Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/fs/zfs/spa.c @ 4527:5d5b6ba91b17
PSARC 2007/171 ZFS Separate Intent Log
6339640 Make ZIL use NVRAM when available.
| author | perrin |
|---|---|
| date | Fri, 22 Jun 2007 20:02:13 -0700 |
| parents | 24fbf2d7a5d7 |
| children | 12bb2876a62e |
| rev | line source |
|---|---|
| 789 | 1 /* |
| 2 * CDDL HEADER START | |
| 3 * | |
| 4 * The contents of this file are subject to the terms of the | |
| 1544 | 5 * Common Development and Distribution License (the "License"). |
| 6 * You may not use this file except in compliance with the License. | |
| 789 | 7 * |
| 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 9 * or http://www.opensolaris.org/os/licensing. | |
| 10 * See the License for the specific language governing permissions | |
| 11 * and limitations under the License. | |
| 12 * | |
| 13 * When distributing Covered Code, include this CDDL HEADER in each | |
| 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
| 15 * If applicable, add the following below this CDDL HEADER, with the | |
| 16 * fields enclosed by brackets "[]" replaced with your own identifying | |
| 17 * information: Portions Copyright [yyyy] [name of copyright owner] | |
| 18 * | |
| 19 * CDDL HEADER END | |
| 20 */ | |
| 2082 | 21 |
| 789 | 22 /* |
|
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23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. |
| 789 | 24 * Use is subject to license terms. |
| 25 */ | |
| 26 | |
| 27 #pragma ident "%Z%%M% %I% %E% SMI" | |
| 28 | |
| 29 /* | |
| 30 * This file contains all the routines used when modifying on-disk SPA state. | |
| 31 * This includes opening, importing, destroying, exporting a pool, and syncing a | |
| 32 * pool. | |
| 33 */ | |
| 34 | |
| 35 #include <sys/zfs_context.h> | |
| 1544 | 36 #include <sys/fm/fs/zfs.h> |
| 789 | 37 #include <sys/spa_impl.h> |
| 38 #include <sys/zio.h> | |
| 39 #include <sys/zio_checksum.h> | |
| 40 #include <sys/zio_compress.h> | |
| 41 #include <sys/dmu.h> | |
| 42 #include <sys/dmu_tx.h> | |
| 43 #include <sys/zap.h> | |
| 44 #include <sys/zil.h> | |
| 45 #include <sys/vdev_impl.h> | |
| 46 #include <sys/metaslab.h> | |
| 47 #include <sys/uberblock_impl.h> | |
| 48 #include <sys/txg.h> | |
| 49 #include <sys/avl.h> | |
| 50 #include <sys/dmu_traverse.h> | |
| 3912 | 51 #include <sys/dmu_objset.h> |
| 789 | 52 #include <sys/unique.h> |
| 53 #include <sys/dsl_pool.h> | |
| 3912 | 54 #include <sys/dsl_dataset.h> |
| 789 | 55 #include <sys/dsl_dir.h> |
| 56 #include <sys/dsl_prop.h> | |
| 3912 | 57 #include <sys/dsl_synctask.h> |
| 789 | 58 #include <sys/fs/zfs.h> |
| 59 #include <sys/callb.h> | |
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60 #include <sys/systeminfo.h> |
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61 #include <sys/sunddi.h> |
| 789 | 62 |
| 2986 | 63 int zio_taskq_threads = 8; |
| 64 | |
| 789 | 65 /* |
| 66 * ========================================================================== | |
| 67 * SPA state manipulation (open/create/destroy/import/export) | |
| 68 * ========================================================================== | |
| 69 */ | |
| 70 | |
| 1544 | 71 static int |
| 72 spa_error_entry_compare(const void *a, const void *b) | |
| 73 { | |
| 74 spa_error_entry_t *sa = (spa_error_entry_t *)a; | |
| 75 spa_error_entry_t *sb = (spa_error_entry_t *)b; | |
| 76 int ret; | |
| 77 | |
| 78 ret = bcmp(&sa->se_bookmark, &sb->se_bookmark, | |
| 79 sizeof (zbookmark_t)); | |
| 80 | |
| 81 if (ret < 0) | |
| 82 return (-1); | |
| 83 else if (ret > 0) | |
| 84 return (1); | |
| 85 else | |
| 86 return (0); | |
| 87 } | |
| 88 | |
| 89 /* | |
| 90 * Utility function which retrieves copies of the current logs and | |
| 91 * re-initializes them in the process. | |
| 92 */ | |
| 93 void | |
| 94 spa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub) | |
| 95 { | |
| 96 ASSERT(MUTEX_HELD(&spa->spa_errlist_lock)); | |
| 97 | |
| 98 bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t)); | |
| 99 bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t)); | |
| 100 | |
| 101 avl_create(&spa->spa_errlist_scrub, | |
| 102 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 103 offsetof(spa_error_entry_t, se_avl)); | |
| 104 avl_create(&spa->spa_errlist_last, | |
| 105 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 106 offsetof(spa_error_entry_t, se_avl)); | |
| 107 } | |
| 108 | |
| 789 | 109 /* |
| 110 * Activate an uninitialized pool. | |
| 111 */ | |
| 112 static void | |
| 113 spa_activate(spa_t *spa) | |
| 114 { | |
| 115 int t; | |
| 116 | |
| 117 ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED); | |
| 118 | |
| 119 spa->spa_state = POOL_STATE_ACTIVE; | |
| 120 | |
| 121 spa->spa_normal_class = metaslab_class_create(); | |
| 4527 | 122 spa->spa_log_class = metaslab_class_create(); |
| 789 | 123 |
| 124 for (t = 0; t < ZIO_TYPES; t++) { | |
| 125 spa->spa_zio_issue_taskq[t] = taskq_create("spa_zio_issue", | |
| 2986 | 126 zio_taskq_threads, maxclsyspri, 50, INT_MAX, |
| 789 | 127 TASKQ_PREPOPULATE); |
| 128 spa->spa_zio_intr_taskq[t] = taskq_create("spa_zio_intr", | |
| 2986 | 129 zio_taskq_threads, maxclsyspri, 50, INT_MAX, |
| 789 | 130 TASKQ_PREPOPULATE); |
| 131 } | |
| 132 | |
| 133 rw_init(&spa->spa_traverse_lock, NULL, RW_DEFAULT, NULL); | |
| 134 | |
| 2856 | 135 mutex_init(&spa->spa_async_lock, NULL, MUTEX_DEFAULT, NULL); |
| 136 mutex_init(&spa->spa_config_cache_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 137 mutex_init(&spa->spa_scrub_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 138 mutex_init(&spa->spa_errlog_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 139 mutex_init(&spa->spa_errlist_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 140 mutex_init(&spa->spa_config_lock.scl_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 141 mutex_init(&spa->spa_sync_bplist.bpl_lock, NULL, MUTEX_DEFAULT, NULL); | |
| 2926 | 142 mutex_init(&spa->spa_history_lock, NULL, MUTEX_DEFAULT, NULL); |
| 3912 | 143 mutex_init(&spa->spa_props_lock, NULL, MUTEX_DEFAULT, NULL); |
| 2856 | 144 |
| 789 | 145 list_create(&spa->spa_dirty_list, sizeof (vdev_t), |
| 146 offsetof(vdev_t, vdev_dirty_node)); | |
| 147 | |
| 148 txg_list_create(&spa->spa_vdev_txg_list, | |
| 149 offsetof(struct vdev, vdev_txg_node)); | |
| 1544 | 150 |
| 151 avl_create(&spa->spa_errlist_scrub, | |
| 152 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 153 offsetof(spa_error_entry_t, se_avl)); | |
| 154 avl_create(&spa->spa_errlist_last, | |
| 155 spa_error_entry_compare, sizeof (spa_error_entry_t), | |
| 156 offsetof(spa_error_entry_t, se_avl)); | |
| 789 | 157 } |
| 158 | |
| 159 /* | |
| 160 * Opposite of spa_activate(). | |
| 161 */ | |
| 162 static void | |
| 163 spa_deactivate(spa_t *spa) | |
| 164 { | |
| 165 int t; | |
| 166 | |
| 167 ASSERT(spa->spa_sync_on == B_FALSE); | |
| 168 ASSERT(spa->spa_dsl_pool == NULL); | |
| 169 ASSERT(spa->spa_root_vdev == NULL); | |
| 170 | |
| 171 ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED); | |
| 172 | |
| 173 txg_list_destroy(&spa->spa_vdev_txg_list); | |
| 174 | |
| 175 list_destroy(&spa->spa_dirty_list); | |
| 176 | |
| 177 rw_destroy(&spa->spa_traverse_lock); | |
| 178 | |
| 179 for (t = 0; t < ZIO_TYPES; t++) { | |
| 180 taskq_destroy(spa->spa_zio_issue_taskq[t]); | |
| 181 taskq_destroy(spa->spa_zio_intr_taskq[t]); | |
| 182 spa->spa_zio_issue_taskq[t] = NULL; | |
| 183 spa->spa_zio_intr_taskq[t] = NULL; | |
| 184 } | |
| 185 | |
| 186 metaslab_class_destroy(spa->spa_normal_class); | |
| 187 spa->spa_normal_class = NULL; | |
| 188 | |
| 4527 | 189 metaslab_class_destroy(spa->spa_log_class); |
| 190 spa->spa_log_class = NULL; | |
| 191 | |
| 1544 | 192 /* |
| 193 * If this was part of an import or the open otherwise failed, we may | |
| 194 * still have errors left in the queues. Empty them just in case. | |
| 195 */ | |
| 196 spa_errlog_drain(spa); | |
| 197 | |
| 198 avl_destroy(&spa->spa_errlist_scrub); | |
| 199 avl_destroy(&spa->spa_errlist_last); | |
| 200 | |
| 789 | 201 spa->spa_state = POOL_STATE_UNINITIALIZED; |
| 202 } | |
| 203 | |
| 204 /* | |
| 205 * Verify a pool configuration, and construct the vdev tree appropriately. This | |
| 206 * will create all the necessary vdevs in the appropriate layout, with each vdev | |
| 207 * in the CLOSED state. This will prep the pool before open/creation/import. | |
| 208 * All vdev validation is done by the vdev_alloc() routine. | |
| 209 */ | |
| 2082 | 210 static int |
| 211 spa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, | |
| 212 uint_t id, int atype) | |
| 789 | 213 { |
| 214 nvlist_t **child; | |
| 215 uint_t c, children; | |
| 2082 | 216 int error; |
| 217 | |
| 218 if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0) | |
| 219 return (error); | |
| 220 | |
| 221 if ((*vdp)->vdev_ops->vdev_op_leaf) | |
| 222 return (0); | |
| 789 | 223 |
| 224 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, | |
| 225 &child, &children) != 0) { | |
| 2082 | 226 vdev_free(*vdp); |
| 227 *vdp = NULL; | |
| 228 return (EINVAL); | |
| 789 | 229 } |
| 230 | |
| 231 for (c = 0; c < children; c++) { | |
| 2082 | 232 vdev_t *vd; |
| 233 if ((error = spa_config_parse(spa, &vd, child[c], *vdp, c, | |
| 234 atype)) != 0) { | |
| 235 vdev_free(*vdp); | |
| 236 *vdp = NULL; | |
| 237 return (error); | |
| 789 | 238 } |
| 239 } | |
| 240 | |
| 2082 | 241 ASSERT(*vdp != NULL); |
| 242 | |
| 243 return (0); | |
| 789 | 244 } |
| 245 | |
| 246 /* | |
| 247 * Opposite of spa_load(). | |
| 248 */ | |
| 249 static void | |
| 250 spa_unload(spa_t *spa) | |
| 251 { | |
| 2082 | 252 int i; |
| 253 | |
| 789 | 254 /* |
| 1544 | 255 * Stop async tasks. |
| 256 */ | |
| 257 spa_async_suspend(spa); | |
| 258 | |
| 259 /* | |
| 789 | 260 * Stop syncing. |
| 261 */ | |
| 262 if (spa->spa_sync_on) { | |
| 263 txg_sync_stop(spa->spa_dsl_pool); | |
| 264 spa->spa_sync_on = B_FALSE; | |
| 265 } | |
| 266 | |
| 267 /* | |
| 268 * Wait for any outstanding prefetch I/O to complete. | |
| 269 */ | |
| 1544 | 270 spa_config_enter(spa, RW_WRITER, FTAG); |
| 271 spa_config_exit(spa, FTAG); | |
| 789 | 272 |
| 273 /* | |
| 274 * Close the dsl pool. | |
| 275 */ | |
| 276 if (spa->spa_dsl_pool) { | |
| 277 dsl_pool_close(spa->spa_dsl_pool); | |
| 278 spa->spa_dsl_pool = NULL; | |
| 279 } | |
| 280 | |
| 281 /* | |
| 282 * Close all vdevs. | |
| 283 */ | |
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284 if (spa->spa_root_vdev) |
| 789 | 285 vdev_free(spa->spa_root_vdev); |
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286 ASSERT(spa->spa_root_vdev == NULL); |
| 1544 | 287 |
| 2082 | 288 for (i = 0; i < spa->spa_nspares; i++) |
| 289 vdev_free(spa->spa_spares[i]); | |
| 290 if (spa->spa_spares) { | |
| 291 kmem_free(spa->spa_spares, spa->spa_nspares * sizeof (void *)); | |
| 292 spa->spa_spares = NULL; | |
| 293 } | |
| 294 if (spa->spa_sparelist) { | |
| 295 nvlist_free(spa->spa_sparelist); | |
| 296 spa->spa_sparelist = NULL; | |
| 297 } | |
| 298 | |
| 1544 | 299 spa->spa_async_suspended = 0; |
| 789 | 300 } |
| 301 | |
| 302 /* | |
| 2082 | 303 * Load (or re-load) the current list of vdevs describing the active spares for |
| 304 * this pool. When this is called, we have some form of basic information in | |
| 305 * 'spa_sparelist'. We parse this into vdevs, try to open them, and then | |
| 306 * re-generate a more complete list including status information. | |
| 307 */ | |
| 308 static void | |
| 309 spa_load_spares(spa_t *spa) | |
| 310 { | |
| 311 nvlist_t **spares; | |
| 312 uint_t nspares; | |
| 313 int i; | |
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314 vdev_t *vd, *tvd; |
| 2082 | 315 |
| 316 /* | |
| 317 * First, close and free any existing spare vdevs. | |
| 318 */ | |
| 319 for (i = 0; i < spa->spa_nspares; i++) { | |
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320 vd = spa->spa_spares[i]; |
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321 |
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322 /* Undo the call to spa_activate() below */ |
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323 if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL && |
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324 tvd->vdev_isspare) |
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325 spa_spare_remove(tvd); |
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326 vdev_close(vd); |
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327 vdev_free(vd); |
| 2082 | 328 } |
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329 |
| 2082 | 330 if (spa->spa_spares) |
| 331 kmem_free(spa->spa_spares, spa->spa_nspares * sizeof (void *)); | |
| 332 | |
| 333 if (spa->spa_sparelist == NULL) | |
| 334 nspares = 0; | |
| 335 else | |
| 336 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 337 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 338 | |
| 339 spa->spa_nspares = (int)nspares; | |
| 340 spa->spa_spares = NULL; | |
| 341 | |
| 342 if (nspares == 0) | |
| 343 return; | |
| 344 | |
| 345 /* | |
| 346 * Construct the array of vdevs, opening them to get status in the | |
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347 * process. For each spare, there is potentially two different vdev_t |
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348 * structures associated with it: one in the list of spares (used only |
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349 * for basic validation purposes) and one in the active vdev |
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350 * configuration (if it's spared in). During this phase we open and |
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351 * validate each vdev on the spare list. If the vdev also exists in the |
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352 * active configuration, then we also mark this vdev as an active spare. |
| 2082 | 353 */ |
| 354 spa->spa_spares = kmem_alloc(nspares * sizeof (void *), KM_SLEEP); | |
| 355 for (i = 0; i < spa->spa_nspares; i++) { | |
| 356 VERIFY(spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
| 357 VDEV_ALLOC_SPARE) == 0); | |
| 358 ASSERT(vd != NULL); | |
| 359 | |
| 360 spa->spa_spares[i] = vd; | |
| 361 | |
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362 if ((tvd = spa_lookup_by_guid(spa, vd->vdev_guid)) != NULL) { |
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363 if (!tvd->vdev_isspare) |
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364 spa_spare_add(tvd); |
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365 |
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366 /* |
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367 * We only mark the spare active if we were successfully |
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368 * able to load the vdev. Otherwise, importing a pool |
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369 * with a bad active spare would result in strange |
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370 * behavior, because multiple pool would think the spare |
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371 * is actively in use. |
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372 * |
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373 * There is a vulnerability here to an equally bizarre |
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374 * circumstance, where a dead active spare is later |
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375 * brought back to life (onlined or otherwise). Given |
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376 * the rarity of this scenario, and the extra complexity |
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377 * it adds, we ignore the possibility. |
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378 */ |
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379 if (!vdev_is_dead(tvd)) |
|
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|
380 spa_spare_activate(tvd); |
|
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|
381 } |
|
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|
382 |
| 2082 | 383 if (vdev_open(vd) != 0) |
| 384 continue; | |
| 385 | |
| 386 vd->vdev_top = vd; | |
| 387 (void) vdev_validate_spare(vd); | |
| 388 } | |
| 389 | |
| 390 /* | |
| 391 * Recompute the stashed list of spares, with status information | |
| 392 * this time. | |
| 393 */ | |
| 394 VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 395 DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 396 | |
| 397 spares = kmem_alloc(spa->spa_nspares * sizeof (void *), KM_SLEEP); | |
| 398 for (i = 0; i < spa->spa_nspares; i++) | |
| 399 spares[i] = vdev_config_generate(spa, spa->spa_spares[i], | |
| 400 B_TRUE, B_TRUE); | |
| 401 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 402 spares, spa->spa_nspares) == 0); | |
| 403 for (i = 0; i < spa->spa_nspares; i++) | |
| 404 nvlist_free(spares[i]); | |
| 405 kmem_free(spares, spa->spa_nspares * sizeof (void *)); | |
| 406 } | |
| 407 | |
| 408 static int | |
| 409 load_nvlist(spa_t *spa, uint64_t obj, nvlist_t **value) | |
| 410 { | |
| 411 dmu_buf_t *db; | |
| 412 char *packed = NULL; | |
| 413 size_t nvsize = 0; | |
| 414 int error; | |
| 415 *value = NULL; | |
| 416 | |
| 417 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
| 418 nvsize = *(uint64_t *)db->db_data; | |
| 419 dmu_buf_rele(db, FTAG); | |
| 420 | |
| 421 packed = kmem_alloc(nvsize, KM_SLEEP); | |
| 422 error = dmu_read(spa->spa_meta_objset, obj, 0, nvsize, packed); | |
| 423 if (error == 0) | |
| 424 error = nvlist_unpack(packed, nvsize, value, 0); | |
| 425 kmem_free(packed, nvsize); | |
| 426 | |
| 427 return (error); | |
| 428 } | |
| 429 | |
| 430 /* | |
| 4451 | 431 * Checks to see if the given vdev could not be opened, in which case we post a |
| 432 * sysevent to notify the autoreplace code that the device has been removed. | |
| 433 */ | |
| 434 static void | |
| 435 spa_check_removed(vdev_t *vd) | |
| 436 { | |
| 437 int c; | |
| 438 | |
| 439 for (c = 0; c < vd->vdev_children; c++) | |
| 440 spa_check_removed(vd->vdev_child[c]); | |
| 441 | |
| 442 if (vd->vdev_ops->vdev_op_leaf && vdev_is_dead(vd)) { | |
| 443 zfs_post_autoreplace(vd->vdev_spa, vd); | |
| 444 spa_event_notify(vd->vdev_spa, vd, ESC_ZFS_VDEV_CHECK); | |
| 445 } | |
| 446 } | |
| 447 | |
| 448 /* | |
| 789 | 449 * Load an existing storage pool, using the pool's builtin spa_config as a |
| 1544 | 450 * source of configuration information. |
| 789 | 451 */ |
| 452 static int | |
| 1544 | 453 spa_load(spa_t *spa, nvlist_t *config, spa_load_state_t state, int mosconfig) |
| 789 | 454 { |
| 455 int error = 0; | |
| 456 nvlist_t *nvroot = NULL; | |
| 457 vdev_t *rvd; | |
| 458 uberblock_t *ub = &spa->spa_uberblock; | |
|
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459 uint64_t config_cache_txg = spa->spa_config_txg; |
| 789 | 460 uint64_t pool_guid; |
| 2082 | 461 uint64_t version; |
| 789 | 462 zio_t *zio; |
| 4451 | 463 uint64_t autoreplace = 0; |
| 789 | 464 |
| 1544 | 465 spa->spa_load_state = state; |
|
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|
466 |
| 789 | 467 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &nvroot) || |
| 1733 | 468 nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid)) { |
| 1544 | 469 error = EINVAL; |
| 470 goto out; | |
| 471 } | |
| 789 | 472 |
| 2082 | 473 /* |
| 474 * Versioning wasn't explicitly added to the label until later, so if | |
| 475 * it's not present treat it as the initial version. | |
| 476 */ | |
| 477 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &version) != 0) | |
| 478 version = ZFS_VERSION_INITIAL; | |
| 479 | |
| 1733 | 480 (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, |
| 481 &spa->spa_config_txg); | |
| 482 | |
|
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483 if ((state == SPA_LOAD_IMPORT || state == SPA_LOAD_TRYIMPORT) && |
| 1544 | 484 spa_guid_exists(pool_guid, 0)) { |
| 485 error = EEXIST; | |
| 486 goto out; | |
| 487 } | |
| 789 | 488 |
|
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|
489 spa->spa_load_guid = pool_guid; |
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490 |
| 789 | 491 /* |
| 2082 | 492 * Parse the configuration into a vdev tree. We explicitly set the |
| 493 * value that will be returned by spa_version() since parsing the | |
| 494 * configuration requires knowing the version number. | |
| 789 | 495 */ |
| 1544 | 496 spa_config_enter(spa, RW_WRITER, FTAG); |
| 2082 | 497 spa->spa_ubsync.ub_version = version; |
| 498 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_LOAD); | |
| 1544 | 499 spa_config_exit(spa, FTAG); |
| 789 | 500 |
| 2082 | 501 if (error != 0) |
| 1544 | 502 goto out; |
| 789 | 503 |
|
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504 ASSERT(spa->spa_root_vdev == rvd); |
| 789 | 505 ASSERT(spa_guid(spa) == pool_guid); |
| 506 | |
| 507 /* | |
| 508 * Try to open all vdevs, loading each label in the process. | |
| 509 */ | |
|
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510 error = vdev_open(rvd); |
|
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511 if (error != 0) |
| 1544 | 512 goto out; |
| 789 | 513 |
| 514 /* | |
|
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515 * Validate the labels for all leaf vdevs. We need to grab the config |
|
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516 * lock because all label I/O is done with the ZIO_FLAG_CONFIG_HELD |
|
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|
517 * flag. |
|
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|
518 */ |
|
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519 spa_config_enter(spa, RW_READER, FTAG); |
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520 error = vdev_validate(rvd); |
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|
521 spa_config_exit(spa, FTAG); |
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522 |
|
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523 if (error != 0) |
|
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524 goto out; |
|
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|
525 |
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526 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
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527 error = ENXIO; |
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528 goto out; |
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|
529 } |
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530 |
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|
531 /* |
| 789 | 532 * Find the best uberblock. |
| 533 */ | |
| 534 bzero(ub, sizeof (uberblock_t)); | |
| 535 | |
| 536 zio = zio_root(spa, NULL, NULL, | |
| 537 ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); | |
| 538 vdev_uberblock_load(zio, rvd, ub); | |
| 539 error = zio_wait(zio); | |
| 540 | |
| 541 /* | |
| 542 * If we weren't able to find a single valid uberblock, return failure. | |
| 543 */ | |
| 544 if (ub->ub_txg == 0) { | |
| 1760 | 545 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 546 VDEV_AUX_CORRUPT_DATA); | |
| 1544 | 547 error = ENXIO; |
| 548 goto out; | |
| 549 } | |
| 550 | |
| 551 /* | |
| 552 * If the pool is newer than the code, we can't open it. | |
| 553 */ | |
| 1760 | 554 if (ub->ub_version > ZFS_VERSION) { |
| 555 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 556 VDEV_AUX_VERSION_NEWER); | |
| 1544 | 557 error = ENOTSUP; |
| 558 goto out; | |
| 789 | 559 } |
| 560 | |
| 561 /* | |
| 562 * If the vdev guid sum doesn't match the uberblock, we have an | |
| 563 * incomplete configuration. | |
| 564 */ | |
| 1732 | 565 if (rvd->vdev_guid_sum != ub->ub_guid_sum && mosconfig) { |
| 1544 | 566 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 567 VDEV_AUX_BAD_GUID_SUM); | |
| 568 error = ENXIO; | |
| 569 goto out; | |
| 789 | 570 } |
| 571 | |
| 572 /* | |
| 573 * Initialize internal SPA structures. | |
| 574 */ | |
| 575 spa->spa_state = POOL_STATE_ACTIVE; | |
| 576 spa->spa_ubsync = spa->spa_uberblock; | |
| 577 spa->spa_first_txg = spa_last_synced_txg(spa) + 1; | |
| 1544 | 578 error = dsl_pool_open(spa, spa->spa_first_txg, &spa->spa_dsl_pool); |
| 579 if (error) { | |
| 580 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 581 VDEV_AUX_CORRUPT_DATA); | |
| 582 goto out; | |
| 583 } | |
| 789 | 584 spa->spa_meta_objset = spa->spa_dsl_pool->dp_meta_objset; |
| 585 | |
| 1544 | 586 if (zap_lookup(spa->spa_meta_objset, |
| 789 | 587 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
| 1544 | 588 sizeof (uint64_t), 1, &spa->spa_config_object) != 0) { |
| 589 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 590 VDEV_AUX_CORRUPT_DATA); | |
| 591 error = EIO; | |
| 592 goto out; | |
| 593 } | |
| 789 | 594 |
| 595 if (!mosconfig) { | |
| 2082 | 596 nvlist_t *newconfig; |
|
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|
597 uint64_t hostid; |
| 2082 | 598 |
| 599 if (load_nvlist(spa, spa->spa_config_object, &newconfig) != 0) { | |
| 1544 | 600 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 601 VDEV_AUX_CORRUPT_DATA); | |
| 602 error = EIO; | |
| 603 goto out; | |
| 604 } | |
| 789 | 605 |
|
3975
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6282725 hostname/hostid should be stored in the label
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|
606 if (nvlist_lookup_uint64(newconfig, ZPOOL_CONFIG_HOSTID, |
|
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
607 &hostid) == 0) { |
|
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
608 char *hostname; |
|
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
609 unsigned long myhostid = 0; |
|
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
610 |
|
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|
611 VERIFY(nvlist_lookup_string(newconfig, |
|
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|
612 ZPOOL_CONFIG_HOSTNAME, &hostname) == 0); |
|
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|
613 |
|
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|
614 (void) ddi_strtoul(hw_serial, NULL, 10, &myhostid); |
|
4178
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6553537 zfs root fails to boot from a snv_63+zfsboot-pfinstall netinstall image
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|
615 if (hostid != 0 && myhostid != 0 && |
|
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|
616 (unsigned long)hostid != myhostid) { |
|
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6282725 hostname/hostid should be stored in the label
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|
617 cmn_err(CE_WARN, "pool '%s' could not be " |
|
6674f5d79069
6282725 hostname/hostid should be stored in the label
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|
618 "loaded as it was last accessed by " |
|
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|
619 "another system (host: %s hostid: 0x%lx). " |
|
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6282725 hostname/hostid should be stored in the label
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|
620 "See: http://www.sun.com/msg/ZFS-8000-EY", |
|
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|
621 spa->spa_name, hostname, |
|
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|
622 (unsigned long)hostid); |
|
6674f5d79069
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|
623 error = EBADF; |
|
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|
624 goto out; |
|
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|
625 } |
|
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|
626 } |
|
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|
627 |
| 789 | 628 spa_config_set(spa, newconfig); |
| 629 spa_unload(spa); | |
| 630 spa_deactivate(spa); | |
| 631 spa_activate(spa); | |
| 632 | |
| 1544 | 633 return (spa_load(spa, newconfig, state, B_TRUE)); |
| 634 } | |
| 635 | |
| 636 if (zap_lookup(spa->spa_meta_objset, | |
| 637 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, | |
| 638 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj) != 0) { | |
| 639 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 640 VDEV_AUX_CORRUPT_DATA); | |
| 641 error = EIO; | |
| 642 goto out; | |
| 789 | 643 } |
| 644 | |
| 1544 | 645 /* |
| 2082 | 646 * Load the bit that tells us to use the new accounting function |
| 647 * (raid-z deflation). If we have an older pool, this will not | |
| 648 * be present. | |
| 649 */ | |
| 650 error = zap_lookup(spa->spa_meta_objset, | |
| 651 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 652 sizeof (uint64_t), 1, &spa->spa_deflate); | |
| 653 if (error != 0 && error != ENOENT) { | |
| 654 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 655 VDEV_AUX_CORRUPT_DATA); | |
| 656 error = EIO; | |
| 657 goto out; | |
| 658 } | |
| 659 | |
| 660 /* | |
| 1544 | 661 * Load the persistent error log. If we have an older pool, this will |
| 662 * not be present. | |
| 663 */ | |
| 664 error = zap_lookup(spa->spa_meta_objset, | |
| 665 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_LAST, | |
| 666 sizeof (uint64_t), 1, &spa->spa_errlog_last); | |
|
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667 if (error != 0 && error != ENOENT) { |
| 1544 | 668 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, |
| 669 VDEV_AUX_CORRUPT_DATA); | |
| 670 error = EIO; | |
| 671 goto out; | |
| 672 } | |
| 673 | |
| 674 error = zap_lookup(spa->spa_meta_objset, | |
| 675 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_ERRLOG_SCRUB, | |
| 676 sizeof (uint64_t), 1, &spa->spa_errlog_scrub); | |
| 677 if (error != 0 && error != ENOENT) { | |
| 678 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 679 VDEV_AUX_CORRUPT_DATA); | |
| 680 error = EIO; | |
| 681 goto out; | |
| 682 } | |
| 789 | 683 |
| 684 /* | |
| 2926 | 685 * Load the history object. If we have an older pool, this |
| 686 * will not be present. | |
| 687 */ | |
| 688 error = zap_lookup(spa->spa_meta_objset, | |
| 689 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_HISTORY, | |
| 690 sizeof (uint64_t), 1, &spa->spa_history); | |
| 691 if (error != 0 && error != ENOENT) { | |
| 692 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 693 VDEV_AUX_CORRUPT_DATA); | |
| 694 error = EIO; | |
| 695 goto out; | |
| 696 } | |
| 697 | |
| 698 /* | |
| 2082 | 699 * Load any hot spares for this pool. |
| 700 */ | |
| 701 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, | |
| 702 DMU_POOL_SPARES, sizeof (uint64_t), 1, &spa->spa_spares_object); | |
| 703 if (error != 0 && error != ENOENT) { | |
| 704 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 705 VDEV_AUX_CORRUPT_DATA); | |
| 706 error = EIO; | |
| 707 goto out; | |
| 708 } | |
| 709 if (error == 0) { | |
| 710 ASSERT(spa_version(spa) >= ZFS_VERSION_SPARES); | |
| 711 if (load_nvlist(spa, spa->spa_spares_object, | |
| 712 &spa->spa_sparelist) != 0) { | |
| 713 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 714 VDEV_AUX_CORRUPT_DATA); | |
| 715 error = EIO; | |
| 716 goto out; | |
| 717 } | |
| 718 | |
| 719 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 720 spa_load_spares(spa); | |
| 721 spa_config_exit(spa, FTAG); | |
| 722 } | |
| 723 | |
| 3912 | 724 error = zap_lookup(spa->spa_meta_objset, DMU_POOL_DIRECTORY_OBJECT, |
| 725 DMU_POOL_PROPS, sizeof (uint64_t), 1, &spa->spa_pool_props_object); | |
| 726 | |
| 727 if (error && error != ENOENT) { | |
| 728 vdev_set_state(rvd, B_TRUE, VDEV_STATE_CANT_OPEN, | |
| 729 VDEV_AUX_CORRUPT_DATA); | |
| 730 error = EIO; | |
| 731 goto out; | |
| 732 } | |
| 733 | |
| 734 if (error == 0) { | |
| 735 (void) zap_lookup(spa->spa_meta_objset, | |
| 736 spa->spa_pool_props_object, | |
| 4451 | 737 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), |
| 3912 | 738 sizeof (uint64_t), 1, &spa->spa_bootfs); |
| 4451 | 739 (void) zap_lookup(spa->spa_meta_objset, |
| 740 spa->spa_pool_props_object, | |
| 741 zpool_prop_to_name(ZPOOL_PROP_AUTOREPLACE), | |
| 742 sizeof (uint64_t), 1, &autoreplace); | |
| 3912 | 743 } |
| 744 | |
| 2082 | 745 /* |
| 4451 | 746 * If the 'autoreplace' property is set, then post a resource notifying |
| 747 * the ZFS DE that it should not issue any faults for unopenable | |
| 748 * devices. We also iterate over the vdevs, and post a sysevent for any | |
| 749 * unopenable vdevs so that the normal autoreplace handler can take | |
| 750 * over. | |
| 751 */ | |
| 752 if (autoreplace) | |
| 753 spa_check_removed(spa->spa_root_vdev); | |
| 754 | |
| 755 /* | |
|
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756 * Load the vdev state for all toplevel vdevs. |
| 789 | 757 */ |
|
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758 vdev_load(rvd); |
| 789 | 759 |
| 760 /* | |
| 761 * Propagate the leaf DTLs we just loaded all the way up the tree. | |
| 762 */ | |
| 1544 | 763 spa_config_enter(spa, RW_WRITER, FTAG); |
| 789 | 764 vdev_dtl_reassess(rvd, 0, 0, B_FALSE); |
| 1544 | 765 spa_config_exit(spa, FTAG); |
| 789 | 766 |
| 767 /* | |
| 768 * Check the state of the root vdev. If it can't be opened, it | |
| 769 * indicates one or more toplevel vdevs are faulted. | |
| 770 */ | |
| 1544 | 771 if (rvd->vdev_state <= VDEV_STATE_CANT_OPEN) { |
| 772 error = ENXIO; | |
| 773 goto out; | |
| 774 } | |
| 789 | 775 |
| 1544 | 776 if ((spa_mode & FWRITE) && state != SPA_LOAD_TRYIMPORT) { |
|
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777 dmu_tx_t *tx; |
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778 int need_update = B_FALSE; |
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779 int c; |
|
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780 |
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781 /* |
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782 * Claim log blocks that haven't been committed yet. |
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783 * This must all happen in a single txg. |
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784 */ |
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785 tx = dmu_tx_create_assigned(spa_get_dsl(spa), |
| 789 | 786 spa_first_txg(spa)); |
| 2417 | 787 (void) dmu_objset_find(spa->spa_name, |
| 788 zil_claim, tx, DS_FIND_CHILDREN); | |
| 789 | 789 dmu_tx_commit(tx); |
| 790 | |
| 791 spa->spa_sync_on = B_TRUE; | |
| 792 txg_sync_start(spa->spa_dsl_pool); | |
| 793 | |
| 794 /* | |
| 795 * Wait for all claims to sync. | |
| 796 */ | |
| 797 txg_wait_synced(spa->spa_dsl_pool, 0); | |
|
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798 |
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799 /* |
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800 * If the config cache is stale, or we have uninitialized |
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801 * metaslabs (see spa_vdev_add()), then update the config. |
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802 */ |
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803 if (config_cache_txg != spa->spa_config_txg || |
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804 state == SPA_LOAD_IMPORT) |
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805 need_update = B_TRUE; |
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806 |
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807 for (c = 0; c < rvd->vdev_children; c++) |
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808 if (rvd->vdev_child[c]->vdev_ms_array == 0) |
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809 need_update = B_TRUE; |
|
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810 |
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811 /* |
|
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812 * Update the config cache asychronously in case we're the |
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813 * root pool, in which case the config cache isn't writable yet. |
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814 */ |
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815 if (need_update) |
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816 spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); |
| 789 | 817 } |
| 818 | |
| 1544 | 819 error = 0; |
| 820 out: | |
| 2082 | 821 if (error && error != EBADF) |
| 1544 | 822 zfs_ereport_post(FM_EREPORT_ZFS_POOL, spa, NULL, NULL, 0, 0); |
| 823 spa->spa_load_state = SPA_LOAD_NONE; | |
| 824 spa->spa_ena = 0; | |
| 825 | |
| 826 return (error); | |
| 789 | 827 } |
| 828 | |
| 829 /* | |
| 830 * Pool Open/Import | |
| 831 * | |
| 832 * The import case is identical to an open except that the configuration is sent | |
| 833 * down from userland, instead of grabbed from the configuration cache. For the | |
| 834 * case of an open, the pool configuration will exist in the | |
| 4451 | 835 * POOL_STATE_UNINITIALIZED state. |
| 789 | 836 * |
| 837 * The stats information (gen/count/ustats) is used to gather vdev statistics at | |
| 838 * the same time open the pool, without having to keep around the spa_t in some | |
| 839 * ambiguous state. | |
| 840 */ | |
| 841 static int | |
| 842 spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t **config) | |
| 843 { | |
| 844 spa_t *spa; | |
| 845 int error; | |
| 846 int loaded = B_FALSE; | |
| 847 int locked = B_FALSE; | |
| 848 | |
| 849 *spapp = NULL; | |
| 850 | |
| 851 /* | |
| 852 * As disgusting as this is, we need to support recursive calls to this | |
| 853 * function because dsl_dir_open() is called during spa_load(), and ends | |
| 854 * up calling spa_open() again. The real fix is to figure out how to | |
| 855 * avoid dsl_dir_open() calling this in the first place. | |
| 856 */ | |
| 857 if (mutex_owner(&spa_namespace_lock) != curthread) { | |
| 858 mutex_enter(&spa_namespace_lock); | |
| 859 locked = B_TRUE; | |
| 860 } | |
| 861 | |
| 862 if ((spa = spa_lookup(pool)) == NULL) { | |
| 863 if (locked) | |
| 864 mutex_exit(&spa_namespace_lock); | |
| 865 return (ENOENT); | |
| 866 } | |
| 867 if (spa->spa_state == POOL_STATE_UNINITIALIZED) { | |
| 868 | |
| 869 spa_activate(spa); | |
| 870 | |
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871 error = spa_load(spa, spa->spa_config, SPA_LOAD_OPEN, B_FALSE); |
| 789 | 872 |
| 873 if (error == EBADF) { | |
| 874 /* | |
|
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875 * If vdev_validate() returns failure (indicated by |
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876 * EBADF), it indicates that one of the vdevs indicates |
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877 * that the pool has been exported or destroyed. If |
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878 * this is the case, the config cache is out of sync and |
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879 * we should remove the pool from the namespace. |
| 789 | 880 */ |
| 2082 | 881 zfs_post_ok(spa, NULL); |
| 789 | 882 spa_unload(spa); |
| 883 spa_deactivate(spa); | |
| 884 spa_remove(spa); | |
| 885 spa_config_sync(); | |
| 886 if (locked) | |
| 887 mutex_exit(&spa_namespace_lock); | |
| 888 return (ENOENT); | |
| 1544 | 889 } |
| 890 | |
| 891 if (error) { | |
| 789 | 892 /* |
| 893 * We can't open the pool, but we still have useful | |
| 894 * information: the state of each vdev after the | |
| 895 * attempted vdev_open(). Return this to the user. | |
| 896 */ | |
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897 if (config != NULL && spa->spa_root_vdev != NULL) { |
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898 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 899 *config = spa_config_generate(spa, NULL, -1ULL, |
| 900 B_TRUE); | |
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901 spa_config_exit(spa, FTAG); |
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902 } |
| 789 | 903 spa_unload(spa); |
| 904 spa_deactivate(spa); | |
| 1544 | 905 spa->spa_last_open_failed = B_TRUE; |
| 789 | 906 if (locked) |
| 907 mutex_exit(&spa_namespace_lock); | |
| 908 *spapp = NULL; | |
| 909 return (error); | |
| 1544 | 910 } else { |
| 911 zfs_post_ok(spa, NULL); | |
| 912 spa->spa_last_open_failed = B_FALSE; | |
| 789 | 913 } |
| 914 | |
| 915 loaded = B_TRUE; | |
| 916 } | |
| 917 | |
| 918 spa_open_ref(spa, tag); | |
| 4451 | 919 |
| 920 /* | |
| 921 * If we just loaded the pool, resilver anything that's out of date. | |
| 922 */ | |
| 923 if (loaded && (spa_mode & FWRITE)) | |
| 924 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 925 | |
| 789 | 926 if (locked) |
| 927 mutex_exit(&spa_namespace_lock); | |
| 928 | |
| 929 *spapp = spa; | |
| 930 | |
| 931 if (config != NULL) { | |
| 1544 | 932 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 933 *config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
| 1544 | 934 spa_config_exit(spa, FTAG); |
| 789 | 935 } |
| 936 | |
| 937 return (0); | |
| 938 } | |
| 939 | |
| 940 int | |
| 941 spa_open(const char *name, spa_t **spapp, void *tag) | |
| 942 { | |
| 943 return (spa_open_common(name, spapp, tag, NULL)); | |
| 944 } | |
| 945 | |
| 1544 | 946 /* |
| 947 * Lookup the given spa_t, incrementing the inject count in the process, | |
| 948 * preventing it from being exported or destroyed. | |
| 949 */ | |
| 950 spa_t * | |
| 951 spa_inject_addref(char *name) | |
| 952 { | |
| 953 spa_t *spa; | |
| 954 | |
| 955 mutex_enter(&spa_namespace_lock); | |
| 956 if ((spa = spa_lookup(name)) == NULL) { | |
| 957 mutex_exit(&spa_namespace_lock); | |
| 958 return (NULL); | |
| 959 } | |
| 960 spa->spa_inject_ref++; | |
| 961 mutex_exit(&spa_namespace_lock); | |
| 962 | |
| 963 return (spa); | |
| 964 } | |
| 965 | |
| 966 void | |
| 967 spa_inject_delref(spa_t *spa) | |
| 968 { | |
| 969 mutex_enter(&spa_namespace_lock); | |
| 970 spa->spa_inject_ref--; | |
| 971 mutex_exit(&spa_namespace_lock); | |
| 972 } | |
| 973 | |
| 2082 | 974 static void |
| 975 spa_add_spares(spa_t *spa, nvlist_t *config) | |
| 976 { | |
| 977 nvlist_t **spares; | |
| 978 uint_t i, nspares; | |
| 979 nvlist_t *nvroot; | |
| 980 uint64_t guid; | |
| 981 vdev_stat_t *vs; | |
| 982 uint_t vsc; | |
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983 uint64_t pool; |
| 2082 | 984 |
| 985 if (spa->spa_nspares == 0) | |
| 986 return; | |
| 987 | |
| 988 VERIFY(nvlist_lookup_nvlist(config, | |
| 989 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); | |
| 990 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 991 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 992 if (nspares != 0) { | |
| 993 VERIFY(nvlist_add_nvlist_array(nvroot, | |
| 994 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 995 VERIFY(nvlist_lookup_nvlist_array(nvroot, | |
| 996 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 997 | |
| 998 /* | |
| 999 * Go through and find any spares which have since been | |
| 1000 * repurposed as an active spare. If this is the case, update | |
| 1001 * their status appropriately. | |
| 1002 */ | |
| 1003 for (i = 0; i < nspares; i++) { | |
| 1004 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 1005 ZPOOL_CONFIG_GUID, &guid) == 0); | |
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1006 if (spa_spare_exists(guid, &pool) && pool != 0ULL) { |
| 2082 | 1007 VERIFY(nvlist_lookup_uint64_array( |
| 1008 spares[i], ZPOOL_CONFIG_STATS, | |
| 1009 (uint64_t **)&vs, &vsc) == 0); | |
| 1010 vs->vs_state = VDEV_STATE_CANT_OPEN; | |
| 1011 vs->vs_aux = VDEV_AUX_SPARED; | |
| 1012 } | |
| 1013 } | |
| 1014 } | |
| 1015 } | |
| 1016 | |
| 789 | 1017 int |
| 1544 | 1018 spa_get_stats(const char *name, nvlist_t **config, char *altroot, size_t buflen) |
| 789 | 1019 { |
| 1020 int error; | |
| 1021 spa_t *spa; | |
| 1022 | |
| 1023 *config = NULL; | |
| 1024 error = spa_open_common(name, &spa, FTAG, config); | |
| 1025 | |
| 2082 | 1026 if (spa && *config != NULL) { |
| 1544 | 1027 VERIFY(nvlist_add_uint64(*config, ZPOOL_CONFIG_ERRCOUNT, |
| 1028 spa_get_errlog_size(spa)) == 0); | |
| 1029 | |
| 2082 | 1030 spa_add_spares(spa, *config); |
| 1031 } | |
| 1032 | |
| 1544 | 1033 /* |
| 1034 * We want to get the alternate root even for faulted pools, so we cheat | |
| 1035 * and call spa_lookup() directly. | |
| 1036 */ | |
| 1037 if (altroot) { | |
| 1038 if (spa == NULL) { | |
| 1039 mutex_enter(&spa_namespace_lock); | |
| 1040 spa = spa_lookup(name); | |
| 1041 if (spa) | |
| 1042 spa_altroot(spa, altroot, buflen); | |
| 1043 else | |
| 1044 altroot[0] = '\0'; | |
| 1045 spa = NULL; | |
| 1046 mutex_exit(&spa_namespace_lock); | |
| 1047 } else { | |
| 1048 spa_altroot(spa, altroot, buflen); | |
| 1049 } | |
| 1050 } | |
| 1051 | |
| 789 | 1052 if (spa != NULL) |
| 1053 spa_close(spa, FTAG); | |
| 1054 | |
| 1055 return (error); | |
| 1056 } | |
| 1057 | |
| 1058 /* | |
| 2082 | 1059 * Validate that the 'spares' array is well formed. We must have an array of |
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1060 * nvlists, each which describes a valid leaf vdev. If this is an import (mode |
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1061 * is VDEV_ALLOC_SPARE), then we allow corrupted spares to be specified, as long |
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1062 * as they are well-formed. |
| 2082 | 1063 */ |
| 1064 static int | |
| 1065 spa_validate_spares(spa_t *spa, nvlist_t *nvroot, uint64_t crtxg, int mode) | |
| 1066 { | |
| 1067 nvlist_t **spares; | |
| 1068 uint_t i, nspares; | |
| 1069 vdev_t *vd; | |
| 1070 int error; | |
| 1071 | |
| 1072 /* | |
| 1073 * It's acceptable to have no spares specified. | |
| 1074 */ | |
| 1075 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1076 &spares, &nspares) != 0) | |
| 1077 return (0); | |
| 1078 | |
| 1079 if (nspares == 0) | |
| 1080 return (EINVAL); | |
| 1081 | |
| 1082 /* | |
| 1083 * Make sure the pool is formatted with a version that supports hot | |
| 1084 * spares. | |
| 1085 */ | |
| 1086 if (spa_version(spa) < ZFS_VERSION_SPARES) | |
| 1087 return (ENOTSUP); | |
| 1088 | |
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1089 /* |
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1090 * Set the pending spare list so we correctly handle device in-use |
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1091 * checking. |
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1092 */ |
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1093 spa->spa_pending_spares = spares; |
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1094 spa->spa_pending_nspares = nspares; |
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1095 |
| 2082 | 1096 for (i = 0; i < nspares; i++) { |
| 1097 if ((error = spa_config_parse(spa, &vd, spares[i], NULL, 0, | |
| 1098 mode)) != 0) | |
|
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1099 goto out; |
| 2082 | 1100 |
| 1101 if (!vd->vdev_ops->vdev_op_leaf) { | |
| 1102 vdev_free(vd); | |
|
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1103 error = EINVAL; |
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1104 goto out; |
| 2082 | 1105 } |
| 1106 | |
| 1107 vd->vdev_top = vd; | |
|
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1108 |
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1109 if ((error = vdev_open(vd)) == 0 && |
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1110 (error = vdev_label_init(vd, crtxg, |
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1111 VDEV_LABEL_SPARE)) == 0) { |
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1112 VERIFY(nvlist_add_uint64(spares[i], ZPOOL_CONFIG_GUID, |
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1113 vd->vdev_guid) == 0); |
| 2082 | 1114 } |
| 1115 | |
| 1116 vdev_free(vd); | |
|
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1117 |
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1118 if (error && mode != VDEV_ALLOC_SPARE) |
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1119 goto out; |
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1120 else |
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1121 error = 0; |
| 2082 | 1122 } |
| 1123 | |
|
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1124 out: |
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1125 spa->spa_pending_spares = NULL; |
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1126 spa->spa_pending_nspares = 0; |
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1127 return (error); |
| 2082 | 1128 } |
| 1129 | |
| 1130 /* | |
| 789 | 1131 * Pool Creation |
| 1132 */ | |
| 1133 int | |
|
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1134 spa_create(const char *pool, nvlist_t *nvroot, const char *altroot) |
| 789 | 1135 { |
| 1136 spa_t *spa; | |
|
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1137 vdev_t *rvd; |
| 789 | 1138 dsl_pool_t *dp; |
| 1139 dmu_tx_t *tx; | |
| 2082 | 1140 int c, error = 0; |
| 789 | 1141 uint64_t txg = TXG_INITIAL; |
| 2082 | 1142 nvlist_t **spares; |
| 1143 uint_t nspares; | |
| 789 | 1144 |
| 1145 /* | |
| 1146 * If this pool already exists, return failure. | |
| 1147 */ | |
| 1148 mutex_enter(&spa_namespace_lock); | |
| 1149 if (spa_lookup(pool) != NULL) { | |
| 1150 mutex_exit(&spa_namespace_lock); | |
| 1151 return (EEXIST); | |
| 1152 } | |
| 1153 | |
| 1154 /* | |
| 1155 * Allocate a new spa_t structure. | |
| 1156 */ | |
|
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1157 spa = spa_add(pool, altroot); |
| 789 | 1158 spa_activate(spa); |
| 1159 | |
| 1160 spa->spa_uberblock.ub_txg = txg - 1; | |
| 1760 | 1161 spa->spa_uberblock.ub_version = ZFS_VERSION; |
| 789 | 1162 spa->spa_ubsync = spa->spa_uberblock; |
| 1163 | |
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1164 /* |
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1165 * Create the root vdev. |
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1166 */ |
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1167 spa_config_enter(spa, RW_WRITER, FTAG); |
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1168 |
| 2082 | 1169 error = spa_config_parse(spa, &rvd, nvroot, NULL, 0, VDEV_ALLOC_ADD); |
| 1170 | |
| 1171 ASSERT(error != 0 || rvd != NULL); | |
| 1172 ASSERT(error != 0 || spa->spa_root_vdev == rvd); | |
| 1173 | |
| 1174 if (error == 0 && rvd->vdev_children == 0) | |
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1175 error = EINVAL; |
| 2082 | 1176 |
| 1177 if (error == 0 && | |
| 1178 (error = vdev_create(rvd, txg, B_FALSE)) == 0 && | |
| 1179 (error = spa_validate_spares(spa, nvroot, txg, | |
| 1180 VDEV_ALLOC_ADD)) == 0) { | |
| 1181 for (c = 0; c < rvd->vdev_children; c++) | |
| 1182 vdev_init(rvd->vdev_child[c], txg); | |
| 1183 vdev_config_dirty(rvd); | |
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1184 } |
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1185 |
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1186 spa_config_exit(spa, FTAG); |
| 789 | 1187 |
| 2082 | 1188 if (error != 0) { |
| 789 | 1189 spa_unload(spa); |
| 1190 spa_deactivate(spa); | |
| 1191 spa_remove(spa); | |
| 1192 mutex_exit(&spa_namespace_lock); | |
| 1193 return (error); | |
| 1194 } | |
| 1195 | |
| 2082 | 1196 /* |
| 1197 * Get the list of spares, if specified. | |
| 1198 */ | |
| 1199 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1200 &spares, &nspares) == 0) { | |
| 1201 VERIFY(nvlist_alloc(&spa->spa_sparelist, NV_UNIQUE_NAME, | |
| 1202 KM_SLEEP) == 0); | |
| 1203 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1204 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1205 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1206 spa_load_spares(spa); | |
| 1207 spa_config_exit(spa, FTAG); | |
| 1208 spa->spa_sync_spares = B_TRUE; | |
| 1209 } | |
| 1210 | |
| 789 | 1211 spa->spa_dsl_pool = dp = dsl_pool_create(spa, txg); |
| 1212 spa->spa_meta_objset = dp->dp_meta_objset; | |
| 1213 | |
| 1214 tx = dmu_tx_create_assigned(dp, txg); | |
| 1215 | |
| 1216 /* | |
| 1217 * Create the pool config object. | |
| 1218 */ | |
| 1219 spa->spa_config_object = dmu_object_alloc(spa->spa_meta_objset, | |
| 1220 DMU_OT_PACKED_NVLIST, 1 << 14, | |
| 1221 DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); | |
| 1222 | |
| 1544 | 1223 if (zap_add(spa->spa_meta_objset, |
| 789 | 1224 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_CONFIG, |
| 1544 | 1225 sizeof (uint64_t), 1, &spa->spa_config_object, tx) != 0) { |
| 1226 cmn_err(CE_PANIC, "failed to add pool config"); | |
| 1227 } | |
| 789 | 1228 |
| 2082 | 1229 /* Newly created pools are always deflated. */ |
| 1230 spa->spa_deflate = TRUE; | |
| 1231 if (zap_add(spa->spa_meta_objset, | |
| 1232 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 1233 sizeof (uint64_t), 1, &spa->spa_deflate, tx) != 0) { | |
| 1234 cmn_err(CE_PANIC, "failed to add deflate"); | |
| 1235 } | |
| 1236 | |
| 789 | 1237 /* |
| 1238 * Create the deferred-free bplist object. Turn off compression | |
| 1239 * because sync-to-convergence takes longer if the blocksize | |
| 1240 * keeps changing. | |
| 1241 */ | |
| 1242 spa->spa_sync_bplist_obj = bplist_create(spa->spa_meta_objset, | |
| 1243 1 << 14, tx); | |
| 1244 dmu_object_set_compress(spa->spa_meta_objset, spa->spa_sync_bplist_obj, | |
| 1245 ZIO_COMPRESS_OFF, tx); | |
| 1246 | |
| 1544 | 1247 if (zap_add(spa->spa_meta_objset, |
| 789 | 1248 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SYNC_BPLIST, |
| 1544 | 1249 sizeof (uint64_t), 1, &spa->spa_sync_bplist_obj, tx) != 0) { |
| 1250 cmn_err(CE_PANIC, "failed to add bplist"); | |
| 1251 } | |
| 789 | 1252 |
| 2926 | 1253 /* |
| 1254 * Create the pool's history object. | |
| 1255 */ | |
| 1256 spa_history_create_obj(spa, tx); | |
| 1257 | |
| 789 | 1258 dmu_tx_commit(tx); |
| 1259 | |
| 4451 | 1260 spa->spa_bootfs = zpool_prop_default_numeric(ZPOOL_PROP_BOOTFS); |
| 789 | 1261 spa->spa_sync_on = B_TRUE; |
| 1262 txg_sync_start(spa->spa_dsl_pool); | |
| 1263 | |
| 1264 /* | |
| 1265 * We explicitly wait for the first transaction to complete so that our | |
| 1266 * bean counters are appropriately updated. | |
| 1267 */ | |
| 1268 txg_wait_synced(spa->spa_dsl_pool, txg); | |
| 1269 | |
| 1270 spa_config_sync(); | |
| 1271 | |
| 1272 mutex_exit(&spa_namespace_lock); | |
| 1273 | |
| 1274 return (0); | |
| 1275 } | |
| 1276 | |
| 1277 /* | |
| 1278 * Import the given pool into the system. We set up the necessary spa_t and | |
| 1279 * then call spa_load() to do the dirty work. | |
| 1280 */ | |
| 1281 int | |
|
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1282 spa_import(const char *pool, nvlist_t *config, const char *altroot) |
| 789 | 1283 { |
| 1284 spa_t *spa; | |
| 1285 int error; | |
| 2082 | 1286 nvlist_t *nvroot; |
| 1287 nvlist_t **spares; | |
| 1288 uint_t nspares; | |
| 789 | 1289 |
| 1290 if (!(spa_mode & FWRITE)) | |
| 1291 return (EROFS); | |
| 1292 | |
| 1293 /* | |
| 1294 * If a pool with this name exists, return failure. | |
| 1295 */ | |
| 1296 mutex_enter(&spa_namespace_lock); | |
| 1297 if (spa_lookup(pool) != NULL) { | |
| 1298 mutex_exit(&spa_namespace_lock); | |
| 1299 return (EEXIST); | |
| 1300 } | |
| 1301 | |
| 1302 /* | |
|
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1303 * Create and initialize the spa structure. |
| 789 | 1304 */ |
|
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1305 spa = spa_add(pool, altroot); |
| 789 | 1306 spa_activate(spa); |
| 1307 | |
| 1308 /* | |
|
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1309 * Pass off the heavy lifting to spa_load(). |
| 1732 | 1310 * Pass TRUE for mosconfig because the user-supplied config |
| 1311 * is actually the one to trust when doing an import. | |
|
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1312 */ |
| 1732 | 1313 error = spa_load(spa, config, SPA_LOAD_IMPORT, B_TRUE); |
| 789 | 1314 |
| 2082 | 1315 spa_config_enter(spa, RW_WRITER, FTAG); |
| 1316 /* | |
| 1317 * Toss any existing sparelist, as it doesn't have any validity anymore, | |
| 1318 * and conflicts with spa_has_spare(). | |
| 1319 */ | |
| 1320 if (spa->spa_sparelist) { | |
| 1321 nvlist_free(spa->spa_sparelist); | |
| 1322 spa->spa_sparelist = NULL; | |
| 1323 spa_load_spares(spa); | |
| 1324 } | |
| 1325 | |
| 1326 VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, | |
| 1327 &nvroot) == 0); | |
| 1328 if (error == 0) | |
| 1329 error = spa_validate_spares(spa, nvroot, -1ULL, | |
| 1330 VDEV_ALLOC_SPARE); | |
| 1331 spa_config_exit(spa, FTAG); | |
| 1332 | |
| 1333 if (error != 0) { | |
| 789 | 1334 spa_unload(spa); |
| 1335 spa_deactivate(spa); | |
| 1336 spa_remove(spa); | |
| 1337 mutex_exit(&spa_namespace_lock); | |
| 1338 return (error); | |
| 1339 } | |
| 1340 | |
|
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1341 /* |
| 2082 | 1342 * Override any spares as specified by the user, as these may have |
| 1343 * correct device names/devids, etc. | |
| 1344 */ | |
| 1345 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 1346 &spares, &nspares) == 0) { | |
| 1347 if (spa->spa_sparelist) | |
| 1348 VERIFY(nvlist_remove(spa->spa_sparelist, | |
| 1349 ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 1350 else | |
| 1351 VERIFY(nvlist_alloc(&spa->spa_sparelist, | |
| 1352 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 1353 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1354 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1355 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 1356 spa_load_spares(spa); | |
| 1357 spa_config_exit(spa, FTAG); | |
| 1358 spa->spa_sync_spares = B_TRUE; | |
| 1359 } | |
| 1360 | |
| 1361 /* | |
|
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1362 * Update the config cache to include the newly-imported pool. |
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1363 */ |
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1364 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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1365 |
| 789 | 1366 /* |
| 1367 * Resilver anything that's out of date. | |
| 1368 */ | |
| 1369 if (spa_mode & FWRITE) | |
| 1370 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); | |
| 1371 | |
| 4451 | 1372 mutex_exit(&spa_namespace_lock); |
| 1373 | |
| 789 | 1374 return (0); |
| 1375 } | |
| 1376 | |
| 1377 /* | |
| 1378 * This (illegal) pool name is used when temporarily importing a spa_t in order | |
| 1379 * to get the vdev stats associated with the imported devices. | |
| 1380 */ | |
| 1381 #define TRYIMPORT_NAME "$import" | |
| 1382 | |
| 1383 nvlist_t * | |
| 1384 spa_tryimport(nvlist_t *tryconfig) | |
| 1385 { | |
| 1386 nvlist_t *config = NULL; | |
| 1387 char *poolname; | |
| 1388 spa_t *spa; | |
| 1389 uint64_t state; | |
| 1390 | |
| 1391 if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) | |
| 1392 return (NULL); | |
| 1393 | |
| 1394 if (nvlist_lookup_uint64(tryconfig, ZPOOL_CONFIG_POOL_STATE, &state)) | |
| 1395 return (NULL); | |
| 1396 | |
|
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1397 /* |
|
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1398 * Create and initialize the spa structure. |
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1399 */ |
| 789 | 1400 mutex_enter(&spa_namespace_lock); |
|
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1401 spa = spa_add(TRYIMPORT_NAME, NULL); |
| 789 | 1402 spa_activate(spa); |
| 1403 | |
| 1404 /* | |
|
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1405 * Pass off the heavy lifting to spa_load(). |
| 1732 | 1406 * Pass TRUE for mosconfig because the user-supplied config |
| 1407 * is actually the one to trust when doing an import. | |
| 789 | 1408 */ |
| 1732 | 1409 (void) spa_load(spa, tryconfig, SPA_LOAD_TRYIMPORT, B_TRUE); |
| 789 | 1410 |
| 1411 /* | |
| 1412 * If 'tryconfig' was at least parsable, return the current config. | |
| 1413 */ | |
| 1414 if (spa->spa_root_vdev != NULL) { | |
|
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1415 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 1416 config = spa_config_generate(spa, NULL, -1ULL, B_TRUE); |
|
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1417 spa_config_exit(spa, FTAG); |
| 789 | 1418 VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, |
| 1419 poolname) == 0); | |
| 1420 VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, | |
| 1421 state) == 0); | |
|
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1422 VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TIMESTAMP, |
|
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1423 spa->spa_uberblock.ub_timestamp) == 0); |
| 2082 | 1424 |
| 1425 /* | |
| 1426 * Add the list of hot spares. | |
| 1427 */ | |
| 1428 spa_add_spares(spa, config); | |
| 789 | 1429 } |
| 1430 | |
| 1431 spa_unload(spa); | |
| 1432 spa_deactivate(spa); | |
| 1433 spa_remove(spa); | |
| 1434 mutex_exit(&spa_namespace_lock); | |
| 1435 | |
| 1436 return (config); | |
| 1437 } | |
| 1438 | |
| 1439 /* | |
| 1440 * Pool export/destroy | |
| 1441 * | |
| 1442 * The act of destroying or exporting a pool is very simple. We make sure there | |
| 1443 * is no more pending I/O and any references to the pool are gone. Then, we | |
| 1444 * update the pool state and sync all the labels to disk, removing the | |
| 1445 * configuration from the cache afterwards. | |
| 1446 */ | |
| 1447 static int | |
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1448 spa_export_common(char *pool, int new_state, nvlist_t **oldconfig) |
| 789 | 1449 { |
| 1450 spa_t *spa; | |
| 1451 | |
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1452 if (oldconfig) |
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1453 *oldconfig = NULL; |
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1454 |
| 789 | 1455 if (!(spa_mode & FWRITE)) |
| 1456 return (EROFS); | |
| 1457 | |
| 1458 mutex_enter(&spa_namespace_lock); | |
| 1459 if ((spa = spa_lookup(pool)) == NULL) { | |
| 1460 mutex_exit(&spa_namespace_lock); | |
| 1461 return (ENOENT); | |
| 1462 } | |
| 1463 | |
| 1464 /* | |
| 1544 | 1465 * Put a hold on the pool, drop the namespace lock, stop async tasks, |
| 1466 * reacquire the namespace lock, and see if we can export. | |
| 1467 */ | |
| 1468 spa_open_ref(spa, FTAG); | |
| 1469 mutex_exit(&spa_namespace_lock); | |
| 1470 spa_async_suspend(spa); | |
| 1471 mutex_enter(&spa_namespace_lock); | |
| 1472 spa_close(spa, FTAG); | |
| 1473 | |
| 1474 /* | |
| 789 | 1475 * The pool will be in core if it's openable, |
| 1476 * in which case we can modify its state. | |
| 1477 */ | |
| 1478 if (spa->spa_state != POOL_STATE_UNINITIALIZED && spa->spa_sync_on) { | |
| 1479 /* | |
| 1480 * Objsets may be open only because they're dirty, so we | |
| 1481 * have to force it to sync before checking spa_refcnt. | |
| 1482 */ | |
| 1483 spa_scrub_suspend(spa); | |
| 1484 txg_wait_synced(spa->spa_dsl_pool, 0); | |
| 1485 | |
| 1544 | 1486 /* |
| 1487 * A pool cannot be exported or destroyed if there are active | |
| 1488 * references. If we are resetting a pool, allow references by | |
| 1489 * fault injection handlers. | |
| 1490 */ | |
| 1491 if (!spa_refcount_zero(spa) || | |
| 1492 (spa->spa_inject_ref != 0 && | |
| 1493 new_state != POOL_STATE_UNINITIALIZED)) { | |
| 789 | 1494 spa_scrub_resume(spa); |
| 1544 | 1495 spa_async_resume(spa); |
| 789 | 1496 mutex_exit(&spa_namespace_lock); |
| 1497 return (EBUSY); | |
| 1498 } | |
| 1499 | |
| 1500 spa_scrub_resume(spa); | |
| 1501 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); | |
| 1502 | |
| 1503 /* | |
| 1504 * We want this to be reflected on every label, | |
| 1505 * so mark them all dirty. spa_unload() will do the | |
| 1506 * final sync that pushes these changes out. | |
| 1507 */ | |
| 1544 | 1508 if (new_state != POOL_STATE_UNINITIALIZED) { |
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1509 spa_config_enter(spa, RW_WRITER, FTAG); |
| 1544 | 1510 spa->spa_state = new_state; |
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1511 spa->spa_final_txg = spa_last_synced_txg(spa) + 1; |
| 1544 | 1512 vdev_config_dirty(spa->spa_root_vdev); |
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1513 spa_config_exit(spa, FTAG); |
| 1544 | 1514 } |
| 789 | 1515 } |
| 1516 | |
| 4451 | 1517 spa_event_notify(spa, NULL, ESC_ZFS_POOL_DESTROY); |
| 1518 | |
| 789 | 1519 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { |
| 1520 spa_unload(spa); | |
| 1521 spa_deactivate(spa); | |
| 1522 } | |
| 1523 | |
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1524 if (oldconfig && spa->spa_config) |
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1525 VERIFY(nvlist_dup(spa->spa_config, oldconfig, 0) == 0); |
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1526 |
| 1544 | 1527 if (new_state != POOL_STATE_UNINITIALIZED) { |
| 1528 spa_remove(spa); | |
| 1529 spa_config_sync(); | |
| 1530 } | |
| 789 | 1531 mutex_exit(&spa_namespace_lock); |
| 1532 | |
| 1533 return (0); | |
| 1534 } | |
| 1535 | |
| 1536 /* | |
| 1537 * Destroy a storage pool. | |
| 1538 */ | |
| 1539 int | |
| 1540 spa_destroy(char *pool) | |
| 1541 { | |
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1542 return (spa_export_common(pool, POOL_STATE_DESTROYED, NULL)); |
| 789 | 1543 } |
| 1544 | |
| 1545 /* | |
| 1546 * Export a storage pool. | |
| 1547 */ | |
| 1548 int | |
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1549 spa_export(char *pool, nvlist_t **oldconfig) |
| 789 | 1550 { |
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1551 return (spa_export_common(pool, POOL_STATE_EXPORTED, oldconfig)); |
| 789 | 1552 } |
| 1553 | |
| 1554 /* | |
| 1544 | 1555 * Similar to spa_export(), this unloads the spa_t without actually removing it |
| 1556 * from the namespace in any way. | |
| 1557 */ | |
| 1558 int | |
| 1559 spa_reset(char *pool) | |
| 1560 { | |
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1561 return (spa_export_common(pool, POOL_STATE_UNINITIALIZED, NULL)); |
| 1544 | 1562 } |
| 1563 | |
| 1564 | |
| 1565 /* | |
| 789 | 1566 * ========================================================================== |
| 1567 * Device manipulation | |
| 1568 * ========================================================================== | |
| 1569 */ | |
| 1570 | |
| 1571 /* | |
| 4527 | 1572 * Add a device to a storage pool. |
| 789 | 1573 */ |
| 1574 int | |
| 1575 spa_vdev_add(spa_t *spa, nvlist_t *nvroot) | |
| 1576 { | |
| 1577 uint64_t txg; | |
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1578 int c, error; |
| 789 | 1579 vdev_t *rvd = spa->spa_root_vdev; |
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1580 vdev_t *vd, *tvd; |
| 2082 | 1581 nvlist_t **spares; |
| 1582 uint_t i, nspares; | |
| 789 | 1583 |
| 1584 txg = spa_vdev_enter(spa); | |
| 1585 | |
| 2082 | 1586 if ((error = spa_config_parse(spa, &vd, nvroot, NULL, 0, |
| 1587 VDEV_ALLOC_ADD)) != 0) | |
| 1588 return (spa_vdev_exit(spa, NULL, txg, error)); | |
| 1589 | |
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1590 spa->spa_pending_vdev = vd; |
| 789 | 1591 |
| 2082 | 1592 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, |
| 1593 &spares, &nspares) != 0) | |
| 1594 nspares = 0; | |
| 1595 | |
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1596 if (vd->vdev_children == 0 && nspares == 0) { |
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1597 spa->spa_pending_vdev = NULL; |
| 2082 | 1598 return (spa_vdev_exit(spa, vd, txg, EINVAL)); |
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1599 } |
| 2082 | 1600 |
| 1601 if (vd->vdev_children != 0) { | |
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1602 if ((error = vdev_create(vd, txg, B_FALSE)) != 0) { |
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1603 spa->spa_pending_vdev = NULL; |
| 2082 | 1604 return (spa_vdev_exit(spa, vd, txg, error)); |
| 1605 } | |
| 1606 } | |
| 1607 | |
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1608 /* |
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1609 * We must validate the spares after checking the children. Otherwise, |
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1610 * vdev_inuse() will blindly overwrite the spare. |
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1611 */ |
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1612 if ((error = spa_validate_spares(spa, nvroot, txg, |
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1613 VDEV_ALLOC_ADD)) != 0) { |
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1614 spa->spa_pending_vdev = NULL; |
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1615 return (spa_vdev_exit(spa, vd, txg, error)); |
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1616 } |
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1617 |
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1618 spa->spa_pending_vdev = NULL; |
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1619 |
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1620 /* |
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1621 * Transfer each new top-level vdev from vd to rvd. |
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1622 */ |
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1623 for (c = 0; c < vd->vdev_children; c++) { |
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1624 tvd = vd->vdev_child[c]; |
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1625 vdev_remove_child(vd, tvd); |
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1626 tvd->vdev_id = rvd->vdev_children; |
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1627 vdev_add_child(rvd, tvd); |
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1628 vdev_config_dirty(tvd); |
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1629 } |
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1630 |
| 2082 | 1631 if (nspares != 0) { |
| 1632 if (spa->spa_sparelist != NULL) { | |
| 1633 nvlist_t **oldspares; | |
| 1634 uint_t oldnspares; | |
| 1635 nvlist_t **newspares; | |
| 1636 | |
| 1637 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 1638 ZPOOL_CONFIG_SPARES, &oldspares, &oldnspares) == 0); | |
| 1639 | |
| 1640 newspares = kmem_alloc(sizeof (void *) * | |
| 1641 (nspares + oldnspares), KM_SLEEP); | |
| 1642 for (i = 0; i < oldnspares; i++) | |
| 1643 VERIFY(nvlist_dup(oldspares[i], | |
| 1644 &newspares[i], KM_SLEEP) == 0); | |
| 1645 for (i = 0; i < nspares; i++) | |
| 1646 VERIFY(nvlist_dup(spares[i], | |
| 1647 &newspares[i + oldnspares], | |
| 1648 KM_SLEEP) == 0); | |
| 1649 | |
| 1650 VERIFY(nvlist_remove(spa->spa_sparelist, | |
| 1651 ZPOOL_CONFIG_SPARES, DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 1652 | |
| 1653 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1654 ZPOOL_CONFIG_SPARES, newspares, | |
| 1655 nspares + oldnspares) == 0); | |
| 1656 for (i = 0; i < oldnspares + nspares; i++) | |
| 1657 nvlist_free(newspares[i]); | |
| 1658 kmem_free(newspares, (oldnspares + nspares) * | |
| 1659 sizeof (void *)); | |
| 1660 } else { | |
| 1661 VERIFY(nvlist_alloc(&spa->spa_sparelist, | |
| 1662 NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 1663 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, | |
| 1664 ZPOOL_CONFIG_SPARES, spares, nspares) == 0); | |
| 1665 } | |
| 1666 | |
| 1667 spa_load_spares(spa); | |
| 1668 spa->spa_sync_spares = B_TRUE; | |
| 789 | 1669 } |
| 1670 | |
| 1671 /* | |
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1672 * We have to be careful when adding new vdevs to an existing pool. |
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1673 * If other threads start allocating from these vdevs before we |
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1674 * sync the config cache, and we lose power, then upon reboot we may |
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1675 * fail to open the pool because there are DVAs that the config cache |
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1676 * can't translate. Therefore, we first add the vdevs without |
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1677 * initializing metaslabs; sync the config cache (via spa_vdev_exit()); |
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1678 * and then let spa_config_update() initialize the new metaslabs. |
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1679 * |
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1680 * spa_load() checks for added-but-not-initialized vdevs, so that |
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1681 * if we lose power at any point in this sequence, the remaining |
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1682 * steps will be completed the next time we load the pool. |
| 789 | 1683 */ |
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1684 (void) spa_vdev_exit(spa, vd, txg, 0); |
|
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1685 |
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1686 mutex_enter(&spa_namespace_lock); |
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1687 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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1688 mutex_exit(&spa_namespace_lock); |
| 789 | 1689 |
|
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1690 return (0); |
| 789 | 1691 } |
| 1692 | |
| 1693 /* | |
| 1694 * Attach a device to a mirror. The arguments are the path to any device | |
| 1695 * in the mirror, and the nvroot for the new device. If the path specifies | |
| 1696 * a device that is not mirrored, we automatically insert the mirror vdev. | |
| 1697 * | |
| 1698 * If 'replacing' is specified, the new device is intended to replace the | |
| 1699 * existing device; in this case the two devices are made into their own | |
| 4451 | 1700 * mirror using the 'replacing' vdev, which is functionally identical to |
| 789 | 1701 * the mirror vdev (it actually reuses all the same ops) but has a few |
| 1702 * extra rules: you can't attach to it after it's been created, and upon | |
| 1703 * completion of resilvering, the first disk (the one being replaced) | |
| 1704 * is automatically detached. | |
| 1705 */ | |
| 1706 int | |
| 1544 | 1707 spa_vdev_attach(spa_t *spa, uint64_t guid, nvlist_t *nvroot, int replacing) |
| 789 | 1708 { |
| 1709 uint64_t txg, open_txg; | |
| 1710 int error; | |
| 1711 vdev_t *rvd = spa->spa_root_vdev; | |
| 1712 vdev_t *oldvd, *newvd, *newrootvd, *pvd, *tvd; | |
| 2082 | 1713 vdev_ops_t *pvops; |
| 4527 | 1714 int is_log; |
| 789 | 1715 |
| 1716 txg = spa_vdev_enter(spa); | |
| 1717 | |
| 1544 | 1718 oldvd = vdev_lookup_by_guid(rvd, guid); |
| 789 | 1719 |
| 1720 if (oldvd == NULL) | |
| 1721 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
| 1722 | |
|
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1723 if (!oldvd->vdev_ops->vdev_op_leaf) |
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1724 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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1725 |
| 789 | 1726 pvd = oldvd->vdev_parent; |
| 1727 | |
| 2082 | 1728 if ((error = spa_config_parse(spa, &newrootvd, nvroot, NULL, 0, |
| 4451 | 1729 VDEV_ALLOC_ADD)) != 0) |
| 1730 return (spa_vdev_exit(spa, NULL, txg, EINVAL)); | |
| 1731 | |
| 1732 if (newrootvd->vdev_children != 1) | |
| 789 | 1733 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); |
| 1734 | |
| 1735 newvd = newrootvd->vdev_child[0]; | |
| 1736 | |
| 1737 if (!newvd->vdev_ops->vdev_op_leaf) | |
| 1738 return (spa_vdev_exit(spa, newrootvd, txg, EINVAL)); | |
| 1739 | |
| 2082 | 1740 if ((error = vdev_create(newrootvd, txg, replacing)) != 0) |
| 789 | 1741 return (spa_vdev_exit(spa, newrootvd, txg, error)); |
| 1742 | |
| 4527 | 1743 /* |
| 1744 * Spares can't replace logs | |
| 1745 */ | |
| 1746 is_log = oldvd->vdev_islog; | |
| 1747 if (is_log && newvd->vdev_isspare) | |
| 1748 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1749 | |
| 2082 | 1750 if (!replacing) { |
| 1751 /* | |
| 1752 * For attach, the only allowable parent is a mirror or the root | |
| 1753 * vdev. | |
| 1754 */ | |
| 1755 if (pvd->vdev_ops != &vdev_mirror_ops && | |
| 1756 pvd->vdev_ops != &vdev_root_ops) | |
| 1757 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1758 | |
| 1759 pvops = &vdev_mirror_ops; | |
| 1760 } else { | |
| 1761 /* | |
| 1762 * Active hot spares can only be replaced by inactive hot | |
| 1763 * spares. | |
| 1764 */ | |
| 1765 if (pvd->vdev_ops == &vdev_spare_ops && | |
| 1766 pvd->vdev_child[1] == oldvd && | |
| 1767 !spa_has_spare(spa, newvd->vdev_guid)) | |
| 1768 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
| 1769 | |
| 1770 /* | |
| 1771 * If the source is a hot spare, and the parent isn't already a | |
| 1772 * spare, then we want to create a new hot spare. Otherwise, we | |
|
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1773 * want to create a replacing vdev. The user is not allowed to |
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1774 * attach to a spared vdev child unless the 'isspare' state is |
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1775 * the same (spare replaces spare, non-spare replaces |
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1776 * non-spare). |
| 2082 | 1777 */ |
| 1778 if (pvd->vdev_ops == &vdev_replacing_ops) | |
| 1779 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); | |
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1780 else if (pvd->vdev_ops == &vdev_spare_ops && |
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1781 newvd->vdev_isspare != oldvd->vdev_isspare) |
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1782 return (spa_vdev_exit(spa, newrootvd, txg, ENOTSUP)); |
| 2082 | 1783 else if (pvd->vdev_ops != &vdev_spare_ops && |
| 1784 newvd->vdev_isspare) | |
| 1785 pvops = &vdev_spare_ops; | |
| 1786 else | |
| 1787 pvops = &vdev_replacing_ops; | |
| 1788 } | |
| 1789 | |
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1790 /* |
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1791 * Compare the new device size with the replaceable/attachable |
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1792 * device size. |
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1793 */ |
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1794 if (newvd->vdev_psize < vdev_get_rsize(oldvd)) |
| 789 | 1795 return (spa_vdev_exit(spa, newrootvd, txg, EOVERFLOW)); |
| 1796 | |
| 1732 | 1797 /* |
| 1798 * The new device cannot have a higher alignment requirement | |
| 1799 * than the top-level vdev. | |
| 1800 */ | |
| 1801 if (newvd->vdev_ashift > oldvd->vdev_top->vdev_ashift) | |
| 789 | 1802 return (spa_vdev_exit(spa, newrootvd, txg, EDOM)); |
| 1803 | |
| 1804 /* | |
| 1805 * If this is an in-place replacement, update oldvd's path and devid | |
| 1806 * to make it distinguishable from newvd, and unopenable from now on. | |
| 1807 */ | |
| 1808 if (strcmp(oldvd->vdev_path, newvd->vdev_path) == 0) { | |
| 1809 spa_strfree(oldvd->vdev_path); | |
| 1810 oldvd->vdev_path = kmem_alloc(strlen(newvd->vdev_path) + 5, | |
| 1811 KM_SLEEP); | |
| 1812 (void) sprintf(oldvd->vdev_path, "%s/%s", | |
| 1813 newvd->vdev_path, "old"); | |
| 1814 if (oldvd->vdev_devid != NULL) { | |
| 1815 spa_strfree(oldvd->vdev_devid); | |
| 1816 oldvd->vdev_devid = NULL; | |
| 1817 } | |
| 1818 } | |
| 1819 | |
| 1820 /* | |
| 2082 | 1821 * If the parent is not a mirror, or if we're replacing, insert the new |
| 1822 * mirror/replacing/spare vdev above oldvd. | |
| 789 | 1823 */ |
| 1824 if (pvd->vdev_ops != pvops) | |
| 1825 pvd = vdev_add_parent(oldvd, pvops); | |
| 1826 | |
| 1827 ASSERT(pvd->vdev_top->vdev_parent == rvd); | |
| 1828 ASSERT(pvd->vdev_ops == pvops); | |
| 1829 ASSERT(oldvd->vdev_parent == pvd); | |
| 1830 | |
| 1831 /* | |
| 1832 * Extract the new device from its root and add it to pvd. | |
| 1833 */ | |
| 1834 vdev_remove_child(newrootvd, newvd); | |
| 1835 newvd->vdev_id = pvd->vdev_children; | |
| 1836 vdev_add_child(pvd, newvd); | |
| 1837 | |
| 1544 | 1838 /* |
| 1839 * If newvd is smaller than oldvd, but larger than its rsize, | |
| 1840 * the addition of newvd may have decreased our parent's asize. | |
| 1841 */ | |
| 1842 pvd->vdev_asize = MIN(pvd->vdev_asize, newvd->vdev_asize); | |
| 1843 | |
| 789 | 1844 tvd = newvd->vdev_top; |
| 1845 ASSERT(pvd->vdev_top == tvd); | |
| 1846 ASSERT(tvd->vdev_parent == rvd); | |
| 1847 | |
| 1848 vdev_config_dirty(tvd); | |
| 1849 | |
| 1850 /* | |
| 1851 * Set newvd's DTL to [TXG_INITIAL, open_txg]. It will propagate | |
| 1852 * upward when spa_vdev_exit() calls vdev_dtl_reassess(). | |
| 1853 */ | |
| 1854 open_txg = txg + TXG_CONCURRENT_STATES - 1; | |
| 1855 | |
| 1856 mutex_enter(&newvd->vdev_dtl_lock); | |
| 1857 space_map_add(&newvd->vdev_dtl_map, TXG_INITIAL, | |
| 1858 open_txg - TXG_INITIAL + 1); | |
| 1859 mutex_exit(&newvd->vdev_dtl_lock); | |
| 1860 | |
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1861 if (newvd->vdev_isspare) |
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1862 spa_spare_activate(newvd); |
| 1544 | 1863 |
| 789 | 1864 /* |
| 1865 * Mark newvd's DTL dirty in this txg. | |
| 1866 */ | |
| 1732 | 1867 vdev_dirty(tvd, VDD_DTL, newvd, txg); |
| 789 | 1868 |
| 1869 (void) spa_vdev_exit(spa, newrootvd, open_txg, 0); | |
| 1870 | |
| 1871 /* | |
| 4451 | 1872 * Kick off a resilver to update newvd. We need to grab the namespace |
| 1873 * lock because spa_scrub() needs to post a sysevent with the pool name. | |
| 789 | 1874 */ |
| 4451 | 1875 mutex_enter(&spa_namespace_lock); |
| 789 | 1876 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); |
| 4451 | 1877 mutex_exit(&spa_namespace_lock); |
| 789 | 1878 |
| 1879 return (0); | |
| 1880 } | |
| 1881 | |
| 1882 /* | |
| 1883 * Detach a device from a mirror or replacing vdev. | |
| 1884 * If 'replace_done' is specified, only detach if the parent | |
| 1885 * is a replacing vdev. | |
| 1886 */ | |
| 1887 int | |
| 1544 | 1888 spa_vdev_detach(spa_t *spa, uint64_t guid, int replace_done) |
| 789 | 1889 { |
| 1890 uint64_t txg; | |
| 1891 int c, t, error; | |
| 1892 vdev_t *rvd = spa->spa_root_vdev; | |
| 1893 vdev_t *vd, *pvd, *cvd, *tvd; | |
| 2082 | 1894 boolean_t unspare = B_FALSE; |
| 1895 uint64_t unspare_guid; | |
| 789 | 1896 |
| 1897 txg = spa_vdev_enter(spa); | |
| 1898 | |
| 1544 | 1899 vd = vdev_lookup_by_guid(rvd, guid); |
| 789 | 1900 |
| 1901 if (vd == NULL) | |
| 1902 return (spa_vdev_exit(spa, NULL, txg, ENODEV)); | |
| 1903 | |
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1904 if (!vd->vdev_ops->vdev_op_leaf) |
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1905 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
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1906 |
| 789 | 1907 pvd = vd->vdev_parent; |
| 1908 | |
| 1909 /* | |
| 1910 * If replace_done is specified, only remove this device if it's | |
| 2082 | 1911 * the first child of a replacing vdev. For the 'spare' vdev, either |
| 1912 * disk can be removed. | |
| 789 | 1913 */ |
| 2082 | 1914 if (replace_done) { |
| 1915 if (pvd->vdev_ops == &vdev_replacing_ops) { | |
| 1916 if (vd->vdev_id != 0) | |
| 1917 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
| 1918 } else if (pvd->vdev_ops != &vdev_spare_ops) { | |
| 1919 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); | |
| 1920 } | |
| 1921 } | |
| 1922 | |
| 1923 ASSERT(pvd->vdev_ops != &vdev_spare_ops || | |
| 1924 spa_version(spa) >= ZFS_VERSION_SPARES); | |
| 789 | 1925 |
| 1926 /* | |
| 2082 | 1927 * Only mirror, replacing, and spare vdevs support detach. |
| 789 | 1928 */ |
| 1929 if (pvd->vdev_ops != &vdev_replacing_ops && | |
| 2082 | 1930 pvd->vdev_ops != &vdev_mirror_ops && |
| 1931 pvd->vdev_ops != &vdev_spare_ops) | |
| 789 | 1932 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
| 1933 | |
| 1934 /* | |
| 1935 * If there's only one replica, you can't detach it. | |
| 1936 */ | |
| 1937 if (pvd->vdev_children <= 1) | |
| 1938 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); | |
| 1939 | |
| 1940 /* | |
| 1941 * If all siblings have non-empty DTLs, this device may have the only | |
| 1942 * valid copy of the data, which means we cannot safely detach it. | |
| 1943 * | |
| 1944 * XXX -- as in the vdev_offline() case, we really want a more | |
| 1945 * precise DTL check. | |
| 1946 */ | |
| 1947 for (c = 0; c < pvd->vdev_children; c++) { | |
| 1948 uint64_t dirty; | |
| 1949 | |
| 1950 cvd = pvd->vdev_child[c]; | |
| 1951 if (cvd == vd) | |
| 1952 continue; | |
| 1953 if (vdev_is_dead(cvd)) | |
| 1954 continue; | |
| 1955 mutex_enter(&cvd->vdev_dtl_lock); | |
| 1956 dirty = cvd->vdev_dtl_map.sm_space | | |
| 1957 cvd->vdev_dtl_scrub.sm_space; | |
| 1958 mutex_exit(&cvd->vdev_dtl_lock); | |
| 1959 if (!dirty) | |
| 1960 break; | |
| 1961 } | |
| 2082 | 1962 |
| 1963 /* | |
| 1964 * If we are a replacing or spare vdev, then we can always detach the | |
| 1965 * latter child, as that is how one cancels the operation. | |
| 1966 */ | |
| 1967 if ((pvd->vdev_ops == &vdev_mirror_ops || vd->vdev_id != 1) && | |
| 1968 c == pvd->vdev_children) | |
| 789 | 1969 return (spa_vdev_exit(spa, NULL, txg, EBUSY)); |
| 1970 | |
| 1971 /* | |
| 2082 | 1972 * If we are detaching the original disk from a spare, then it implies |
| 1973 * that the spare should become a real disk, and be removed from the | |
| 1974 * active spare list for the pool. | |
| 1975 */ | |
| 1976 if (pvd->vdev_ops == &vdev_spare_ops && | |
| 1977 vd->vdev_id == 0) | |
| 1978 unspare = B_TRUE; | |
| 1979 | |
| 1980 /* | |
| 789 | 1981 * Erase the disk labels so the disk can be used for other things. |
| 1982 * This must be done after all other error cases are handled, | |
| 1983 * but before we disembowel vd (so we can still do I/O to it). | |
| 1984 * But if we can't do it, don't treat the error as fatal -- | |
| 1985 * it may be that the unwritability of the disk is the reason | |
| 1986 * it's being detached! | |
| 1987 */ | |
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1988 error = vdev_label_init(vd, 0, VDEV_LABEL_REMOVE); |
| 789 | 1989 |
| 1990 /* | |
| 1991 * Remove vd from its parent and compact the parent's children. | |
| 1992 */ | |
| 1993 vdev_remove_child(pvd, vd); | |
| 1994 vdev_compact_children(pvd); | |
| 1995 | |
| 1996 /* | |
| 1997 * Remember one of the remaining children so we can get tvd below. | |
| 1998 */ | |
| 1999 cvd = pvd->vdev_child[0]; | |
| 2000 | |
| 2001 /* | |
| 2082 | 2002 * If we need to remove the remaining child from the list of hot spares, |
| 2003 * do it now, marking the vdev as no longer a spare in the process. We | |
| 2004 * must do this before vdev_remove_parent(), because that can change the | |
| 2005 * GUID if it creates a new toplevel GUID. | |
| 2006 */ | |
| 2007 if (unspare) { | |
| 2008 ASSERT(cvd->vdev_isspare); | |
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2009 spa_spare_remove(cvd); |
| 2082 | 2010 unspare_guid = cvd->vdev_guid; |
| 2011 } | |
| 2012 | |
| 2013 /* | |
| 789 | 2014 * If the parent mirror/replacing vdev only has one child, |
| 2015 * the parent is no longer needed. Remove it from the tree. | |
| 2016 */ | |
| 2017 if (pvd->vdev_children == 1) | |
| 2018 vdev_remove_parent(cvd); | |
| 2019 | |
| 2020 /* | |
| 2021 * We don't set tvd until now because the parent we just removed | |
| 2022 * may have been the previous top-level vdev. | |
| 2023 */ | |
| 2024 tvd = cvd->vdev_top; | |
| 2025 ASSERT(tvd->vdev_parent == rvd); | |
| 2026 | |
| 2027 /* | |
|
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2028 * Reevaluate the parent vdev state. |
| 789 | 2029 */ |
| 4451 | 2030 vdev_propagate_state(cvd); |
| 789 | 2031 |
| 2032 /* | |
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2033 * If the device we just detached was smaller than the others, it may be |
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2034 * possible to add metaslabs (i.e. grow the pool). vdev_metaslab_init() |
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2035 * can't fail because the existing metaslabs are already in core, so |
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2036 * there's nothing to read from disk. |
| 789 | 2037 */ |
| 1732 | 2038 VERIFY(vdev_metaslab_init(tvd, txg) == 0); |
| 789 | 2039 |
| 2040 vdev_config_dirty(tvd); | |
| 2041 | |
| 2042 /* | |
|
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2043 * Mark vd's DTL as dirty in this txg. vdev_dtl_sync() will see that |
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2044 * vd->vdev_detached is set and free vd's DTL object in syncing context. |
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2045 * But first make sure we're not on any *other* txg's DTL list, to |
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2046 * prevent vd from being accessed after it's freed. |
| 789 | 2047 */ |
| 2048 for (t = 0; t < TXG_SIZE; t++) | |
| 2049 (void) txg_list_remove_this(&tvd->vdev_dtl_list, vd, t); | |
| 1732 | 2050 vd->vdev_detached = B_TRUE; |
| 2051 vdev_dirty(tvd, VDD_DTL, vd, txg); | |
| 789 | 2052 |
| 4451 | 2053 spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE); |
| 2054 | |
| 2082 | 2055 error = spa_vdev_exit(spa, vd, txg, 0); |
| 2056 | |
| 2057 /* | |
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2058 * If this was the removal of the original device in a hot spare vdev, |
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2059 * then we want to go through and remove the device from the hot spare |
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2060 * list of every other pool. |
| 2082 | 2061 */ |
| 2062 if (unspare) { | |
| 2063 spa = NULL; | |
| 2064 mutex_enter(&spa_namespace_lock); | |
| 2065 while ((spa = spa_next(spa)) != NULL) { | |
| 2066 if (spa->spa_state != POOL_STATE_ACTIVE) | |
| 2067 continue; | |
| 2068 | |
| 2069 (void) spa_vdev_remove(spa, unspare_guid, B_TRUE); | |
| 2070 } | |
| 2071 mutex_exit(&spa_namespace_lock); | |
| 2072 } | |
| 2073 | |
| 2074 return (error); | |
| 2075 } | |
| 2076 | |
| 2077 /* | |
| 2078 * Remove a device from the pool. Currently, this supports removing only hot | |
| 2079 * spares. | |
| 2080 */ | |
| 2081 int | |
| 2082 spa_vdev_remove(spa_t *spa, uint64_t guid, boolean_t unspare) | |
| 2083 { | |
| 2084 vdev_t *vd; | |
| 2085 nvlist_t **spares, *nv, **newspares; | |
| 2086 uint_t i, j, nspares; | |
| 2087 int ret = 0; | |
| 2088 | |
| 2089 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 2090 | |
| 2091 vd = spa_lookup_by_guid(spa, guid); | |
| 2092 | |
| 2093 nv = NULL; | |
| 2094 if (spa->spa_spares != NULL && | |
| 2095 nvlist_lookup_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 2096 &spares, &nspares) == 0) { | |
| 2097 for (i = 0; i < nspares; i++) { | |
| 2098 uint64_t theguid; | |
| 2099 | |
| 2100 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 2101 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
| 2102 if (theguid == guid) { | |
| 2103 nv = spares[i]; | |
| 2104 break; | |
| 2105 } | |
| 2106 } | |
| 2107 } | |
| 2108 | |
| 2109 /* | |
| 2110 * We only support removing a hot spare, and only if it's not currently | |
| 2111 * in use in this pool. | |
| 2112 */ | |
| 2113 if (nv == NULL && vd == NULL) { | |
| 2114 ret = ENOENT; | |
| 2115 goto out; | |
| 2116 } | |
| 2117 | |
| 2118 if (nv == NULL && vd != NULL) { | |
| 2119 ret = ENOTSUP; | |
| 2120 goto out; | |
| 2121 } | |
| 2122 | |
| 2123 if (!unspare && nv != NULL && vd != NULL) { | |
| 2124 ret = EBUSY; | |
| 2125 goto out; | |
| 2126 } | |
| 2127 | |
| 2128 if (nspares == 1) { | |
| 2129 newspares = NULL; | |
| 2130 } else { | |
| 2131 newspares = kmem_alloc((nspares - 1) * sizeof (void *), | |
| 2132 KM_SLEEP); | |
| 2133 for (i = 0, j = 0; i < nspares; i++) { | |
| 2134 if (spares[i] != nv) | |
| 2135 VERIFY(nvlist_dup(spares[i], | |
| 2136 &newspares[j++], KM_SLEEP) == 0); | |
| 2137 } | |
| 2138 } | |
| 2139 | |
| 2140 VERIFY(nvlist_remove(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 2141 DATA_TYPE_NVLIST_ARRAY) == 0); | |
| 2142 VERIFY(nvlist_add_nvlist_array(spa->spa_sparelist, ZPOOL_CONFIG_SPARES, | |
| 2143 newspares, nspares - 1) == 0); | |
| 2144 for (i = 0; i < nspares - 1; i++) | |
| 2145 nvlist_free(newspares[i]); | |
| 2146 kmem_free(newspares, (nspares - 1) * sizeof (void *)); | |
| 2147 spa_load_spares(spa); | |
| 2148 spa->spa_sync_spares = B_TRUE; | |
| 2149 | |
| 2150 out: | |
| 2151 spa_config_exit(spa, FTAG); | |
| 2152 | |
| 2153 return (ret); | |
| 789 | 2154 } |
| 2155 | |
| 2156 /* | |
| 4451 | 2157 * Find any device that's done replacing, or a vdev marked 'unspare' that's |
| 2158 * current spared, so we can detach it. | |
| 789 | 2159 */ |
| 1544 | 2160 static vdev_t * |
| 4451 | 2161 spa_vdev_resilver_done_hunt(vdev_t *vd) |
| 789 | 2162 { |
| 1544 | 2163 vdev_t *newvd, *oldvd; |
| 789 | 2164 int c; |
| 2165 | |
| 1544 | 2166 for (c = 0; c < vd->vdev_children; c++) { |
| 4451 | 2167 oldvd = spa_vdev_resilver_done_hunt(vd->vdev_child[c]); |
| 1544 | 2168 if (oldvd != NULL) |
| 2169 return (oldvd); | |
| 2170 } | |
| 789 | 2171 |
| 4451 | 2172 /* |
| 2173 * Check for a completed replacement. | |
| 2174 */ | |
| 789 | 2175 if (vd->vdev_ops == &vdev_replacing_ops && vd->vdev_children == 2) { |
| 1544 | 2176 oldvd = vd->vdev_child[0]; |
| 2177 newvd = vd->vdev_child[1]; | |
| 789 | 2178 |
| 1544 | 2179 mutex_enter(&newvd->vdev_dtl_lock); |
| 2180 if (newvd->vdev_dtl_map.sm_space == 0 && | |
| 2181 newvd->vdev_dtl_scrub.sm_space == 0) { | |
| 2182 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2183 return (oldvd); | |
| 2184 } | |
| 2185 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2186 } | |
| 789 | 2187 |
| 4451 | 2188 /* |
| 2189 * Check for a completed resilver with the 'unspare' flag set. | |
| 2190 */ | |
| 2191 if (vd->vdev_ops == &vdev_spare_ops && vd->vdev_children == 2) { | |
| 2192 newvd = vd->vdev_child[0]; | |
| 2193 oldvd = vd->vdev_child[1]; | |
| 2194 | |
| 2195 mutex_enter(&newvd->vdev_dtl_lock); | |
| 2196 if (newvd->vdev_unspare && | |
| 2197 newvd->vdev_dtl_map.sm_space == 0 && | |
| 2198 newvd->vdev_dtl_scrub.sm_space == 0) { | |
| 2199 newvd->vdev_unspare = 0; | |
| 2200 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2201 return (oldvd); | |
| 2202 } | |
| 2203 mutex_exit(&newvd->vdev_dtl_lock); | |
| 2204 } | |
| 2205 | |
| 1544 | 2206 return (NULL); |
| 789 | 2207 } |
| 2208 | |
| 1544 | 2209 static void |
| 4451 | 2210 spa_vdev_resilver_done(spa_t *spa) |
| 789 | 2211 { |
| 1544 | 2212 vdev_t *vd; |
| 2082 | 2213 vdev_t *pvd; |
| 1544 | 2214 uint64_t guid; |
| 2082 | 2215 uint64_t pguid = 0; |
| 789 | 2216 |
| 1544 | 2217 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2218 |
| 4451 | 2219 while ((vd = spa_vdev_resilver_done_hunt(spa->spa_root_vdev)) != NULL) { |
| 1544 | 2220 guid = vd->vdev_guid; |
| 2082 | 2221 /* |
| 2222 * If we have just finished replacing a hot spared device, then | |
| 2223 * we need to detach the parent's first child (the original hot | |
| 2224 * spare) as well. | |
| 2225 */ | |
| 2226 pvd = vd->vdev_parent; | |
| 2227 if (pvd->vdev_parent->vdev_ops == &vdev_spare_ops && | |
| 2228 pvd->vdev_id == 0) { | |
| 2229 ASSERT(pvd->vdev_ops == &vdev_replacing_ops); | |
| 2230 ASSERT(pvd->vdev_parent->vdev_children == 2); | |
| 2231 pguid = pvd->vdev_parent->vdev_child[1]->vdev_guid; | |
| 2232 } | |
| 1544 | 2233 spa_config_exit(spa, FTAG); |
| 2234 if (spa_vdev_detach(spa, guid, B_TRUE) != 0) | |
| 2235 return; | |
| 2082 | 2236 if (pguid != 0 && spa_vdev_detach(spa, pguid, B_TRUE) != 0) |
| 2237 return; | |
| 1544 | 2238 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 2239 } |
| 2240 | |
| 1544 | 2241 spa_config_exit(spa, FTAG); |
| 789 | 2242 } |
| 2243 | |
| 2244 /* | |
|
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2245 * Update the stored path for this vdev. Dirty the vdev configuration, relying |
|
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2246 * on spa_vdev_enter/exit() to synchronize the labels and cache. |
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2247 */ |
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2248 int |
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2249 spa_vdev_setpath(spa_t *spa, uint64_t guid, const char *newpath) |
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2250 { |
|
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2251 vdev_t *rvd, *vd; |
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2252 uint64_t txg; |
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2253 |
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2254 rvd = spa->spa_root_vdev; |
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2255 |
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2256 txg = spa_vdev_enter(spa); |
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2257 |
| 2082 | 2258 if ((vd = vdev_lookup_by_guid(rvd, guid)) == NULL) { |
| 2259 /* | |
| 2260 * Determine if this is a reference to a hot spare. In that | |
| 2261 * case, update the path as stored in the spare list. | |
| 2262 */ | |
| 2263 nvlist_t **spares; | |
| 2264 uint_t i, nspares; | |
| 2265 if (spa->spa_sparelist != NULL) { | |
| 2266 VERIFY(nvlist_lookup_nvlist_array(spa->spa_sparelist, | |
| 2267 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0); | |
| 2268 for (i = 0; i < nspares; i++) { | |
| 2269 uint64_t theguid; | |
| 2270 VERIFY(nvlist_lookup_uint64(spares[i], | |
| 2271 ZPOOL_CONFIG_GUID, &theguid) == 0); | |
| 2272 if (theguid == guid) | |
| 2273 break; | |
| 2274 } | |
| 2275 | |
| 2276 if (i == nspares) | |
| 2277 return (spa_vdev_exit(spa, NULL, txg, ENOENT)); | |
| 2278 | |
| 2279 VERIFY(nvlist_add_string(spares[i], | |
| 2280 ZPOOL_CONFIG_PATH, newpath) == 0); | |
| 2281 spa_load_spares(spa); | |
| 2282 spa->spa_sync_spares = B_TRUE; | |
| 2283 return (spa_vdev_exit(spa, NULL, txg, 0)); | |
| 2284 } else { | |
| 2285 return (spa_vdev_exit(spa, NULL, txg, ENOENT)); | |
| 2286 } | |
| 2287 } | |
|
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2288 |
|
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2289 if (!vd->vdev_ops->vdev_op_leaf) |
|
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2290 return (spa_vdev_exit(spa, NULL, txg, ENOTSUP)); |
|
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2291 |
|
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2292 spa_strfree(vd->vdev_path); |
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2293 vd->vdev_path = spa_strdup(newpath); |
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2294 |
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2295 vdev_config_dirty(vd->vdev_top); |
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2296 |
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2297 return (spa_vdev_exit(spa, NULL, txg, 0)); |
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2298 } |
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2299 |
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2300 /* |
| 789 | 2301 * ========================================================================== |
| 2302 * SPA Scrubbing | |
| 2303 * ========================================================================== | |
| 2304 */ | |
| 2305 | |
| 2306 static void | |
| 2307 spa_scrub_io_done(zio_t *zio) | |
| 2308 { | |
| 2309 spa_t *spa = zio->io_spa; | |
| 2310 | |
|
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2311 arc_data_buf_free(zio->io_data, zio->io_size); |
| 789 | 2312 |
| 2313 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2314 if (zio->io_error && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) { |
|
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2315 vdev_t *vd = zio->io_vd ? zio->io_vd : spa->spa_root_vdev; |
| 789 | 2316 spa->spa_scrub_errors++; |
| 2317 mutex_enter(&vd->vdev_stat_lock); | |
| 2318 vd->vdev_stat.vs_scrub_errors++; | |
| 2319 mutex_exit(&vd->vdev_stat_lock); | |
| 2320 } | |
|
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2321 |
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2322 if (--spa->spa_scrub_inflight < spa->spa_scrub_maxinflight) |
| 1544 | 2323 cv_broadcast(&spa->spa_scrub_io_cv); |
|
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2324 |
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2325 ASSERT(spa->spa_scrub_inflight >= 0); |
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2326 |
| 1544 | 2327 mutex_exit(&spa->spa_scrub_lock); |
| 789 | 2328 } |
| 2329 | |
| 2330 static void | |
| 1544 | 2331 spa_scrub_io_start(spa_t *spa, blkptr_t *bp, int priority, int flags, |
| 2332 zbookmark_t *zb) | |
| 789 | 2333 { |
| 2334 size_t size = BP_GET_LSIZE(bp); | |
|
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2335 void *data; |
| 789 | 2336 |
| 2337 mutex_enter(&spa->spa_scrub_lock); | |
|
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2338 /* |
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2339 * Do not give too much work to vdev(s). |
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2340 */ |
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2341 while (spa->spa_scrub_inflight >= spa->spa_scrub_maxinflight) { |
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2342 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); |
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2343 } |
| 789 | 2344 spa->spa_scrub_inflight++; |
| 2345 mutex_exit(&spa->spa_scrub_lock); | |
| 2346 | |
|
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2347 data = arc_data_buf_alloc(size); |
|
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2348 |
| 1544 | 2349 if (zb->zb_level == -1 && BP_GET_TYPE(bp) != DMU_OT_OBJSET) |
| 2350 flags |= ZIO_FLAG_SPECULATIVE; /* intent log block */ | |
| 2351 | |
|
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2352 flags |= ZIO_FLAG_SCRUB_THREAD | ZIO_FLAG_CANFAIL; |
| 1544 | 2353 |
| 789 | 2354 zio_nowait(zio_read(NULL, spa, bp, data, size, |
| 1544 | 2355 spa_scrub_io_done, NULL, priority, flags, zb)); |
| 789 | 2356 } |
| 2357 | |
| 2358 /* ARGSUSED */ | |
| 2359 static int | |
| 2360 spa_scrub_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) | |
| 2361 { | |
| 2362 blkptr_t *bp = &bc->bc_blkptr; | |
|
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2363 vdev_t *vd = spa->spa_root_vdev; |
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2364 dva_t *dva = bp->blk_dva; |
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2365 int needs_resilver = B_FALSE; |
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2366 int d; |
| 789 | 2367 |
|
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2368 if (bc->bc_errno) { |
| 789 | 2369 /* |
| 2370 * We can't scrub this block, but we can continue to scrub | |
| 2371 * the rest of the pool. Note the error and move along. | |
| 2372 */ | |
| 2373 mutex_enter(&spa->spa_scrub_lock); | |
| 2374 spa->spa_scrub_errors++; | |
| 2375 mutex_exit(&spa->spa_scrub_lock); | |
| 2376 | |
|
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2377 mutex_enter(&vd->vdev_stat_lock); |
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2378 vd->vdev_stat.vs_scrub_errors++; |
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2379 mutex_exit(&vd->vdev_stat_lock); |
| 789 | 2380 |
| 2381 return (ERESTART); | |
| 2382 } | |
| 2383 | |
| 2384 ASSERT(bp->blk_birth < spa->spa_scrub_maxtxg); | |
| 2385 | |
|
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2386 for (d = 0; d < BP_GET_NDVAS(bp); d++) { |
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2387 vd = vdev_lookup_top(spa, DVA_GET_VDEV(&dva[d])); |
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2388 |
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2389 ASSERT(vd != NULL); |
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2390 |
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2391 /* |
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2392 * Keep track of how much data we've examined so that |
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2393 * zpool(1M) status can make useful progress reports. |
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2394 */ |
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2395 mutex_enter(&vd->vdev_stat_lock); |
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2396 vd->vdev_stat.vs_scrub_examined += DVA_GET_ASIZE(&dva[d]); |
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2397 mutex_exit(&vd->vdev_stat_lock); |
| 789 | 2398 |
|
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2399 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER) { |
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2400 if (DVA_GET_GANG(&dva[d])) { |
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2401 /* |
|
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2402 * Gang members may be spread across multiple |
|
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2403 * vdevs, so the best we can do is look at the |
|
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2404 * pool-wide DTL. |
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2405 * XXX -- it would be better to change our |
|
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2406 * allocation policy to ensure that this can't |
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2407 * happen. |
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2408 */ |
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2409 vd = spa->spa_root_vdev; |
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2410 } |
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2411 if (vdev_dtl_contains(&vd->vdev_dtl_map, |
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2412 bp->blk_birth, 1)) |
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2413 needs_resilver = B_TRUE; |
| 789 | 2414 } |
|
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2415 } |
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2416 |
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2417 if (spa->spa_scrub_type == POOL_SCRUB_EVERYTHING) |
| 789 | 2418 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_SCRUB, |
| 1544 | 2419 ZIO_FLAG_SCRUB, &bc->bc_bookmark); |
|
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2420 else if (needs_resilver) |
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2421 spa_scrub_io_start(spa, bp, ZIO_PRIORITY_RESILVER, |
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2422 ZIO_FLAG_RESILVER, &bc->bc_bookmark); |
| 789 | 2423 |
| 2424 return (0); | |
| 2425 } | |
| 2426 | |
| 2427 static void | |
| 2428 spa_scrub_thread(spa_t *spa) | |
| 2429 { | |
| 2430 callb_cpr_t cprinfo; | |
| 2431 traverse_handle_t *th = spa->spa_scrub_th; | |
| 2432 vdev_t *rvd = spa->spa_root_vdev; | |
| 2433 pool_scrub_type_t scrub_type = spa->spa_scrub_type; | |
| 2434 int error = 0; | |
| 2435 boolean_t complete; | |
| 2436 | |
| 2437 CALLB_CPR_INIT(&cprinfo, &spa->spa_scrub_lock, callb_generic_cpr, FTAG); | |
| 2438 | |
|
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2439 /* |
|
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2440 * If we're restarting due to a snapshot create/delete, |
|
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2441 * wait for that to complete. |
|
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2442 */ |
|
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2443 txg_wait_synced(spa_get_dsl(spa), 0); |
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2444 |
| 1544 | 2445 dprintf("start %s mintxg=%llu maxtxg=%llu\n", |
| 2446 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
| 2447 spa->spa_scrub_mintxg, spa->spa_scrub_maxtxg); | |
| 2448 | |
| 2449 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 2450 vdev_reopen(rvd); /* purge all vdev caches */ | |
| 789 | 2451 vdev_config_dirty(rvd); /* rewrite all disk labels */ |
| 2452 vdev_scrub_stat_update(rvd, scrub_type, B_FALSE); | |
| 1544 | 2453 spa_config_exit(spa, FTAG); |
| 789 | 2454 |
| 2455 mutex_enter(&spa->spa_scrub_lock); | |
| 2456 spa->spa_scrub_errors = 0; | |
| 2457 spa->spa_scrub_active = 1; | |
| 1544 | 2458 ASSERT(spa->spa_scrub_inflight == 0); |
| 789 | 2459 |
| 2460 while (!spa->spa_scrub_stop) { | |
| 2461 CALLB_CPR_SAFE_BEGIN(&cprinfo); | |
| 1544 | 2462 while (spa->spa_scrub_suspended) { |
| 789 | 2463 spa->spa_scrub_active = 0; |
| 2464 cv_broadcast(&spa->spa_scrub_cv); | |
| 2465 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2466 spa->spa_scrub_active = 1; | |
| 2467 } | |
| 2468 CALLB_CPR_SAFE_END(&cprinfo, &spa->spa_scrub_lock); | |
| 2469 | |
| 2470 if (spa->spa_scrub_restart_txg != 0) | |
| 2471 break; | |
| 2472 | |
| 2473 mutex_exit(&spa->spa_scrub_lock); | |
| 2474 error = traverse_more(th); | |
| 2475 mutex_enter(&spa->spa_scrub_lock); | |
| 2476 if (error != EAGAIN) | |
| 2477 break; | |
| 2478 } | |
| 2479 | |
| 2480 while (spa->spa_scrub_inflight) | |
| 2481 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 2482 | |
|
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2483 spa->spa_scrub_active = 0; |
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2484 cv_broadcast(&spa->spa_scrub_cv); |
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2485 |
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2486 mutex_exit(&spa->spa_scrub_lock); |
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2487 |
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2488 spa_config_enter(spa, RW_WRITER, FTAG); |
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2489 |
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2490 mutex_enter(&spa->spa_scrub_lock); |
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2491 |
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2492 /* |
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2493 * Note: we check spa_scrub_restart_txg under both spa_scrub_lock |
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2494 * AND the spa config lock to synchronize with any config changes |
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2495 * that revise the DTLs under spa_vdev_enter() / spa_vdev_exit(). |
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2496 */ |
| 789 | 2497 if (spa->spa_scrub_restart_txg != 0) |
| 2498 error = ERESTART; | |
| 2499 | |
| 1544 | 2500 if (spa->spa_scrub_stop) |
| 2501 error = EINTR; | |
| 2502 | |
| 789 | 2503 /* |
| 1544 | 2504 * Even if there were uncorrectable errors, we consider the scrub |
| 2505 * completed. The downside is that if there is a transient error during | |
| 2506 * a resilver, we won't resilver the data properly to the target. But | |
| 2507 * if the damage is permanent (more likely) we will resilver forever, | |
| 2508 * which isn't really acceptable. Since there is enough information for | |
| 2509 * the user to know what has failed and why, this seems like a more | |
| 2510 * tractable approach. | |
| 789 | 2511 */ |
| 1544 | 2512 complete = (error == 0); |
| 789 | 2513 |
| 1544 | 2514 dprintf("end %s to maxtxg=%llu %s, traverse=%d, %llu errors, stop=%u\n", |
| 2515 scrub_type == POOL_SCRUB_RESILVER ? "resilver" : "scrub", | |
| 789 | 2516 spa->spa_scrub_maxtxg, complete ? "done" : "FAILED", |
| 2517 error, spa->spa_scrub_errors, spa->spa_scrub_stop); | |
| 2518 | |
| 2519 mutex_exit(&spa->spa_scrub_lock); | |
| 2520 | |
| 2521 /* | |
| 2522 * If the scrub/resilver completed, update all DTLs to reflect this. | |
| 2523 * Whether it succeeded or not, vacate all temporary scrub DTLs. | |
| 2524 */ | |
| 2525 vdev_dtl_reassess(rvd, spa_last_synced_txg(spa) + 1, | |
| 2526 complete ? spa->spa_scrub_maxtxg : 0, B_TRUE); | |
| 2527 vdev_scrub_stat_update(rvd, POOL_SCRUB_NONE, complete); | |
| 1544 | 2528 spa_errlog_rotate(spa); |
|
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2529 |
| 4451 | 2530 if (scrub_type == POOL_SCRUB_RESILVER && complete) |
| 2531 spa_event_notify(spa, NULL, ESC_ZFS_RESILVER_FINISH); | |
| 2532 | |
| 1544 | 2533 spa_config_exit(spa, FTAG); |
| 789 | 2534 |
| 2535 mutex_enter(&spa->spa_scrub_lock); | |
| 2536 | |
| 1544 | 2537 /* |
| 2538 * We may have finished replacing a device. | |
| 2539 * Let the async thread assess this and handle the detach. | |
| 2540 */ | |
| 4451 | 2541 spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); |
| 789 | 2542 |
| 2543 /* | |
| 2544 * If we were told to restart, our final act is to start a new scrub. | |
| 2545 */ | |
| 2546 if (error == ERESTART) | |
| 1544 | 2547 spa_async_request(spa, scrub_type == POOL_SCRUB_RESILVER ? |
| 2548 SPA_ASYNC_RESILVER : SPA_ASYNC_SCRUB); | |
| 789 | 2549 |
| 1544 | 2550 spa->spa_scrub_type = POOL_SCRUB_NONE; |
| 2551 spa->spa_scrub_active = 0; | |
| 2552 spa->spa_scrub_thread = NULL; | |
| 2553 cv_broadcast(&spa->spa_scrub_cv); | |
| 789 | 2554 CALLB_CPR_EXIT(&cprinfo); /* drops &spa->spa_scrub_lock */ |
| 2555 thread_exit(); | |
| 2556 } | |
| 2557 | |
| 2558 void | |
| 2559 spa_scrub_suspend(spa_t *spa) | |
| 2560 { | |
| 2561 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2562 spa->spa_scrub_suspended++; |
| 789 | 2563 while (spa->spa_scrub_active) { |
| 2564 cv_broadcast(&spa->spa_scrub_cv); | |
| 2565 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2566 } | |
| 2567 while (spa->spa_scrub_inflight) | |
| 2568 cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock); | |
| 2569 mutex_exit(&spa->spa_scrub_lock); | |
| 2570 } | |
| 2571 | |
| 2572 void | |
| 2573 spa_scrub_resume(spa_t *spa) | |
| 2574 { | |
| 2575 mutex_enter(&spa->spa_scrub_lock); | |
| 1544 | 2576 ASSERT(spa->spa_scrub_suspended != 0); |
| 2577 if (--spa->spa_scrub_suspended == 0) | |
| 789 | 2578 cv_broadcast(&spa->spa_scrub_cv); |
| 2579 mutex_exit(&spa->spa_scrub_lock); | |
| 2580 } | |
| 2581 | |
| 2582 void | |
| 2583 spa_scrub_restart(spa_t *spa, uint64_t txg) | |
| 2584 { | |
| 2585 /* | |
| 2586 * Something happened (e.g. snapshot create/delete) that means | |
| 2587 * we must restart any in-progress scrubs. The itinerary will | |
| 2588 * fix this properly. | |
| 2589 */ | |
| 2590 mutex_enter(&spa->spa_scrub_lock); | |
| 2591 spa->spa_scrub_restart_txg = txg; | |
| 2592 mutex_exit(&spa->spa_scrub_lock); | |
| 2593 } | |
| 2594 | |
| 1544 | 2595 int |
| 2596 spa_scrub(spa_t *spa, pool_scrub_type_t type, boolean_t force) | |
| 789 | 2597 { |
| 2598 space_seg_t *ss; | |
| 2599 uint64_t mintxg, maxtxg; | |
| 2600 vdev_t *rvd = spa->spa_root_vdev; | |
| 2601 | |
| 2602 if ((uint_t)type >= POOL_SCRUB_TYPES) | |
| 2603 return (ENOTSUP); | |
| 2604 | |
| 1544 | 2605 mutex_enter(&spa->spa_scrub_lock); |
| 2606 | |
| 789 | 2607 /* |
| 2608 * If there's a scrub or resilver already in progress, stop it. | |
| 2609 */ | |
| 2610 while (spa->spa_scrub_thread != NULL) { | |
| 2611 /* | |
| 2612 * Don't stop a resilver unless forced. | |
| 2613 */ | |
| 1544 | 2614 if (spa->spa_scrub_type == POOL_SCRUB_RESILVER && !force) { |
| 2615 mutex_exit(&spa->spa_scrub_lock); | |
| 789 | 2616 return (EBUSY); |
| 1544 | 2617 } |
| 789 | 2618 spa->spa_scrub_stop = 1; |
| 2619 cv_broadcast(&spa->spa_scrub_cv); | |
| 2620 cv_wait(&spa->spa_scrub_cv, &spa->spa_scrub_lock); | |
| 2621 } | |
| 2622 | |
| 2623 /* | |
| 2624 * Terminate the previous traverse. | |
| 2625 */ | |
| 2626 if (spa->spa_scrub_th != NULL) { | |
| 2627 traverse_fini(spa->spa_scrub_th); | |
| 2628 spa->spa_scrub_th = NULL; | |
| 2629 } | |
| 2630 | |
| 1544 | 2631 if (rvd == NULL) { |
| 2632 ASSERT(spa->spa_scrub_stop == 0); | |
| 2633 ASSERT(spa->spa_scrub_type == type); | |
| 2634 ASSERT(spa->spa_scrub_restart_txg == 0); | |
| 2635 mutex_exit(&spa->spa_scrub_lock); | |
| 2636 return (0); | |
| 2637 } | |
| 789 | 2638 |
| 2639 mintxg = TXG_INITIAL - 1; | |
| 2640 maxtxg = spa_last_synced_txg(spa) + 1; | |
| 2641 | |
| 1544 | 2642 mutex_enter(&rvd->vdev_dtl_lock); |
| 789 | 2643 |
| 1544 | 2644 if (rvd->vdev_dtl_map.sm_space == 0) { |
| 2645 /* | |
| 2646 * The pool-wide DTL is empty. | |
| 1732 | 2647 * If this is a resilver, there's nothing to do except |
| 2648 * check whether any in-progress replacements have completed. | |
| 1544 | 2649 */ |
| 1732 | 2650 if (type == POOL_SCRUB_RESILVER) { |
| 1544 | 2651 type = POOL_SCRUB_NONE; |
| 4451 | 2652 spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); |
| 1732 | 2653 } |
| 1544 | 2654 } else { |
| 2655 /* | |
| 2656 * The pool-wide DTL is non-empty. | |
| 2657 * If this is a normal scrub, upgrade to a resilver instead. | |
| 2658 */ | |
| 2659 if (type == POOL_SCRUB_EVERYTHING) | |
| 2660 type = POOL_SCRUB_RESILVER; | |
| 2661 } | |
| 789 | 2662 |
| 1544 | 2663 if (type == POOL_SCRUB_RESILVER) { |
| 789 | 2664 /* |
| 2665 * Determine the resilvering boundaries. | |
| 2666 * | |
| 2667 * Note: (mintxg, maxtxg) is an open interval, | |
| 2668 * i.e. mintxg and maxtxg themselves are not included. | |
| 2669 * | |
| 2670 * Note: for maxtxg, we MIN with spa_last_synced_txg(spa) + 1 | |
| 2671 * so we don't claim to resilver a txg that's still changing. | |
| 2672 */ | |
| 2673 ss = avl_first(&rvd->vdev_dtl_map.sm_root); | |
| 1544 | 2674 mintxg = ss->ss_start - 1; |
| 789 | 2675 ss = avl_last(&rvd->vdev_dtl_map.sm_root); |
| 1544 | 2676 maxtxg = MIN(ss->ss_end, maxtxg); |
| 4451 | 2677 |
| 2678 spa_event_notify(spa, NULL, ESC_ZFS_RESILVER_START); | |
| 789 | 2679 } |
| 2680 | |
| 1544 | 2681 mutex_exit(&rvd->vdev_dtl_lock); |
| 2682 | |
| 2683 spa->spa_scrub_stop = 0; | |
| 2684 spa->spa_scrub_type = type; | |
| 2685 spa->spa_scrub_restart_txg = 0; | |
| 2686 | |
| 2687 if (type != POOL_SCRUB_NONE) { | |
| 2688 spa->spa_scrub_mintxg = mintxg; | |
| 789 | 2689 spa->spa_scrub_maxtxg = maxtxg; |
| 2690 spa->spa_scrub_th = traverse_init(spa, spa_scrub_cb, NULL, | |
|
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2691 ADVANCE_PRE | ADVANCE_PRUNE | ADVANCE_ZIL, |
|
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2692 ZIO_FLAG_CANFAIL); |
| 789 | 2693 traverse_add_pool(spa->spa_scrub_th, mintxg, maxtxg); |
| 2694 spa->spa_scrub_thread = thread_create(NULL, 0, | |
| 2695 spa_scrub_thread, spa, 0, &p0, TS_RUN, minclsyspri); | |
| 2696 } | |
| 2697 | |
| 1544 | 2698 mutex_exit(&spa->spa_scrub_lock); |
| 2699 | |
| 789 | 2700 return (0); |
| 2701 } | |
| 2702 | |
| 1544 | 2703 /* |
| 2704 * ========================================================================== | |
| 2705 * SPA async task processing | |
| 2706 * ========================================================================== | |
| 2707 */ | |
| 2708 | |
| 2709 static void | |
| 4451 | 2710 spa_async_remove(spa_t *spa, vdev_t *vd) |
| 789 | 2711 { |
| 1544 | 2712 vdev_t *tvd; |
| 2713 int c; | |
| 2714 | |
| 4451 | 2715 for (c = 0; c < vd->vdev_children; c++) { |
| 2716 tvd = vd->vdev_child[c]; | |
| 2717 if (tvd->vdev_remove_wanted) { | |
| 2718 tvd->vdev_remove_wanted = 0; | |
| 2719 vdev_set_state(tvd, B_FALSE, VDEV_STATE_REMOVED, | |
| 2720 VDEV_AUX_NONE); | |
| 2721 vdev_clear(spa, tvd); | |
| 2722 vdev_config_dirty(tvd->vdev_top); | |
| 1544 | 2723 } |
| 4451 | 2724 spa_async_remove(spa, tvd); |
| 1544 | 2725 } |
| 2726 } | |
| 2727 | |
| 2728 static void | |
| 2729 spa_async_thread(spa_t *spa) | |
| 2730 { | |
| 2731 int tasks; | |
| 4451 | 2732 uint64_t txg; |
| 1544 | 2733 |
| 2734 ASSERT(spa->spa_sync_on); | |
| 789 | 2735 |
| 1544 | 2736 mutex_enter(&spa->spa_async_lock); |
| 2737 tasks = spa->spa_async_tasks; | |
| 2738 spa->spa_async_tasks = 0; | |
| 2739 mutex_exit(&spa->spa_async_lock); | |
| 2740 | |
| 2741 /* | |
|
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2742 * See if the config needs to be updated. |
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2743 */ |
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2744 if (tasks & SPA_ASYNC_CONFIG_UPDATE) { |
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2745 mutex_enter(&spa_namespace_lock); |
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2746 spa_config_update(spa, SPA_CONFIG_UPDATE_POOL); |
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2747 mutex_exit(&spa_namespace_lock); |
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2748 } |
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2749 |
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2750 /* |
| 4451 | 2751 * See if any devices need to be marked REMOVED. |
| 1544 | 2752 */ |
| 4451 | 2753 if (tasks & SPA_ASYNC_REMOVE) { |
| 2754 txg = spa_vdev_enter(spa); | |
| 2755 spa_async_remove(spa, spa->spa_root_vdev); | |
| 2756 (void) spa_vdev_exit(spa, NULL, txg, 0); | |
| 2757 } | |
| 1544 | 2758 |
| 2759 /* | |
| 2760 * If any devices are done replacing, detach them. | |
| 2761 */ | |
| 4451 | 2762 if (tasks & SPA_ASYNC_RESILVER_DONE) |
| 2763 spa_vdev_resilver_done(spa); | |
| 789 | 2764 |
| 1544 | 2765 /* |
| 4451 | 2766 * Kick off a scrub. When starting a RESILVER scrub (or an EVERYTHING |
| 2767 * scrub which can become a resilver), we need to hold | |
| 2768 * spa_namespace_lock() because the sysevent we post via | |
| 2769 * spa_event_notify() needs to get the name of the pool. | |
| 1544 | 2770 */ |
| 4451 | 2771 if (tasks & SPA_ASYNC_SCRUB) { |
| 2772 mutex_enter(&spa_namespace_lock); | |
| 1544 | 2773 VERIFY(spa_scrub(spa, POOL_SCRUB_EVERYTHING, B_TRUE) == 0); |
| 4451 | 2774 mutex_exit(&spa_namespace_lock); |
| 2775 } | |
| 1544 | 2776 |
| 2777 /* | |
| 2778 * Kick off a resilver. | |
| 2779 */ | |
| 4451 | 2780 if (tasks & SPA_ASYNC_RESILVER) { |
| 2781 mutex_enter(&spa_namespace_lock); | |
| 1544 | 2782 VERIFY(spa_scrub(spa, POOL_SCRUB_RESILVER, B_TRUE) == 0); |
| 4451 | 2783 mutex_exit(&spa_namespace_lock); |
| 2784 } | |
| 1544 | 2785 |
| 2786 /* | |
| 2787 * Let the world know that we're done. | |
| 2788 */ | |
| 2789 mutex_enter(&spa->spa_async_lock); | |
| 2790 spa->spa_async_thread = NULL; | |
| 2791 cv_broadcast(&spa->spa_async_cv); | |
| 2792 mutex_exit(&spa->spa_async_lock); | |
| 2793 thread_exit(); | |
| 2794 } | |
| 2795 | |
| 2796 void | |
| 2797 spa_async_suspend(spa_t *spa) | |
| 2798 { | |
| 2799 mutex_enter(&spa->spa_async_lock); | |
| 2800 spa->spa_async_suspended++; | |
| 2801 while (spa->spa_async_thread != NULL) | |
| 2802 cv_wait(&spa->spa_async_cv, &spa->spa_async_lock); | |
| 2803 mutex_exit(&spa->spa_async_lock); | |
| 2804 } | |
| 2805 | |
| 2806 void | |
| 2807 spa_async_resume(spa_t *spa) | |
| 2808 { | |
| 2809 mutex_enter(&spa->spa_async_lock); | |
| 2810 ASSERT(spa->spa_async_suspended != 0); | |
| 2811 spa->spa_async_suspended--; | |
| 2812 mutex_exit(&spa->spa_async_lock); | |
| 2813 } | |
| 2814 | |
| 2815 static void | |
| 2816 spa_async_dispatch(spa_t *spa) | |
| 2817 { | |
| 2818 mutex_enter(&spa->spa_async_lock); | |
| 2819 if (spa->spa_async_tasks && !spa->spa_async_suspended && | |
|
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2820 spa->spa_async_thread == NULL && |
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2821 rootdir != NULL && !vn_is_readonly(rootdir)) |
| 1544 | 2822 spa->spa_async_thread = thread_create(NULL, 0, |
| 2823 spa_async_thread, spa, 0, &p0, TS_RUN, maxclsyspri); | |
| 2824 mutex_exit(&spa->spa_async_lock); | |
| 2825 } | |
| 2826 | |
| 2827 void | |
| 2828 spa_async_request(spa_t *spa, int task) | |
| 2829 { | |
| 2830 mutex_enter(&spa->spa_async_lock); | |
| 2831 spa->spa_async_tasks |= task; | |
| 2832 mutex_exit(&spa->spa_async_lock); | |
| 789 | 2833 } |
| 2834 | |
| 2835 /* | |
| 2836 * ========================================================================== | |
| 2837 * SPA syncing routines | |
| 2838 * ========================================================================== | |
| 2839 */ | |
| 2840 | |
| 2841 static void | |
| 2842 spa_sync_deferred_frees(spa_t *spa, uint64_t txg) | |
| 2843 { | |
| 2844 bplist_t *bpl = &spa->spa_sync_bplist; | |
| 2845 dmu_tx_t *tx; | |
| 2846 blkptr_t blk; | |
| 2847 uint64_t itor = 0; | |
| 2848 zio_t *zio; | |
| 2849 int error; | |
| 2850 uint8_t c = 1; | |
| 2851 | |
| 2852 zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CONFIG_HELD); | |
| 2853 | |
| 2854 while (bplist_iterate(bpl, &itor, &blk) == 0) | |
| 2855 zio_nowait(zio_free(zio, spa, txg, &blk, NULL, NULL)); | |
| 2856 | |
| 2857 error = zio_wait(zio); | |
| 2858 ASSERT3U(error, ==, 0); | |
| 2859 | |
| 2860 tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); | |
| 2861 bplist_vacate(bpl, tx); | |
| 2862 | |
| 2863 /* | |
| 2864 * Pre-dirty the first block so we sync to convergence faster. | |
| 2865 * (Usually only the first block is needed.) | |
| 2866 */ | |
| 2867 dmu_write(spa->spa_meta_objset, spa->spa_sync_bplist_obj, 0, 1, &c, tx); | |
| 2868 dmu_tx_commit(tx); | |
| 2869 } | |
| 2870 | |
| 2871 static void | |
| 2082 | 2872 spa_sync_nvlist(spa_t *spa, uint64_t obj, nvlist_t *nv, dmu_tx_t *tx) |
| 2873 { | |
| 2874 char *packed = NULL; | |
| 2875 size_t nvsize = 0; | |
| 2876 dmu_buf_t *db; | |
| 2877 | |
| 2878 VERIFY(nvlist_size(nv, &nvsize, NV_ENCODE_XDR) == 0); | |
| 2879 | |
| 2880 packed = kmem_alloc(nvsize, KM_SLEEP); | |
| 2881 | |
| 2882 VERIFY(nvlist_pack(nv, &packed, &nvsize, NV_ENCODE_XDR, | |
| 2883 KM_SLEEP) == 0); | |
| 2884 | |
| 2885 dmu_write(spa->spa_meta_objset, obj, 0, nvsize, packed, tx); | |
| 2886 | |
| 2887 kmem_free(packed, nvsize); | |
| 2888 | |
| 2889 VERIFY(0 == dmu_bonus_hold(spa->spa_meta_objset, obj, FTAG, &db)); | |
| 2890 dmu_buf_will_dirty(db, tx); | |
| 2891 *(uint64_t *)db->db_data = nvsize; | |
| 2892 dmu_buf_rele(db, FTAG); | |
| 2893 } | |
| 2894 | |
| 2895 static void | |
| 2896 spa_sync_spares(spa_t *spa, dmu_tx_t *tx) | |
| 2897 { | |
| 2898 nvlist_t *nvroot; | |
| 2899 nvlist_t **spares; | |
| 2900 int i; | |
| 2901 | |
| 2902 if (!spa->spa_sync_spares) | |
| 2903 return; | |
| 2904 | |
| 2905 /* | |
| 2906 * Update the MOS nvlist describing the list of available spares. | |
| 2907 * spa_validate_spares() will have already made sure this nvlist is | |
| 4451 | 2908 * valid and the vdevs are labeled appropriately. |
| 2082 | 2909 */ |
| 2910 if (spa->spa_spares_object == 0) { | |
| 2911 spa->spa_spares_object = dmu_object_alloc(spa->spa_meta_objset, | |
| 2912 DMU_OT_PACKED_NVLIST, 1 << 14, | |
| 2913 DMU_OT_PACKED_NVLIST_SIZE, sizeof (uint64_t), tx); | |
| 2914 VERIFY(zap_update(spa->spa_meta_objset, | |
| 2915 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_SPARES, | |
| 2916 sizeof (uint64_t), 1, &spa->spa_spares_object, tx) == 0); | |
| 2917 } | |
| 2918 | |
| 2919 VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 2920 if (spa->spa_nspares == 0) { | |
| 2921 VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 2922 NULL, 0) == 0); | |
| 2923 } else { | |
| 2924 spares = kmem_alloc(spa->spa_nspares * sizeof (void *), | |
| 2925 KM_SLEEP); | |
| 2926 for (i = 0; i < spa->spa_nspares; i++) | |
| 2927 spares[i] = vdev_config_generate(spa, | |
| 2928 spa->spa_spares[i], B_FALSE, B_TRUE); | |
| 2929 VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, | |
| 2930 spares, spa->spa_nspares) == 0); | |
| 2931 for (i = 0; i < spa->spa_nspares; i++) | |
| 2932 nvlist_free(spares[i]); | |
| 2933 kmem_free(spares, spa->spa_nspares * sizeof (void *)); | |
| 2934 } | |
| 2935 | |
| 2936 spa_sync_nvlist(spa, spa->spa_spares_object, nvroot, tx); | |
| 2926 | 2937 nvlist_free(nvroot); |
| 2082 | 2938 |
| 2939 spa->spa_sync_spares = B_FALSE; | |
| 2940 } | |
| 2941 | |
| 2942 static void | |
| 789 | 2943 spa_sync_config_object(spa_t *spa, dmu_tx_t *tx) |
| 2944 { | |
| 2945 nvlist_t *config; | |
| 2946 | |
| 2947 if (list_is_empty(&spa->spa_dirty_list)) | |
| 2948 return; | |
| 2949 | |
| 2950 config = spa_config_generate(spa, NULL, dmu_tx_get_txg(tx), B_FALSE); | |
| 2951 | |
|
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2952 if (spa->spa_config_syncing) |
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2953 nvlist_free(spa->spa_config_syncing); |
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2954 spa->spa_config_syncing = config; |
| 789 | 2955 |
| 2082 | 2956 spa_sync_nvlist(spa, spa->spa_config_object, config, tx); |
| 789 | 2957 } |
| 2958 | |
| 3912 | 2959 static void |
| 2960 spa_sync_props(void *arg1, void *arg2, dmu_tx_t *tx) | |
| 2961 { | |
| 2962 spa_t *spa = arg1; | |
| 2963 nvlist_t *nvp = arg2; | |
| 2964 nvpair_t *nvpair; | |
| 2965 objset_t *mos = spa->spa_meta_objset; | |
| 2966 uint64_t zapobj; | |
| 4451 | 2967 uint64_t intval; |
| 3912 | 2968 |
| 2969 mutex_enter(&spa->spa_props_lock); | |
| 2970 if (spa->spa_pool_props_object == 0) { | |
| 2971 zapobj = zap_create(mos, DMU_OT_POOL_PROPS, DMU_OT_NONE, 0, tx); | |
| 2972 VERIFY(zapobj > 0); | |
| 2973 | |
| 2974 spa->spa_pool_props_object = zapobj; | |
| 2975 | |
| 2976 VERIFY(zap_update(mos, DMU_POOL_DIRECTORY_OBJECT, | |
| 2977 DMU_POOL_PROPS, 8, 1, | |
| 2978 &spa->spa_pool_props_object, tx) == 0); | |
| 2979 } | |
| 2980 mutex_exit(&spa->spa_props_lock); | |
| 2981 | |
| 2982 nvpair = NULL; | |
| 2983 while ((nvpair = nvlist_next_nvpair(nvp, nvpair))) { | |
| 2984 switch (zpool_name_to_prop(nvpair_name(nvpair))) { | |
| 4451 | 2985 case ZPOOL_PROP_BOOTFS: |
| 3912 | 2986 VERIFY(nvlist_lookup_uint64(nvp, |
| 2987 nvpair_name(nvpair), &spa->spa_bootfs) == 0); | |
| 2988 VERIFY(zap_update(mos, | |
| 2989 spa->spa_pool_props_object, | |
| 4451 | 2990 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), 8, 1, |
| 3912 | 2991 &spa->spa_bootfs, tx) == 0); |
| 2992 break; | |
| 4451 | 2993 |
| 2994 case ZPOOL_PROP_AUTOREPLACE: | |
| 2995 VERIFY(nvlist_lookup_uint64(nvp, | |
| 2996 nvpair_name(nvpair), &intval) == 0); | |
| 2997 VERIFY(zap_update(mos, | |
| 2998 spa->spa_pool_props_object, | |
| 2999 zpool_prop_to_name(ZPOOL_PROP_AUTOREPLACE), 8, 1, | |
| 3000 &intval, tx) == 0); | |
| 3001 break; | |
| 3912 | 3002 } |
| 3003 } | |
| 3004 } | |
| 3005 | |
| 789 | 3006 /* |
| 3007 * Sync the specified transaction group. New blocks may be dirtied as | |
| 3008 * part of the process, so we iterate until it converges. | |
| 3009 */ | |
| 3010 void | |
| 3011 spa_sync(spa_t *spa, uint64_t txg) | |
| 3012 { | |
| 3013 dsl_pool_t *dp = spa->spa_dsl_pool; | |
| 3014 objset_t *mos = spa->spa_meta_objset; | |
| 3015 bplist_t *bpl = &spa->spa_sync_bplist; | |
|
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3016 vdev_t *rvd = spa->spa_root_vdev; |
| 789 | 3017 vdev_t *vd; |
| 3018 dmu_tx_t *tx; | |
| 3019 int dirty_vdevs; | |
| 3020 | |
| 3021 /* | |
| 3022 * Lock out configuration changes. | |
| 3023 */ | |
| 1544 | 3024 spa_config_enter(spa, RW_READER, FTAG); |
| 789 | 3025 |
| 3026 spa->spa_syncing_txg = txg; | |
| 3027 spa->spa_sync_pass = 0; | |
| 3028 | |
| 1544 | 3029 VERIFY(0 == bplist_open(bpl, mos, spa->spa_sync_bplist_obj)); |
| 789 | 3030 |
| 2082 | 3031 tx = dmu_tx_create_assigned(dp, txg); |
| 3032 | |
| 3033 /* | |
| 3034 * If we are upgrading to ZFS_VERSION_RAIDZ_DEFLATE this txg, | |
| 3035 * set spa_deflate if we have no raid-z vdevs. | |
| 3036 */ | |
| 3037 if (spa->spa_ubsync.ub_version < ZFS_VERSION_RAIDZ_DEFLATE && | |
| 3038 spa->spa_uberblock.ub_version >= ZFS_VERSION_RAIDZ_DEFLATE) { | |
| 3039 int i; | |
| 3040 | |
| 3041 for (i = 0; i < rvd->vdev_children; i++) { | |
| 3042 vd = rvd->vdev_child[i]; | |
| 3043 if (vd->vdev_deflate_ratio != SPA_MINBLOCKSIZE) | |
| 3044 break; | |
| 3045 } | |
| 3046 if (i == rvd->vdev_children) { | |
| 3047 spa->spa_deflate = TRUE; | |
| 3048 VERIFY(0 == zap_add(spa->spa_meta_objset, | |
| 3049 DMU_POOL_DIRECTORY_OBJECT, DMU_POOL_DEFLATE, | |
| 3050 sizeof (uint64_t), 1, &spa->spa_deflate, tx)); | |
| 3051 } | |
| 3052 } | |
| 3053 | |
| 789 | 3054 /* |
| 3055 * If anything has changed in this txg, push the deferred frees | |
| 3056 * from the previous txg. If not, leave them alone so that we | |
| 3057 * don't generate work on an otherwise idle system. | |
| 3058 */ | |
| 3059 if (!txg_list_empty(&dp->dp_dirty_datasets, txg) || | |
|
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3060 !txg_list_empty(&dp->dp_dirty_dirs, txg) || |
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3061 !txg_list_empty(&dp->dp_sync_tasks, txg)) |
| 789 | 3062 spa_sync_deferred_frees(spa, txg); |
| 3063 | |
| 3064 /* | |
| 3065 * Iterate to convergence. | |
| 3066 */ | |
| 3067 do { | |
| 3068 spa->spa_sync_pass++; | |
| 3069 | |
| 3070 spa_sync_config_object(spa, tx); | |
| 2082 | 3071 spa_sync_spares(spa, tx); |
| 1544 | 3072 spa_errlog_sync(spa, txg); |
| 789 | 3073 dsl_pool_sync(dp, txg); |
| 3074 | |
| 3075 dirty_vdevs = 0; | |
| 3076 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, txg)) { | |
| 3077 vdev_sync(vd, txg); | |
| 3078 dirty_vdevs++; | |
| 3079 } | |
| 3080 | |
| 3081 bplist_sync(bpl, tx); | |
| 3082 } while (dirty_vdevs); | |
| 3083 | |
| 3084 bplist_close(bpl); | |
| 3085 | |
| 3086 dprintf("txg %llu passes %d\n", txg, spa->spa_sync_pass); | |
| 3087 | |
| 3088 /* | |
| 3089 * Rewrite the vdev configuration (which includes the uberblock) | |
| 3090 * to commit the transaction group. | |
|
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3091 * |
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3092 * If there are any dirty vdevs, sync the uberblock to all vdevs. |
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3093 * Otherwise, pick a random top-level vdev that's known to be |
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3094 * visible in the config cache (see spa_vdev_add() for details). |
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3095 * If the write fails, try the next vdev until we're tried them all. |
| 789 | 3096 */ |
|
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3097 if (!list_is_empty(&spa->spa_dirty_list)) { |
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3098 VERIFY(vdev_config_sync(rvd, txg) == 0); |
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3099 } else { |
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3100 int children = rvd->vdev_children; |
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3101 int c0 = spa_get_random(children); |
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3102 int c; |
|
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3103 |
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3104 for (c = 0; c < children; c++) { |
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|
3105 vd = rvd->vdev_child[(c0 + c) % children]; |
|
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3106 if (vd->vdev_ms_array == 0) |
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3107 continue; |
|
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3108 if (vdev_config_sync(vd, txg) == 0) |
|
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3109 break; |
|
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|
3110 } |
|
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|
3111 if (c == children) |
|
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|
3112 VERIFY(vdev_config_sync(rvd, txg) == 0); |
|
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|
3113 } |
|
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|
3114 |
| 2082 | 3115 dmu_tx_commit(tx); |
| 3116 | |
|
1635
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|
3117 /* |
|
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|
3118 * Clear the dirty config list. |
|
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|
3119 */ |
|
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3120 while ((vd = list_head(&spa->spa_dirty_list)) != NULL) |
|
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|
3121 vdev_config_clean(vd); |
|
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|
3122 |
|
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|
3123 /* |
|
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|
3124 * Now that the new config has synced transactionally, |
|
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|
3125 * let it become visible to the config cache. |
|
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|
3126 */ |
|
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|
3127 if (spa->spa_config_syncing != NULL) { |
|
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3128 spa_config_set(spa, spa->spa_config_syncing); |
|
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|
3129 spa->spa_config_txg = txg; |
|
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|
3130 spa->spa_config_syncing = NULL; |
|
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|
3131 } |
| 789 | 3132 |
| 3133 /* | |
| 3134 * Make a stable copy of the fully synced uberblock. | |
| 3135 * We use this as the root for pool traversals. | |
| 3136 */ | |
| 3137 spa->spa_traverse_wanted = 1; /* tells traverse_more() to stop */ | |
| 3138 | |
| 3139 spa_scrub_suspend(spa); /* stop scrubbing and finish I/Os */ | |
| 3140 | |
| 3141 rw_enter(&spa->spa_traverse_lock, RW_WRITER); | |
| 3142 spa->spa_traverse_wanted = 0; | |
| 3143 spa->spa_ubsync = spa->spa_uberblock; | |
| 3144 rw_exit(&spa->spa_traverse_lock); | |
| 3145 | |
| 3146 spa_scrub_resume(spa); /* resume scrub with new ubsync */ | |
| 3147 | |
| 3148 /* | |
| 3149 * Clean up the ZIL records for the synced txg. | |
| 3150 */ | |
| 3151 dsl_pool_zil_clean(dp); | |
| 3152 | |
| 3153 /* | |
| 3154 * Update usable space statistics. | |
| 3155 */ | |
| 3156 while (vd = txg_list_remove(&spa->spa_vdev_txg_list, TXG_CLEAN(txg))) | |
| 3157 vdev_sync_done(vd, txg); | |
| 3158 | |
| 3159 /* | |
| 3160 * It had better be the case that we didn't dirty anything | |
| 2082 | 3161 * since vdev_config_sync(). |
| 789 | 3162 */ |
| 3163 ASSERT(txg_list_empty(&dp->dp_dirty_datasets, txg)); | |
| 3164 ASSERT(txg_list_empty(&dp->dp_dirty_dirs, txg)); | |
| 3165 ASSERT(txg_list_empty(&spa->spa_vdev_txg_list, txg)); | |
| 3166 ASSERT(bpl->bpl_queue == NULL); | |
| 3167 | |
| 1544 | 3168 spa_config_exit(spa, FTAG); |
| 3169 | |
| 3170 /* | |
| 3171 * If any async tasks have been requested, kick them off. | |
| 3172 */ | |
| 3173 spa_async_dispatch(spa); | |
| 789 | 3174 } |
| 3175 | |
| 3176 /* | |
| 3177 * Sync all pools. We don't want to hold the namespace lock across these | |
| 3178 * operations, so we take a reference on the spa_t and drop the lock during the | |
| 3179 * sync. | |
| 3180 */ | |
| 3181 void | |
| 3182 spa_sync_allpools(void) | |
| 3183 { | |
| 3184 spa_t *spa = NULL; | |
| 3185 mutex_enter(&spa_namespace_lock); | |
| 3186 while ((spa = spa_next(spa)) != NULL) { | |
| 3187 if (spa_state(spa) != POOL_STATE_ACTIVE) | |
| 3188 continue; | |
| 3189 spa_open_ref(spa, FTAG); | |
| 3190 mutex_exit(&spa_namespace_lock); | |
| 3191 txg_wait_synced(spa_get_dsl(spa), 0); | |
| 3192 mutex_enter(&spa_namespace_lock); | |
| 3193 spa_close(spa, FTAG); | |
| 3194 } | |
| 3195 mutex_exit(&spa_namespace_lock); | |
| 3196 } | |
| 3197 | |
| 3198 /* | |
| 3199 * ========================================================================== | |
| 3200 * Miscellaneous routines | |
| 3201 * ========================================================================== | |
| 3202 */ | |
| 3203 | |
| 3204 /* | |
| 3205 * Remove all pools in the system. | |
| 3206 */ | |
| 3207 void | |
| 3208 spa_evict_all(void) | |
| 3209 { | |
| 3210 spa_t *spa; | |
| 3211 | |
| 3212 /* | |
| 3213 * Remove all cached state. All pools should be closed now, | |
| 3214 * so every spa in the AVL tree should be unreferenced. | |
| 3215 */ | |
| 3216 mutex_enter(&spa_namespace_lock); | |
| 3217 while ((spa = spa_next(NULL)) != NULL) { | |
| 3218 /* | |
| 1544 | 3219 * Stop async tasks. The async thread may need to detach |
| 3220 * a device that's been replaced, which requires grabbing | |
| 3221 * spa_namespace_lock, so we must drop it here. | |
| 789 | 3222 */ |
| 3223 spa_open_ref(spa, FTAG); | |
| 3224 mutex_exit(&spa_namespace_lock); | |
| 1544 | 3225 spa_async_suspend(spa); |
| 789 | 3226 VERIFY(spa_scrub(spa, POOL_SCRUB_NONE, B_TRUE) == 0); |
| 3227 mutex_enter(&spa_namespace_lock); | |
| 3228 spa_close(spa, FTAG); | |
| 3229 | |
| 3230 if (spa->spa_state != POOL_STATE_UNINITIALIZED) { | |
| 3231 spa_unload(spa); | |
| 3232 spa_deactivate(spa); | |
| 3233 } | |
| 3234 spa_remove(spa); | |
| 3235 } | |
| 3236 mutex_exit(&spa_namespace_lock); | |
| 3237 } | |
| 1544 | 3238 |
| 3239 vdev_t * | |
| 3240 spa_lookup_by_guid(spa_t *spa, uint64_t guid) | |
| 3241 { | |
| 3242 return (vdev_lookup_by_guid(spa->spa_root_vdev, guid)); | |
| 3243 } | |
| 1760 | 3244 |
| 3245 void | |
| 3246 spa_upgrade(spa_t *spa) | |
| 3247 { | |
| 3248 spa_config_enter(spa, RW_WRITER, FTAG); | |
| 3249 | |
| 3250 /* | |
| 3251 * This should only be called for a non-faulted pool, and since a | |
| 3252 * future version would result in an unopenable pool, this shouldn't be | |
| 3253 * possible. | |
| 3254 */ | |
| 3255 ASSERT(spa->spa_uberblock.ub_version <= ZFS_VERSION); | |
| 3256 | |
| 3257 spa->spa_uberblock.ub_version = ZFS_VERSION; | |
| 3258 vdev_config_dirty(spa->spa_root_vdev); | |
| 3259 | |
| 3260 spa_config_exit(spa, FTAG); | |
| 2082 | 3261 |
| 3262 txg_wait_synced(spa_get_dsl(spa), 0); | |
| 1760 | 3263 } |
| 2082 | 3264 |
| 3265 boolean_t | |
| 3266 spa_has_spare(spa_t *spa, uint64_t guid) | |
| 3267 { | |
| 3268 int i; | |
|
3377
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|
3269 uint64_t spareguid; |
| 2082 | 3270 |
| 3271 for (i = 0; i < spa->spa_nspares; i++) | |
| 3272 if (spa->spa_spares[i]->vdev_guid == guid) | |
| 3273 return (B_TRUE); | |
| 3274 | |
|
3377
a2fa338530c1
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diff
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|
3275 for (i = 0; i < spa->spa_pending_nspares; i++) { |
|
a2fa338530c1
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diff
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|
3276 if (nvlist_lookup_uint64(spa->spa_pending_spares[i], |
|
a2fa338530c1
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3290
diff
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|
3277 ZPOOL_CONFIG_GUID, &spareguid) == 0 && |
|
a2fa338530c1
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3290
diff
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|
3278 spareguid == guid) |
|
a2fa338530c1
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3290
diff
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|
3279 return (B_TRUE); |
|
a2fa338530c1
6393525 vdev_reopen() should verify that it's still the same device
eschrock
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3290
diff
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|
3280 } |
|
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|
3281 |
| 2082 | 3282 return (B_FALSE); |
| 3283 } | |
| 3912 | 3284 |
| 3285 int | |
| 3286 spa_set_props(spa_t *spa, nvlist_t *nvp) | |
| 3287 { | |
| 3288 return (dsl_sync_task_do(spa_get_dsl(spa), NULL, spa_sync_props, | |
| 3289 spa, nvp, 3)); | |
| 3290 } | |
| 3291 | |
| 3292 int | |
| 3293 spa_get_props(spa_t *spa, nvlist_t **nvp) | |
| 3294 { | |
| 3295 zap_cursor_t zc; | |
| 3296 zap_attribute_t za; | |
| 3297 objset_t *mos = spa->spa_meta_objset; | |
| 3298 zfs_source_t src; | |
| 4451 | 3299 zpool_prop_t prop; |
| 3912 | 3300 nvlist_t *propval; |
| 3301 uint64_t value; | |
| 3302 int err; | |
| 3303 | |
| 3304 VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 3305 | |
| 3306 mutex_enter(&spa->spa_props_lock); | |
| 3307 /* If no props object, then just return empty nvlist */ | |
| 3308 if (spa->spa_pool_props_object == 0) { | |
| 3309 mutex_exit(&spa->spa_props_lock); | |
| 3310 return (0); | |
| 3311 } | |
| 3312 | |
| 3313 for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object); | |
| 3314 (err = zap_cursor_retrieve(&zc, &za)) == 0; | |
| 3315 zap_cursor_advance(&zc)) { | |
| 3316 | |
| 3317 if ((prop = zpool_name_to_prop(za.za_name)) == ZFS_PROP_INVAL) | |
| 3318 continue; | |
| 3319 | |
| 3320 VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
| 3321 switch (za.za_integer_length) { | |
| 3322 case 8: | |
| 4451 | 3323 if (zpool_prop_default_numeric(prop) == |
| 3912 | 3324 za.za_first_integer) |
| 3325 src = ZFS_SRC_DEFAULT; | |
| 3326 else | |
| 3327 src = ZFS_SRC_LOCAL; | |
| 3328 value = za.za_first_integer; | |
| 3329 | |
| 4451 | 3330 if (prop == ZPOOL_PROP_BOOTFS) { |
| 3912 | 3331 dsl_pool_t *dp; |
| 3332 dsl_dataset_t *ds = NULL; | |
| 3333 char strval[MAXPATHLEN]; | |
| 3334 | |
| 3335 dp = spa_get_dsl(spa); | |
| 3336 rw_enter(&dp->dp_config_rwlock, RW_READER); | |
| 3337 if ((err = dsl_dataset_open_obj(dp, | |
| 3338 za.za_first_integer, NULL, DS_MODE_NONE, | |
| 3339 FTAG, &ds)) != 0) { | |
| 3340 rw_exit(&dp->dp_config_rwlock); | |
| 3341 break; | |
| 3342 } | |
| 3343 dsl_dataset_name(ds, strval); | |
| 3344 dsl_dataset_close(ds, DS_MODE_NONE, FTAG); | |
| 3345 rw_exit(&dp->dp_config_rwlock); | |
| 3346 | |
| 3347 VERIFY(nvlist_add_uint64(propval, | |
| 3348 ZFS_PROP_SOURCE, src) == 0); | |
| 3349 VERIFY(nvlist_add_string(propval, | |
| 3350 ZFS_PROP_VALUE, strval) == 0); | |
| 3351 } else { | |
| 3352 VERIFY(nvlist_add_uint64(propval, | |
| 3353 ZFS_PROP_SOURCE, src) == 0); | |
| 3354 VERIFY(nvlist_add_uint64(propval, | |
| 3355 ZFS_PROP_VALUE, value) == 0); | |
| 3356 } | |
| 3357 VERIFY(nvlist_add_nvlist(*nvp, za.za_name, | |
| 3358 propval) == 0); | |
| 3359 break; | |
| 3360 } | |
| 3361 nvlist_free(propval); | |
| 3362 } | |
| 3363 zap_cursor_fini(&zc); | |
| 3364 mutex_exit(&spa->spa_props_lock); | |
| 3365 if (err && err != ENOENT) { | |
| 3366 nvlist_free(*nvp); | |
| 3367 return (err); | |
| 3368 } | |
| 3369 | |
| 3370 return (0); | |
| 3371 } | |
| 3372 | |
| 3373 /* | |
| 3374 * If the bootfs property value is dsobj, clear it. | |
| 3375 */ | |
| 3376 void | |
| 3377 spa_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) | |
| 3378 { | |
| 3379 if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) { | |
| 3380 VERIFY(zap_remove(spa->spa_meta_objset, | |
| 3381 spa->spa_pool_props_object, | |
| 4451 | 3382 zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0); |
| 3912 | 3383 spa->spa_bootfs = 0; |
| 3384 } | |
| 3385 } | |
| 4451 | 3386 |
| 3387 /* | |
| 3388 * Post a sysevent corresponding to the given event. The 'name' must be one of | |
| 3389 * the event definitions in sys/sysevent/eventdefs.h. The payload will be | |
| 3390 * filled in from the spa and (optionally) the vdev. This doesn't do anything | |
| 3391 * in the userland libzpool, as we don't want consumers to misinterpret ztest | |
| 3392 * or zdb as real changes. | |
| 3393 */ | |
| 3394 void | |
| 3395 spa_event_notify(spa_t *spa, vdev_t *vd, const char *name) | |
| 3396 { | |
| 3397 #ifdef _KERNEL | |
| 3398 sysevent_t *ev; | |
| 3399 sysevent_attr_list_t *attr = NULL; | |
| 3400 sysevent_value_t value; | |
| 3401 sysevent_id_t eid; | |
| 3402 | |
| 3403 ev = sysevent_alloc(EC_ZFS, (char *)name, SUNW_KERN_PUB "zfs", | |
| 3404 SE_SLEEP); | |
| 3405 | |
| 3406 value.value_type = SE_DATA_TYPE_STRING; | |
| 3407 value.value.sv_string = spa_name(spa); | |
| 3408 if (sysevent_add_attr(&attr, ZFS_EV_POOL_NAME, &value, SE_SLEEP) != 0) | |
| 3409 goto done; | |
| 3410 | |
| 3411 value.value_type = SE_DATA_TYPE_UINT64; | |
| 3412 value.value.sv_uint64 = spa_guid(spa); | |
| 3413 if (sysevent_add_attr(&attr, ZFS_EV_POOL_GUID, &value, SE_SLEEP) != 0) | |
| 3414 goto done; | |
| 3415 | |
| 3416 if (vd) { | |
| 3417 value.value_type = SE_DATA_TYPE_UINT64; | |
| 3418 value.value.sv_uint64 = vd->vdev_guid; | |
| 3419 if (sysevent_add_attr(&attr, ZFS_EV_VDEV_GUID, &value, | |
| 3420 SE_SLEEP) != 0) | |
| 3421 goto done; | |
| 3422 | |
| 3423 if (vd->vdev_path) { | |
| 3424 value.value_type = SE_DATA_TYPE_STRING; | |
| 3425 value.value.sv_string = vd->vdev_path; | |
| 3426 if (sysevent_add_attr(&attr, ZFS_EV_VDEV_PATH, | |
| 3427 &value, SE_SLEEP) != 0) | |
| 3428 goto done; | |
| 3429 } | |
| 3430 } | |
| 3431 | |
| 3432 (void) log_sysevent(ev, SE_SLEEP, &eid); | |
| 3433 | |
| 3434 done: | |
| 3435 if (attr) | |
| 3436 sysevent_free_attr(attr); | |
| 3437 sysevent_free(ev); | |
| 3438 #endif | |
| 3439 } |