Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/spa.c @ 3377:a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
6414648 zfs allows overlapping devices to be added
6435943 assertion failed: spare != 0L, file: ../../common/fs/zfs/spa_misc.c
6436000 import of actively spared device returns EBUSY
6478316 nfs/server doesn't respect auto_enable setting
6483675 want a private property to return number of clones
6485728 zpool iostat should flush output periodically
6494072 A device which was set as spare disk is not detach
6497563 zfs double-spared an already-spared disk on reboot
6503724 adding spare that is in use in another pool should be allowed
6505225 zpool(1M) can give misleading error when removing active spare
| author | eschrock |
|---|---|
| date | Mon, 08 Jan 2007 11:15:07 -0800 |
| parents | 256464cbb73c |
| children | 5340a4d98e0b |
| rev | line source |
|---|---|
| 789 | 1 /* |
| 2 * CDDL HEADER START | |
| 3 * | |
| 4 * The contents of this file are subject to the terms of the | |
| 1544 | 5 * Common Development and Distribution License (the "License"). |
| 6 * You may not use this file except in compliance with the License. | |
| 789 | 7 * |
| 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 9 * or http://www.opensolaris.org/os/licensing. | |
| 10 * See the License for the specific language governing permissions | |
| 11 * and limitations under the License. | |
| 12 * | |
| 13 * When distributing Covered Code, include this CDDL HEADER in each | |
| 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
| 15 * If applicable, add the following below this CDDL HEADER, with the | |
| 16 * fields enclosed by brackets "[]" replaced with your own identifying | |
| 17 * information: Portions Copyright [yyyy] [name of copyright owner] | |
| 18 * | |
| 19 * CDDL HEADER END | |
| 20 */ | |
| 2082 | 21 |
| 789 | 22 /* |
|
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23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. |
| 789 | 24 * Use is subject to license terms. |
| 25 */ | |
| 26 | |
| 27 #pragma ident "%Z%%M% %I% %E% SMI" | |
| 28 | |
| 29 /* | |
| 30 * This file contains all the routines used when modifying on-disk SPA state. | |
| 31 * This includes opening, importing, destroying, exporting a pool, and syncing a | |
| 32 * pool. | |
| 33 */ | |
| 34 | |
| 35 #include <sys/zfs_context.h> | |
| 1544 | 36 #include <sys/fm/fs/zfs.h> |
| 789 | 37 #include <sys/spa_impl.h> |
| 38 #include <sys/zio.h> | |
| 39 #include <sys/zio_checksum.h> | |
| 40 #include <sys/zio_compress.h> | |
| 41 #include <sys/dmu.h> | |
| 42 #include <sys/dmu_tx.h> | |
| 43 #include <sys/zap.h> | |
| 44 #include <sys/zil.h> | |
| 45 #include <sys/vdev_impl.h> | |
| 46 #include <sys/metaslab.h> | |
| 47 #include <sys/uberblock_impl.h> | |
| 48 #include <sys/txg.h> | |
| 49 #include <sys/avl.h> | |
| 50 #include <sys/dmu_traverse.h> | |
| 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; | |
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304 vdev_t *vd, *tvd; |
| 2082 | 305 |
| 306 /* | |
| 307 * First, close and free any existing spare vdevs. | |
| 308 */ | |
| 309 for (i = 0; i < spa->spa_nspares; i++) { | |
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310 vd = spa->spa_spares[i]; |
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311 |
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312 /* Undo the call to spa_activate() below */ |
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313 if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL && |
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314 tvd->vdev_isspare) |
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315 spa_spare_remove(tvd); |
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316 vdev_close(vd); |
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317 vdev_free(vd); |
| 2082 | 318 } |
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319 |
| 2082 | 320 if (spa->spa_spares) |
| 321 kmem_free(spa->spa_spares, spa->spa_nspares * sizeof (void *)); | |
| 322 | |
| 323 if (spa->spa_sparelist == NULL) | |
| 324 nspares = 0; | |
| 325 else | |
| 326 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 327 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 328 | |
| 329 spa->spa_nspares = (int)nspares; | |
| 330 spa->spa_spares = NULL; | |
| 331 | |
| 332 if (nspares == 0) | |
| 333 return; | |
| 334 | |
| 335 /* | |
| 336 * Construct the array of vdevs, opening them to get status in the | |
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337 * process. For each spare, there is potentially two different vdev_t |
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338 * structures associated with it: one in the list of spares (used only |
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339 * for basic validation purposes) and one in the active vdev |
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340 * configuration (if it's spared in). During this phase we open and |
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341 * validate each vdev on the spare list. If the vdev also exists in the |
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342 * active configuration, then we also mark this vdev as an active spare. |
| 2082 | 343 */ |
| 344 spa->spa_spares = kmem_alloc(nspares * sizeof (void *), KM_SLEEP); | |
| 345 for (i = 0; i < spa->spa_nspares; i++) { | |
| 346 VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
| 347 VDEV_ALLOC_SPARE) == 0); | |
| 348 ASSERT(vd != NULL); | |
| 349 | |
| 350 spa->spa_spares[i] = vd; | |
| 351 | |
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352 if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL) { |
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353 if (!tvd->vdev_isspare) |
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354 spa_spare_add(tvd); |
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355 |
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356 /* |
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357 * We only mark the spare active if we were successfully |
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358 * able to load the vdev. Otherwise, importing a pool |
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359 * with a bad active spare would result in strange |
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360 * behavior, because multiple pool would think the spare |
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361 * is actively in use. |
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362 * |
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363 * There is a vulnerability here to an equally bizarre |
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364 * circumstance, where a dead active spare is later |
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365 * brought back to life (onlined or otherwise). Given |
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366 * the rarity of this scenario, and the extra complexity |
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367 * it adds, we ignore the possibility. |
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368 */ |
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369 if (!vdev_is_dead(tvd)) |
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370 spa_spare_activate(tvd); |
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371 } |
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372 |
| 2082 | 373 if (vdev_open(vd) != 0) |
| 374 continue; | |
| 375 | |
| 376 vd->vdev_top = vd; | |
| 377 (void) vdev_validate_spare(vd); | |
| 378 } | |
| 379 | |
| 380 /* | |
| 381 * Recompute the stashed list of spares, with status information | |
| 382 * this time. | |
| 383 */ | |
| 384 VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 385 DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 386 | |
| 387 spares = kmem_alloc(spa->spa_nspares * sizeof (void *), KM_SLEEP); | |
| 388 for (i = 0; i < spa->spa_nspares; i++) | |
| 389 spares[i] = vdev_config_generate(spa, spa->spa_spares[i], | |
| 390 B_TRUE, B_TRUE); | |
| 391 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 392 spares, spa->spa_nspares) == 0); | |
| 393 for (i = 0; i < spa->spa_nspares; i++) | |
| 394 nvlist_free(spares[i]); | |
| 395 kmem_free(spares, spa->spa_nspares * sizeof (void *)); | |
| 396 } | |
| 397 | |
| 398 static int | |
| 399 load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
| 400 { | |
| 401 dmu_buf_t *db; | |
| 402 char *packed = NULL; | |
| 403 size_t nvsize = 0; | |
| 404 int error; | |
| 405 *value = NULL; | |
| 406 | |
| 407 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
| 408 nvsize = *(uint64_t *)db->db_data; | |
| 409 dmu_buf_rele(db, FTAG); | |
| 410 | |
| 411 packed = kmem_alloc(nvsize, KM_SLEEP); | |
| 412 error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed); | |
| 413 if (error == 0) | |
| 414 error = nvlist_unpack(packed, nvsize, value, 0); | |
| 415 kmem_free(packed, nvsize); | |
| 416 | |
| 417 return (error); | |
| 418 } | |
| 419 | |
| 420 /* | |
| 789 | 421 * Load an existing storage pool, using the pool's builtin spa_config as a |
| 1544 | 422 * source of configuration information. |
| 789 | 423 */ |
| 424 static int | |
| 1544 | 425 spa_load(spa_t *spa, nvlist_t *config, spa_load_state_t state, int mosconfig) |
| 789 | 426 { |
| 427 int error = 0; | |
| 428 nvlist_t *nvroot = NULL; | |
| 429 vdev_t *rvd; | |
| 430 uberblock_t *ub = &spa->spa_uberblock; | |
|
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431 uint64_t config_cache_txg = spa->spa_config_txg; |
| 789 | 432 uint64_t pool_guid; |
| 2082 | 433 uint64_t version; |
| 789 | 434 zio_t *zio; |
| 435 | |
| 1544 | 436 spa->spa_load_state = state; |
|
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437 |
| 789 | 438 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot) || |
| 1733 | 439 nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) { |
| 1544 | 440 error = EINVAL; |
| 441 goto out; | |
| 442 } | |
| 789 | 443 |
| 2082 | 444 /* |
| 445 * Versioning wasn't explicitly added to the label until later, so if | |
| 446 * it's not present treat it as the initial version. | |
| 447 */ | |
| 448 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &version) != 0) | |
| 449 version = ZFS_VERSION_INITIAL; | |
| 450 | |
| 1733 | 451 (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, |
| 452 &spa->spa_config_txg); | |
| 453 | |
|
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454 if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && |
| 1544 | 455 spa_guid_exists(pool_guid, 0)) { |
| 456 error = EEXIST; | |
| 457 goto out; | |
| 458 } | |
| 789 | 459 |
|
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460 spa->spa_load_guid = pool_guid; |
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461 |
| 789 | 462 /* |
| 2082 | 463 * Parse the configuration into a vdev tree. We explicitly set the |
| 464 * value that will be returned by spa_version() since parsing the | |
| 465 * configuration requires knowing the version number. | |
| 789 | 466 */ |
| 1544 | 467 spa_config_enter(spa, RW_WRITER, FTAG); |
| 2082 | 468 spa->spa_ubsync.ub_version = version; |
| 469 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_LOAD); | |
| 1544 | 470 spa_config_exit(spa, FTAG); |
| 789 | 471 |
| 2082 | 472 if (error != 0) |
| 1544 | 473 goto out; |
| 789 | 474 |
|
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475 ASSERT(spa->spa_root_vdev == rvd); |
| 789 | 476 ASSERT(spa_guid(spa) == pool_guid); |
| 477 | |
| 478 /* | |
| 479 * Try to open all vdevs, loading each label in the process. | |
| 480 */ | |
| 1544 | 481 if (vdev_open(rvd) != 0) { |
| 482 error = ENXIO; | |
| 483 goto out; | |
| 484 } | |
| 789 | 485 |
| 486 /* | |
|
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487 * Validate the labels for all leaf vdevs. We need to grab the config |
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488 * lock because all label I/O is done with the ZIO_FLAG_CONFIG_HELD |
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489 * flag. |
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490 */ |
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491 spa_config_enter(spa, RW_READER, FTAG); |
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492 error = vdev_validate(rvd); |
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493 spa_config_exit(spa, FTAG); |
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494 |
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495 if (error != 0) { |
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496 error = EBADF; |
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497 goto out; |
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498 } |
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499 |
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500 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
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501 error = ENXIO; |
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502 goto out; |
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503 } |
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504 |
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505 /* |
| 789 | 506 * Find the best uberblock. |
| 507 */ | |
| 508 bzero(ub, sizeof (uberblock_t)); | |
| 509 | |
| 510 zio = zio_root(spa, NULL, NULL, | |
| 511 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
| 512 vdev_uberblock_load(zio, rvd, ub); | |
| 513 error = zio_wait(zio); | |
| 514 | |
| 515 /* | |
| 516 * If we weren't able to find a single valid uberblock, return failure. | |
| 517 */ | |
| 518 if (ub->ub_txg == 0) { | |
| 1760 | 519 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 520 VDEV_AUX_CORRUPT_DATA); | |
| 1544 | 521 error = ENXIO; |
| 522 goto out; | |
| 523 } | |
| 524 | |
| 525 /* | |
| 526 * If the pool is newer than the code, we can't open it. | |
| 527 */ | |
| 1760 | 528 if (ub->ub_version > ZFS_VERSION) { |
| 529 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 530 VDEV_AUX_VERSION_NEWER); | |
| 1544 | 531 error = ENOTSUP; |
| 532 goto out; | |
| 789 | 533 } |
| 534 | |
| 535 /* | |
| 536 * If the vdev guid sum doesn't match the uberblock, we have an | |
| 537 * incomplete configuration. | |
| 538 */ | |
| 1732 | 539 if (rvd->vdev_guid_sum != ub->ub_guid_sum && mosconfig) { |
| 1544 | 540 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 541 VDEV_AUX_BAD_GUID_SUM); | |
| 542 error = ENXIO; | |
| 543 goto out; | |
| 789 | 544 } |
| 545 | |
| 546 /* | |
| 547 * Initialize internal SPA structures. | |
| 548 */ | |
| 549 spa->spa_state = POOL_STATE_ACTIVE; | |
| 550 spa->spa_ubsync = spa->spa_uberblock; | |
| 551 spa->spa_first_txg = spa_last_synced_txg(spa) + 1; | |
| 1544 | 552 error = dsl_pool_open(spa, spa->spa_first_txg, &spa->spa_dsl_pool); |
| 553 if (error) { | |
| 554 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 555 VDEV_AUX_CORRUPT_DATA); | |
| 556 goto out; | |
| 557 } | |
| 789 | 558 spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; |
| 559 | |
| 1544 | 560 if (zap_lookup(spa->spa_meta_objset, |
| 789 | 561 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
| 1544 | 562 sizeof (uint64_t), 1, &spa->spa_config_object) != 0) { |
| 563 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 564 VDEV_AUX_CORRUPT_DATA); | |
| 565 error = EIO; | |
| 566 goto out; | |
| 567 } | |
| 789 | 568 |
| 569 if (!mosconfig) { | |
| 2082 | 570 nvlist_t *newconfig; |
| 571 | |
| 572 if (load_nvlist(spa, spa->spa_config_object, &newconfig) != 0) { | |
| 1544 | 573 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 574 VDEV_AUX_CORRUPT_DATA); | |
| 575 error = EIO; | |
| 576 goto out; | |
| 577 } | |
| 789 | 578 |
| 579 spa_config_set(spa, newconfig); | |
| 580 spa_unload(spa); | |
| 581 spa_deactivate(spa); | |
| 582 spa_activate(spa); | |
| 583 | |
| 1544 | 584 return (spa_load(spa, newconfig, state, B_TRUE)); |
| 585 } | |
| 586 | |
| 587 if (zap_lookup(spa->spa_meta_objset, | |
| 588 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, | |
| 589 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj) != 0) { | |
| 590 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 591 VDEV_AUX_CORRUPT_DATA); | |
| 592 error = EIO; | |
| 593 goto out; | |
| 789 | 594 } |
| 595 | |
| 1544 | 596 /* |
| 2082 | 597 * Load the bit that tells us to use the new accounting function |
| 598 * (raid-z deflation). If we have an older pool, this will not | |
| 599 * be present. | |
| 600 */ | |
| 601 error = zap_lookup(spa->spa_meta_objset, | |
| 602 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 603 sizeof (uint64_t), 1, &spa->spa_deflate); | |
| 604 if (error != 0 && error != ENOENT) { | |
| 605 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 606 VDEV_AUX_CORRUPT_DATA); | |
| 607 error = EIO; | |
| 608 goto out; | |
| 609 } | |
| 610 | |
| 611 /* | |
| 1544 | 612 * Load the persistent error log. If we have an older pool, this will |
| 613 * not be present. | |
| 614 */ | |
| 615 error = zap_lookup(spa->spa_meta_objset, | |
| 616 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_LAST, | |
| 617 sizeof (uint64_t), 1, &spa->spa_errlog_last); | |
|
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618 if (error != 0 && error != ENOENT) { |
| 1544 | 619 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 620 VDEV_AUX_CORRUPT_DATA); | |
| 621 error = EIO; | |
| 622 goto out; | |
| 623 } | |
| 624 | |
| 625 error = zap_lookup(spa->spa_meta_objset, | |
| 626 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_SCRUB, | |
| 627 sizeof (uint64_t), 1, &spa->spa_errlog_scrub); | |
| 628 if (error != 0 && error != ENOENT) { | |
| 629 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 630 VDEV_AUX_CORRUPT_DATA); | |
| 631 error = EIO; | |
| 632 goto out; | |
| 633 } | |
| 789 | 634 |
| 635 /* | |
| 2926 | 636 * Load the history object. If we have an older pool, this |
| 637 * will not be present. | |
| 638 */ | |
| 639 error = zap_lookup(spa->spa_meta_objset, | |
| 640 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_HISTORY, | |
| 641 sizeof (uint64_t), 1, &spa->spa_history); | |
| 642 if (error != 0 && error != ENOENT) { | |
| 643 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 644 VDEV_AUX_CORRUPT_DATA); | |
| 645 error = EIO; | |
| 646 goto out; | |
| 647 } | |
| 648 | |
| 649 /* | |
| 2082 | 650 * Load any hot spares for this pool. |
| 651 */ | |
| 652 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
| 653 DMU_POOL_SPARES, sizeof (uint64_t), 1, &spa->spa_spares_object); | |
| 654 if (error != 0 && error != ENOENT) { | |
| 655 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 656 VDEV_AUX_CORRUPT_DATA); | |
| 657 error = EIO; | |
| 658 goto out; | |
| 659 } | |
| 660 if (error == 0) { | |
| 661 ASSERT(spa_version(spa) >= ZFS_VERSION_SPARES); | |
| 662 if (load_nvlist(spa, spa->spa_spares_object, | |
| 663 &spa->spa_sparelist) != 0) { | |
| 664 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 665 VDEV_AUX_CORRUPT_DATA); | |
| 666 error = EIO; | |
| 667 goto out; | |
| 668 } | |
| 669 | |
| 670 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 671 spa_load_spares(spa); | |
| 672 spa_config_exit(spa, FTAG); | |
| 673 } | |
| 674 | |
| 675 /* | |
|
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676 * Load the vdev state for all toplevel vdevs. |
| 789 | 677 */ |
|
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678 vdev_load(rvd); |
| 789 | 679 |
| 680 /* | |
| 681 * Propagate the leaf DTLs we just loaded all the way up the tree. | |
| 682 */ | |
| 1544 | 683 spa_config_enter(spa, RW_WRITER, FTAG); |
| 789 | 684 vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
| 1544 | 685 spa_config_exit(spa, FTAG); |
| 789 | 686 |
| 687 /* | |
| 688 * Check the state of the root vdev. If it can't be opened, it | |
| 689 * indicates one or more toplevel vdevs are faulted. | |
| 690 */ | |
| 1544 | 691 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
| 692 error = ENXIO; | |
| 693 goto out; | |
| 694 } | |
| 789 | 695 |
| 1544 | 696 if ((spa_mode & FWRITE) && state != SPA_LOAD_TRYIMPORT) { |
|
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697 dmu_tx_t *tx; |
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698 int need_update = B_FALSE; |
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699 int c; |
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700 |
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701 /* |
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702 * Claim log blocks that haven't been committed yet. |
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703 * This must all happen in a single txg. |
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704 */ |
|
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705 tx = dmu_tx_create_assigned(spa_get_dsl(spa), |
| 789 | 706 spa_first_txg(spa)); |
| 2417 | 707 (void) dmu_objset_find(spa->spa_name, |
| 708 zil_claim, tx, DS_FIND_CHILDREN); | |
| 789 | 709 dmu_tx_commit(tx); |
| 710 | |
| 711 spa->spa_sync_on = B_TRUE; | |
| 712 txg_sync_start(spa->spa_dsl_pool); | |
| 713 | |
| 714 /* | |
| 715 * Wait for all claims to sync. | |
| 716 */ | |
| 717 txg_wait_synced(spa->spa_dsl_pool, 0); | |
|
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718 |
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719 /* |
|
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720 * If the config cache is stale, or we have uninitialized |
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721 * metaslabs (see spa_vdev_add()), then update the config. |
|
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722 */ |
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723 if (config_cache_txg != spa->spa_config_txg || |
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724 state == SPA_LOAD_IMPORT) |
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725 need_update = B_TRUE; |
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726 |
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727 for (c = 0; c < rvd->vdev_children; c++) |
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728 if (rvd->vdev_child[c]->vdev_ms_array == 0) |
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729 need_update = B_TRUE; |
|
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730 |
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731 /* |
|
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732 * Update the config cache asychronously in case we're the |
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733 * root pool, in which case the config cache isn't writable yet. |
|
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734 */ |
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735 if (need_update) |
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736 spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); |
| 789 | 737 } |
| 738 | |
| 1544 | 739 error = 0; |
| 740 out: | |
| 2082 | 741 if (error && error != EBADF) |
| 1544 | 742 zfs_ereport_post(FM_EREPORT_ZFS_POOL, spa, NULL, NULL, 0, 0); |
| 743 spa->spa_load_state = SPA_LOAD_NONE; | |
| 744 spa->spa_ena = 0; | |
| 745 | |
| 746 return (error); | |
| 789 | 747 } |
| 748 | |
| 749 /* | |
| 750 * Pool Open/Import | |
| 751 * | |
| 752 * The import case is identical to an open except that the configuration is sent | |
| 753 * down from userland, instead of grabbed from the configuration cache. For the | |
| 754 * case of an open, the pool configuration will exist in the | |
| 755 * POOL_STATE_UNITIALIZED state. | |
| 756 * | |
| 757 * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
| 758 * the same time open the pool, without having to keep around the spa_t in some | |
| 759 * ambiguous state. | |
| 760 */ | |
| 761 static int | |
| 762 spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t **config) | |
| 763 { | |
| 764 spa_t *spa; | |
| 765 int error; | |
| 766 int loaded = B_FALSE; | |
| 767 int locked = B_FALSE; | |
| 768 | |
| 769 *spapp = NULL; | |
| 770 | |
| 771 /* | |
| 772 * As disgusting as this is, we need to support recursive calls to this | |
| 773 * function because dsl_dir_open() is called during spa_load(), and ends | |
| 774 * up calling spa_open() again. The real fix is to figure out how to | |
| 775 * avoid dsl_dir_open() calling this in the first place. | |
| 776 */ | |
| 777 if (mutex_owner(&spa_namespace_lock) != curthread) { | |
| 778 mutex_enter(&spa_namespace_lock); | |
| 779 locked = B_TRUE; | |
| 780 } | |
| 781 | |
| 782 if ((spa = spa_lookup(pool)) == NULL) { | |
| 783 if (locked) | |
| 784 mutex_exit(&spa_namespace_lock); | |
| 785 return (ENOENT); | |
| 786 } | |
| 787 if (spa->spa_state == POOL_STATE_UNINITIALIZED) { | |
| 788 | |
| 789 spa_activate(spa); | |
| 790 | |
|
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791 error = spa_load(spa, spa->spa_config, SPA_LOAD_OPEN, B_FALSE); |
| 789 | 792 |
| 793 if (error == EBADF) { | |
| 794 /* | |
|
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795 * If vdev_validate() returns failure (indicated by |
|
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796 * EBADF), it indicates that one of the vdevs indicates |
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797 * that the pool has been exported or destroyed. If |
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798 * this is the case, the config cache is out of sync and |
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799 * we should remove the pool from the namespace. |
| 789 | 800 */ |
| 2082 | 801 zfs_post_ok(spa, NULL); |
| 789 | 802 spa_unload(spa); |
| 803 spa_deactivate(spa); | |
| 804 spa_remove(spa); | |
| 805 spa_config_sync(); | |
| 806 if (locked) | |
| 807 mutex_exit(&spa_namespace_lock); | |
| 808 return (ENOENT); | |
| 1544 | 809 } |
| 810 | |
| 811 if (error) { | |
| 789 | 812 /* |
| 813 * We can't open the pool, but we still have useful | |
| 814 * information: the state of each vdev after the | |
| 815 * attempted vdev_open(). Return this to the user. | |
| 816 */ | |
|
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817 if (config != NULL && spa->spa_root_vdev != NULL) { |
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818 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 819 *config = spa_config_generate(spa, NULL, -1ULL, |
| 820 B_TRUE); | |
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821 spa_config_exit(spa, FTAG); |
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822 } |
| 789 | 823 spa_unload(spa); |
| 824 spa_deactivate(spa); | |
| 1544 | 825 spa->spa_last_open_failed = B_TRUE; |
| 789 | 826 if (locked) |
| 827 mutex_exit(&spa_namespace_lock); | |
| 828 *spapp = NULL; | |
| 829 return (error); | |
| 1544 | 830 } else { |
| 831 zfs_post_ok(spa, NULL); | |
| 832 spa->spa_last_open_failed = B_FALSE; | |
| 789 | 833 } |
| 834 | |
| 835 loaded = B_TRUE; | |
| 836 } | |
| 837 | |
| 838 spa_open_ref(spa, tag); | |
| 839 if (locked) | |
| 840 mutex_exit(&spa_namespace_lock); | |
| 841 | |
| 842 *spapp = spa; | |
| 843 | |
| 844 if (config != NULL) { | |
| 1544 | 845 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 846 *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
| 1544 | 847 spa_config_exit(spa, FTAG); |
| 789 | 848 } |
| 849 | |
| 850 /* | |
| 851 * If we just loaded the pool, resilver anything that's out of date. | |
| 852 */ | |
| 853 if (loaded && (spa_mode & FWRITE)) | |
| 854 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 855 | |
| 856 return (0); | |
| 857 } | |
| 858 | |
| 859 int | |
| 860 spa_open(const char *name, spa_t **spapp, void *tag) | |
| 861 { | |
| 862 return (spa_open_common(name, spapp, tag, NULL)); | |
| 863 } | |
| 864 | |
| 1544 | 865 /* |
| 866 * Lookup the given spa_t, incrementing the inject count in the process, | |
| 867 * preventing it from being exported or destroyed. | |
| 868 */ | |
| 869 spa_t * | |
| 870 spa_inject_addref(char *name) | |
| 871 { | |
| 872 spa_t *spa; | |
| 873 | |
| 874 mutex_enter(&spa_namespace_lock); | |
| 875 if ((spa = spa_lookup(name)) == NULL) { | |
| 876 mutex_exit(&spa_namespace_lock); | |
| 877 return (NULL); | |
| 878 } | |
| 879 spa->spa_inject_ref++; | |
| 880 mutex_exit(&spa_namespace_lock); | |
| 881 | |
| 882 return (spa); | |
| 883 } | |
| 884 | |
| 885 void | |
| 886 spa_inject_delref(spa_t *spa) | |
| 887 { | |
| 888 mutex_enter(&spa_namespace_lock); | |
| 889 spa->spa_inject_ref--; | |
| 890 mutex_exit(&spa_namespace_lock); | |
| 891 } | |
| 892 | |
| 2082 | 893 static void |
| 894 spa_add_spares(spa_t *spa, nvlist_t *config) | |
| 895 { | |
| 896 nvlist_t **spares; | |
| 897 uint_t i, nspares; | |
| 898 nvlist_t *nvroot; | |
| 899 uint64_t guid; | |
| 900 vdev_stat_t *vs; | |
| 901 uint_t vsc; | |
|
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902 uint64_t pool; |
| 2082 | 903 |
| 904 if (spa->spa_nspares == 0) | |
| 905 return; | |
| 906 | |
| 907 VERIFY(nvlist_lookup_nvlist(config, | |
| 908 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
| 909 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 910 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 911 if (nspares != 0) { | |
| 912 VERIFY(nvlist_add_nvlist_array(nvroot, | |
| 913 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 914 VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
| 915 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 916 | |
| 917 /* | |
| 918 * Go through and find any spares which have since been | |
| 919 * repurposed as an active spare. If this is the case, update | |
| 920 * their status appropriately. | |
| 921 */ | |
| 922 for (i = 0; i < nspares; i++) { | |
| 923 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 924 ZPOOL_CONFIG_GUID, &guid) == 0); | |
|
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925 if (spa_spare_exists(guid, &pool) && pool != 0ULL) { |
| 2082 | 926 VERIFY(nvlist_lookup_uint64_array( |
| 927 spares[i], ZPOOL_CONFIG_STATS, | |
| 928 (uint64_t **)&vs, &vsc) == 0); | |
| 929 vs->vs_state = VDEV_STATE_CANT_OPEN; | |
| 930 vs->vs_aux = VDEV_AUX_SPARED; | |
| 931 } | |
| 932 } | |
| 933 } | |
| 934 } | |
| 935 | |
| 789 | 936 int |
| 1544 | 937 spa_get_stats(const char *name, nvlist_t **config, char *altroot, size_t buflen) |
| 789 | 938 { |
| 939 int error; | |
| 940 spa_t *spa; | |
| 941 | |
| 942 *config = NULL; | |
| 943 error = spa_open_common(name, &spa, FTAG, config); | |
| 944 | |
| 2082 | 945 if (spa && *config != NULL) { |
| 1544 | 946 VERIFY(nvlist_add_uint64(*config, ZPOOL_CONFIG_ERRCOUNT, |
| 947 spa_get_errlog_size(spa)) == 0); | |
| 948 | |
| 2082 | 949 spa_add_spares(spa, *config); |
| 950 } | |
| 951 | |
| 1544 | 952 /* |
| 953 * We want to get the alternate root even for faulted pools, so we cheat | |
| 954 * and call spa_lookup() directly. | |
| 955 */ | |
| 956 if (altroot) { | |
| 957 if (spa == NULL) { | |
| 958 mutex_enter(&spa_namespace_lock); | |
| 959 spa = spa_lookup(name); | |
| 960 if (spa) | |
| 961 spa_altroot(spa, altroot, buflen); | |
| 962 else | |
| 963 altroot[0] = '\0'; | |
| 964 spa = NULL; | |
| 965 mutex_exit(&spa_namespace_lock); | |
| 966 } else { | |
| 967 spa_altroot(spa, altroot, buflen); | |
| 968 } | |
| 969 } | |
| 970 | |
| 789 | 971 if (spa != NULL) |
| 972 spa_close(spa, FTAG); | |
| 973 | |
| 974 return (error); | |
| 975 } | |
| 976 | |
| 977 /* | |
| 2082 | 978 * Validate that the 'spares' array is well formed. We must have an array of |
|
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979 * nvlists, each which describes a valid leaf vdev. If this is an import (mode |
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980 * is VDEV_ALLOC_SPARE), then we allow corrupted spares to be specified, as long |
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|
981 * as they are well-formed. |
| 2082 | 982 */ |
| 983 static int | |
| 984 spa_validate_spares(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
| 985 { | |
| 986 nvlist_t **spares; | |
| 987 uint_t i, nspares; | |
| 988 vdev_t *vd; | |
| 989 int error; | |
| 990 | |
| 991 /* | |
| 992 * It's acceptable to have no spares specified. | |
| 993 */ | |
| 994 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 995 &spares, &nspares) != 0) | |
| 996 return (0); | |
| 997 | |
| 998 if (nspares == 0) | |
| 999 return (EINVAL); | |
| 1000 | |
| 1001 /* | |
| 1002 * Make sure the pool is formatted with a version that supports hot | |
| 1003 * spares. | |
| 1004 */ | |
| 1005 if (spa_version(spa) < ZFS_VERSION_SPARES) | |
| 1006 return (ENOTSUP); | |
| 1007 | |
|
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1008 /* |
|
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|
1009 * Set the pending spare list so we correctly handle device in-use |
|
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1010 * checking. |
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1011 */ |
|
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1012 spa->spa_pending_spares = spares; |
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1013 spa->spa_pending_nspares = nspares; |
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1014 |
| 2082 | 1015 for (i = 0; i < nspares; i++) { |
| 1016 if ((error = spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
| 1017 mode)) != 0) | |
|
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1018 goto out; |
| 2082 | 1019 |
| 1020 if (!vd->vdev_ops->vdev_op_leaf) { | |
| 1021 vdev_free(vd); | |
|
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1022 error = EINVAL; |
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1023 goto out; |
| 2082 | 1024 } |
| 1025 | |
| 1026 vd->vdev_top = vd; | |
|
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1027 |
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1028 if ((error = vdev_open(vd)) == 0 && |
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1029 (error = vdev_label_init(vd, crtxg, |
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1030 VDEV_LABEL_SPARE)) == 0) { |
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1031 VERIFY(nvlist_add_uint64(spares[i], ZPOOL_CONFIG_GUID, |
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1032 vd->vdev_guid) == 0); |
| 2082 | 1033 } |
| 1034 | |
| 1035 vdev_free(vd); | |
|
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1036 |
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1037 if (error && mode != VDEV_ALLOC_SPARE) |
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1038 goto out; |
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1039 else |
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1040 error = 0; |
| 2082 | 1041 } |
| 1042 | |
|
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1043 out: |
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1044 spa->spa_pending_spares = NULL; |
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1045 spa->spa_pending_nspares = 0; |
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1046 return (error); |
| 2082 | 1047 } |
| 1048 | |
| 1049 /* | |
| 789 | 1050 * Pool Creation |
| 1051 */ | |
| 1052 int | |
|
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1053 spa_create(const char *pool, nvlist_t *nvroot, const char *altroot) |
| 789 | 1054 { |
| 1055 spa_t *spa; | |
|
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1056 vdev_t *rvd; |
| 789 | 1057 dsl_pool_t *dp; |
| 1058 dmu_tx_t *tx; | |
| 2082 | 1059 int c, error = 0; |
| 789 | 1060 uint64_t txg = TXG_INITIAL; |
| 2082 | 1061 nvlist_t **spares; |
| 1062 uint_t nspares; | |
| 789 | 1063 |
| 1064 /* | |
| 1065 * If this pool already exists, return failure. | |
| 1066 */ | |
| 1067 mutex_enter(&spa_namespace_lock); | |
| 1068 if (spa_lookup(pool) != NULL) { | |
| 1069 mutex_exit(&spa_namespace_lock); | |
| 1070 return (EEXIST); | |
| 1071 } | |
| 1072 | |
| 1073 /* | |
| 1074 * Allocate a new spa_t structure. | |
| 1075 */ | |
|
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1076 spa = spa_add(pool, altroot); |
| 789 | 1077 spa_activate(spa); |
| 1078 | |
| 1079 spa->spa_uberblock.ub_txg = txg - 1; | |
| 1760 | 1080 spa->spa_uberblock.ub_version = ZFS_VERSION; |
| 789 | 1081 spa->spa_ubsync = spa->spa_uberblock; |
| 1082 | |
|
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1083 /* |
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1084 * Create the root vdev. |
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1085 */ |
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1086 spa_config_enter(spa, RW_WRITER, FTAG); |
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1087 |
| 2082 | 1088 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); |
| 1089 | |
| 1090 ASSERT(error != 0 || rvd != NULL); | |
| 1091 ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
| 1092 | |
| 1093 if (error == 0 && rvd->vdev_children == 0) | |
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1094 error = EINVAL; |
| 2082 | 1095 |
| 1096 if (error == 0 && | |
| 1097 (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
| 1098 (error = spa_validate_spares(spa, nvroot, txg, | |
| 1099 VDEV_ALLOC_ADD)) == 0) { | |
| 1100 for (c = 0; c < rvd->vdev_children; c++) | |
| 1101 vdev_init(rvd->vdev_child[c], txg); | |
| 1102 vdev_config_dirty(rvd); | |
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1103 } |
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1104 |
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1105 spa_config_exit(spa, FTAG); |
| 789 | 1106 |
| 2082 | 1107 if (error != 0) { |
| 789 | 1108 spa_unload(spa); |
| 1109 spa_deactivate(spa); | |
| 1110 spa_remove(spa); | |
| 1111 mutex_exit(&spa_namespace_lock); | |
| 1112 return (error); | |
| 1113 } | |
| 1114 | |
| 2082 | 1115 /* |
| 1116 * Get the list of spares, if specified. | |
| 1117 */ | |
| 1118 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1119 &spares, &nspares) == 0) { | |
| 1120 VERIFY(nvlist_alloc(&spa->spa_sparelist, NV_UNIQUE_NAME, | |
| 1121 KM_SLEEP) == 0); | |
| 1122 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1123 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1124 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1125 spa_load_spares(spa); | |
| 1126 spa_config_exit(spa, FTAG); | |
| 1127 spa->spa_sync_spares = B_TRUE; | |
| 1128 } | |
| 1129 | |
| 789 | 1130 spa->spa_dsl_pool = dp = dsl_pool_create(spa, txg); |
| 1131 spa->spa_meta_objset = dp->dp_meta_objset; | |
| 1132 | |
| 1133 tx = dmu_tx_create_assigned(dp, txg); | |
| 1134 | |
| 1135 /* | |
| 1136 * Create the pool config object. | |
| 1137 */ | |
| 1138 spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
| 1139 DMU_OT_PACKED_NVLIST, 1 << 14, | |
| 1140 DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); | |
| 1141 | |
| 1544 | 1142 if (zap_add(spa->spa_meta_objset, |
| 789 | 1143 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
| 1544 | 1144 sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { |
| 1145 cmn_err(CE_PANIC, "failed to add pool config"); | |
| 1146 } | |
| 789 | 1147 |
| 2082 | 1148 /* Newly created pools are always deflated. */ |
| 1149 spa->spa_deflate = TRUE; | |
| 1150 if (zap_add(spa->spa_meta_objset, | |
| 1151 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 1152 sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
| 1153 cmn_err(CE_PANIC, "failed to add deflate"); | |
| 1154 } | |
| 1155 | |
| 789 | 1156 /* |
| 1157 * Create the deferred-free bplist object. Turn off compression | |
| 1158 * because sync-to-convergence takes longer if the blocksize | |
| 1159 * keeps changing. | |
| 1160 */ | |
| 1161 spa->spa_sync_bplist_obj = bplist_create(spa->spa_meta_objset, | |
| 1162 1 << 14, tx); | |
| 1163 dmu_object_set_compress(spa->spa_meta_objset, spa->spa_sync_bplist_obj, | |
| 1164 ZIO_COMPRESS_OFF, tx); | |
| 1165 | |
| 1544 | 1166 if (zap_add(spa->spa_meta_objset, |
| 789 | 1167 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, |
| 1544 | 1168 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj, tx) != 0) { |
| 1169 cmn_err(CE_PANIC, "failed to add bplist"); | |
| 1170 } | |
| 789 | 1171 |
| 2926 | 1172 /* |
| 1173 * Create the pool's history object. | |
| 1174 */ | |
| 1175 spa_history_create_obj(spa, tx); | |
| 1176 | |
| 789 | 1177 dmu_tx_commit(tx); |
| 1178 | |
| 1179 spa->spa_sync_on = B_TRUE; | |
| 1180 txg_sync_start(spa->spa_dsl_pool); | |
| 1181 | |
| 1182 /* | |
| 1183 * We explicitly wait for the first transaction to complete so that our | |
| 1184 * bean counters are appropriately updated. | |
| 1185 */ | |
| 1186 txg_wait_synced(spa->spa_dsl_pool, txg); | |
| 1187 | |
| 1188 spa_config_sync(); | |
| 1189 | |
| 1190 mutex_exit(&spa_namespace_lock); | |
| 1191 | |
| 1192 return (0); | |
| 1193 } | |
| 1194 | |
| 1195 /* | |
| 1196 * Import the given pool into the system. We set up the necessary spa_t and | |
| 1197 * then call spa_load() to do the dirty work. | |
| 1198 */ | |
| 1199 int | |
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1200 spa_import(const char *pool, nvlist_t *config, const char *altroot) |
| 789 | 1201 { |
| 1202 spa_t *spa; | |
| 1203 int error; | |
| 2082 | 1204 nvlist_t *nvroot; |
| 1205 nvlist_t **spares; | |
| 1206 uint_t nspares; | |
| 789 | 1207 |
| 1208 if (!(spa_mode & FWRITE)) | |
| 1209 return (EROFS); | |
| 1210 | |
| 1211 /* | |
| 1212 * If a pool with this name exists, return failure. | |
| 1213 */ | |
| 1214 mutex_enter(&spa_namespace_lock); | |
| 1215 if (spa_lookup(pool) != NULL) { | |
| 1216 mutex_exit(&spa_namespace_lock); | |
| 1217 return (EEXIST); | |
| 1218 } | |
| 1219 | |
| 1220 /* | |
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1221 * Create and initialize the spa structure. |
| 789 | 1222 */ |
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1223 spa = spa_add(pool, altroot); |
| 789 | 1224 spa_activate(spa); |
| 1225 | |
| 1226 /* | |
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1227 * Pass off the heavy lifting to spa_load(). |
| 1732 | 1228 * Pass TRUE for mosconfig because the user-supplied config |
| 1229 * is actually the one to trust when doing an import. | |
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1230 */ |
| 1732 | 1231 error = spa_load(spa, config, SPA_LOAD_IMPORT, B_TRUE); |
| 789 | 1232 |
| 2082 | 1233 spa_config_enter(spa, RW_WRITER, FTAG); |
| 1234 /* | |
| 1235 * Toss any existing sparelist, as it doesn't have any validity anymore, | |
| 1236 * and conflicts with spa_has_spare(). | |
| 1237 */ | |
| 1238 if (spa->spa_sparelist) { | |
| 1239 nvlist_free(spa->spa_sparelist); | |
| 1240 spa->spa_sparelist = NULL; | |
| 1241 spa_load_spares(spa); | |
| 1242 } | |
| 1243 | |
| 1244 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
| 1245 &nvroot) == 0); | |
| 1246 if (error == 0) | |
| 1247 error = spa_validate_spares(spa, nvroot, -1ULL, | |
| 1248 VDEV_ALLOC_SPARE); | |
| 1249 spa_config_exit(spa, FTAG); | |
| 1250 | |
| 1251 if (error != 0) { | |
| 789 | 1252 spa_unload(spa); |
| 1253 spa_deactivate(spa); | |
| 1254 spa_remove(spa); | |
| 1255 mutex_exit(&spa_namespace_lock); | |
| 1256 return (error); | |
| 1257 } | |
| 1258 | |
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1259 /* |
| 2082 | 1260 * Override any spares as specified by the user, as these may have |
| 1261 * correct device names/devids, etc. | |
| 1262 */ | |
| 1263 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1264 &spares, &nspares) == 0) { | |
| 1265 if (spa->spa_sparelist) | |
| 1266 VERIFY(nvlist_remove(spa->spa_sparelist, | |
| 1267 ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 1268 else | |
| 1269 VERIFY(nvlist_alloc(&spa->spa_sparelist, | |
| 1270 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 1271 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1272 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1273 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1274 spa_load_spares(spa); | |
| 1275 spa_config_exit(spa, FTAG); | |
| 1276 spa->spa_sync_spares = B_TRUE; | |
| 1277 } | |
| 1278 | |
| 1279 /* | |
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1280 * Update the config cache to include the newly-imported pool. |
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1281 */ |
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1282 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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1283 |
| 789 | 1284 mutex_exit(&spa_namespace_lock); |
| 1285 | |
| 1286 /* | |
| 1287 * Resilver anything that's out of date. | |
| 1288 */ | |
| 1289 if (spa_mode & FWRITE) | |
| 1290 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 1291 | |
| 1292 return (0); | |
| 1293 } | |
| 1294 | |
| 1295 /* | |
| 1296 * This (illegal) pool name is used when temporarily importing a spa_t in order | |
| 1297 * to get the vdev stats associated with the imported devices. | |
| 1298 */ | |
| 1299 #define TRYIMPORT_NAME "$import" | |
| 1300 | |
| 1301 nvlist_t * | |
| 1302 spa_tryimport(nvlist_t *tryconfig) | |
| 1303 { | |
| 1304 nvlist_t *config = NULL; | |
| 1305 char *poolname; | |
| 1306 spa_t *spa; | |
| 1307 uint64_t state; | |
| 1308 | |
| 1309 if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
| 1310 return (NULL); | |
| 1311 | |
| 1312 if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
| 1313 return (NULL); | |
| 1314 | |
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1315 /* |
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1316 * Create and initialize the spa structure. |
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1317 */ |
| 789 | 1318 mutex_enter(&spa_namespace_lock); |
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1319 spa = spa_add(TRYIMPORT_NAME, NULL); |
| 789 | 1320 spa_activate(spa); |
| 1321 | |
| 1322 /* | |
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1323 * Pass off the heavy lifting to spa_load(). |
| 1732 | 1324 * Pass TRUE for mosconfig because the user-supplied config |
| 1325 * is actually the one to trust when doing an import. | |
| 789 | 1326 */ |
| 1732 | 1327 (void) spa_load(spa, tryconfig, SPA_LOAD_TRYIMPORT, B_TRUE); |
| 789 | 1328 |
| 1329 /* | |
| 1330 * If 'tryconfig' was at least parsable, return the current config. | |
| 1331 */ | |
| 1332 if (spa->spa_root_vdev != NULL) { | |
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1333 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 1334 config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
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1335 spa_config_exit(spa, FTAG); |
| 789 | 1336 VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
| 1337 poolname) == 0); | |
| 1338 VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
| 1339 state) == 0); | |
| 2082 | 1340 |
| 1341 /* | |
| 1342 * Add the list of hot spares. | |
| 1343 */ | |
| 1344 spa_add_spares(spa, config); | |
| 789 | 1345 } |
| 1346 | |
| 1347 spa_unload(spa); | |
| 1348 spa_deactivate(spa); | |
| 1349 spa_remove(spa); | |
| 1350 mutex_exit(&spa_namespace_lock); | |
| 1351 | |
| 1352 return (config); | |
| 1353 } | |
| 1354 | |
| 1355 /* | |
| 1356 * Pool export/destroy | |
| 1357 * | |
| 1358 * The act of destroying or exporting a pool is very simple. We make sure there | |
| 1359 * is no more pending I/O and any references to the pool are gone. Then, we | |
| 1360 * update the pool state and sync all the labels to disk, removing the | |
| 1361 * configuration from the cache afterwards. | |
| 1362 */ | |
| 1363 static int | |
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1364 spa_export_common(char *pool, int new_state, nvlist_t **oldconfig) |
| 789 | 1365 { |
| 1366 spa_t *spa; | |
| 1367 | |
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1368 if (oldconfig) |
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1369 *oldconfig = NULL; |
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1370 |
| 789 | 1371 if (!(spa_mode & FWRITE)) |
| 1372 return (EROFS); | |
| 1373 | |
| 1374 mutex_enter(&spa_namespace_lock); | |
| 1375 if ((spa = spa_lookup(pool)) == NULL) { | |
| 1376 mutex_exit(&spa_namespace_lock); | |
| 1377 return (ENOENT); | |
| 1378 } | |
| 1379 | |
| 1380 /* | |
| 1544 | 1381 * Put a hold on the pool, drop the namespace lock, stop async tasks, |
| 1382 * reacquire the namespace lock, and see if we can export. | |
| 1383 */ | |
| 1384 spa_open_ref(spa, FTAG); | |
| 1385 mutex_exit(&spa_namespace_lock); | |
| 1386 spa_async_suspend(spa); | |
| 1387 mutex_enter(&spa_namespace_lock); | |
| 1388 spa_close(spa, FTAG); | |
| 1389 | |
| 1390 /* | |
| 789 | 1391 * The pool will be in core if it's openable, |
| 1392 * in which case we can modify its state. | |
| 1393 */ | |
| 1394 if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) { | |
| 1395 /* | |
| 1396 * Objsets may be open only because they're dirty, so we | |
| 1397 * have to force it to sync before checking spa_refcnt. | |
| 1398 */ | |
| 1399 spa_scrub_suspend(spa); | |
| 1400 txg_wait_synced(spa->spa_dsl_pool, 0); | |
| 1401 | |
| 1544 | 1402 /* |
| 1403 * A pool cannot be exported or destroyed if there are active | |
| 1404 * references. If we are resetting a pool, allow references by | |
| 1405 * fault injection handlers. | |
| 1406 */ | |
| 1407 if (!spa_refcount_zero(spa) || | |
| 1408 (spa->spa_inject_ref != 0 && | |
| 1409 new_state != POOL_STATE_UNINITIALIZED)) { | |
| 789 | 1410 spa_scrub_resume(spa); |
| 1544 | 1411 spa_async_resume(spa); |
| 789 | 1412 mutex_exit(&spa_namespace_lock); |
| 1413 return (EBUSY); | |
| 1414 } | |
| 1415 | |
| 1416 spa_scrub_resume(spa); | |
| 1417 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); | |
| 1418 | |
| 1419 /* | |
| 1420 * We want this to be reflected on every label, | |
| 1421 * so mark them all dirty. spa_unload() will do the | |
| 1422 * final sync that pushes these changes out. | |
| 1423 */ | |
| 1544 | 1424 if (new_state != POOL_STATE_UNINITIALIZED) { |
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1425 spa_config_enter(spa, RW_WRITER, FTAG); |
| 1544 | 1426 spa->spa_state = new_state; |
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1427 spa->spa_final_txg = spa_last_synced_txg(spa) + 1; |
| 1544 | 1428 vdev_config_dirty(spa->spa_root_vdev); |
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1429 spa_config_exit(spa, FTAG); |
| 1544 | 1430 } |
| 789 | 1431 } |
| 1432 | |
| 1433 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
| 1434 spa_unload(spa); | |
| 1435 spa_deactivate(spa); | |
| 1436 } | |
| 1437 | |
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1438 if (oldconfig && spa->spa_config) |
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1439 VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); |
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1440 |
| 1544 | 1441 if (new_state != POOL_STATE_UNINITIALIZED) { |
| 1442 spa_remove(spa); | |
| 1443 spa_config_sync(); | |
| 1444 } | |
| 789 | 1445 mutex_exit(&spa_namespace_lock); |
| 1446 | |
| 1447 return (0); | |
| 1448 } | |
| 1449 | |
| 1450 /* | |
| 1451 * Destroy a storage pool. | |
| 1452 */ | |
| 1453 int | |
| 1454 spa_destroy(char *pool) | |
| 1455 { | |
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1456 return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL)); |
| 789 | 1457 } |
| 1458 | |
| 1459 /* | |
| 1460 * Export a storage pool. | |
| 1461 */ | |
| 1462 int | |
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1463 spa_export(char *pool, nvlist_t **oldconfig) |
| 789 | 1464 { |
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1465 return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig)); |
| 789 | 1466 } |
| 1467 | |
| 1468 /* | |
| 1544 | 1469 * Similar to spa_export(), this unloads the spa_t without actually removing it |
| 1470 * from the namespace in any way. | |
| 1471 */ | |
| 1472 int | |
| 1473 spa_reset(char *pool) | |
| 1474 { | |
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1475 return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL)); |
| 1544 | 1476 } |
| 1477 | |
| 1478 | |
| 1479 /* | |
| 789 | 1480 * ========================================================================== |
| 1481 * Device manipulation | |
| 1482 * ========================================================================== | |
| 1483 */ | |
| 1484 | |
| 1485 /* | |
| 1486 * Add capacity to a storage pool. | |
| 1487 */ | |
| 1488 int | |
| 1489 spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
| 1490 { | |
| 1491 uint64_t txg; | |
|
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1492 int c, error; |
| 789 | 1493 vdev_t *rvd = spa->spa_root_vdev; |
|
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1494 vdev_t *vd, *tvd; |
| 2082 | 1495 nvlist_t **spares; |
| 1496 uint_t i, nspares; | |
| 789 | 1497 |
| 1498 txg = spa_vdev_enter(spa); | |
| 1499 | |
| 2082 | 1500 if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, |
| 1501 VDEV_ALLOC_ADD)) != 0) | |
| 1502 return (spa_vdev_exit(spa, NULL, txg, error)); | |
| 1503 | |
|
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1504 spa->spa_pending_vdev = vd; |
| 789 | 1505 |
| 2082 | 1506 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, |
| 1507 &spares, &nspares) != 0) | |
| 1508 nspares = 0; | |
| 1509 | |
|
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1510 if (vd->vdev_children == 0 && nspares == 0) { |
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1511 spa->spa_pending_vdev = NULL; |
| 2082 | 1512 return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
|
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1513 } |
| 2082 | 1514 |
| 1515 if (vd->vdev_children != 0) { | |
|
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1516 if ((error = vdev_create(vd, txg, B_FALSE)) != 0) { |
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1517 spa->spa_pending_vdev = NULL; |
| 2082 | 1518 return (spa_vdev_exit(spa, vd, txg, error)); |
| 1519 } | |
| 1520 } | |
| 1521 | |
|
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1522 /* |
|
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1523 * We must validate the spares after checking the children. Otherwise, |
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1524 * vdev_inuse() will blindly overwrite the spare. |
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1525 */ |
|
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1526 if ((error = spa_validate_spares(spa, nvroot, txg, |
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1527 VDEV_ALLOC_ADD)) != 0) { |
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1528 spa->spa_pending_vdev = NULL; |
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1529 return (spa_vdev_exit(spa, vd, txg, error)); |
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1530 } |
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1531 |
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1532 spa->spa_pending_vdev = NULL; |
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1533 |
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1534 /* |
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1535 * Transfer each new top-level vdev from vd to rvd. |
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1536 */ |
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1537 for (c = 0; c < vd->vdev_children; c++) { |
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1538 tvd = vd->vdev_child[c]; |
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1539 vdev_remove_child(vd, tvd); |
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1540 tvd->vdev_id = rvd->vdev_children; |
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1541 vdev_add_child(rvd, tvd); |
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1542 vdev_config_dirty(tvd); |
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1543 } |
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1544 |
| 2082 | 1545 if (nspares != 0) { |
| 1546 if (spa->spa_sparelist != NULL) { | |
| 1547 nvlist_t **oldspares; | |
| 1548 uint_t oldnspares; | |
| 1549 nvlist_t **newspares; | |
| 1550 | |
| 1551 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 1552 ZPOOL_CONFIG_SPARES, &oldspares, &oldnspares) == 0); | |
| 1553 | |
| 1554 newspares = kmem_alloc(sizeof (void *) * | |
| 1555 (nspares + oldnspares), KM_SLEEP); | |
| 1556 for (i = 0; i < oldnspares; i++) | |
| 1557 VERIFY(nvlist_dup(oldspares[i], | |
| 1558 &newspares[i], KM_SLEEP) == 0); | |
| 1559 for (i = 0; i < nspares; i++) | |
| 1560 VERIFY(nvlist_dup(spares[i], | |
| 1561 &newspares[i + oldnspares], | |
| 1562 KM_SLEEP) == 0); | |
| 1563 | |
| 1564 VERIFY(nvlist_remove(spa->spa_sparelist, | |
| 1565 ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 1566 | |
| 1567 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1568 ZPOOL_CONFIG_SPARES, newspares, | |
| 1569 nspares + oldnspares) == 0); | |
| 1570 for (i = 0; i < oldnspares + nspares; i++) | |
| 1571 nvlist_free(newspares[i]); | |
| 1572 kmem_free(newspares, (oldnspares + nspares) * | |
| 1573 sizeof (void *)); | |
| 1574 } else { | |
| 1575 VERIFY(nvlist_alloc(&spa->spa_sparelist, | |
| 1576 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 1577 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1578 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1579 } | |
| 1580 | |
| 1581 spa_load_spares(spa); | |
| 1582 spa->spa_sync_spares = B_TRUE; | |
| 789 | 1583 } |
| 1584 | |
| 1585 /* | |
|
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1586 * We have to be careful when adding new vdevs to an existing pool. |
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1587 * If other threads start allocating from these vdevs before we |
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1588 * sync the config cache, and we lose power, then upon reboot we may |
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1589 * fail to open the pool because there are DVAs that the config cache |
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1590 * can't translate. Therefore, we first add the vdevs without |
|
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1591 * initializing metaslabs; sync the config cache (via spa_vdev_exit()); |
|
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1592 * and then let spa_config_update() initialize the new metaslabs. |
|
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1593 * |
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1594 * spa_load() checks for added-but-not-initialized vdevs, so that |
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1595 * if we lose power at any point in this sequence, the remaining |
|
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1596 * steps will be completed the next time we load the pool. |
| 789 | 1597 */ |
|
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1598 (void) spa_vdev_exit(spa, vd, txg, 0); |
|
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1599 |
|
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1600 mutex_enter(&spa_namespace_lock); |
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1601 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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1602 mutex_exit(&spa_namespace_lock); |
| 789 | 1603 |
|
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1604 return (0); |
| 789 | 1605 } |
| 1606 | |
| 1607 /* | |
| 1608 * Attach a device to a mirror. The arguments are the path to any device | |
| 1609 * in the mirror, and the nvroot for the new device. If the path specifies | |
| 1610 * a device that is not mirrored, we automatically insert the mirror vdev. | |
| 1611 * | |
| 1612 * If 'replacing' is specified, the new device is intended to replace the | |
| 1613 * existing device; in this case the two devices are made into their own | |
| 1614 * mirror using the 'replacing' vdev, which is functionally idendical to | |
| 1615 * the mirror vdev (it actually reuses all the same ops) but has a few | |
| 1616 * extra rules: you can't attach to it after it's been created, and upon | |
| 1617 * completion of resilvering, the first disk (the one being replaced) | |
| 1618 * is automatically detached. | |
| 1619 */ | |
| 1620 int | |
| 1544 | 1621 spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) |
| 789 | 1622 { |
| 1623 uint64_t txg, open_txg; | |
| 1624 int error; | |
| 1625 vdev_t *rvd = spa->spa_root_vdev; | |
| 1626 vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; | |
| 2082 | 1627 vdev_ops_t *pvops; |
| 789 | 1628 |
| 1629 txg = spa_vdev_enter(spa); | |
| 1630 | |
| 1544 | 1631 oldvd = vdev_lookup_by_guid(rvd, guid); |
| 789 | 1632 |
| 1633 if (oldvd == NULL) | |
| 1634 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
| 1635 | |
|
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1636 if (!oldvd->vdev_ops->vdev_op_leaf) |
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1637 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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1638 |
| 789 | 1639 pvd = oldvd->vdev_parent; |
| 1640 | |
| 2082 | 1641 if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, |
| 1642 VDEV_ALLOC_ADD)) != 0 || newrootvd->vdev_children != 1) | |
| 789 | 1643 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); |
| 1644 | |
| 1645 newvd = newrootvd->vdev_child[0]; | |
| 1646 | |
| 1647 if (!newvd->vdev_ops->vdev_op_leaf) | |
| 1648 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
| 1649 | |
| 2082 | 1650 if ((error = vdev_create(newrootvd, txg, replacing)) != 0) |
| 789 | 1651 return (spa_vdev_exit(spa, newrootvd, txg, error)); |
| 1652 | |
| 2082 | 1653 if (!replacing) { |
| 1654 /* | |
| 1655 * For attach, the only allowable parent is a mirror or the root | |
| 1656 * vdev. | |
| 1657 */ | |
| 1658 if (pvd->vdev_ops != &vdev_mirror_ops && | |
| 1659 pvd->vdev_ops != &vdev_root_ops) | |
| 1660 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1661 | |
| 1662 pvops = &vdev_mirror_ops; | |
| 1663 } else { | |
| 1664 /* | |
| 1665 * Active hot spares can only be replaced by inactive hot | |
| 1666 * spares. | |
| 1667 */ | |
| 1668 if (pvd->vdev_ops == &vdev_spare_ops && | |
| 1669 pvd->vdev_child[1] == oldvd && | |
| 1670 !spa_has_spare(spa, newvd->vdev_guid)) | |
| 1671 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1672 | |
| 1673 /* | |
| 1674 * If the source is a hot spare, and the parent isn't already a | |
| 1675 * spare, then we want to create a new hot spare. Otherwise, we | |
|
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1676 * want to create a replacing vdev. The user is not allowed to |
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1677 * attach to a spared vdev child unless the 'isspare' state is |
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1678 * the same (spare replaces spare, non-spare replaces |
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1679 * non-spare). |
| 2082 | 1680 */ |
| 1681 if (pvd->vdev_ops == &vdev_replacing_ops) | |
| 1682 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
|
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1683 else if (pvd->vdev_ops == &vdev_spare_ops && |
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1684 newvd->vdev_isspare != oldvd->vdev_isspare) |
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1685 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
| 2082 | 1686 else if (pvd->vdev_ops != &vdev_spare_ops && |
| 1687 newvd->vdev_isspare) | |
| 1688 pvops = &vdev_spare_ops; | |
| 1689 else | |
| 1690 pvops = &vdev_replacing_ops; | |
| 1691 } | |
| 1692 | |
|
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1693 /* |
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1694 * Compare the new device size with the replaceable/attachable |
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1695 * device size. |
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1696 */ |
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1697 if (newvd->vdev_psize < vdev_get_rsize(oldvd)) |
| 789 | 1698 return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
| 1699 | |
| 1732 | 1700 /* |
| 1701 * The new device cannot have a higher alignment requirement | |
| 1702 * than the top-level vdev. | |
| 1703 */ | |
| 1704 if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
| 789 | 1705 return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); |
| 1706 | |
| 1707 /* | |
| 1708 * If this is an in-place replacement, update oldvd's path and devid | |
| 1709 * to make it distinguishable from newvd, and unopenable from now on. | |
| 1710 */ | |
| 1711 if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
| 1712 spa_strfree(oldvd->vdev_path); | |
| 1713 oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
| 1714 KM_SLEEP); | |
| 1715 (void) sprintf(oldvd->vdev_path, "%s/%s", | |
| 1716 newvd->vdev_path, "old"); | |
| 1717 if (oldvd->vdev_devid != NULL) { | |
| 1718 spa_strfree(oldvd->vdev_devid); | |
| 1719 oldvd->vdev_devid = NULL; | |
| 1720 } | |
| 1721 } | |
| 1722 | |
| 1723 /* | |
| 2082 | 1724 * If the parent is not a mirror, or if we're replacing, insert the new |
| 1725 * mirror/replacing/spare vdev above oldvd. | |
| 789 | 1726 */ |
| 1727 if (pvd->vdev_ops != pvops) | |
| 1728 pvd = vdev_add_parent(oldvd, pvops); | |
| 1729 | |
| 1730 ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
| 1731 ASSERT(pvd->vdev_ops == pvops); | |
| 1732 ASSERT(oldvd->vdev_parent == pvd); | |
| 1733 | |
| 1734 /* | |
| 1735 * Extract the new device from its root and add it to pvd. | |
| 1736 */ | |
| 1737 vdev_remove_child(newrootvd, newvd); | |
| 1738 newvd->vdev_id = pvd->vdev_children; | |
| 1739 vdev_add_child(pvd, newvd); | |
| 1740 | |
| 1544 | 1741 /* |
| 1742 * If newvd is smaller than oldvd, but larger than its rsize, | |
| 1743 * the addition of newvd may have decreased our parent's asize. | |
| 1744 */ | |
| 1745 pvd->vdev_asize = MIN(pvd->vdev_asize, newvd->vdev_asize); | |
| 1746 | |
| 789 | 1747 tvd = newvd->vdev_top; |
| 1748 ASSERT(pvd->vdev_top == tvd); | |
| 1749 ASSERT(tvd->vdev_parent == rvd); | |
| 1750 | |
| 1751 vdev_config_dirty(tvd); | |
| 1752 | |
| 1753 /* | |
| 1754 * Set newvd's DTL to [TXG_INITIAL, open_txg]. It will propagate | |
| 1755 * upward when spa_vdev_exit() calls vdev_dtl_reassess(). | |
| 1756 */ | |
| 1757 open_txg = txg + TXG_CONCURRENT_STATES - 1; | |
| 1758 | |
| 1759 mutex_enter(&newvd->vdev_dtl_lock); | |
| 1760 space_map_add(&newvd->vdev_dtl_map, TXG_INITIAL, | |
| 1761 open_txg - TXG_INITIAL + 1); | |
| 1762 mutex_exit(&newvd->vdev_dtl_lock); | |
| 1763 | |
|
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1764 if (newvd->vdev_isspare) |
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1765 spa_spare_activate(newvd); |
| 1544 | 1766 |
| 789 | 1767 /* |
| 1768 * Mark newvd's DTL dirty in this txg. | |
| 1769 */ | |
| 1732 | 1770 vdev_dirty(tvd, VDD_DTL, newvd, txg); |
| 789 | 1771 |
| 1772 (void) spa_vdev_exit(spa, newrootvd, open_txg, 0); | |
| 1773 | |
| 1774 /* | |
| 1775 * Kick off a resilver to update newvd. | |
| 1776 */ | |
| 1777 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 1778 | |
| 1779 return (0); | |
| 1780 } | |
| 1781 | |
| 1782 /* | |
| 1783 * Detach a device from a mirror or replacing vdev. | |
| 1784 * If 'replace_done' is specified, only detach if the parent | |
| 1785 * is a replacing vdev. | |
| 1786 */ | |
| 1787 int | |
| 1544 | 1788 spa_vdev_detach(spa_t *spa, uint64_t guid, int replace_done) |
| 789 | 1789 { |
| 1790 uint64_t txg; | |
| 1791 int c, t, error; | |
| 1792 vdev_t *rvd = spa->spa_root_vdev; | |
| 1793 vdev_t *vd, *pvd, *cvd, *tvd; | |
| 2082 | 1794 boolean_t unspare = B_FALSE; |
| 1795 uint64_t unspare_guid; | |
| 789 | 1796 |
| 1797 txg = spa_vdev_enter(spa); | |
| 1798 | |
| 1544 | 1799 vd = vdev_lookup_by_guid(rvd, guid); |
| 789 | 1800 |
| 1801 if (vd == NULL) | |
| 1802 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
| 1803 | |
|
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1804 if (!vd->vdev_ops->vdev_op_leaf) |
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1805 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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1806 |
| 789 | 1807 pvd = vd->vdev_parent; |
| 1808 | |
| 1809 /* | |
| 1810 * If replace_done is specified, only remove this device if it's | |
| 2082 | 1811 * the first child of a replacing vdev. For the 'spare' vdev, either |
| 1812 * disk can be removed. | |
| 789 | 1813 */ |
| 2082 | 1814 if (replace_done) { |
| 1815 if (pvd->vdev_ops == &vdev_replacing_ops) { | |
| 1816 if (vd->vdev_id != 0) | |
| 1817 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
| 1818 } else if (pvd->vdev_ops != &vdev_spare_ops) { | |
| 1819 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
| 1820 } | |
| 1821 } | |
| 1822 | |
| 1823 ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
| 1824 spa_version(spa) >= ZFS_VERSION_SPARES); | |
| 789 | 1825 |
| 1826 /* | |
| 2082 | 1827 * Only mirror, replacing, and spare vdevs support detach. |
| 789 | 1828 */ |
| 1829 if (pvd->vdev_ops != &vdev_replacing_ops && | |
| 2082 | 1830 pvd->vdev_ops != &vdev_mirror_ops && |
| 1831 pvd->vdev_ops != &vdev_spare_ops) | |
| 789 | 1832 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
| 1833 | |
| 1834 /* | |
| 1835 * If there's only one replica, you can't detach it. | |
| 1836 */ | |
| 1837 if (pvd->vdev_children <= 1) | |
| 1838 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
| 1839 | |
| 1840 /* | |
| 1841 * If all siblings have non-empty DTLs, this device may have the only | |
| 1842 * valid copy of the data, which means we cannot safely detach it. | |
| 1843 * | |
| 1844 * XXX -- as in the vdev_offline() case, we really want a more | |
| 1845 * precise DTL check. | |
| 1846 */ | |
| 1847 for (c = 0; c < pvd->vdev_children; c++) { | |
| 1848 uint64_t dirty; | |
| 1849 | |
| 1850 cvd = pvd->vdev_child[c]; | |
| 1851 if (cvd == vd) | |
| 1852 continue; | |
| 1853 if (vdev_is_dead(cvd)) | |
| 1854 continue; | |
| 1855 mutex_enter(&cvd->vdev_dtl_lock); | |
| 1856 dirty = cvd->vdev_dtl_map.sm_space | | |
| 1857 cvd->vdev_dtl_scrub.sm_space; | |
| 1858 mutex_exit(&cvd->vdev_dtl_lock); | |
| 1859 if (!dirty) | |
| 1860 break; | |
| 1861 } | |
| 2082 | 1862 |
| 1863 /* | |
| 1864 * If we are a replacing or spare vdev, then we can always detach the | |
| 1865 * latter child, as that is how one cancels the operation. | |
| 1866 */ | |
| 1867 if ((pvd->vdev_ops == &vdev_mirror_ops || vd->vdev_id != 1) && | |
| 1868 c == pvd->vdev_children) | |
| 789 | 1869 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
| 1870 | |
| 1871 /* | |
| 2082 | 1872 * If we are detaching the original disk from a spare, then it implies |
| 1873 * that the spare should become a real disk, and be removed from the | |
| 1874 * active spare list for the pool. | |
| 1875 */ | |
| 1876 if (pvd->vdev_ops == &vdev_spare_ops && | |
| 1877 vd->vdev_id == 0) | |
| 1878 unspare = B_TRUE; | |
| 1879 | |
| 1880 /* | |
| 789 | 1881 * Erase the disk labels so the disk can be used for other things. |
| 1882 * This must be done after all other error cases are handled, | |
| 1883 * but before we disembowel vd (so we can still do I/O to it). | |
| 1884 * But if we can't do it, don't treat the error as fatal -- | |
| 1885 * it may be that the unwritability of the disk is the reason | |
| 1886 * it's being detached! | |
| 1887 */ | |
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1888 error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); |
| 789 | 1889 |
| 1890 /* | |
| 1891 * Remove vd from its parent and compact the parent's children. | |
| 1892 */ | |
| 1893 vdev_remove_child(pvd, vd); | |
| 1894 vdev_compact_children(pvd); | |
| 1895 | |
| 1896 /* | |
| 1897 * Remember one of the remaining children so we can get tvd below. | |
| 1898 */ | |
| 1899 cvd = pvd->vdev_child[0]; | |
| 1900 | |
| 1901 /* | |
| 2082 | 1902 * If we need to remove the remaining child from the list of hot spares, |
| 1903 * do it now, marking the vdev as no longer a spare in the process. We | |
| 1904 * must do this before vdev_remove_parent(), because that can change the | |
| 1905 * GUID if it creates a new toplevel GUID. | |
| 1906 */ | |
| 1907 if (unspare) { | |
| 1908 ASSERT(cvd->vdev_isspare); | |
|
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1909 spa_spare_remove(cvd); |
| 2082 | 1910 unspare_guid = cvd->vdev_guid; |
| 1911 } | |
| 1912 | |
| 1913 /* | |
| 789 | 1914 * If the parent mirror/replacing vdev only has one child, |
| 1915 * the parent is no longer needed. Remove it from the tree. | |
| 1916 */ | |
| 1917 if (pvd->vdev_children == 1) | |
| 1918 vdev_remove_parent(cvd); | |
| 1919 | |
| 1920 /* | |
| 1921 * We don't set tvd until now because the parent we just removed | |
| 1922 * may have been the previous top-level vdev. | |
| 1923 */ | |
| 1924 tvd = cvd->vdev_top; | |
| 1925 ASSERT(tvd->vdev_parent == rvd); | |
| 1926 | |
| 1927 /* | |
|
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1928 * Reevaluate the parent vdev state. |
| 789 | 1929 */ |
|
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1930 vdev_propagate_state(cvd->vdev_parent); |
| 789 | 1931 |
| 1932 /* | |
|
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1933 * If the device we just detached was smaller than the others, it may be |
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1934 * possible to add metaslabs (i.e. grow the pool). vdev_metaslab_init() |
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1935 * can't fail because the existing metaslabs are already in core, so |
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1936 * there's nothing to read from disk. |
| 789 | 1937 */ |
| 1732 | 1938 VERIFY(vdev_metaslab_init(tvd, txg) == 0); |
| 789 | 1939 |
| 1940 vdev_config_dirty(tvd); | |
| 1941 | |
| 1942 /* | |
|
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1943 * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that |
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1944 * vd->vdev_detached is set and free vd's DTL object in syncing context. |
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1945 * But first make sure we're not on any *other* txg's DTL list, to |
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1946 * prevent vd from being accessed after it's freed. |
| 789 | 1947 */ |
| 1948 for (t = 0; t < TXG_SIZE; t++) | |
| 1949 (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); | |
| 1732 | 1950 vd->vdev_detached = B_TRUE; |
| 1951 vdev_dirty(tvd, VDD_DTL, vd, txg); | |
| 789 | 1952 |
| 2082 | 1953 error = spa_vdev_exit(spa, vd, txg, 0); |
| 1954 | |
| 1955 /* | |
|
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1956 * If this was the removal of the original device in a hot spare vdev, |
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1957 * then we want to go through and remove the device from the hot spare |
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1958 * list of every other pool. |
| 2082 | 1959 */ |
| 1960 if (unspare) { | |
| 1961 spa = NULL; | |
| 1962 mutex_enter(&spa_namespace_lock); | |
| 1963 while ((spa = spa_next(spa)) != NULL) { | |
| 1964 if (spa->spa_state != POOL_STATE_ACTIVE) | |
| 1965 continue; | |
| 1966 | |
| 1967 (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); | |
| 1968 } | |
| 1969 mutex_exit(&spa_namespace_lock); | |
| 1970 } | |
| 1971 | |
| 1972 return (error); | |
| 1973 } | |
| 1974 | |
| 1975 /* | |
| 1976 * Remove a device from the pool. Currently, this supports removing only hot | |
| 1977 * spares. | |
| 1978 */ | |
| 1979 int | |
| 1980 spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) | |
| 1981 { | |
| 1982 vdev_t *vd; | |
| 1983 nvlist_t **spares, *nv, **newspares; | |
| 1984 uint_t i, j, nspares; | |
| 1985 int ret = 0; | |
| 1986 | |
| 1987 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1988 | |
| 1989 vd = spa_lookup_by_guid(spa, guid); | |
| 1990 | |
| 1991 nv = NULL; | |
| 1992 if (spa->spa_spares != NULL && | |
| 1993 nvlist_lookup_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 1994 &spares, &nspares) == 0) { | |
| 1995 for (i = 0; i < nspares; i++) { | |
| 1996 uint64_t theguid; | |
| 1997 | |
| 1998 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 1999 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
| 2000 if (theguid == guid) { | |
| 2001 nv = spares[i]; | |
| 2002 break; | |
| 2003 } | |
| 2004 } | |
| 2005 } | |
| 2006 | |
| 2007 /* | |
| 2008 * We only support removing a hot spare, and only if it's not currently | |
| 2009 * in use in this pool. | |
| 2010 */ | |
| 2011 if (nv == NULL && vd == NULL) { | |
| 2012 ret = ENOENT; | |
| 2013 goto out; | |
| 2014 } | |
| 2015 | |
| 2016 if (nv == NULL && vd != NULL) { | |
| 2017 ret = ENOTSUP; | |
| 2018 goto out; | |
| 2019 } | |
| 2020 | |
| 2021 if (!unspare && nv != NULL && vd != NULL) { | |
| 2022 ret = EBUSY; | |
| 2023 goto out; | |
| 2024 } | |
| 2025 | |
| 2026 if (nspares == 1) { | |
| 2027 newspares = NULL; | |
| 2028 } else { | |
| 2029 newspares = kmem_alloc((nspares - 1) * sizeof (void *), | |
| 2030 KM_SLEEP); | |
| 2031 for (i = 0, j = 0; i < nspares; i++) { | |
| 2032 if (spares[i] != nv) | |
| 2033 VERIFY(nvlist_dup(spares[i], | |
| 2034 &newspares[j++], KM_SLEEP) == 0); | |
| 2035 } | |
| 2036 } | |
| 2037 | |
| 2038 VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 2039 DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 2040 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 2041 newspares, nspares - 1) == 0); | |
| 2042 for (i = 0; i < nspares - 1; i++) | |
| 2043 nvlist_free(newspares[i]); | |
| 2044 kmem_free(newspares, (nspares - 1) * sizeof (void *)); | |
| 2045 spa_load_spares(spa); | |
| 2046 spa->spa_sync_spares = B_TRUE; | |
| 2047 | |
| 2048 out: | |
| 2049 spa_config_exit(spa, FTAG); | |
| 2050 | |
| 2051 return (ret); | |
| 789 | 2052 } |
| 2053 | |
| 2054 /* | |
| 1544 | 2055 * Find any device that's done replacing, so we can detach it. |
| 789 | 2056 */ |
| 1544 | 2057 static vdev_t * |
| 2058 spa_vdev_replace_done_hunt(vdev_t *vd) | |
| 789 | 2059 { |
| 1544 | 2060 vdev_t *newvd, *oldvd; |
| 789 | 2061 int c; |
| 2062 | |
| 1544 | 2063 for (c = 0; c < vd->vdev_children; c++) { |
| 2064 oldvd = spa_vdev_replace_done_hunt(vd->vdev_child[c]); | |
| 2065 if (oldvd != NULL) | |
| 2066 return (oldvd); | |
| 2067 } | |
| 789 | 2068 |
| 2069 if (vd->vdev_ops == &vdev_replacing_ops && vd->vdev_children == 2) { | |
| 1544 | 2070 oldvd = vd->vdev_child[0]; |
| 2071 newvd = vd->vdev_child[1]; | |
| 789 | 2072 |
| 1544 | 2073 mutex_enter(&newvd->vdev_dtl_lock); |
| 2074 if (newvd->vdev_dtl_map.sm_space == 0 && | |
| 2075 newvd->vdev_dtl_scrub.sm_space == 0) { | |
| 2076 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2077 return (oldvd); | |
| 2078 } | |
| 2079 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2080 } | |
| 789 | 2081 |
| 1544 | 2082 return (NULL); |
| 789 | 2083 } |
| 2084 | |
| 1544 | 2085 static void |
| 789 | 2086 spa_vdev_replace_done(spa_t *spa) |
| 2087 { | |
| 1544 | 2088 vdev_t *vd; |
| 2082 | 2089 vdev_t *pvd; |
| 1544 | 2090 uint64_t guid; |
| 2082 | 2091 uint64_t pguid = 0; |
| 789 | 2092 |
| 1544 | 2093 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2094 |
| 1544 | 2095 while ((vd = spa_vdev_replace_done_hunt(spa->spa_root_vdev)) != NULL) { |
| 2096 guid = vd->vdev_guid; | |
| 2082 | 2097 /* |
| 2098 * If we have just finished replacing a hot spared device, then | |
| 2099 * we need to detach the parent's first child (the original hot | |
| 2100 * spare) as well. | |
| 2101 */ | |
| 2102 pvd = vd->vdev_parent; | |
| 2103 if (pvd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
| 2104 pvd->vdev_id == 0) { | |
| 2105 ASSERT(pvd->vdev_ops == &vdev_replacing_ops); | |
| 2106 ASSERT(pvd->vdev_parent->vdev_children == 2); | |
| 2107 pguid = pvd->vdev_parent->vdev_child[1]->vdev_guid; | |
| 2108 } | |
| 1544 | 2109 spa_config_exit(spa, FTAG); |
| 2110 if (spa_vdev_detach(spa, guid, B_TRUE) != 0) | |
| 2111 return; | |
| 2082 | 2112 if (pguid != 0 && spa_vdev_detach(spa, pguid, B_TRUE) != 0) |
| 2113 return; | |
| 1544 | 2114 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2115 } |
| 2116 | |
| 1544 | 2117 spa_config_exit(spa, FTAG); |
| 789 | 2118 } |
| 2119 | |
| 2120 /* | |
|
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2121 * Update the stored path for this vdev. Dirty the vdev configuration, relying |
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2122 * on spa_vdev_enter/exit() to synchronize the labels and cache. |
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2123 */ |
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2124 int |
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2125 spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) |
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2126 { |
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2127 vdev_t *rvd, *vd; |
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2128 uint64_t txg; |
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2129 |
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2130 rvd = spa->spa_root_vdev; |
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2131 |
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2132 txg = spa_vdev_enter(spa); |
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2133 |
| 2082 | 2134 if ((vd = vdev_lookup_by_guid(rvd, guid)) == NULL) { |
| 2135 /* | |
| 2136 * Determine if this is a reference to a hot spare. In that | |
| 2137 * case, update the path as stored in the spare list. | |
| 2138 */ | |
| 2139 nvlist_t **spares; | |
| 2140 uint_t i, nspares; | |
| 2141 if (spa->spa_sparelist != NULL) { | |
| 2142 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 2143 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 2144 for (i = 0; i < nspares; i++) { | |
| 2145 uint64_t theguid; | |
| 2146 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 2147 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
| 2148 if (theguid == guid) | |
| 2149 break; | |
| 2150 } | |
| 2151 | |
| 2152 if (i == nspares) | |
| 2153 return (spa_vdev_exit(spa, NULL, txg, ENOENT)); | |
| 2154 | |
| 2155 VERIFY(nvlist_add_string(spares[i], | |
| 2156 ZPOOL_CONFIG_PATH, newpath) == 0); | |
| 2157 spa_load_spares(spa); | |
| 2158 spa->spa_sync_spares = B_TRUE; | |
| 2159 return (spa_vdev_exit(spa, NULL, txg, 0)); | |
| 2160 } else { | |
| 2161 return (spa_vdev_exit(spa, NULL, txg, ENOENT)); | |
| 2162 } | |
| 2163 } | |
|
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2164 |
|
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2165 if (!vd->vdev_ops->vdev_op_leaf) |
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2166 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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2167 |
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2168 spa_strfree(vd->vdev_path); |
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2169 vd->vdev_path = spa_strdup(newpath); |
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2170 |
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2171 vdev_config_dirty(vd->vdev_top); |
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2172 |
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2173 return (spa_vdev_exit(spa, NULL, txg, 0)); |
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2174 } |
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2175 |
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2176 /* |
| 789 | 2177 * ========================================================================== |
| 2178 * SPA Scrubbing | |
| 2179 * ========================================================================== | |
| 2180 */ | |
| 2181 | |
| 1544 | 2182 void |
| 2183 spa_scrub_throttle(spa_t *spa, int direction) | |
| 2184 { | |
| 2185 mutex_enter(&spa->spa_scrub_lock); | |
| 2186 spa->spa_scrub_throttled += direction; | |
| 2187 ASSERT(spa->spa_scrub_throttled >= 0); | |
| 2188 if (spa->spa_scrub_throttled == 0) | |
| 2189 cv_broadcast(&spa->spa_scrub_io_cv); | |
| 2190 mutex_exit(&spa->spa_scrub_lock); | |
| 2191 } | |
| 789 | 2192 |
| 2193 static void | |
| 2194 spa_scrub_io_done(zio_t *zio) | |
| 2195 { | |
| 2196 spa_t *spa = zio->io_spa; | |
| 2197 | |
| 3290 | 2198 zio_data_buf_free(zio->io_data, zio->io_size); |
| 789 | 2199 |
| 2200 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2201 if (zio->io_error && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { |
|
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2202 vdev_t *vd = zio->io_vd ? zio->io_vd : spa->spa_root_vdev; |
| 789 | 2203 spa->spa_scrub_errors++; |
| 2204 mutex_enter(&vd->vdev_stat_lock); | |
| 2205 vd->vdev_stat.vs_scrub_errors++; | |
| 2206 mutex_exit(&vd->vdev_stat_lock); | |
| 2207 } | |
| 1544 | 2208 if (--spa->spa_scrub_inflight == 0) { |
| 2209 cv_broadcast(&spa->spa_scrub_io_cv); | |
| 2210 ASSERT(spa->spa_scrub_throttled == 0); | |
| 2211 } | |
| 2212 mutex_exit(&spa->spa_scrub_lock); | |
| 789 | 2213 } |
| 2214 | |
| 2215 static void | |
| 1544 | 2216 spa_scrub_io_start(spa_t *spa, blkptr_t *bp, int priority, int flags, |
| 2217 zbookmark_t *zb) | |
| 789 | 2218 { |
| 2219 size_t size = BP_GET_LSIZE(bp); | |
| 3290 | 2220 void *data = zio_data_buf_alloc(size); |
| 789 | 2221 |
| 2222 mutex_enter(&spa->spa_scrub_lock); | |
| 2223 spa->spa_scrub_inflight++; | |
| 2224 mutex_exit(&spa->spa_scrub_lock); | |
| 2225 | |
| 1544 | 2226 if (zb->zb_level == -1 && BP_GET_TYPE(bp) != DMU_OT_OBJSET) |
| 2227 flags |= ZIO_FLAG_SPECULATIVE; /* intent log block */ | |
| 2228 | |
|
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2229 flags |= ZIO_FLAG_SCRUB_THREAD | ZIO_FLAG_CANFAIL; |
| 1544 | 2230 |
| 789 | 2231 zio_nowait(zio_read(NULL, spa, bp, data, size, |
| 1544 | 2232 spa_scrub_io_done, NULL, priority, flags, zb)); |
| 789 | 2233 } |
| 2234 | |
| 2235 /* ARGSUSED */ | |
| 2236 static int | |
| 2237 spa_scrub_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) | |
| 2238 { | |
| 2239 blkptr_t *bp = &bc->bc_blkptr; | |
|
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2240 vdev_t *vd = spa->spa_root_vdev; |
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2241 dva_t *dva = bp->blk_dva; |
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2242 int needs_resilver = B_FALSE; |
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2243 int d; |
| 789 | 2244 |
|
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2245 if (bc->bc_errno) { |
| 789 | 2246 /* |
| 2247 * We can't scrub this block, but we can continue to scrub | |
| 2248 * the rest of the pool. Note the error and move along. | |
| 2249 */ | |
| 2250 mutex_enter(&spa->spa_scrub_lock); | |
| 2251 spa->spa_scrub_errors++; | |
| 2252 mutex_exit(&spa->spa_scrub_lock); | |
| 2253 | |
|
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2254 mutex_enter(&vd->vdev_stat_lock); |
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2255 vd->vdev_stat.vs_scrub_errors++; |
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2256 mutex_exit(&vd->vdev_stat_lock); |
| 789 | 2257 |
| 2258 return (ERESTART); | |
| 2259 } | |
| 2260 | |
| 2261 ASSERT(bp->blk_birth < spa->spa_scrub_maxtxg); | |
| 2262 | |
|
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2263 for (d = 0; d < BP_GET_NDVAS(bp); d++) { |
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2264 vd = vdev_lookup_top(spa, DVA_GET_VDEV(&dva[d])); |
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2265 |
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2266 ASSERT(vd != NULL); |
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2267 |
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2268 /* |
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2269 * Keep track of how much data we've examined so that |
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2270 * zpool(1M) status can make useful progress reports. |
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2271 */ |
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2272 mutex_enter(&vd->vdev_stat_lock); |
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2273 vd->vdev_stat.vs_scrub_examined += DVA_GET_ASIZE(&dva[d]); |
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2274 mutex_exit(&vd->vdev_stat_lock); |
| 789 | 2275 |
|
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2276 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER) { |
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2277 if (DVA_GET_GANG(&dva[d])) { |
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2278 /* |
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2279 * Gang members may be spread across multiple |
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2280 * vdevs, so the best we can do is look at the |
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2281 * pool-wide DTL. |
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2282 * XXX -- it would be better to change our |
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2283 * allocation policy to ensure that this can't |
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2284 * happen. |
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2285 */ |
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2286 vd = spa->spa_root_vdev; |
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2287 } |
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2288 if (vdev_dtl_contains(&vd->vdev_dtl_map, |
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2289 bp->blk_birth, 1)) |
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2290 needs_resilver = B_TRUE; |
| 789 | 2291 } |
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2292 } |
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2293 |
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2294 if (spa->spa_scrub_type == POOL_SCRUB_EVERYTHING) |
| 789 | 2295 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_SCRUB, |
| 1544 | 2296 ZIO_FLAG_SCRUB, &bc->bc_bookmark); |
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2297 else if (needs_resilver) |
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2298 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_RESILVER, |
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2299 ZIO_FLAG_RESILVER, &bc->bc_bookmark); |
| 789 | 2300 |
| 2301 return (0); | |
| 2302 } | |
| 2303 | |
| 2304 static void | |
| 2305 spa_scrub_thread(spa_t *spa) | |
| 2306 { | |
| 2307 callb_cpr_t cprinfo; | |
| 2308 traverse_handle_t *th = spa->spa_scrub_th; | |
| 2309 vdev_t *rvd = spa->spa_root_vdev; | |
| 2310 pool_scrub_type_t scrub_type = spa->spa_scrub_type; | |
| 2311 int error = 0; | |
| 2312 boolean_t complete; | |
| 2313 | |
| 2314 CALLB_CPR_INIT(&cprinfo, &spa->spa_scrub_lock, callb_generic_cpr, FTAG); | |
| 2315 | |
|
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2316 /* |
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2317 * If we're restarting due to a snapshot create/delete, |
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2318 * wait for that to complete. |
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2319 */ |
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2320 txg_wait_synced(spa_get_dsl(spa), 0); |
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2321 |
| 1544 | 2322 dprintf("start %s mintxg=%llu maxtxg=%llu\n", |
| 2323 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
| 2324 spa->spa_scrub_mintxg, spa->spa_scrub_maxtxg); | |
| 2325 | |
| 2326 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 2327 vdev_reopen(rvd); /* purge all vdev caches */ | |
| 789 | 2328 vdev_config_dirty(rvd); /* rewrite all disk labels */ |
| 2329 vdev_scrub_stat_update(rvd, scrub_type, B_FALSE); | |
| 1544 | 2330 spa_config_exit(spa, FTAG); |
| 789 | 2331 |
| 2332 mutex_enter(&spa->spa_scrub_lock); | |
| 2333 spa->spa_scrub_errors = 0; | |
| 2334 spa->spa_scrub_active = 1; | |
| 1544 | 2335 ASSERT(spa->spa_scrub_inflight == 0); |
| 2336 ASSERT(spa->spa_scrub_throttled == 0); | |
| 789 | 2337 |
| 2338 while (!spa->spa_scrub_stop) { | |
| 2339 CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
| 1544 | 2340 while (spa->spa_scrub_suspended) { |
| 789 | 2341 spa->spa_scrub_active = 0; |
| 2342 cv_broadcast(&spa->spa_scrub_cv); | |
| 2343 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2344 spa->spa_scrub_active = 1; | |
| 2345 } | |
| 2346 CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_scrub_lock); | |
| 2347 | |
| 2348 if (spa->spa_scrub_restart_txg != 0) | |
| 2349 break; | |
| 2350 | |
| 2351 mutex_exit(&spa->spa_scrub_lock); | |
| 2352 error = traverse_more(th); | |
| 2353 mutex_enter(&spa->spa_scrub_lock); | |
| 2354 if (error != EAGAIN) | |
| 2355 break; | |
| 1544 | 2356 |
| 2357 while (spa->spa_scrub_throttled > 0) | |
| 2358 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 789 | 2359 } |
| 2360 | |
| 2361 while (spa->spa_scrub_inflight) | |
| 2362 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 2363 | |
|
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2364 spa->spa_scrub_active = 0; |
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2365 cv_broadcast(&spa->spa_scrub_cv); |
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2366 |
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2367 mutex_exit(&spa->spa_scrub_lock); |
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2368 |
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2369 spa_config_enter(spa, RW_WRITER, FTAG); |
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2370 |
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2371 mutex_enter(&spa->spa_scrub_lock); |
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2372 |
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2373 /* |
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2374 * Note: we check spa_scrub_restart_txg under both spa_scrub_lock |
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2375 * AND the spa config lock to synchronize with any config changes |
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2376 * that revise the DTLs under spa_vdev_enter() / spa_vdev_exit(). |
|
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2377 */ |
| 789 | 2378 if (spa->spa_scrub_restart_txg != 0) |
| 2379 error = ERESTART; | |
| 2380 | |
| 1544 | 2381 if (spa->spa_scrub_stop) |
| 2382 error = EINTR; | |
| 2383 | |
| 789 | 2384 /* |
| 1544 | 2385 * Even if there were uncorrectable errors, we consider the scrub |
| 2386 * completed. The downside is that if there is a transient error during | |
| 2387 * a resilver, we won't resilver the data properly to the target. But | |
| 2388 * if the damage is permanent (more likely) we will resilver forever, | |
| 2389 * which isn't really acceptable. Since there is enough information for | |
| 2390 * the user to know what has failed and why, this seems like a more | |
| 2391 * tractable approach. | |
| 789 | 2392 */ |
| 1544 | 2393 complete = (error == 0); |
| 789 | 2394 |
| 1544 | 2395 dprintf("end %s to maxtxg=%llu %s, traverse=%d, %llu errors, stop=%u\n", |
| 2396 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
| 789 | 2397 spa->spa_scrub_maxtxg, complete ? "done" : "FAILED", |
| 2398 error, spa->spa_scrub_errors, spa->spa_scrub_stop); | |
| 2399 | |
| 2400 mutex_exit(&spa->spa_scrub_lock); | |
| 2401 | |
| 2402 /* | |
| 2403 * If the scrub/resilver completed, update all DTLs to reflect this. | |
| 2404 * Whether it succeeded or not, vacate all temporary scrub DTLs. | |
| 2405 */ | |
| 2406 vdev_dtl_reassess(rvd, spa_last_synced_txg(spa) + 1, | |
| 2407 complete ? spa->spa_scrub_maxtxg : 0, B_TRUE); | |
| 2408 vdev_scrub_stat_update(rvd, POOL_SCRUB_NONE, complete); | |
| 1544 | 2409 spa_errlog_rotate(spa); |
|
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2410 |
| 1544 | 2411 spa_config_exit(spa, FTAG); |
| 789 | 2412 |
| 2413 mutex_enter(&spa->spa_scrub_lock); | |
| 2414 | |
| 1544 | 2415 /* |
| 2416 * We may have finished replacing a device. | |
| 2417 * Let the async thread assess this and handle the detach. | |
| 2418 */ | |
| 2419 spa_async_request(spa, SPA_ASYNC_REPLACE_DONE); | |
| 789 | 2420 |
| 2421 /* | |
| 2422 * If we were told to restart, our final act is to start a new scrub. | |
| 2423 */ | |
| 2424 if (error == ERESTART) | |
| 1544 | 2425 spa_async_request(spa, scrub_type == POOL_SCRUB_RESILVER ? |
| 2426 SPA_ASYNC_RESILVER : SPA_ASYNC_SCRUB); | |
| 789 | 2427 |
| 1544 | 2428 spa->spa_scrub_type = POOL_SCRUB_NONE; |
| 2429 spa->spa_scrub_active = 0; | |
| 2430 spa->spa_scrub_thread = NULL; | |
| 2431 cv_broadcast(&spa->spa_scrub_cv); | |
| 789 | 2432 CALLB_CPR_EXIT(&cprinfo); /* drops &spa->spa_scrub_lock */ |
| 2433 thread_exit(); | |
| 2434 } | |
| 2435 | |
| 2436 void | |
| 2437 spa_scrub_suspend(spa_t *spa) | |
| 2438 { | |
| 2439 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2440 spa->spa_scrub_suspended++; |
| 789 | 2441 while (spa->spa_scrub_active) { |
| 2442 cv_broadcast(&spa->spa_scrub_cv); | |
| 2443 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2444 } | |
| 2445 while (spa->spa_scrub_inflight) | |
| 2446 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 2447 mutex_exit(&spa->spa_scrub_lock); | |
| 2448 } | |
| 2449 | |
| 2450 void | |
| 2451 spa_scrub_resume(spa_t *spa) | |
| 2452 { | |
| 2453 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2454 ASSERT(spa->spa_scrub_suspended != 0); |
| 2455 if (--spa->spa_scrub_suspended == 0) | |
| 789 | 2456 cv_broadcast(&spa->spa_scrub_cv); |
| 2457 mutex_exit(&spa->spa_scrub_lock); | |
| 2458 } | |
| 2459 | |
| 2460 void | |
| 2461 spa_scrub_restart(spa_t *spa, uint64_t txg) | |
| 2462 { | |
| 2463 /* | |
| 2464 * Something happened (e.g. snapshot create/delete) that means | |
| 2465 * we must restart any in-progress scrubs. The itinerary will | |
| 2466 * fix this properly. | |
| 2467 */ | |
| 2468 mutex_enter(&spa->spa_scrub_lock); | |
| 2469 spa->spa_scrub_restart_txg = txg; | |
| 2470 mutex_exit(&spa->spa_scrub_lock); | |
| 2471 } | |
| 2472 | |
| 1544 | 2473 int |
| 2474 spa_scrub(spa_t *spa, pool_scrub_type_t type, boolean_t force) | |
| 789 | 2475 { |
| 2476 space_seg_t *ss; | |
| 2477 uint64_t mintxg, maxtxg; | |
| 2478 vdev_t *rvd = spa->spa_root_vdev; | |
| 2479 | |
| 2480 if ((uint_t)type >= POOL_SCRUB_TYPES) | |
| 2481 return (ENOTSUP); | |
| 2482 | |
| 1544 | 2483 mutex_enter(&spa->spa_scrub_lock); |
| 2484 | |
| 789 | 2485 /* |
| 2486 * If there's a scrub or resilver already in progress, stop it. | |
| 2487 */ | |
| 2488 while (spa->spa_scrub_thread != NULL) { | |
| 2489 /* | |
| 2490 * Don't stop a resilver unless forced. | |
| 2491 */ | |
| 1544 | 2492 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER && !force) { |
| 2493 mutex_exit(&spa->spa_scrub_lock); | |
| 789 | 2494 return (EBUSY); |
| 1544 | 2495 } |
| 789 | 2496 spa->spa_scrub_stop = 1; |
| 2497 cv_broadcast(&spa->spa_scrub_cv); | |
| 2498 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2499 } | |
| 2500 | |
| 2501 /* | |
| 2502 * Terminate the previous traverse. | |
| 2503 */ | |
| 2504 if (spa->spa_scrub_th != NULL) { | |
| 2505 traverse_fini(spa->spa_scrub_th); | |
| 2506 spa->spa_scrub_th = NULL; | |
| 2507 } | |
| 2508 | |
| 1544 | 2509 if (rvd == NULL) { |
| 2510 ASSERT(spa->spa_scrub_stop == 0); | |
| 2511 ASSERT(spa->spa_scrub_type == type); | |
| 2512 ASSERT(spa->spa_scrub_restart_txg == 0); | |
| 2513 mutex_exit(&spa->spa_scrub_lock); | |
| 2514 return (0); | |
| 2515 } | |
| 789 | 2516 |
| 2517 mintxg = TXG_INITIAL - 1; | |
| 2518 maxtxg = spa_last_synced_txg(spa) + 1; | |
| 2519 | |
| 1544 | 2520 mutex_enter(&rvd->vdev_dtl_lock); |
| 789 | 2521 |
| 1544 | 2522 if (rvd->vdev_dtl_map.sm_space == 0) { |
| 2523 /* | |
| 2524 * The pool-wide DTL is empty. | |
| 1732 | 2525 * If this is a resilver, there's nothing to do except |
| 2526 * check whether any in-progress replacements have completed. | |
| 1544 | 2527 */ |
| 1732 | 2528 if (type == POOL_SCRUB_RESILVER) { |
| 1544 | 2529 type = POOL_SCRUB_NONE; |
| 1732 | 2530 spa_async_request(spa, SPA_ASYNC_REPLACE_DONE); |
| 2531 } | |
| 1544 | 2532 } else { |
| 2533 /* | |
| 2534 * The pool-wide DTL is non-empty. | |
| 2535 * If this is a normal scrub, upgrade to a resilver instead. | |
| 2536 */ | |
| 2537 if (type == POOL_SCRUB_EVERYTHING) | |
| 2538 type = POOL_SCRUB_RESILVER; | |
| 2539 } | |
| 789 | 2540 |
| 1544 | 2541 if (type == POOL_SCRUB_RESILVER) { |
| 789 | 2542 /* |
| 2543 * Determine the resilvering boundaries. | |
| 2544 * | |
| 2545 * Note: (mintxg, maxtxg) is an open interval, | |
| 2546 * i.e. mintxg and maxtxg themselves are not included. | |
| 2547 * | |
| 2548 * Note: for maxtxg, we MIN with spa_last_synced_txg(spa) + 1 | |
| 2549 * so we don't claim to resilver a txg that's still changing. | |
| 2550 */ | |
| 2551 ss = avl_first(&rvd->vdev_dtl_map.sm_root); | |
| 1544 | 2552 mintxg = ss->ss_start - 1; |
| 789 | 2553 ss = avl_last(&rvd->vdev_dtl_map.sm_root); |
| 1544 | 2554 maxtxg = MIN(ss->ss_end, maxtxg); |
| 789 | 2555 } |
| 2556 | |
| 1544 | 2557 mutex_exit(&rvd->vdev_dtl_lock); |
| 2558 | |
| 2559 spa->spa_scrub_stop = 0; | |
| 2560 spa->spa_scrub_type = type; | |
| 2561 spa->spa_scrub_restart_txg = 0; | |
| 2562 | |
| 2563 if (type != POOL_SCRUB_NONE) { | |
| 2564 spa->spa_scrub_mintxg = mintxg; | |
| 789 | 2565 spa->spa_scrub_maxtxg = maxtxg; |
| 2566 spa->spa_scrub_th = traverse_init(spa, spa_scrub_cb, NULL, | |
|
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2567 ADVANCE_PRE | ADVANCE_PRUNE | ADVANCE_ZIL, |
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2568 ZIO_FLAG_CANFAIL); |
| 789 | 2569 traverse_add_pool(spa->spa_scrub_th, mintxg, maxtxg); |
| 2570 spa->spa_scrub_thread = thread_create(NULL, 0, | |
| 2571 spa_scrub_thread, spa, 0, &p0, TS_RUN, minclsyspri); | |
| 2572 } | |
| 2573 | |
| 1544 | 2574 mutex_exit(&spa->spa_scrub_lock); |
| 2575 | |
| 789 | 2576 return (0); |
| 2577 } | |
| 2578 | |
| 1544 | 2579 /* |
| 2580 * ========================================================================== | |
| 2581 * SPA async task processing | |
| 2582 * ========================================================================== | |
| 2583 */ | |
| 2584 | |
| 2585 static void | |
| 2586 spa_async_reopen(spa_t *spa) | |
| 789 | 2587 { |
| 1544 | 2588 vdev_t *rvd = spa->spa_root_vdev; |
| 2589 vdev_t *tvd; | |
| 2590 int c; | |
| 2591 | |
| 2592 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 2593 | |
| 2594 for (c = 0; c < rvd->vdev_children; c++) { | |
| 2595 tvd = rvd->vdev_child[c]; | |
| 2596 if (tvd->vdev_reopen_wanted) { | |
| 2597 tvd->vdev_reopen_wanted = 0; | |
| 2598 vdev_reopen(tvd); | |
| 2599 } | |
| 2600 } | |
| 789 | 2601 |
| 1544 | 2602 spa_config_exit(spa, FTAG); |
| 2603 } | |
| 2604 | |
| 2605 static void | |
| 2606 spa_async_thread(spa_t *spa) | |
| 2607 { | |
| 2608 int tasks; | |
| 2609 | |
| 2610 ASSERT(spa->spa_sync_on); | |
| 789 | 2611 |
| 1544 | 2612 mutex_enter(&spa->spa_async_lock); |
| 2613 tasks = spa->spa_async_tasks; | |
| 2614 spa->spa_async_tasks = 0; | |
| 2615 mutex_exit(&spa->spa_async_lock); | |
| 2616 | |
| 2617 /* | |
|
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2618 * See if the config needs to be updated. |
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2619 */ |
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2620 if (tasks & SPA_ASYNC_CONFIG_UPDATE) { |
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2621 mutex_enter(&spa_namespace_lock); |
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2622 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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2623 mutex_exit(&spa_namespace_lock); |
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2624 } |
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2625 |
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2626 /* |
| 1544 | 2627 * See if any devices need to be reopened. |
| 2628 */ | |
| 2629 if (tasks & SPA_ASYNC_REOPEN) | |
| 2630 spa_async_reopen(spa); | |
| 2631 | |
| 2632 /* | |
| 2633 * If any devices are done replacing, detach them. | |
| 2634 */ | |
| 2635 if (tasks & SPA_ASYNC_REPLACE_DONE) | |
| 789 | 2636 spa_vdev_replace_done(spa); |
| 2637 | |
| 1544 | 2638 /* |
| 2639 * Kick off a scrub. | |
| 2640 */ | |
| 2641 if (tasks & SPA_ASYNC_SCRUB) | |
| 2642 VERIFY(spa_scrub(spa, POOL_SCRUB_EVERYTHING, B_TRUE) == 0); | |
| 2643 | |
| 2644 /* | |
| 2645 * Kick off a resilver. | |
| 2646 */ | |
| 2647 if (tasks & SPA_ASYNC_RESILVER) | |
| 2648 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 2649 | |
| 2650 /* | |
| 2651 * Let the world know that we're done. | |
| 2652 */ | |
| 2653 mutex_enter(&spa->spa_async_lock); | |
| 2654 spa->spa_async_thread = NULL; | |
| 2655 cv_broadcast(&spa->spa_async_cv); | |
| 2656 mutex_exit(&spa->spa_async_lock); | |
| 2657 thread_exit(); | |
| 2658 } | |
| 2659 | |
| 2660 void | |
| 2661 spa_async_suspend(spa_t *spa) | |
| 2662 { | |
| 2663 mutex_enter(&spa->spa_async_lock); | |
| 2664 spa->spa_async_suspended++; | |
| 2665 while (spa->spa_async_thread != NULL) | |
| 2666 cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); | |
| 2667 mutex_exit(&spa->spa_async_lock); | |
| 2668 } | |
| 2669 | |
| 2670 void | |
| 2671 spa_async_resume(spa_t *spa) | |
| 2672 { | |
| 2673 mutex_enter(&spa->spa_async_lock); | |
| 2674 ASSERT(spa->spa_async_suspended != 0); | |
| 2675 spa->spa_async_suspended--; | |
| 2676 mutex_exit(&spa->spa_async_lock); | |
| 2677 } | |
| 2678 | |
| 2679 static void | |
| 2680 spa_async_dispatch(spa_t *spa) | |
| 2681 { | |
| 2682 mutex_enter(&spa->spa_async_lock); | |
| 2683 if (spa->spa_async_tasks && !spa->spa_async_suspended && | |
|
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2684 spa->spa_async_thread == NULL && |
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2685 rootdir != NULL && !vn_is_readonly(rootdir)) |
| 1544 | 2686 spa->spa_async_thread = thread_create(NULL, 0, |
| 2687 spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
| 2688 mutex_exit(&spa->spa_async_lock); | |
| 2689 } | |
| 2690 | |
| 2691 void | |
| 2692 spa_async_request(spa_t *spa, int task) | |
| 2693 { | |
| 2694 mutex_enter(&spa->spa_async_lock); | |
| 2695 spa->spa_async_tasks |= task; | |
| 2696 mutex_exit(&spa->spa_async_lock); | |
| 789 | 2697 } |
| 2698 | |
| 2699 /* | |
| 2700 * ========================================================================== | |
| 2701 * SPA syncing routines | |
| 2702 * ========================================================================== | |
| 2703 */ | |
| 2704 | |
| 2705 static void | |
| 2706 spa_sync_deferred_frees(spa_t *spa, uint64_t txg) | |
| 2707 { | |
| 2708 bplist_t *bpl = &spa->spa_sync_bplist; | |
| 2709 dmu_tx_t *tx; | |
| 2710 blkptr_t blk; | |
| 2711 uint64_t itor = 0; | |
| 2712 zio_t *zio; | |
| 2713 int error; | |
| 2714 uint8_t c = 1; | |
| 2715 | |
| 2716 zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CONFIG_HELD); | |
| 2717 | |
| 2718 while (bplist_iterate(bpl, &itor, &blk) == 0) | |
| 2719 zio_nowait(zio_free(zio, spa, txg, &blk, NULL, NULL)); | |
| 2720 | |
| 2721 error = zio_wait(zio); | |
| 2722 ASSERT3U(error, ==, 0); | |
| 2723 | |
| 2724 tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); | |
| 2725 bplist_vacate(bpl, tx); | |
| 2726 | |
| 2727 /* | |
| 2728 * Pre-dirty the first block so we sync to convergence faster. | |
| 2729 * (Usually only the first block is needed.) | |
| 2730 */ | |
| 2731 dmu_write(spa->spa_meta_objset, spa->spa_sync_bplist_obj, 0, 1, &c, tx); | |
| 2732 dmu_tx_commit(tx); | |
| 2733 } | |
| 2734 | |
| 2735 static void | |
| 2082 | 2736 spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) |
| 2737 { | |
| 2738 char *packed = NULL; | |
| 2739 size_t nvsize = 0; | |
| 2740 dmu_buf_t *db; | |
| 2741 | |
| 2742 VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
| 2743 | |
| 2744 packed = kmem_alloc(nvsize, KM_SLEEP); | |
| 2745 | |
| 2746 VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
| 2747 KM_SLEEP) == 0); | |
| 2748 | |
| 2749 dmu_write(spa->spa_meta_objset, obj, 0, nvsize, packed, tx); | |
| 2750 | |
| 2751 kmem_free(packed, nvsize); | |
| 2752 | |
| 2753 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
| 2754 dmu_buf_will_dirty(db, tx); | |
| 2755 *(uint64_t *)db->db_data = nvsize; | |
| 2756 dmu_buf_rele(db, FTAG); | |
| 2757 } | |
| 2758 | |
| 2759 static void | |
| 2760 spa_sync_spares(spa_t *spa, dmu_tx_t *tx) | |
| 2761 { | |
| 2762 nvlist_t *nvroot; | |
| 2763 nvlist_t **spares; | |
| 2764 int i; | |
| 2765 | |
| 2766 if (!spa->spa_sync_spares) | |
| 2767 return; | |
| 2768 | |
| 2769 /* | |
| 2770 * Update the MOS nvlist describing the list of available spares. | |
| 2771 * spa_validate_spares() will have already made sure this nvlist is | |
| 2772 * valid and the vdevs are labelled appropriately. | |
| 2773 */ | |
| 2774 if (spa->spa_spares_object == 0) { | |
| 2775 spa->spa_spares_object = dmu_object_alloc(spa->spa_meta_objset, | |
| 2776 DMU_OT_PACKED_NVLIST, 1 << 14, | |
| 2777 DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); | |
| 2778 VERIFY(zap_update(spa->spa_meta_objset, | |
| 2779 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SPARES, | |
| 2780 sizeof (uint64_t), 1, &spa->spa_spares_object, tx) == 0); | |
| 2781 } | |
| 2782 | |
| 2783 VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 2784 if (spa->spa_nspares == 0) { | |
| 2785 VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 2786 NULL, 0) == 0); | |
| 2787 } else { | |
| 2788 spares = kmem_alloc(spa->spa_nspares * sizeof (void *), | |
| 2789 KM_SLEEP); | |
| 2790 for (i = 0; i < spa->spa_nspares; i++) | |
| 2791 spares[i] = vdev_config_generate(spa, | |
| 2792 spa->spa_spares[i], B_FALSE, B_TRUE); | |
| 2793 VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 2794 spares, spa->spa_nspares) == 0); | |
| 2795 for (i = 0; i < spa->spa_nspares; i++) | |
| 2796 nvlist_free(spares[i]); | |
| 2797 kmem_free(spares, spa->spa_nspares * sizeof (void *)); | |
| 2798 } | |
| 2799 | |
| 2800 spa_sync_nvlist(spa, spa->spa_spares_object, nvroot, tx); | |
| 2926 | 2801 nvlist_free(nvroot); |
| 2082 | 2802 |
| 2803 spa->spa_sync_spares = B_FALSE; | |
| 2804 } | |
| 2805 | |
| 2806 static void | |
| 789 | 2807 spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) |
| 2808 { | |
| 2809 nvlist_t *config; | |
| 2810 | |
| 2811 if (list_is_empty(&spa->spa_dirty_list)) | |
| 2812 return; | |
| 2813 | |
| 2814 config = spa_config_generate(spa, NULL, dmu_tx_get_txg(tx), B_FALSE); | |
| 2815 | |
|
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2816 if (spa->spa_config_syncing) |
|
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2817 nvlist_free(spa->spa_config_syncing); |
|
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2818 spa->spa_config_syncing = config; |
| 789 | 2819 |
| 2082 | 2820 spa_sync_nvlist(spa, spa->spa_config_object, config, tx); |
| 789 | 2821 } |
| 2822 | |
| 2823 /* | |
| 2824 * Sync the specified transaction group. New blocks may be dirtied as | |
| 2825 * part of the process, so we iterate until it converges. | |
| 2826 */ | |
| 2827 void | |
| 2828 spa_sync(spa_t *spa, uint64_t txg) | |
| 2829 { | |
| 2830 dsl_pool_t *dp = spa->spa_dsl_pool; | |
| 2831 objset_t *mos = spa->spa_meta_objset; | |
| 2832 bplist_t *bpl = &spa->spa_sync_bplist; | |
|
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|
2833 vdev_t *rvd = spa->spa_root_vdev; |
| 789 | 2834 vdev_t *vd; |
| 2835 dmu_tx_t *tx; | |
| 2836 int dirty_vdevs; | |
| 2837 | |
| 2838 /* | |
| 2839 * Lock out configuration changes. | |
| 2840 */ | |
| 1544 | 2841 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2842 |
| 2843 spa->spa_syncing_txg = txg; | |
| 2844 spa->spa_sync_pass = 0; | |
| 2845 | |
| 1544 | 2846 VERIFY(0 == bplist_open(bpl, mos, spa->spa_sync_bplist_obj)); |
| 789 | 2847 |
| 2082 | 2848 tx = dmu_tx_create_assigned(dp, txg); |
| 2849 | |
| 2850 /* | |
| 2851 * If we are upgrading to ZFS_VERSION_RAIDZ_DEFLATE this txg, | |
| 2852 * set spa_deflate if we have no raid-z vdevs. | |
| 2853 */ | |
| 2854 if (spa->spa_ubsync.ub_version < ZFS_VERSION_RAIDZ_DEFLATE && | |
| 2855 spa->spa_uberblock.ub_version >= ZFS_VERSION_RAIDZ_DEFLATE) { | |
| 2856 int i; | |
| 2857 | |
| 2858 for (i = 0; i < rvd->vdev_children; i++) { | |
| 2859 vd = rvd->vdev_child[i]; | |
| 2860 if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
| 2861 break; | |
| 2862 } | |
| 2863 if (i == rvd->vdev_children) { | |
| 2864 spa->spa_deflate = TRUE; | |
| 2865 VERIFY(0 == zap_add(spa->spa_meta_objset, | |
| 2866 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 2867 sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
| 2868 } | |
| 2869 } | |
| 2870 | |
| 789 | 2871 /* |
| 2872 * If anything has changed in this txg, push the deferred frees | |
| 2873 * from the previous txg. If not, leave them alone so that we | |
| 2874 * don't generate work on an otherwise idle system. | |
| 2875 */ | |
| 2876 if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || | |
|
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2877 !txg_list_empty(&dp->dp_dirty_dirs, txg) || |
|
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2878 !txg_list_empty(&dp->dp_sync_tasks, txg)) |
| 789 | 2879 spa_sync_deferred_frees(spa, txg); |
| 2880 | |
| 2881 /* | |
| 2882 * Iterate to convergence. | |
| 2883 */ | |
| 2884 do { | |
| 2885 spa->spa_sync_pass++; | |
| 2886 | |
| 2887 spa_sync_config_object(spa, tx); | |
| 2082 | 2888 spa_sync_spares(spa, tx); |
| 1544 | 2889 spa_errlog_sync(spa, txg); |
| 789 | 2890 dsl_pool_sync(dp, txg); |
| 2891 | |
| 2892 dirty_vdevs = 0; | |
| 2893 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) { | |
| 2894 vdev_sync(vd, txg); | |
| 2895 dirty_vdevs++; | |
| 2896 } | |
| 2897 | |
| 2898 bplist_sync(bpl, tx); | |
| 2899 } while (dirty_vdevs); | |
| 2900 | |
| 2901 bplist_close(bpl); | |
| 2902 | |
| 2903 dprintf("txg %llu passes %d\n", txg, spa->spa_sync_pass); | |
| 2904 | |
| 2905 /* | |
| 2906 * Rewrite the vdev configuration (which includes the uberblock) | |
| 2907 * to commit the transaction group. | |
|
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2908 * |
|
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2909 * If there are any dirty vdevs, sync the uberblock to all vdevs. |
|
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2910 * Otherwise, pick a random top-level vdev that's known to be |
|
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2911 * visible in the config cache (see spa_vdev_add() for details). |
|
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2912 * If the write fails, try the next vdev until we're tried them all. |
| 789 | 2913 */ |
|
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2914 if (!list_is_empty(&spa->spa_dirty_list)) { |
|
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2915 VERIFY(vdev_config_sync(rvd, txg) == 0); |
|
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2916 } else { |
|
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2917 int children = rvd->vdev_children; |
|
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2918 int c0 = spa_get_random(children); |
|
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2919 int c; |
|
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|
2920 |
|
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2921 for (c = 0; c < children; c++) { |
|
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2922 vd = rvd->vdev_child[(c0 + c) % children]; |
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2923 if (vd->vdev_ms_array == 0) |
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2924 continue; |
|
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2925 if (vdev_config_sync(vd, txg) == 0) |
|
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2926 break; |
|
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|
2927 } |
|
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2928 if (c == children) |
|
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2929 VERIFY(vdev_config_sync(rvd, txg) == 0); |
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2930 } |
|
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|
2931 |
| 2082 | 2932 dmu_tx_commit(tx); |
| 2933 | |
|
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2934 /* |
|
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2935 * Clear the dirty config list. |
|
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2936 */ |
|
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2937 while ((vd = list_head(&spa->spa_dirty_list)) != NULL) |
|
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2938 vdev_config_clean(vd); |
|
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2939 |
|
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2940 /* |
|
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2941 * Now that the new config has synced transactionally, |
|
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2942 * let it become visible to the config cache. |
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2943 */ |
|
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2944 if (spa->spa_config_syncing != NULL) { |
|
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2945 spa_config_set(spa, spa->spa_config_syncing); |
|
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2946 spa->spa_config_txg = txg; |
|
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2947 spa->spa_config_syncing = NULL; |
|
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2948 } |
| 789 | 2949 |
| 2950 /* | |
| 2951 * Make a stable copy of the fully synced uberblock. | |
| 2952 * We use this as the root for pool traversals. | |
| 2953 */ | |
| 2954 spa->spa_traverse_wanted = 1; /* tells traverse_more() to stop */ | |
| 2955 | |
| 2956 spa_scrub_suspend(spa); /* stop scrubbing and finish I/Os */ | |
| 2957 | |
| 2958 rw_enter(&spa->spa_traverse_lock, RW_WRITER); | |
| 2959 spa->spa_traverse_wanted = 0; | |
| 2960 spa->spa_ubsync = spa->spa_uberblock; | |
| 2961 rw_exit(&spa->spa_traverse_lock); | |
| 2962 | |
| 2963 spa_scrub_resume(spa); /* resume scrub with new ubsync */ | |
| 2964 | |
| 2965 /* | |
| 2966 * Clean up the ZIL records for the synced txg. | |
| 2967 */ | |
| 2968 dsl_pool_zil_clean(dp); | |
| 2969 | |
| 2970 /* | |
| 2971 * Update usable space statistics. | |
| 2972 */ | |
| 2973 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg))) | |
| 2974 vdev_sync_done(vd, txg); | |
| 2975 | |
| 2976 /* | |
| 2977 * It had better be the case that we didn't dirty anything | |
| 2082 | 2978 * since vdev_config_sync(). |
| 789 | 2979 */ |
| 2980 ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
| 2981 ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
| 2982 ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
| 2983 ASSERT(bpl->bpl_queue == NULL); | |
| 2984 | |
| 1544 | 2985 spa_config_exit(spa, FTAG); |
| 2986 | |
| 2987 /* | |
| 2988 * If any async tasks have been requested, kick them off. | |
| 2989 */ | |
| 2990 spa_async_dispatch(spa); | |
| 789 | 2991 } |
| 2992 | |
| 2993 /* | |
| 2994 * Sync all pools. We don't want to hold the namespace lock across these | |
| 2995 * operations, so we take a reference on the spa_t and drop the lock during the | |
| 2996 * sync. | |
| 2997 */ | |
| 2998 void | |
| 2999 spa_sync_allpools(void) | |
| 3000 { | |
| 3001 spa_t *spa = NULL; | |
| 3002 mutex_enter(&spa_namespace_lock); | |
| 3003 while ((spa = spa_next(spa)) != NULL) { | |
| 3004 if (spa_state(spa) != POOL_STATE_ACTIVE) | |
| 3005 continue; | |
| 3006 spa_open_ref(spa, FTAG); | |
| 3007 mutex_exit(&spa_namespace_lock); | |
| 3008 txg_wait_synced(spa_get_dsl(spa), 0); | |
| 3009 mutex_enter(&spa_namespace_lock); | |
| 3010 spa_close(spa, FTAG); | |
| 3011 } | |
| 3012 mutex_exit(&spa_namespace_lock); | |
| 3013 } | |
| 3014 | |
| 3015 /* | |
| 3016 * ========================================================================== | |
| 3017 * Miscellaneous routines | |
| 3018 * ========================================================================== | |
| 3019 */ | |
| 3020 | |
| 3021 /* | |
| 3022 * Remove all pools in the system. | |
| 3023 */ | |
| 3024 void | |
| 3025 spa_evict_all(void) | |
| 3026 { | |
| 3027 spa_t *spa; | |
| 3028 | |
| 3029 /* | |
| 3030 * Remove all cached state. All pools should be closed now, | |
| 3031 * so every spa in the AVL tree should be unreferenced. | |
| 3032 */ | |
| 3033 mutex_enter(&spa_namespace_lock); | |
| 3034 while ((spa = spa_next(NULL)) != NULL) { | |
| 3035 /* | |
| 1544 | 3036 * Stop async tasks. The async thread may need to detach |
| 3037 * a device that's been replaced, which requires grabbing | |
| 3038 * spa_namespace_lock, so we must drop it here. | |
| 789 | 3039 */ |
| 3040 spa_open_ref(spa, FTAG); | |
| 3041 mutex_exit(&spa_namespace_lock); | |
| 1544 | 3042 spa_async_suspend(spa); |
| 789 | 3043 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); |
| 3044 mutex_enter(&spa_namespace_lock); | |
| 3045 spa_close(spa, FTAG); | |
| 3046 | |
| 3047 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
| 3048 spa_unload(spa); | |
| 3049 spa_deactivate(spa); | |
| 3050 } | |
| 3051 spa_remove(spa); | |
| 3052 } | |
| 3053 mutex_exit(&spa_namespace_lock); | |
| 3054 } | |
| 1544 | 3055 |
| 3056 vdev_t * | |
| 3057 spa_lookup_by_guid(spa_t *spa, uint64_t guid) | |
| 3058 { | |
| 3059 return (vdev_lookup_by_guid(spa->spa_root_vdev, guid)); | |
| 3060 } | |
| 1760 | 3061 |
| 3062 void | |
| 3063 spa_upgrade(spa_t *spa) | |
| 3064 { | |
| 3065 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 3066 | |
| 3067 /* | |
| 3068 * This should only be called for a non-faulted pool, and since a | |
| 3069 * future version would result in an unopenable pool, this shouldn't be | |
| 3070 * possible. | |
| 3071 */ | |
| 3072 ASSERT(spa->spa_uberblock.ub_version <= ZFS_VERSION); | |
| 3073 | |
| 3074 spa->spa_uberblock.ub_version = ZFS_VERSION; | |
| 3075 vdev_config_dirty(spa->spa_root_vdev); | |
| 3076 | |
| 3077 spa_config_exit(spa, FTAG); | |
| 2082 | 3078 |
| 3079 txg_wait_synced(spa_get_dsl(spa), 0); | |
| 1760 | 3080 } |
| 2082 | 3081 |
| 3082 boolean_t | |
| 3083 spa_has_spare(spa_t *spa, uint64_t guid) | |
| 3084 { | |
| 3085 int i; | |
|
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|
3086 uint64_t spareguid; |
| 2082 | 3087 |
| 3088 for (i = 0; i < spa->spa_nspares; i++) | |
| 3089 if (spa->spa_spares[i]->vdev_guid == guid) | |
| 3090 return (B_TRUE); | |
| 3091 | |
|
3377
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
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diff
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|
3092 for (i = 0; i < spa->spa_pending_nspares; i++) { |
|
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
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diff
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|
3093 if (nvlist_lookup_uint64(spa->spa_pending_spares[i], |
|
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
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diff
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|
3094 ZPOOL_CONFIG_GUID, &spareguid) == 0 && |
|
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
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diff
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|
3095 spareguid == guid) |
|
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
eschrock
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|
3096 return (B_TRUE); |
|
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
eschrock
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diff
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|
3097 } |
|
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|
3098 |
| 2082 | 3099 return (B_FALSE); |
| 3100 } |