sparelist, NV_UNIQUE_NAME, | |
| 1075 KM_SLEEP) == 0); | |
| 1076 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1077 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1078 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1079 spa_load_spares(spa); | |
| 1080 spa_config_exit(spa, FTAG); | |
| 1081 spa->spa_sync_spares = B_TRUE; | |
| 1082 } | |
| 1083 | |
| 789 | 1084 spa->spa_dsl_pool = dp = dsl_pool_create(spa, txg); |
| 1085 spa->spa_meta_objset = dp->dp_meta_objset; | |
| 1086 | |
| 1087 tx = dmu_tx_create_assigned(dp, txg); | |
| 1088 | |
| 1089 /* | |
| 1090 * Create the pool config object. | |
| 1091 */ | |
| 1092 spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
| 1093 DMU_OT_PACKED_NVLIST, 1 << 14, | |
| 1094 DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); | |
| 1095 | |
| 1544 | 1096 if (zap_add(spa->spa_meta_objset, |
| 789 | 1097 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
| 1544 | 1098 sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { |
| 1099 cmn_err(CE_PANIC, "failed to add pool config"); | |
| 1100 } | |
| 789 | 1101 |
| 2082 | 1102 /* Newly created pools are always deflated. */ |
| 1103 spa->spa_deflate = TRUE; | |
| 1104 if (zap_add(spa->spa_meta_objset, | |
| 1105 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 1106 sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
| 1107 cmn_err(CE_PANIC, "failed to add deflate"); | |
| 1108 } | |
| 1109 | |
| 789 | 1110 /* |
| 1111 * Create the deferred-free bplist object. Turn off compression | |
| 1112 * because sync-to-convergence takes longer if the blocksize | |
| 1113 * keeps changing. | |
| 1114 */ | |
| 1115 spa->spa_sync_bplist_obj = bplist_create(spa->spa_meta_objset, | |
| 1116 1 << 14, tx); | |
| 1117 dmu_object_set_compress(spa->spa_meta_objset, spa->spa_sync_bplist_obj, | |
| 1118 ZIO_COMPRESS_OFF, tx); | |
| 1119 | |
| 1544 | 1120 if (zap_add(spa->spa_meta_objset, |
| 789 | 1121 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, |
| 1544 | 1122 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj, tx) != 0) { |
| 1123 cmn_err(CE_PANIC, "failed to add bplist"); | |
| 1124 } | |
| 789 | 1125 |
| 2926 | 1126 /* |
| 1127 * Create the pool's history object. | |
| 1128 */ | |
| 1129 spa_history_create_obj(spa, tx); | |
| 1130 | |
| 789 | 1131 dmu_tx_commit(tx); |
| 1132 | |
| 1133 spa->spa_sync_on = B_TRUE; | |
| 1134 txg_sync_start(spa->spa_dsl_pool); | |
| 1135 | |
| 1136 /* | |
| 1137 * We explicitly wait for the first transaction to complete so that our | |
| 1138 * bean counters are appropriately updated. | |
| 1139 */ | |
| 1140 txg_wait_synced(spa->spa_dsl_pool, txg); | |
| 1141 | |
| 1142 spa_config_sync(); | |
| 1143 | |
| 1144 mutex_exit(&spa_namespace_lock); | |
| 1145 | |
| 1146 return (0); | |
| 1147 } | |
| 1148 | |
| 1149 /* | |
| 1150 * Import the given pool into the system. We set up the necessary spa_t and | |
| 1151 * then call spa_load() to do the dirty work. | |
| 1152 */ | |
| 1153 int | |
|
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1154 spa_import(const char *pool, nvlist_t *config, const char *altroot) |
| 789 | 1155 { |
| 1156 spa_t *spa; | |
| 1157 int error; | |
| 2082 | 1158 nvlist_t *nvroot; |
| 1159 nvlist_t **spares; | |
| 1160 uint_t nspares; | |
| 789 | 1161 |
| 1162 if (!(spa_mode & FWRITE)) | |
| 1163 return (EROFS); | |
| 1164 | |
| 1165 /* | |
| 1166 * If a pool with this name exists, return failure. | |
| 1167 */ | |
| 1168 mutex_enter(&spa_namespace_lock); | |
| 1169 if (spa_lookup(pool) != NULL) { | |
| 1170 mutex_exit(&spa_namespace_lock); | |
| 1171 return (EEXIST); | |
| 1172 } | |
| 1173 | |
| 1174 /* | |
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1175 * Create and initialize the spa structure. |
| 789 | 1176 */ |
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1177 spa = spa_add(pool, altroot); |
| 789 | 1178 spa_activate(spa); |
| 1179 | |
| 1180 /* | |
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1181 * Pass off the heavy lifting to spa_load(). |
| 1732 | 1182 * Pass TRUE for mosconfig because the user-supplied config |
| 1183 * is actually the one to trust when doing an import. | |
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1184 */ |
| 1732 | 1185 error = spa_load(spa, config, SPA_LOAD_IMPORT, B_TRUE); |
| 789 | 1186 |
| 2082 | 1187 spa_config_enter(spa, RW_WRITER, FTAG); |
| 1188 /* | |
| 1189 * Toss any existing sparelist, as it doesn't have any validity anymore, | |
| 1190 * and conflicts with spa_has_spare(). | |
| 1191 */ | |
| 1192 if (spa->spa_sparelist) { | |
| 1193 nvlist_free(spa->spa_sparelist); | |
| 1194 spa->spa_sparelist = NULL; | |
| 1195 spa_load_spares(spa); | |
| 1196 } | |
| 1197 | |
| 1198 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
| 1199 &nvroot) == 0); | |
| 1200 if (error == 0) | |
| 1201 error = spa_validate_spares(spa, nvroot, -1ULL, | |
| 1202 VDEV_ALLOC_SPARE); | |
| 1203 spa_config_exit(spa, FTAG); | |
| 1204 | |
| 1205 if (error != 0) { | |
| 789 | 1206 spa_unload(spa); |
| 1207 spa_deactivate(spa); | |
| 1208 spa_remove(spa); | |
| 1209 mutex_exit(&spa_namespace_lock); | |
| 1210 return (error); | |
| 1211 } | |
| 1212 | |
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1213 /* |
| 2082 | 1214 * Override any spares as specified by the user, as these may have |
| 1215 * correct device names/devids, etc. | |
| 1216 */ | |
| 1217 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1218 &spares, &nspares) == 0) { | |
| 1219 if (spa->spa_sparelist) | |
| 1220 VERIFY(nvlist_remove(spa->spa_sparelist, | |
| 1221 ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 1222 else | |
| 1223 VERIFY(nvlist_alloc(&spa->spa_sparelist, | |
| 1224 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 1225 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1226 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1227 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1228 spa_load_spares(spa); | |
| 1229 spa_config_exit(spa, FTAG); | |
| 1230 spa->spa_sync_spares = B_TRUE; | |
| 1231 } | |
| 1232 | |
| 1233 /* | |
|
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1234 * Update the config cache to include the newly-imported pool. |
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1235 */ |
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1236 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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1237 |
| 789 | 1238 mutex_exit(&spa_namespace_lock); |
| 1239 | |
| 1240 /* | |
| 1241 * Resilver anything that's out of date. | |
| 1242 */ | |
| 1243 if (spa_mode & FWRITE) | |
| 1244 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 1245 | |
| 1246 return (0); | |
| 1247 } | |
| 1248 | |
| 1249 /* | |
| 1250 * This (illegal) pool name is used when temporarily importing a spa_t in order | |
| 1251 * to get the vdev stats associated with the imported devices. | |
| 1252 */ | |
| 1253 #define TRYIMPORT_NAME "$import" | |
| 1254 | |
| 1255 nvlist_t * | |
| 1256 spa_tryimport(nvlist_t *tryconfig) | |
| 1257 { | |
| 1258 nvlist_t *config = NULL; | |
| 1259 char *poolname; | |
| 1260 spa_t *spa; | |
| 1261 uint64_t state; | |
| 1262 | |
| 1263 if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
| 1264 return (NULL); | |
| 1265 | |
| 1266 if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
| 1267 return (NULL); | |
| 1268 | |
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1269 /* |
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1270 * Create and initialize the spa structure. |
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1271 */ |
| 789 | 1272 mutex_enter(&spa_namespace_lock); |
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1273 spa = spa_add(TRYIMPORT_NAME, NULL); |
| 789 | 1274 spa_activate(spa); |
| 1275 | |
| 1276 /* | |
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1277 * Pass off the heavy lifting to spa_load(). |
| 1732 | 1278 * Pass TRUE for mosconfig because the user-supplied config |
| 1279 * is actually the one to trust when doing an import. | |
| 789 | 1280 */ |
| 1732 | 1281 (void) spa_load(spa, tryconfig, SPA_LOAD_TRYIMPORT, B_TRUE); |
| 789 | 1282 |
| 1283 /* | |
| 1284 * If 'tryconfig' was at least parsable, return the current config. | |
| 1285 */ | |
| 1286 if (spa->spa_root_vdev != NULL) { | |
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1287 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 1288 config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
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1289 spa_config_exit(spa, FTAG); |
| 789 | 1290 VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
| 1291 poolname) == 0); | |
| 1292 VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
| 1293 state) == 0); | |
| 2082 | 1294 |
| 1295 /* | |
| 1296 * Add the list of hot spares. | |
| 1297 */ | |
| 1298 spa_add_spares(spa, config); | |
| 789 | 1299 } |
| 1300 | |
| 1301 spa_unload(spa); | |
| 1302 spa_deactivate(spa); | |
| 1303 spa_remove(spa); | |
| 1304 mutex_exit(&spa_namespace_lock); | |
| 1305 | |
| 1306 return (config); | |
| 1307 } | |
| 1308 | |
| 1309 /* | |
| 1310 * Pool export/destroy | |
| 1311 * | |
| 1312 * The act of destroying or exporting a pool is very simple. We make sure there | |
| 1313 * is no more pending I/O and any references to the pool are gone. Then, we | |
| 1314 * update the pool state and sync all the labels to disk, removing the | |
| 1315 * configuration from the cache afterwards. | |
| 1316 */ | |
| 1317 static int | |
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1318 spa_export_common(char *pool, int new_state, nvlist_t **oldconfig) |
| 789 | 1319 { |
| 1320 spa_t *spa; | |
| 1321 | |
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1322 if (oldconfig) |
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1323 *oldconfig = NULL; |
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1324 |
| 789 | 1325 if (!(spa_mode & FWRITE)) |
| 1326 return (EROFS); | |
| 1327 | |
| 1328 mutex_enter(&spa_namespace_lock); | |
| 1329 if ((spa = spa_lookup(pool)) == NULL) { | |
| 1330 mutex_exit(&spa_namespace_lock); | |
| 1331 return (ENOENT); | |
| 1332 } | |
| 1333 | |
| 1334 /* | |
| 1544 | 1335 * Put a hold on the pool, drop the namespace lock, stop async tasks, |
| 1336 * reacquire the namespace lock, and see if we can export. | |
| 1337 */ | |
| 1338 spa_open_ref(spa, FTAG); | |
| 1339 mutex_exit(&spa_namespace_lock); | |
| 1340 spa_async_suspend(spa); | |
| 1341 mutex_enter(&spa_namespace_lock); | |
| 1342 spa_close(spa, FTAG); | |
| 1343 | |
| 1344 /* | |
| 789 | 1345 * The pool will be in core if it's openable, |
| 1346 * in which case we can modify its state. | |
| 1347 */ | |
| 1348 if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) { | |
| 1349 /* | |
| 1350 * Objsets may be open only because they're dirty, so we | |
| 1351 * have to force it to sync before checking spa_refcnt. | |
| 1352 */ | |
| 1353 spa_scrub_suspend(spa); | |
| 1354 txg_wait_synced(spa->spa_dsl_pool, 0); | |
| 1355 | |
| 1544 | 1356 /* |
| 1357 * A pool cannot be exported or destroyed if there are active | |
| 1358 * references. If we are resetting a pool, allow references by | |
| 1359 * fault injection handlers. | |
| 1360 */ | |
| 1361 if (!spa_refcount_zero(spa) || | |
| 1362 (spa->spa_inject_ref != 0 && | |
| 1363 new_state != POOL_STATE_UNINITIALIZED)) { | |
| 789 | 1364 spa_scrub_resume(spa); |
| 1544 | 1365 spa_async_resume(spa); |
| 789 | 1366 mutex_exit(&spa_namespace_lock); |
| 1367 return (EBUSY); | |
| 1368 } | |
| 1369 | |
| 1370 spa_scrub_resume(spa); | |
| 1371 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); | |
| 1372 | |
| 1373 /* | |
| 1374 * We want this to be reflected on every label, | |
| 1375 * so mark them all dirty. spa_unload() will do the | |
| 1376 * final sync that pushes these changes out. | |
| 1377 */ | |
| 1544 | 1378 if (new_state != POOL_STATE_UNINITIALIZED) { |
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1379 spa_config_enter(spa, RW_WRITER, FTAG); |
| 1544 | 1380 spa->spa_state = new_state; |
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1381 spa->spa_final_txg = spa_last_synced_txg(spa) + 1; |
| 1544 | 1382 vdev_config_dirty(spa->spa_root_vdev); |
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1383 spa_config_exit(spa, FTAG); |
| 1544 | 1384 } |
| 789 | 1385 } |
| 1386 | |
| 1387 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
| 1388 spa_unload(spa); | |
| 1389 spa_deactivate(spa); | |
| 1390 } | |
| 1391 | |
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1392 if (oldconfig && spa->spa_config) |
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1393 VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); |
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1394 |
| 1544 | 1395 if (new_state != POOL_STATE_UNINITIALIZED) { |
| 1396 spa_remove(spa); | |
| 1397 spa_config_sync(); | |
| 1398 } | |
| 789 | 1399 mutex_exit(&spa_namespace_lock); |
| 1400 | |
| 1401 return (0); | |
| 1402 } | |
| 1403 | |
| 1404 /* | |
| 1405 * Destroy a storage pool. | |
| 1406 */ | |
| 1407 int | |
| 1408 spa_destroy(char *pool) | |
| 1409 { | |
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1410 return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL)); |
| 789 | 1411 } |
| 1412 | |
| 1413 /* | |
| 1414 * Export a storage pool. | |
| 1415 */ | |
| 1416 int | |
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1417 spa_export(char *pool, nvlist_t **oldconfig) |
| 789 | 1418 { |
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1419 return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig)); |
| 789 | 1420 } |
| 1421 | |
| 1422 /* | |
| 1544 | 1423 * Similar to spa_export(), this unloads the spa_t without actually removing it |
| 1424 * from the namespace in any way. | |
| 1425 */ | |
| 1426 int | |
| 1427 spa_reset(char *pool) | |
| 1428 { | |
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1429 return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL)); |
| 1544 | 1430 } |
| 1431 | |
| 1432 | |
| 1433 /* | |
| 789 | 1434 * ========================================================================== |
| 1435 * Device manipulation | |
| 1436 * ========================================================================== | |
| 1437 */ | |
| 1438 | |
| 1439 /* | |
| 1440 * Add capacity to a storage pool. | |
| 1441 */ | |
| 1442 int | |
| 1443 spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
| 1444 { | |
| 1445 uint64_t txg; | |
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1446 int c, error; |
| 789 | 1447 vdev_t *rvd = spa->spa_root_vdev; |
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1448 vdev_t *vd, *tvd; |
| 2082 | 1449 nvlist_t **spares; |
| 1450 uint_t i, nspares; | |
| 789 | 1451 |
| 1452 txg = spa_vdev_enter(spa); | |
| 1453 | |
| 2082 | 1454 if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, |
| 1455 VDEV_ALLOC_ADD)) != 0) | |
| 1456 return (spa_vdev_exit(spa, NULL, txg, error)); | |
| 1457 | |
| 1458 if ((error = spa_validate_spares(spa, nvroot, txg, | |
| 1459 VDEV_ALLOC_ADD)) != 0) | |
| 789 | 1460 return (spa_vdev_exit(spa, vd, txg, error)); |
| 1461 | |
| 2082 | 1462 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, |
| 1463 &spares, &nspares) != 0) | |
| 1464 nspares = 0; | |
| 1465 | |
| 1466 if (vd->vdev_children == 0 && nspares == 0) | |
| 1467 return (spa_vdev_exit(spa, vd, txg, EINVAL)); | |
| 1468 | |
| 1469 if (vd->vdev_children != 0) { | |
| 1470 if ((error = vdev_create(vd, txg, B_FALSE)) != 0) | |
| 1471 return (spa_vdev_exit(spa, vd, txg, error)); | |
| 1472 | |
| 1473 /* | |
| 1474 * Transfer each new top-level vdev from vd to rvd. | |
| 1475 */ | |
| 1476 for (c = 0; c < vd->vdev_children; c++) { | |
| 1477 tvd = vd->vdev_child[c]; | |
| 1478 vdev_remove_child(vd, tvd); | |
| 1479 tvd->vdev_id = rvd->vdev_children; | |
| 1480 vdev_add_child(rvd, tvd); | |
| 1481 vdev_config_dirty(tvd); | |
| 1482 } | |
| 1483 } | |
| 1484 | |
| 1485 if (nspares != 0) { | |
| 1486 if (spa->spa_sparelist != NULL) { | |
| 1487 nvlist_t **oldspares; | |
| 1488 uint_t oldnspares; | |
| 1489 nvlist_t **newspares; | |
| 1490 | |
| 1491 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 1492 ZPOOL_CONFIG_SPARES, &oldspares, &oldnspares) == 0); | |
| 1493 | |
| 1494 newspares = kmem_alloc(sizeof (void *) * | |
| 1495 (nspares + oldnspares), KM_SLEEP); | |
| 1496 for (i = 0; i < oldnspares; i++) | |
| 1497 VERIFY(nvlist_dup(oldspares[i], | |
| 1498 &newspares[i], KM_SLEEP) == 0); | |
| 1499 for (i = 0; i < nspares; i++) | |
| 1500 VERIFY(nvlist_dup(spares[i], | |
| 1501 &newspares[i + oldnspares], | |
| 1502 KM_SLEEP) == 0); | |
| 1503 | |
| 1504 VERIFY(nvlist_remove(spa->spa_sparelist, | |
| 1505 ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 1506 | |
| 1507 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1508 ZPOOL_CONFIG_SPARES, newspares, | |
| 1509 nspares + oldnspares) == 0); | |
| 1510 for (i = 0; i < oldnspares + nspares; i++) | |
| 1511 nvlist_free(newspares[i]); | |
| 1512 kmem_free(newspares, (oldnspares + nspares) * | |
| 1513 sizeof (void *)); | |
| 1514 } else { | |
| 1515 VERIFY(nvlist_alloc(&spa->spa_sparelist, | |
| 1516 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 1517 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1518 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1519 } | |
| 1520 | |
| 1521 spa_load_spares(spa); | |
| 1522 spa->spa_sync_spares = B_TRUE; | |
| 789 | 1523 } |
| 1524 | |
| 1525 /* | |
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1526 * We have to be careful when adding new vdevs to an existing pool. |
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1527 * If other threads start allocating from these vdevs before we |
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1528 * sync the config cache, and we lose power, then upon reboot we may |
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1529 * fail to open the pool because there are DVAs that the config cache |
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1530 * can't translate. Therefore, we first add the vdevs without |
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1531 * initializing metaslabs; sync the config cache (via spa_vdev_exit()); |
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1532 * and then let spa_config_update() initialize the new metaslabs. |
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1533 * |
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1534 * spa_load() checks for added-but-not-initialized vdevs, so that |
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1535 * if we lose power at any point in this sequence, the remaining |
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1536 * steps will be completed the next time we load the pool. |
| 789 | 1537 */ |
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1538 (void) spa_vdev_exit(spa, vd, txg, 0); |
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1539 |
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1540 mutex_enter(&spa_namespace_lock); |
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1541 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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1542 mutex_exit(&spa_namespace_lock); |
| 789 | 1543 |
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1544 return (0); |
| 789 | 1545 } |
| 1546 | |
| 1547 /* | |
| 1548 * Attach a device to a mirror. The arguments are the path to any device | |
| 1549 * in the mirror, and the nvroot for the new device. If the path specifies | |
| 1550 * a device that is not mirrored, we automatically insert the mirror vdev. | |
| 1551 * | |
| 1552 * If 'replacing' is specified, the new device is intended to replace the | |
| 1553 * existing device; in this case the two devices are made into their own | |
| 1554 * mirror using the 'replacing' vdev, which is functionally idendical to | |
| 1555 * the mirror vdev (it actually reuses all the same ops) but has a few | |
| 1556 * extra rules: you can't attach to it after it's been created, and upon | |
| 1557 * completion of resilvering, the first disk (the one being replaced) | |
| 1558 * is automatically detached. | |
| 1559 */ | |
| 1560 int | |
| 1544 | 1561 spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) |
| 789 | 1562 { |
| 1563 uint64_t txg, open_txg; | |
| 1564 int error; | |
| 1565 vdev_t *rvd = spa->spa_root_vdev; | |
| 1566 vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; | |
| 2082 | 1567 vdev_ops_t *pvops; |
| 789 | 1568 |
| 1569 txg = spa_vdev_enter(spa); | |
| 1570 | |
| 1544 | 1571 oldvd = vdev_lookup_by_guid(rvd, guid); |
| 789 | 1572 |
| 1573 if (oldvd == NULL) | |
| 1574 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
| 1575 | |
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1576 if (!oldvd->vdev_ops->vdev_op_leaf) |
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1577 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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1578 |
| 789 | 1579 pvd = oldvd->vdev_parent; |
| 1580 | |
| 2082 | 1581 if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, |
| 1582 VDEV_ALLOC_ADD)) != 0 || newrootvd->vdev_children != 1) | |
| 789 | 1583 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); |
| 1584 | |
| 1585 newvd = newrootvd->vdev_child[0]; | |
| 1586 | |
| 1587 if (!newvd->vdev_ops->vdev_op_leaf) | |
| 1588 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
| 1589 | |
| 2082 | 1590 if ((error = vdev_create(newrootvd, txg, replacing)) != 0) |
| 789 | 1591 return (spa_vdev_exit(spa, newrootvd, txg, error)); |
| 1592 | |
| 2082 | 1593 if (!replacing) { |
| 1594 /* | |
| 1595 * For attach, the only allowable parent is a mirror or the root | |
| 1596 * vdev. | |
| 1597 */ | |
| 1598 if (pvd->vdev_ops != &vdev_mirror_ops && | |
| 1599 pvd->vdev_ops != &vdev_root_ops) | |
| 1600 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1601 | |
| 1602 pvops = &vdev_mirror_ops; | |
| 1603 } else { | |
| 1604 /* | |
| 1605 * Active hot spares can only be replaced by inactive hot | |
| 1606 * spares. | |
| 1607 */ | |
| 1608 if (pvd->vdev_ops == &vdev_spare_ops && | |
| 1609 pvd->vdev_child[1] == oldvd && | |
| 1610 !spa_has_spare(spa, newvd->vdev_guid)) | |
| 1611 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1612 | |
| 1613 /* | |
| 1614 * If the source is a hot spare, and the parent isn't already a | |
| 1615 * spare, then we want to create a new hot spare. Otherwise, we | |
| 1616 * want to create a replacing vdev. | |
| 1617 */ | |
| 1618 if (pvd->vdev_ops == &vdev_replacing_ops) | |
| 1619 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1620 else if (pvd->vdev_ops != &vdev_spare_ops && | |
| 1621 newvd->vdev_isspare) | |
| 1622 pvops = &vdev_spare_ops; | |
| 1623 else | |
| 1624 pvops = &vdev_replacing_ops; | |
| 1625 } | |
| 1626 | |
|
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1627 /* |
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1628 * Compare the new device size with the replaceable/attachable |
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1629 * device size. |
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1630 */ |
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1631 if (newvd->vdev_psize < vdev_get_rsize(oldvd)) |
| 789 | 1632 return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
| 1633 | |
| 1732 | 1634 /* |
| 1635 * The new device cannot have a higher alignment requirement | |
| 1636 * than the top-level vdev. | |
| 1637 */ | |
| 1638 if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
| 789 | 1639 return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); |
| 1640 | |
| 1641 /* | |
| 1642 * If this is an in-place replacement, update oldvd's path and devid | |
| 1643 * to make it distinguishable from newvd, and unopenable from now on. | |
| 1644 */ | |
| 1645 if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
| 1646 spa_strfree(oldvd->vdev_path); | |
| 1647 oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
| 1648 KM_SLEEP); | |
| 1649 (void) sprintf(oldvd->vdev_path, "%s/%s", | |
| 1650 newvd->vdev_path, "old"); | |
| 1651 if (oldvd->vdev_devid != NULL) { | |
| 1652 spa_strfree(oldvd->vdev_devid); | |
| 1653 oldvd->vdev_devid = NULL; | |
| 1654 } | |
| 1655 } | |
| 1656 | |
| 1657 /* | |
| 2082 | 1658 * If the parent is not a mirror, or if we're replacing, insert the new |
| 1659 * mirror/replacing/spare vdev above oldvd. | |
| 789 | 1660 */ |
| 1661 if (pvd->vdev_ops != pvops) | |
| 1662 pvd = vdev_add_parent(oldvd, pvops); | |
| 1663 | |
| 1664 ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
| 1665 ASSERT(pvd->vdev_ops == pvops); | |
| 1666 ASSERT(oldvd->vdev_parent == pvd); | |
| 1667 | |
| 1668 /* | |
| 1669 * Extract the new device from its root and add it to pvd. | |
| 1670 */ | |
| 1671 vdev_remove_child(newrootvd, newvd); | |
| 1672 newvd->vdev_id = pvd->vdev_children; | |
| 1673 vdev_add_child(pvd, newvd); | |
| 1674 | |
| 1544 | 1675 /* |
| 1676 * If newvd is smaller than oldvd, but larger than its rsize, | |
| 1677 * the addition of newvd may have decreased our parent's asize. | |
| 1678 */ | |
| 1679 pvd->vdev_asize = MIN(pvd->vdev_asize, newvd->vdev_asize); | |
| 1680 | |
| 789 | 1681 tvd = newvd->vdev_top; |
| 1682 ASSERT(pvd->vdev_top == tvd); | |
| 1683 ASSERT(tvd->vdev_parent == rvd); | |
| 1684 | |
| 1685 vdev_config_dirty(tvd); | |
| 1686 | |
| 1687 /* | |
| 1688 * Set newvd's DTL to [TXG_INITIAL, open_txg]. It will propagate | |
| 1689 * upward when spa_vdev_exit() calls vdev_dtl_reassess(). | |
| 1690 */ | |
| 1691 open_txg = txg + TXG_CONCURRENT_STATES - 1; | |
| 1692 | |
| 1693 mutex_enter(&newvd->vdev_dtl_lock); | |
| 1694 space_map_add(&newvd->vdev_dtl_map, TXG_INITIAL, | |
| 1695 open_txg - TXG_INITIAL + 1); | |
| 1696 mutex_exit(&newvd->vdev_dtl_lock); | |
| 1697 | |
| 1544 | 1698 dprintf("attached %s in txg %llu\n", newvd->vdev_path, txg); |
| 1699 | |
| 789 | 1700 /* |
| 1701 * Mark newvd's DTL dirty in this txg. | |
| 1702 */ | |
| 1732 | 1703 vdev_dirty(tvd, VDD_DTL, newvd, txg); |
| 789 | 1704 |
| 1705 (void) spa_vdev_exit(spa, newrootvd, open_txg, 0); | |
| 1706 | |
| 1707 /* | |
| 1708 * Kick off a resilver to update newvd. | |
| 1709 */ | |
| 1710 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 1711 | |
| 1712 return (0); | |
| 1713 } | |
| 1714 | |
| 1715 /* | |
| 1716 * Detach a device from a mirror or replacing vdev. | |
| 1717 * If 'replace_done' is specified, only detach if the parent | |
| 1718 * is a replacing vdev. | |
| 1719 */ | |
| 1720 int | |
| 1544 | 1721 spa_vdev_detach(spa_t *spa, uint64_t guid, int replace_done) |
| 789 | 1722 { |
| 1723 uint64_t txg; | |
| 1724 int c, t, error; | |
| 1725 vdev_t *rvd = spa->spa_root_vdev; | |
| 1726 vdev_t *vd, *pvd, *cvd, *tvd; | |
| 2082 | 1727 boolean_t unspare = B_FALSE; |
| 1728 uint64_t unspare_guid; | |
| 789 | 1729 |
| 1730 txg = spa_vdev_enter(spa); | |
| 1731 | |
| 1544 | 1732 vd = vdev_lookup_by_guid(rvd, guid); |
| 789 | 1733 |
| 1734 if (vd == NULL) | |
| 1735 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
| 1736 | |
|
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1738 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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1739 |
| 789 | 1740 pvd = vd->vdev_parent; |
| 1741 | |
| 1742 /* | |
| 1743 * If replace_done is specified, only remove this device if it's | |
| 2082 | 1744 * the first child of a replacing vdev. For the 'spare' vdev, either |
| 1745 * disk can be removed. | |
| 789 | 1746 */ |
| 2082 | 1747 if (replace_done) { |
| 1748 if (pvd->vdev_ops == &vdev_replacing_ops) { | |
| 1749 if (vd->vdev_id != 0) | |
| 1750 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
| 1751 } else if (pvd->vdev_ops != &vdev_spare_ops) { | |
| 1752 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
| 1753 } | |
| 1754 } | |
| 1755 | |
| 1756 ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
| 1757 spa_version(spa) >= ZFS_VERSION_SPARES); | |
| 789 | 1758 |
| 1759 /* | |
| 2082 | 1760 * Only mirror, replacing, and spare vdevs support detach. |
| 789 | 1761 */ |
| 1762 if (pvd->vdev_ops != &vdev_replacing_ops && | |
| 2082 | 1763 pvd->vdev_ops != &vdev_mirror_ops && |
| 1764 pvd->vdev_ops != &vdev_spare_ops) | |
| 789 | 1765 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
| 1766 | |
| 1767 /* | |
| 1768 * If there's only one replica, you can't detach it. | |
| 1769 */ | |
| 1770 if (pvd->vdev_children <= 1) | |
| 1771 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
| 1772 | |
| 1773 /* | |
| 1774 * If all siblings have non-empty DTLs, this device may have the only | |
| 1775 * valid copy of the data, which means we cannot safely detach it. | |
| 1776 * | |
| 1777 * XXX -- as in the vdev_offline() case, we really want a more | |
| 1778 * precise DTL check. | |
| 1779 */ | |
| 1780 for (c = 0; c < pvd->vdev_children; c++) { | |
| 1781 uint64_t dirty; | |
| 1782 | |
| 1783 cvd = pvd->vdev_child[c]; | |
| 1784 if (cvd == vd) | |
| 1785 continue; | |
| 1786 if (vdev_is_dead(cvd)) | |
| 1787 continue; | |
| 1788 mutex_enter(&cvd->vdev_dtl_lock); | |
| 1789 dirty = cvd->vdev_dtl_map.sm_space | | |
| 1790 cvd->vdev_dtl_scrub.sm_space; | |
| 1791 mutex_exit(&cvd->vdev_dtl_lock); | |
| 1792 if (!dirty) | |
| 1793 break; | |
| 1794 } | |
| 2082 | 1795 |
| 1796 /* | |
| 1797 * If we are a replacing or spare vdev, then we can always detach the | |
| 1798 * latter child, as that is how one cancels the operation. | |
| 1799 */ | |
| 1800 if ((pvd->vdev_ops == &vdev_mirror_ops || vd->vdev_id != 1) && | |
| 1801 c == pvd->vdev_children) | |
| 789 | 1802 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
| 1803 | |
| 1804 /* | |
| 2082 | 1805 * If we are detaching the original disk from a spare, then it implies |
| 1806 * that the spare should become a real disk, and be removed from the | |
| 1807 * active spare list for the pool. | |
| 1808 */ | |
| 1809 if (pvd->vdev_ops == &vdev_spare_ops && | |
| 1810 vd->vdev_id == 0) | |
| 1811 unspare = B_TRUE; | |
| 1812 | |
| 1813 /* | |
| 789 | 1814 * Erase the disk labels so the disk can be used for other things. |
| 1815 * This must be done after all other error cases are handled, | |
| 1816 * but before we disembowel vd (so we can still do I/O to it). | |
| 1817 * But if we can't do it, don't treat the error as fatal -- | |
| 1818 * it may be that the unwritability of the disk is the reason | |
| 1819 * it's being detached! | |
| 1820 */ | |
| 2082 | 1821 error = vdev_label_init(vd, 0, B_FALSE); |
| 789 | 1822 if (error) |
| 1823 dprintf("unable to erase labels on %s\n", vdev_description(vd)); | |
| 1824 | |
| 1825 /* | |
| 1826 * Remove vd from its parent and compact the parent's children. | |
| 1827 */ | |
| 1828 vdev_remove_child(pvd, vd); | |
| 1829 vdev_compact_children(pvd); | |
| 1830 | |
| 1831 /* | |
| 1832 * Remember one of the remaining children so we can get tvd below. | |
| 1833 */ | |
| 1834 cvd = pvd->vdev_child[0]; | |
| 1835 | |
| 1836 /* | |
| 2082 | 1837 * If we need to remove the remaining child from the list of hot spares, |
| 1838 * do it now, marking the vdev as no longer a spare in the process. We | |
| 1839 * must do this before vdev_remove_parent(), because that can change the | |
| 1840 * GUID if it creates a new toplevel GUID. | |
| 1841 */ | |
| 1842 if (unspare) { | |
| 1843 ASSERT(cvd->vdev_isspare); | |
| 1844 spa_spare_remove(cvd->vdev_guid); | |
| 1845 cvd->vdev_isspare = B_FALSE; | |
| 1846 unspare_guid = cvd->vdev_guid; | |
| 1847 } | |
| 1848 | |
| 1849 /* | |
| 789 | 1850 * If the parent mirror/replacing vdev only has one child, |
| 1851 * the parent is no longer needed. Remove it from the tree. | |
| 1852 */ | |
| 1853 if (pvd->vdev_children == 1) | |
| 1854 vdev_remove_parent(cvd); | |
| 1855 | |
| 1856 /* | |
| 1857 * We don't set tvd until now because the parent we just removed | |
| 1858 * may have been the previous top-level vdev. | |
| 1859 */ | |
| 1860 tvd = cvd->vdev_top; | |
| 1861 ASSERT(tvd->vdev_parent == rvd); | |
| 1862 | |
| 1863 /* | |
| 1864 * Reopen this top-level vdev to reassess health after detach. | |
| 1865 */ | |
| 1544 | 1866 vdev_reopen(tvd); |
| 789 | 1867 |
| 1868 /* | |
| 1869 * If the device we just detached was smaller than the others, | |
| 1732 | 1870 * it may be possible to add metaslabs (i.e. grow the pool). |
| 1871 * vdev_metaslab_init() can't fail because the existing metaslabs | |
| 1872 * are already in core, so there's nothing to read from disk. | |
| 789 | 1873 */ |
| 1732 | 1874 VERIFY(vdev_metaslab_init(tvd, txg) == 0); |
| 789 | 1875 |
| 1876 vdev_config_dirty(tvd); | |
| 1877 | |
| 1878 /* | |
| 1879 * Mark vd's DTL as dirty in this txg. | |
| 1880 * vdev_dtl_sync() will see that vd->vdev_detached is set | |
| 1881 * and free vd's DTL object in syncing context. | |
| 1882 * But first make sure we're not on any *other* txg's DTL list, | |
| 1883 * to prevent vd from being accessed after it's freed. | |
| 1884 */ | |
| 1885 for (t = 0; t < TXG_SIZE; t++) | |
| 1886 (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); | |
| 1732 | 1887 vd->vdev_detached = B_TRUE; |
| 1888 vdev_dirty(tvd, VDD_DTL, vd, txg); | |
| 789 | 1889 |
| 1544 | 1890 dprintf("detached %s in txg %llu\n", vd->vdev_path, txg); |
| 789 | 1891 |
| 2082 | 1892 error = spa_vdev_exit(spa, vd, txg, 0); |
| 1893 | |
| 1894 /* | |
| 1895 * If we are supposed to remove the given vdev from the list of spares, | |
| 1896 * iterate over all pools in the system and replace it if it's present. | |
| 1897 */ | |
| 1898 if (unspare) { | |
| 1899 spa = NULL; | |
| 1900 mutex_enter(&spa_namespace_lock); | |
| 1901 while ((spa = spa_next(spa)) != NULL) { | |
| 1902 if (spa->spa_state != POOL_STATE_ACTIVE) | |
| 1903 continue; | |
| 1904 | |
| 1905 (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); | |
| 1906 } | |
| 1907 mutex_exit(&spa_namespace_lock); | |
| 1908 } | |
| 1909 | |
| 1910 return (error); | |
| 1911 } | |
| 1912 | |
| 1913 /* | |
| 1914 * Remove a device from the pool. Currently, this supports removing only hot | |
| 1915 * spares. | |
| 1916 */ | |
| 1917 int | |
| 1918 spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) | |
| 1919 { | |
| 1920 vdev_t *vd; | |
| 1921 nvlist_t **spares, *nv, **newspares; | |
| 1922 uint_t i, j, nspares; | |
| 1923 int ret = 0; | |
| 1924 | |
| 1925 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1926 | |
| 1927 vd = spa_lookup_by_guid(spa, guid); | |
| 1928 | |
| 1929 nv = NULL; | |
| 1930 if (spa->spa_spares != NULL && | |
| 1931 nvlist_lookup_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 1932 &spares, &nspares) == 0) { | |
| 1933 for (i = 0; i < nspares; i++) { | |
| 1934 uint64_t theguid; | |
| 1935 | |
| 1936 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 1937 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
| 1938 if (theguid == guid) { | |
| 1939 nv = spares[i]; | |
| 1940 break; | |
| 1941 } | |
| 1942 } | |
| 1943 } | |
| 1944 | |
| 1945 /* | |
| 1946 * We only support removing a hot spare, and only if it's not currently | |
| 1947 * in use in this pool. | |
| 1948 */ | |
| 1949 if (nv == NULL && vd == NULL) { | |
| 1950 ret = ENOENT; | |
| 1951 goto out; | |
| 1952 } | |
| 1953 | |
| 1954 if (nv == NULL && vd != NULL) { | |
| 1955 ret = ENOTSUP; | |
| 1956 goto out; | |
| 1957 } | |
| 1958 | |
| 1959 if (!unspare && nv != NULL && vd != NULL) { | |
| 1960 ret = EBUSY; | |
| 1961 goto out; | |
| 1962 } | |
| 1963 | |
| 1964 if (nspares == 1) { | |
| 1965 newspares = NULL; | |
| 1966 } else { | |
| 1967 newspares = kmem_alloc((nspares - 1) * sizeof (void *), | |
| 1968 KM_SLEEP); | |
| 1969 for (i = 0, j = 0; i < nspares; i++) { | |
| 1970 if (spares[i] != nv) | |
| 1971 VERIFY(nvlist_dup(spares[i], | |
| 1972 &newspares[j++], KM_SLEEP) == 0); | |
| 1973 } | |
| 1974 } | |
| 1975 | |
| 1976 VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 1977 DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 1978 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 1979 newspares, nspares - 1) == 0); | |
| 1980 for (i = 0; i < nspares - 1; i++) | |
| 1981 nvlist_free(newspares[i]); | |
| 1982 kmem_free(newspares, (nspares - 1) * sizeof (void *)); | |
| 1983 spa_load_spares(spa); | |
| 1984 spa->spa_sync_spares = B_TRUE; | |
| 1985 | |
| 1986 out: | |
| 1987 spa_config_exit(spa, FTAG); | |
| 1988 | |
| 1989 return (ret); | |
| 789 | 1990 } |
| 1991 | |
| 1992 /* | |
| 1544 | 1993 * Find any device that's done replacing, so we can detach it. |
| 789 | 1994 */ |
| 1544 | 1995 static vdev_t * |
| 1996 spa_vdev_replace_done_hunt(vdev_t *vd) | |
| 789 | 1997 { |
| 1544 | 1998 vdev_t *newvd, *oldvd; |
| 789 | 1999 int c; |
| 2000 | |
| 1544 | 2001 for (c = 0; c < vd->vdev_children; c++) { |
| 2002 oldvd = spa_vdev_replace_done_hunt(vd->vdev_child[c]); | |
| 2003 if (oldvd != NULL) | |
| 2004 return (oldvd); | |
| 2005 } | |
| 789 | 2006 |
| 2007 if (vd->vdev_ops == &vdev_replacing_ops && vd->vdev_children == 2) { | |
| 1544 | 2008 oldvd = vd->vdev_child[0]; |
| 2009 newvd = vd->vdev_child[1]; | |
| 789 | 2010 |
| 1544 | 2011 mutex_enter(&newvd->vdev_dtl_lock); |
| 2012 if (newvd->vdev_dtl_map.sm_space == 0 && | |
| 2013 newvd->vdev_dtl_scrub.sm_space == 0) { | |
| 2014 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2015 return (oldvd); | |
| 2016 } | |
| 2017 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2018 } | |
| 789 | 2019 |
| 1544 | 2020 return (NULL); |
| 789 | 2021 } |
| 2022 | |
| 1544 | 2023 static void |
| 789 | 2024 spa_vdev_replace_done(spa_t *spa) |
| 2025 { | |
| 1544 | 2026 vdev_t *vd; |
| 2082 | 2027 vdev_t *pvd; |
| 1544 | 2028 uint64_t guid; |
| 2082 | 2029 uint64_t pguid = 0; |
| 789 | 2030 |
| 1544 | 2031 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2032 |
| 1544 | 2033 while ((vd = spa_vdev_replace_done_hunt(spa->spa_root_vdev)) != NULL) { |
| 2034 guid = vd->vdev_guid; | |
| 2082 | 2035 /* |
| 2036 * If we have just finished replacing a hot spared device, then | |
| 2037 * we need to detach the parent's first child (the original hot | |
| 2038 * spare) as well. | |
| 2039 */ | |
| 2040 pvd = vd->vdev_parent; | |
| 2041 if (pvd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
| 2042 pvd->vdev_id == 0) { | |
| 2043 ASSERT(pvd->vdev_ops == &vdev_replacing_ops); | |
| 2044 ASSERT(pvd->vdev_parent->vdev_children == 2); | |
| 2045 pguid = pvd->vdev_parent->vdev_child[1]->vdev_guid; | |
| 2046 } | |
| 1544 | 2047 spa_config_exit(spa, FTAG); |
| 2048 if (spa_vdev_detach(spa, guid, B_TRUE) != 0) | |
| 2049 return; | |
| 2082 | 2050 if (pguid != 0 && spa_vdev_detach(spa, pguid, B_TRUE) != 0) |
| 2051 return; | |
| 1544 | 2052 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2053 } |
| 2054 | |
| 1544 | 2055 spa_config_exit(spa, FTAG); |
| 789 | 2056 } |
| 2057 | |
| 2058 /* | |
|
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2059 * Update the stored path for this vdev. Dirty the vdev configuration, relying |
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2060 * on spa_vdev_enter/exit() to synchronize the labels and cache. |
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2061 */ |
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2062 int |
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2063 spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) |
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2064 { |
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2065 vdev_t *rvd, *vd; |
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2066 uint64_t txg; |
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2067 |
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2068 rvd = spa->spa_root_vdev; |
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2069 |
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2070 txg = spa_vdev_enter(spa); |
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2071 |
| 2082 | 2072 if ((vd = vdev_lookup_by_guid(rvd, guid)) == NULL) { |
| 2073 /* | |
| 2074 * Determine if this is a reference to a hot spare. In that | |
| 2075 * case, update the path as stored in the spare list. | |
| 2076 */ | |
| 2077 nvlist_t **spares; | |
| 2078 uint_t i, nspares; | |
| 2079 if (spa->spa_sparelist != NULL) { | |
| 2080 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 2081 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 2082 for (i = 0; i < nspares; i++) { | |
| 2083 uint64_t theguid; | |
| 2084 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 2085 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
| 2086 if (theguid == guid) | |
| 2087 break; | |
| 2088 } | |
| 2089 | |
| 2090 if (i == nspares) | |
| 2091 return (spa_vdev_exit(spa, NULL, txg, ENOENT)); | |
| 2092 | |
| 2093 VERIFY(nvlist_add_string(spares[i], | |
| 2094 ZPOOL_CONFIG_PATH, newpath) == 0); | |
| 2095 spa_load_spares(spa); | |
| 2096 spa->spa_sync_spares = B_TRUE; | |
| 2097 return (spa_vdev_exit(spa, NULL, txg, 0)); | |
| 2098 } else { | |
| 2099 return (spa_vdev_exit(spa, NULL, txg, ENOENT)); | |
| 2100 } | |
| 2101 } | |
|
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2102 |
|
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2103 if (!vd->vdev_ops->vdev_op_leaf) |
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2104 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
|
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2105 |
|
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2106 spa_strfree(vd->vdev_path); |
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2107 vd->vdev_path = spa_strdup(newpath); |
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2108 |
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2109 vdev_config_dirty(vd->vdev_top); |
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2110 |
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2111 return (spa_vdev_exit(spa, NULL, txg, 0)); |
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2112 } |
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2113 |
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2114 /* |
| 789 | 2115 * ========================================================================== |
| 2116 * SPA Scrubbing | |
| 2117 * ========================================================================== | |
| 2118 */ | |
| 2119 | |
| 1544 | 2120 void |
| 2121 spa_scrub_throttle(spa_t *spa, int direction) | |
| 2122 { | |
| 2123 mutex_enter(&spa->spa_scrub_lock); | |
| 2124 spa->spa_scrub_throttled += direction; | |
| 2125 ASSERT(spa->spa_scrub_throttled >= 0); | |
| 2126 if (spa->spa_scrub_throttled == 0) | |
| 2127 cv_broadcast(&spa->spa_scrub_io_cv); | |
| 2128 mutex_exit(&spa->spa_scrub_lock); | |
| 2129 } | |
| 789 | 2130 |
| 2131 static void | |
| 2132 spa_scrub_io_done(zio_t *zio) | |
| 2133 { | |
| 2134 spa_t *spa = zio->io_spa; | |
| 2135 | |
| 2136 zio_buf_free(zio->io_data, zio->io_size); | |
| 2137 | |
| 2138 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2139 if (zio->io_error && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { |
|
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2140 vdev_t *vd = zio->io_vd ? zio->io_vd : spa->spa_root_vdev; |
| 789 | 2141 spa->spa_scrub_errors++; |
| 2142 mutex_enter(&vd->vdev_stat_lock); | |
| 2143 vd->vdev_stat.vs_scrub_errors++; | |
| 2144 mutex_exit(&vd->vdev_stat_lock); | |
| 2145 } | |
| 1544 | 2146 if (--spa->spa_scrub_inflight == 0) { |
| 2147 cv_broadcast(&spa->spa_scrub_io_cv); | |
| 2148 ASSERT(spa->spa_scrub_throttled == 0); | |
| 2149 } | |
| 2150 mutex_exit(&spa->spa_scrub_lock); | |
| 789 | 2151 } |
| 2152 | |
| 2153 static void | |
| 1544 | 2154 spa_scrub_io_start(spa_t *spa, blkptr_t *bp, int priority, int flags, |
| 2155 zbookmark_t *zb) | |
| 789 | 2156 { |
| 2157 size_t size = BP_GET_LSIZE(bp); | |
| 2158 void *data = zio_buf_alloc(size); | |
| 2159 | |
| 2160 mutex_enter(&spa->spa_scrub_lock); | |
| 2161 spa->spa_scrub_inflight++; | |
| 2162 mutex_exit(&spa->spa_scrub_lock); | |
| 2163 | |
| 1544 | 2164 if (zb->zb_level == -1 && BP_GET_TYPE(bp) != DMU_OT_OBJSET) |
| 2165 flags |= ZIO_FLAG_SPECULATIVE; /* intent log block */ | |
| 2166 | |
|
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2167 flags |= ZIO_FLAG_SCRUB_THREAD | ZIO_FLAG_CANFAIL; |
| 1544 | 2168 |
| 789 | 2169 zio_nowait(zio_read(NULL, spa, bp, data, size, |
| 1544 | 2170 spa_scrub_io_done, NULL, priority, flags, zb)); |
| 789 | 2171 } |
| 2172 | |
| 2173 /* ARGSUSED */ | |
| 2174 static int | |
| 2175 spa_scrub_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) | |
| 2176 { | |
| 2177 blkptr_t *bp = &bc->bc_blkptr; | |
|
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2178 vdev_t *vd = spa->spa_root_vdev; |
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2179 dva_t *dva = bp->blk_dva; |
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2180 int needs_resilver = B_FALSE; |
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2181 int d; |
| 789 | 2182 |
|
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2183 if (bc->bc_errno) { |
| 789 | 2184 /* |
| 2185 * We can't scrub this block, but we can continue to scrub | |
| 2186 * the rest of the pool. Note the error and move along. | |
| 2187 */ | |
| 2188 mutex_enter(&spa->spa_scrub_lock); | |
| 2189 spa->spa_scrub_errors++; | |
| 2190 mutex_exit(&spa->spa_scrub_lock); | |
| 2191 | |
|
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2192 mutex_enter(&vd->vdev_stat_lock); |
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2193 vd->vdev_stat.vs_scrub_errors++; |
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2194 mutex_exit(&vd->vdev_stat_lock); |
| 789 | 2195 |
| 2196 return (ERESTART); | |
| 2197 } | |
| 2198 | |
| 2199 ASSERT(bp->blk_birth < spa->spa_scrub_maxtxg); | |
| 2200 | |
|
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2201 for (d = 0; d < BP_GET_NDVAS(bp); d++) { |
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2202 vd = vdev_lookup_top(spa, DVA_GET_VDEV(&dva[d])); |
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2203 |
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2204 ASSERT(vd != NULL); |
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2205 |
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2206 /* |
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2207 * Keep track of how much data we've examined so that |
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2208 * zpool(1M) status can make useful progress reports. |
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2209 */ |
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2210 mutex_enter(&vd->vdev_stat_lock); |
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2211 vd->vdev_stat.vs_scrub_examined += DVA_GET_ASIZE(&dva[d]); |
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2212 mutex_exit(&vd->vdev_stat_lock); |
| 789 | 2213 |
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2214 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER) { |
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2215 if (DVA_GET_GANG(&dva[d])) { |
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2216 /* |
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2217 * Gang members may be spread across multiple |
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2218 * vdevs, so the best we can do is look at the |
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2219 * pool-wide DTL. |
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2220 * XXX -- it would be better to change our |
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2221 * allocation policy to ensure that this can't |
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2222 * happen. |
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2223 */ |
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2224 vd = spa->spa_root_vdev; |
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2225 } |
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2226 if (vdev_dtl_contains(&vd->vdev_dtl_map, |
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2227 bp->blk_birth, 1)) |
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2228 needs_resilver = B_TRUE; |
| 789 | 2229 } |
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2230 } |
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2231 |
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2232 if (spa->spa_scrub_type == POOL_SCRUB_EVERYTHING) |
| 789 | 2233 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_SCRUB, |
| 1544 | 2234 ZIO_FLAG_SCRUB, &bc->bc_bookmark); |
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2235 else if (needs_resilver) |
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2236 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_RESILVER, |
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2237 ZIO_FLAG_RESILVER, &bc->bc_bookmark); |
| 789 | 2238 |
| 2239 return (0); | |
| 2240 } | |
| 2241 | |
| 2242 static void | |
| 2243 spa_scrub_thread(spa_t *spa) | |
| 2244 { | |
| 2245 callb_cpr_t cprinfo; | |
| 2246 traverse_handle_t *th = spa->spa_scrub_th; | |
| 2247 vdev_t *rvd = spa->spa_root_vdev; | |
| 2248 pool_scrub_type_t scrub_type = spa->spa_scrub_type; | |
| 2249 int error = 0; | |
| 2250 boolean_t complete; | |
| 2251 | |
| 2252 CALLB_CPR_INIT(&cprinfo, &spa->spa_scrub_lock, callb_generic_cpr, FTAG); | |
| 2253 | |
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2254 /* |
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2255 * If we're restarting due to a snapshot create/delete, |
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2256 * wait for that to complete. |
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2257 */ |
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2258 txg_wait_synced(spa_get_dsl(spa), 0); |
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2259 |
| 1544 | 2260 dprintf("start %s mintxg=%llu maxtxg=%llu\n", |
| 2261 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
| 2262 spa->spa_scrub_mintxg, spa->spa_scrub_maxtxg); | |
| 2263 | |
| 2264 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 2265 vdev_reopen(rvd); /* purge all vdev caches */ | |
| 789 | 2266 vdev_config_dirty(rvd); /* rewrite all disk labels */ |
| 2267 vdev_scrub_stat_update(rvd, scrub_type, B_FALSE); | |
| 1544 | 2268 spa_config_exit(spa, FTAG); |
| 789 | 2269 |
| 2270 mutex_enter(&spa->spa_scrub_lock); | |
| 2271 spa->spa_scrub_errors = 0; | |
| 2272 spa->spa_scrub_active = 1; | |
| 1544 | 2273 ASSERT(spa->spa_scrub_inflight == 0); |
| 2274 ASSERT(spa->spa_scrub_throttled == 0); | |
| 789 | 2275 |
| 2276 while (!spa->spa_scrub_stop) { | |
| 2277 CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
| 1544 | 2278 while (spa->spa_scrub_suspended) { |
| 789 | 2279 spa->spa_scrub_active = 0; |
| 2280 cv_broadcast(&spa->spa_scrub_cv); | |
| 2281 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2282 spa->spa_scrub_active = 1; | |
| 2283 } | |
| 2284 CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_scrub_lock); | |
| 2285 | |
| 2286 if (spa->spa_scrub_restart_txg != 0) | |
| 2287 break; | |
| 2288 | |
| 2289 mutex_exit(&spa->spa_scrub_lock); | |
| 2290 error = traverse_more(th); | |
| 2291 mutex_enter(&spa->spa_scrub_lock); | |
| 2292 if (error != EAGAIN) | |
| 2293 break; | |
| 1544 | 2294 |
| 2295 while (spa->spa_scrub_throttled > 0) | |
| 2296 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 789 | 2297 } |
| 2298 | |
| 2299 while (spa->spa_scrub_inflight) | |
| 2300 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 2301 | |
|
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2302 spa->spa_scrub_active = 0; |
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2303 cv_broadcast(&spa->spa_scrub_cv); |
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2304 |
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2305 mutex_exit(&spa->spa_scrub_lock); |
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2306 |
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2307 spa_config_enter(spa, RW_WRITER, FTAG); |
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2308 |
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2309 mutex_enter(&spa->spa_scrub_lock); |
|
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2310 |
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2311 /* |
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2312 * Note: we check spa_scrub_restart_txg under both spa_scrub_lock |
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2313 * AND the spa config lock to synchronize with any config changes |
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2314 * that revise the DTLs under spa_vdev_enter() / spa_vdev_exit(). |
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2315 */ |
| 789 | 2316 if (spa->spa_scrub_restart_txg != 0) |
| 2317 error = ERESTART; | |
| 2318 | |
| 1544 | 2319 if (spa->spa_scrub_stop) |
| 2320 error = EINTR; | |
| 2321 | |
| 789 | 2322 /* |
| 1544 | 2323 * Even if there were uncorrectable errors, we consider the scrub |
| 2324 * completed. The downside is that if there is a transient error during | |
| 2325 * a resilver, we won't resilver the data properly to the target. But | |
| 2326 * if the damage is permanent (more likely) we will resilver forever, | |
| 2327 * which isn't really acceptable. Since there is enough information for | |
| 2328 * the user to know what has failed and why, this seems like a more | |
| 2329 * tractable approach. | |
| 789 | 2330 */ |
| 1544 | 2331 complete = (error == 0); |
| 789 | 2332 |
| 1544 | 2333 dprintf("end %s to maxtxg=%llu %s, traverse=%d, %llu errors, stop=%u\n", |
| 2334 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
| 789 | 2335 spa->spa_scrub_maxtxg, complete ? "done" : "FAILED", |
| 2336 error, spa->spa_scrub_errors, spa->spa_scrub_stop); | |
| 2337 | |
| 2338 mutex_exit(&spa->spa_scrub_lock); | |
| 2339 | |
| 2340 /* | |
| 2341 * If the scrub/resilver completed, update all DTLs to reflect this. | |
| 2342 * Whether it succeeded or not, vacate all temporary scrub DTLs. | |
| 2343 */ | |
| 2344 vdev_dtl_reassess(rvd, spa_last_synced_txg(spa) + 1, | |
| 2345 complete ? spa->spa_scrub_maxtxg : 0, B_TRUE); | |
| 2346 vdev_scrub_stat_update(rvd, POOL_SCRUB_NONE, complete); | |
| 1544 | 2347 spa_errlog_rotate(spa); |
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2348 |
| 1544 | 2349 spa_config_exit(spa, FTAG); |
| 789 | 2350 |
| 2351 mutex_enter(&spa->spa_scrub_lock); | |
| 2352 | |
| 1544 | 2353 /* |
| 2354 * We may have finished replacing a device. | |
| 2355 * Let the async thread assess this and handle the detach. | |
| 2356 */ | |
| 2357 spa_async_request(spa, SPA_ASYNC_REPLACE_DONE); | |
| 789 | 2358 |
| 2359 /* | |
| 2360 * If we were told to restart, our final act is to start a new scrub. | |
| 2361 */ | |
| 2362 if (error == ERESTART) | |
| 1544 | 2363 spa_async_request(spa, scrub_type == POOL_SCRUB_RESILVER ? |
| 2364 SPA_ASYNC_RESILVER : SPA_ASYNC_SCRUB); | |
| 789 | 2365 |
| 1544 | 2366 spa->spa_scrub_type = POOL_SCRUB_NONE; |
| 2367 spa->spa_scrub_active = 0; | |
| 2368 spa->spa_scrub_thread = NULL; | |
| 2369 cv_broadcast(&spa->spa_scrub_cv); | |
| 789 | 2370 CALLB_CPR_EXIT(&cprinfo); /* drops &spa->spa_scrub_lock */ |
| 2371 thread_exit(); | |
| 2372 } | |
| 2373 | |
| 2374 void | |
| 2375 spa_scrub_suspend(spa_t *spa) | |
| 2376 { | |
| 2377 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2378 spa->spa_scrub_suspended++; |
| 789 | 2379 while (spa->spa_scrub_active) { |
| 2380 cv_broadcast(&spa->spa_scrub_cv); | |
| 2381 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2382 } | |
| 2383 while (spa->spa_scrub_inflight) | |
| 2384 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 2385 mutex_exit(&spa->spa_scrub_lock); | |
| 2386 } | |
| 2387 | |
| 2388 void | |
| 2389 spa_scrub_resume(spa_t *spa) | |
| 2390 { | |
| 2391 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2392 ASSERT(spa->spa_scrub_suspended != 0); |
| 2393 if (--spa->spa_scrub_suspended == 0) | |
| 789 | 2394 cv_broadcast(&spa->spa_scrub_cv); |
| 2395 mutex_exit(&spa->spa_scrub_lock); | |
| 2396 } | |
| 2397 | |
| 2398 void | |
| 2399 spa_scrub_restart(spa_t *spa, uint64_t txg) | |
| 2400 { | |
| 2401 /* | |
| 2402 * Something happened (e.g. snapshot create/delete) that means | |
| 2403 * we must restart any in-progress scrubs. The itinerary will | |
| 2404 * fix this properly. | |
| 2405 */ | |
| 2406 mutex_enter(&spa->spa_scrub_lock); | |
| 2407 spa->spa_scrub_restart_txg = txg; | |
| 2408 mutex_exit(&spa->spa_scrub_lock); | |
| 2409 } | |
| 2410 | |
| 1544 | 2411 int |
| 2412 spa_scrub(spa_t *spa, pool_scrub_type_t type, boolean_t force) | |
| 789 | 2413 { |
| 2414 space_seg_t *ss; | |
| 2415 uint64_t mintxg, maxtxg; | |
| 2416 vdev_t *rvd = spa->spa_root_vdev; | |
| 2417 | |
| 2418 if ((uint_t)type >= POOL_SCRUB_TYPES) | |
| 2419 return (ENOTSUP); | |
| 2420 | |
| 1544 | 2421 mutex_enter(&spa->spa_scrub_lock); |
| 2422 | |
| 789 | 2423 /* |
| 2424 * If there's a scrub or resilver already in progress, stop it. | |
| 2425 */ | |
| 2426 while (spa->spa_scrub_thread != NULL) { | |
| 2427 /* | |
| 2428 * Don't stop a resilver unless forced. | |
| 2429 */ | |
| 1544 | 2430 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER && !force) { |
| 2431 mutex_exit(&spa->spa_scrub_lock); | |
| 789 | 2432 return (EBUSY); |
| 1544 | 2433 } |
| 789 | 2434 spa->spa_scrub_stop = 1; |
| 2435 cv_broadcast(&spa->spa_scrub_cv); | |
| 2436 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2437 } | |
| 2438 | |
| 2439 /* | |
| 2440 * Terminate the previous traverse. | |
| 2441 */ | |
| 2442 if (spa->spa_scrub_th != NULL) { | |
| 2443 traverse_fini(spa->spa_scrub_th); | |
| 2444 spa->spa_scrub_th = NULL; | |
| 2445 } | |
| 2446 | |
| 1544 | 2447 if (rvd == NULL) { |
| 2448 ASSERT(spa->spa_scrub_stop == 0); | |
| 2449 ASSERT(spa->spa_scrub_type == type); | |
| 2450 ASSERT(spa->spa_scrub_restart_txg == 0); | |
| 2451 mutex_exit(&spa->spa_scrub_lock); | |
| 2452 return (0); | |
| 2453 } | |
| 789 | 2454 |
| 2455 mintxg = TXG_INITIAL - 1; | |
| 2456 maxtxg = spa_last_synced_txg(spa) + 1; | |
| 2457 | |
| 1544 | 2458 mutex_enter(&rvd->vdev_dtl_lock); |
| 789 | 2459 |
| 1544 | 2460 if (rvd->vdev_dtl_map.sm_space == 0) { |
| 2461 /* | |
| 2462 * The pool-wide DTL is empty. | |
| 1732 | 2463 * If this is a resilver, there's nothing to do except |
| 2464 * check whether any in-progress replacements have completed. | |
| 1544 | 2465 */ |
| 1732 | 2466 if (type == POOL_SCRUB_RESILVER) { |
| 1544 | 2467 type = POOL_SCRUB_NONE; |
| 1732 | 2468 spa_async_request(spa, SPA_ASYNC_REPLACE_DONE); |
| 2469 } | |
| 1544 | 2470 } else { |
| 2471 /* | |
| 2472 * The pool-wide DTL is non-empty. | |
| 2473 * If this is a normal scrub, upgrade to a resilver instead. | |
| 2474 */ | |
| 2475 if (type == POOL_SCRUB_EVERYTHING) | |
| 2476 type = POOL_SCRUB_RESILVER; | |
| 2477 } | |
| 789 | 2478 |
| 1544 | 2479 if (type == POOL_SCRUB_RESILVER) { |
| 789 | 2480 /* |
| 2481 * Determine the resilvering boundaries. | |
| 2482 * | |
| 2483 * Note: (mintxg, maxtxg) is an open interval, | |
| 2484 * i.e. mintxg and maxtxg themselves are not included. | |
| 2485 * | |
| 2486 * Note: for maxtxg, we MIN with spa_last_synced_txg(spa) + 1 | |
| 2487 * so we don't claim to resilver a txg that's still changing. | |
| 2488 */ | |
| 2489 ss = avl_first(&rvd->vdev_dtl_map.sm_root); | |
| 1544 | 2490 mintxg = ss->ss_start - 1; |
| 789 | 2491 ss = avl_last(&rvd->vdev_dtl_map.sm_root); |
| 1544 | 2492 maxtxg = MIN(ss->ss_end, maxtxg); |
| 789 | 2493 } |
| 2494 | |
| 1544 | 2495 mutex_exit(&rvd->vdev_dtl_lock); |
| 2496 | |
| 2497 spa->spa_scrub_stop = 0; | |
| 2498 spa->spa_scrub_type = type; | |
| 2499 spa->spa_scrub_restart_txg = 0; | |
| 2500 | |
| 2501 if (type != POOL_SCRUB_NONE) { | |
| 2502 spa->spa_scrub_mintxg = mintxg; | |
| 789 | 2503 spa->spa_scrub_maxtxg = maxtxg; |
| 2504 spa->spa_scrub_th = traverse_init(spa, spa_scrub_cb, NULL, | |
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2505 ADVANCE_PRE | ADVANCE_PRUNE | ADVANCE_ZIL, |
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2506 ZIO_FLAG_CANFAIL); |
| 789 | 2507 traverse_add_pool(spa->spa_scrub_th, mintxg, maxtxg); |
| 2508 spa->spa_scrub_thread = thread_create(NULL, 0, | |
| 2509 spa_scrub_thread, spa, 0, &p0, TS_RUN, minclsyspri); | |
| 2510 } | |
| 2511 | |
| 1544 | 2512 mutex_exit(&spa->spa_scrub_lock); |
| 2513 | |
| 789 | 2514 return (0); |
| 2515 } | |
| 2516 | |
| 1544 | 2517 /* |
| 2518 * ========================================================================== | |
| 2519 * SPA async task processing | |
| 2520 * ========================================================================== | |
| 2521 */ | |
| 2522 | |
| 2523 static void | |
| 2524 spa_async_reopen(spa_t *spa) | |
| 789 | 2525 { |
| 1544 | 2526 vdev_t *rvd = spa->spa_root_vdev; |
| 2527 vdev_t *tvd; | |
| 2528 int c; | |
| 2529 | |
| 2530 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 2531 | |
| 2532 for (c = 0; c < rvd->vdev_children; c++) { | |
| 2533 tvd = rvd->vdev_child[c]; | |
| 2534 if (tvd->vdev_reopen_wanted) { | |
| 2535 tvd->vdev_reopen_wanted = 0; | |
| 2536 vdev_reopen(tvd); | |
| 2537 } | |
| 2538 } | |
| 789 | 2539 |
| 1544 | 2540 spa_config_exit(spa, FTAG); |
| 2541 } | |
| 2542 | |
| 2543 static void | |
| 2544 spa_async_thread(spa_t *spa) | |
| 2545 { | |
| 2546 int tasks; | |
| 2547 | |
| 2548 ASSERT(spa->spa_sync_on); | |
| 789 | 2549 |
| 1544 | 2550 mutex_enter(&spa->spa_async_lock); |
| 2551 tasks = spa->spa_async_tasks; | |
| 2552 spa->spa_async_tasks = 0; | |
| 2553 mutex_exit(&spa->spa_async_lock); | |
| 2554 | |
| 2555 /* | |
|
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2556 * See if the config needs to be updated. |
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2557 */ |
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2558 if (tasks & SPA_ASYNC_CONFIG_UPDATE) { |
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2559 mutex_enter(&spa_namespace_lock); |
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2560 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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2561 mutex_exit(&spa_namespace_lock); |
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2562 } |
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2563 |
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2564 /* |
| 1544 | 2565 * See if any devices need to be reopened. |
| 2566 */ | |
| 2567 if (tasks & SPA_ASYNC_REOPEN) | |
| 2568 spa_async_reopen(spa); | |
| 2569 | |
| 2570 /* | |
| 2571 * If any devices are done replacing, detach them. | |
| 2572 */ | |
| 2573 if (tasks & SPA_ASYNC_REPLACE_DONE) | |
| 789 | 2574 spa_vdev_replace_done(spa); |
| 2575 | |
| 1544 | 2576 /* |
| 2577 * Kick off a scrub. | |
| 2578 */ | |
| 2579 if (tasks & SPA_ASYNC_SCRUB) | |
| 2580 VERIFY(spa_scrub(spa, POOL_SCRUB_EVERYTHING, B_TRUE) == 0); | |
| 2581 | |
| 2582 /* | |
| 2583 * Kick off a resilver. | |
| 2584 */ | |
| 2585 if (tasks & SPA_ASYNC_RESILVER) | |
| 2586 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 2587 | |
| 2588 /* | |
| 2589 * Let the world know that we're done. | |
| 2590 */ | |
| 2591 mutex_enter(&spa->spa_async_lock); | |
| 2592 spa->spa_async_thread = NULL; | |
| 2593 cv_broadcast(&spa->spa_async_cv); | |
| 2594 mutex_exit(&spa->spa_async_lock); | |
| 2595 thread_exit(); | |
| 2596 } | |
| 2597 | |
| 2598 void | |
| 2599 spa_async_suspend(spa_t *spa) | |
| 2600 { | |
| 2601 mutex_enter(&spa->spa_async_lock); | |
| 2602 spa->spa_async_suspended++; | |
| 2603 while (spa->spa_async_thread != NULL) | |
| 2604 cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); | |
| 2605 mutex_exit(&spa->spa_async_lock); | |
| 2606 } | |
| 2607 | |
| 2608 void | |
| 2609 spa_async_resume(spa_t *spa) | |
| 2610 { | |
| 2611 mutex_enter(&spa->spa_async_lock); | |
| 2612 ASSERT(spa->spa_async_suspended != 0); | |
| 2613 spa->spa_async_suspended--; | |
| 2614 mutex_exit(&spa->spa_async_lock); | |
| 2615 } | |
| 2616 | |
| 2617 static void | |
| 2618 spa_async_dispatch(spa_t *spa) | |
| 2619 { | |
| 2620 mutex_enter(&spa->spa_async_lock); | |
| 2621 if (spa->spa_async_tasks && !spa->spa_async_suspended && | |
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2622 spa->spa_async_thread == NULL && |
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2623 rootdir != NULL && !vn_is_readonly(rootdir)) |
| 1544 | 2624 spa->spa_async_thread = thread_create(NULL, 0, |
| 2625 spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
| 2626 mutex_exit(&spa->spa_async_lock); | |
| 2627 } | |
| 2628 | |
| 2629 void | |
| 2630 spa_async_request(spa_t *spa, int task) | |
| 2631 { | |
| 2632 mutex_enter(&spa->spa_async_lock); | |
| 2633 spa->spa_async_tasks |= task; | |
| 2634 mutex_exit(&spa->spa_async_lock); | |
| 789 | 2635 } |
| 2636 | |
| 2637 /* | |
| 2638 * ========================================================================== | |
| 2639 * SPA syncing routines | |
| 2640 * ========================================================================== | |
| 2641 */ | |
| 2642 | |
| 2643 static void | |
| 2644 spa_sync_deferred_frees(spa_t *spa, uint64_t txg) | |
| 2645 { | |
| 2646 bplist_t *bpl = &spa->spa_sync_bplist; | |
| 2647 dmu_tx_t *tx; | |
| 2648 blkptr_t blk; | |
| 2649 uint64_t itor = 0; | |
| 2650 zio_t *zio; | |
| 2651 int error; | |
| 2652 uint8_t c = 1; | |
| 2653 | |
| 2654 zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CONFIG_HELD); | |
| 2655 | |
| 2656 while (bplist_iterate(bpl, &itor, &blk) == 0) | |
| 2657 zio_nowait(zio_free(zio, spa, txg, &blk, NULL, NULL)); | |
| 2658 | |
| 2659 error = zio_wait(zio); | |
| 2660 ASSERT3U(error, ==, 0); | |
| 2661 | |
| 2662 tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); | |
| 2663 bplist_vacate(bpl, tx); | |
| 2664 | |
| 2665 /* | |
| 2666 * Pre-dirty the first block so we sync to convergence faster. | |
| 2667 * (Usually only the first block is needed.) | |
| 2668 */ | |
| 2669 dmu_write(spa->spa_meta_objset, spa->spa_sync_bplist_obj, 0, 1, &c, tx); | |
| 2670 dmu_tx_commit(tx); | |
| 2671 } | |
| 2672 | |
| 2673 static void | |
| 2082 | 2674 spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) |
| 2675 { | |
| 2676 char *packed = NULL; | |
| 2677 size_t nvsize = 0; | |
| 2678 dmu_buf_t *db; | |
| 2679 | |
| 2680 VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
| 2681 | |
| 2682 packed = kmem_alloc(nvsize, KM_SLEEP); | |
| 2683 | |
| 2684 VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
| 2685 KM_SLEEP) == 0); | |
| 2686 | |
| 2687 dmu_write(spa->spa_meta_objset, obj, 0, nvsize, packed, tx); | |
| 2688 | |
| 2689 kmem_free(packed, nvsize); | |
| 2690 | |
| 2691 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
| 2692 dmu_buf_will_dirty(db, tx); | |
| 2693 *(uint64_t *)db->db_data = nvsize; | |
| 2694 dmu_buf_rele(db, FTAG); | |
| 2695 } | |
| 2696 | |
| 2697 static void | |
| 2698 spa_sync_spares(spa_t *spa, dmu_tx_t *tx) | |
| 2699 { | |
| 2700 nvlist_t *nvroot; | |
| 2701 nvlist_t **spares; | |
| 2702 int i; | |
| 2703 | |
| 2704 if (!spa->spa_sync_spares) | |
| 2705 return; | |
| 2706 | |
| 2707 /* | |
| 2708 * Update the MOS nvlist describing the list of available spares. | |
| 2709 * spa_validate_spares() will have already made sure this nvlist is | |
| 2710 * valid and the vdevs are labelled appropriately. | |
| 2711 */ | |
| 2712 if (spa->spa_spares_object == 0) { | |
| 2713 spa->spa_spares_object = dmu_object_alloc(spa->spa_meta_objset, | |
| 2714 DMU_OT_PACKED_NVLIST, 1 << 14, | |
| 2715 DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); | |
| 2716 VERIFY(zap_update(spa->spa_meta_objset, | |
| 2717 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SPARES, | |
| 2718 sizeof (uint64_t), 1, &spa->spa_spares_object, tx) == 0); | |
| 2719 } | |
| 2720 | |
| 2721 VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 2722 if (spa->spa_nspares == 0) { | |
| 2723 VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 2724 NULL, 0) == 0); | |
| 2725 } else { | |
| 2726 spares = kmem_alloc(spa->spa_nspares * sizeof (void *), | |
| 2727 KM_SLEEP); | |
| 2728 for (i = 0; i < spa->spa_nspares; i++) | |
| 2729 spares[i] = vdev_config_generate(spa, | |
| 2730 spa->spa_spares[i], B_FALSE, B_TRUE); | |
| 2731 VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 2732 spares, spa->spa_nspares) == 0); | |
| 2733 for (i = 0; i < spa->spa_nspares; i++) | |
| 2734 nvlist_free(spares[i]); | |
| 2735 kmem_free(spares, spa->spa_nspares * sizeof (void *)); | |
| 2736 } | |
| 2737 | |
| 2738 spa_sync_nvlist(spa, spa->spa_spares_object, nvroot, tx); | |
| 2926 | 2739 nvlist_free(nvroot); |
| 2082 | 2740 |
| 2741 spa->spa_sync_spares = B_FALSE; | |
| 2742 } | |
| 2743 | |
| 2744 static void | |
| 789 | 2745 spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) |
| 2746 { | |
| 2747 nvlist_t *config; | |
| 2748 | |
| 2749 if (list_is_empty(&spa->spa_dirty_list)) | |
| 2750 return; | |
| 2751 | |
| 2752 config = spa_config_generate(spa, NULL, dmu_tx_get_txg(tx), B_FALSE); | |
| 2753 | |
|
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2754 if (spa->spa_config_syncing) |
|
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2755 nvlist_free(spa->spa_config_syncing); |
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2756 spa->spa_config_syncing = config; |
| 789 | 2757 |
| 2082 | 2758 spa_sync_nvlist(spa, spa->spa_config_object, config, tx); |
| 789 | 2759 } |
| 2760 | |
| 2761 /* | |
| 2762 * Sync the specified transaction group. New blocks may be dirtied as | |
| 2763 * part of the process, so we iterate until it converges. | |
| 2764 */ | |
| 2765 void | |
| 2766 spa_sync(spa_t *spa, uint64_t txg) | |
| 2767 { | |
| 2768 dsl_pool_t *dp = spa->spa_dsl_pool; | |
| 2769 objset_t *mos = spa->spa_meta_objset; | |
| 2770 bplist_t *bpl = &spa->spa_sync_bplist; | |
|
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2771 vdev_t *rvd = spa->spa_root_vdev; |
| 789 | 2772 vdev_t *vd; |
| 2773 dmu_tx_t *tx; | |
| 2774 int dirty_vdevs; | |
| 2775 | |
| 2776 /* | |
| 2777 * Lock out configuration changes. | |
| 2778 */ | |
| 1544 | 2779 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2780 |
| 2781 spa->spa_syncing_txg = txg; | |
| 2782 spa->spa_sync_pass = 0; | |
| 2783 | |
| 1544 | 2784 VERIFY(0 == bplist_open(bpl, mos, spa->spa_sync_bplist_obj)); |
| 789 | 2785 |
| 2082 | 2786 tx = dmu_tx_create_assigned(dp, txg); |
| 2787 | |
| 2788 /* | |
| 2789 * If we are upgrading to ZFS_VERSION_RAIDZ_DEFLATE this txg, | |
| 2790 * set spa_deflate if we have no raid-z vdevs. | |
| 2791 */ | |
| 2792 if (spa->spa_ubsync.ub_version < ZFS_VERSION_RAIDZ_DEFLATE && | |
| 2793 spa->spa_uberblock.ub_version >= ZFS_VERSION_RAIDZ_DEFLATE) { | |
| 2794 int i; | |
| 2795 | |
| 2796 for (i = 0; i < rvd->vdev_children; i++) { | |
| 2797 vd = rvd->vdev_child[i]; | |
| 2798 if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
| 2799 break; | |
| 2800 } | |
| 2801 if (i == rvd->vdev_children) { | |
| 2802 spa->spa_deflate = TRUE; | |
| 2803 VERIFY(0 == zap_add(spa->spa_meta_objset, | |
| 2804 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 2805 sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
| 2806 } | |
| 2807 } | |
| 2808 | |
| 789 | 2809 /* |
| 2810 * If anything has changed in this txg, push the deferred frees | |
| 2811 * from the previous txg. If not, leave them alone so that we | |
| 2812 * don't generate work on an otherwise idle system. | |
| 2813 */ | |
| 2814 if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || | |
|
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2815 !txg_list_empty(&dp->dp_dirty_dirs, txg) || |
|
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2816 !txg_list_empty(&dp->dp_sync_tasks, txg)) |
| 789 | 2817 spa_sync_deferred_frees(spa, txg); |
| 2818 | |
| 2819 /* | |
| 2820 * Iterate to convergence. | |
| 2821 */ | |
| 2822 do { | |
| 2823 spa->spa_sync_pass++; | |
| 2824 | |
| 2825 spa_sync_config_object(spa, tx); | |
| 2082 | 2826 spa_sync_spares(spa, tx); |
| 1544 | 2827 spa_errlog_sync(spa, txg); |
| 789 | 2828 dsl_pool_sync(dp, txg); |
| 2829 | |
| 2830 dirty_vdevs = 0; | |
| 2831 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) { | |
| 2832 vdev_sync(vd, txg); | |
| 2833 dirty_vdevs++; | |
| 2834 } | |
| 2835 | |
| 2836 bplist_sync(bpl, tx); | |
| 2837 } while (dirty_vdevs); | |
| 2838 | |
| 2839 bplist_close(bpl); | |
| 2840 | |
| 2841 dprintf("txg %llu passes %d\n", txg, spa->spa_sync_pass); | |
| 2842 | |
| 2843 /* | |
| 2844 * Rewrite the vdev configuration (which includes the uberblock) | |
| 2845 * to commit the transaction group. | |
|
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2846 * |
|
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2847 * If there are any dirty vdevs, sync the uberblock to all vdevs. |
|
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2848 * Otherwise, pick a random top-level vdev that's known to be |
|
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2849 * visible in the config cache (see spa_vdev_add() for details). |
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2850 * If the write fails, try the next vdev until we're tried them all. |
| 789 | 2851 */ |
|
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2852 if (!list_is_empty(&spa->spa_dirty_list)) { |
|
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2853 VERIFY(vdev_config_sync(rvd, txg) == 0); |
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2854 } else { |
|
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2855 int children = rvd->vdev_children; |
|
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2856 int c0 = spa_get_random(children); |
|
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2857 int c; |
|
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2858 |
|
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2859 for (c = 0; c < children; c++) { |
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2860 vd = rvd->vdev_child[(c0 + c) % children]; |
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2861 if (vd->vdev_ms_array == 0) |
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2862 continue; |
|
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2863 if (vdev_config_sync(vd, txg) == 0) |
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2864 break; |
|
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2865 } |
|
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2866 if (c == children) |
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2867 VERIFY(vdev_config_sync(rvd, txg) == 0); |
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2868 } |
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2869 |
| 2082 | 2870 dmu_tx_commit(tx); |
| 2871 | |
|
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2872 /* |
|
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2873 * Clear the dirty config list. |
|
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2874 */ |
|
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2875 while ((vd = list_head(&spa->spa_dirty_list)) != NULL) |
|
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2876 vdev_config_clean(vd); |
|
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2877 |
|
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2878 /* |
|
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2879 * Now that the new config has synced transactionally, |
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2880 * let it become visible to the config cache. |
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2881 */ |
|
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2882 if (spa->spa_config_syncing != NULL) { |
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2883 spa_config_set(spa, spa->spa_config_syncing); |
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2884 spa->spa_config_txg = txg; |
|
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2885 spa->spa_config_syncing = NULL; |
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2886 } |
| 789 | 2887 |
| 2888 /* | |
| 2889 * Make a stable copy of the fully synced uberblock. | |
| 2890 * We use this as the root for pool traversals. | |
| 2891 */ | |
| 2892 spa->spa_traverse_wanted = 1; /* tells traverse_more() to stop */ | |
| 2893 | |
| 2894 spa_scrub_suspend(spa); /* stop scrubbing and finish I/Os */ | |
| 2895 | |
| 2896 rw_enter(&spa->spa_traverse_lock, RW_WRITER); | |
| 2897 spa->spa_traverse_wanted = 0; | |
| 2898 spa->spa_ubsync = spa->spa_uberblock; | |
| 2899 rw_exit(&spa->spa_traverse_lock); | |
| 2900 | |
| 2901 spa_scrub_resume(spa); /* resume scrub with new ubsync */ | |
| 2902 | |
| 2903 /* | |
| 2904 * Clean up the ZIL records for the synced txg. | |
| 2905 */ | |
| 2906 dsl_pool_zil_clean(dp); | |
| 2907 | |
| 2908 /* | |
| 2909 * Update usable space statistics. | |
| 2910 */ | |
| 2911 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg))) | |
| 2912 vdev_sync_done(vd, txg); | |
| 2913 | |
| 2914 /* | |
| 2915 * It had better be the case that we didn't dirty anything | |
| 2082 | 2916 * since vdev_config_sync(). |
| 789 | 2917 */ |
| 2918 ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
| 2919 ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
| 2920 ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
| 2921 ASSERT(bpl->bpl_queue == NULL); | |
| 2922 | |
| 1544 | 2923 spa_config_exit(spa, FTAG); |
| 2924 | |
| 2925 /* | |
| 2926 * If any async tasks have been requested, kick them off. | |
| 2927 */ | |
| 2928 spa_async_dispatch(spa); | |
| 789 | 2929 } |
| 2930 | |
| 2931 /* | |
| 2932 * Sync all pools. We don't want to hold the namespace lock across these | |
| 2933 * operations, so we take a reference on the spa_t and drop the lock during the | |
| 2934 * sync. | |
| 2935 */ | |
| 2936 void | |
| 2937 spa_sync_allpools(void) | |
| 2938 { | |
| 2939 spa_t *spa = NULL; | |
| 2940 mutex_enter(&spa_namespace_lock); | |
| 2941 while ((spa = spa_next(spa)) != NULL) { | |
| 2942 if (spa_state(spa) != POOL_STATE_ACTIVE) | |
| 2943 continue; | |
| 2944 spa_open_ref(spa, FTAG); | |
| 2945 mutex_exit(&spa_namespace_lock); | |
| 2946 txg_wait_synced(spa_get_dsl(spa), 0); | |
| 2947 mutex_enter(&spa_namespace_lock); | |
| 2948 spa_close(spa, FTAG); | |
| 2949 } | |
| 2950 mutex_exit(&spa_namespace_lock); | |
| 2951 } | |
| 2952 | |
| 2953 /* | |
| 2954 * ========================================================================== | |
| 2955 * Miscellaneous routines | |
| 2956 * ========================================================================== | |
| 2957 */ | |
| 2958 | |
| 2959 /* | |
| 2960 * Remove all pools in the system. | |
| 2961 */ | |
| 2962 void | |
| 2963 spa_evict_all(void) | |
| 2964 { | |
| 2965 spa_t *spa; | |
| 2966 | |
| 2967 /* | |
| 2968 * Remove all cached state. All pools should be closed now, | |
| 2969 * so every spa in the AVL tree should be unreferenced. | |
| 2970 */ | |
| 2971 mutex_enter(&spa_namespace_lock); | |
| 2972 while ((spa = spa_next(NULL)) != NULL) { | |
| 2973 /* | |
| 1544 | 2974 * Stop async tasks. The async thread may need to detach |
| 2975 * a device that's been replaced, which requires grabbing | |
| 2976 * spa_namespace_lock, so we must drop it here. | |
| 789 | 2977 */ |
| 2978 spa_open_ref(spa, FTAG); | |
| 2979 mutex_exit(&spa_namespace_lock); | |
| 1544 | 2980 spa_async_suspend(spa); |
| 789 | 2981 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); |
| 2982 mutex_enter(&spa_namespace_lock); | |
| 2983 spa_close(spa, FTAG); | |
| 2984 | |
| 2985 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
| 2986 spa_unload(spa); | |
| 2987 spa_deactivate(spa); | |
| 2988 } | |
| 2989 spa_remove(spa); | |
| 2990 } | |
| 2991 mutex_exit(&spa_namespace_lock); | |
| 2992 } | |
| 1544 | 2993 |
| 2994 vdev_t * | |
| 2995 spa_lookup_by_guid(spa_t *spa, uint64_t guid) | |
| 2996 { | |
| 2997 return (vdev_lookup_by_guid(spa->spa_root_vdev, guid)); | |
| 2998 } | |
| 1760 | 2999 |
| 3000 void | |
| 3001 spa_upgrade(spa_t *spa) | |
| 3002 { | |
| 3003 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 3004 | |
| 3005 /* | |
| 3006 * This should only be called for a non-faulted pool, and since a | |
| 3007 * future version would result in an unopenable pool, this shouldn't be | |
| 3008 * possible. | |
| 3009 */ | |
| 3010 ASSERT(spa->spa_uberblock.ub_version <= ZFS_VERSION); | |
| 3011 | |
| 3012 spa->spa_uberblock.ub_version = ZFS_VERSION; | |
| 3013 vdev_config_dirty(spa->spa_root_vdev); | |
| 3014 | |
| 3015 spa_config_exit(spa, FTAG); | |
| 2082 | 3016 |
| 3017 txg_wait_synced(spa_get_dsl(spa), 0); | |
| 1760 | 3018 } |
| 2082 | 3019 |
| 3020 boolean_t | |
| 3021 spa_has_spare(spa_t *spa, uint64_t guid) | |
| 3022 { | |
| 3023 int i; | |
| 3024 | |
| 3025 for (i = 0; i < spa->spa_nspares; i++) | |
| 3026 if (spa->spa_spares[i]->vdev_guid == guid) | |
| 3027 return (B_TRUE); | |
| 3028 | |
| 3029 return (B_FALSE); | |
| 3030 } |