1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5441d80aaSlling * Common Development and Distribution License (the "License"). 6441d80aaSlling * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 2199653d4eSeschrock 22fa9e4066Sahrens /* 23a3f829aeSBill Moore * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24fa9e4066Sahrens * Use is subject to license terms. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #include <sys/zfs_context.h> 28ea8dc4b6Seschrock #include <sys/fm/fs/zfs.h> 29fa9e4066Sahrens #include <sys/spa.h> 30fa9e4066Sahrens #include <sys/spa_impl.h> 31fa9e4066Sahrens #include <sys/dmu.h> 32fa9e4066Sahrens #include <sys/dmu_tx.h> 33fa9e4066Sahrens #include <sys/vdev_impl.h> 34fa9e4066Sahrens #include <sys/uberblock_impl.h> 35fa9e4066Sahrens #include <sys/metaslab.h> 36fa9e4066Sahrens #include <sys/metaslab_impl.h> 37fa9e4066Sahrens #include <sys/space_map.h> 38fa9e4066Sahrens #include <sys/zio.h> 39fa9e4066Sahrens #include <sys/zap.h> 40fa9e4066Sahrens #include <sys/fs/zfs.h> 41c5904d13Seschrock #include <sys/arc.h> 42e6ca193dSGeorge Wilson #include <sys/zil.h> 43fa9e4066Sahrens 44fa9e4066Sahrens /* 45fa9e4066Sahrens * Virtual device management. 46fa9e4066Sahrens */ 47fa9e4066Sahrens 48fa9e4066Sahrens static vdev_ops_t *vdev_ops_table[] = { 49fa9e4066Sahrens &vdev_root_ops, 50fa9e4066Sahrens &vdev_raidz_ops, 51fa9e4066Sahrens &vdev_mirror_ops, 52fa9e4066Sahrens &vdev_replacing_ops, 5399653d4eSeschrock &vdev_spare_ops, 54fa9e4066Sahrens &vdev_disk_ops, 55fa9e4066Sahrens &vdev_file_ops, 56fa9e4066Sahrens &vdev_missing_ops, 57fa9e4066Sahrens NULL 58fa9e4066Sahrens }; 59fa9e4066Sahrens 60088f3894Sahrens /* maximum scrub/resilver I/O queue per leaf vdev */ 61088f3894Sahrens int zfs_scrub_limit = 10; 6205b2b3b8Smishra 63fa9e4066Sahrens /* 64fa9e4066Sahrens * Given a vdev type, return the appropriate ops vector. 65fa9e4066Sahrens */ 66fa9e4066Sahrens static vdev_ops_t * 67fa9e4066Sahrens vdev_getops(const char *type) 68fa9e4066Sahrens { 69fa9e4066Sahrens vdev_ops_t *ops, **opspp; 70fa9e4066Sahrens 71fa9e4066Sahrens for (opspp = vdev_ops_table; (ops = *opspp) != NULL; opspp++) 72fa9e4066Sahrens if (strcmp(ops->vdev_op_type, type) == 0) 73fa9e4066Sahrens break; 74fa9e4066Sahrens 75fa9e4066Sahrens return (ops); 76fa9e4066Sahrens } 77fa9e4066Sahrens 78fa9e4066Sahrens /* 79fa9e4066Sahrens * Default asize function: return the MAX of psize with the asize of 80fa9e4066Sahrens * all children. This is what's used by anything other than RAID-Z. 81fa9e4066Sahrens */ 82fa9e4066Sahrens uint64_t 83fa9e4066Sahrens vdev_default_asize(vdev_t *vd, uint64_t psize) 84fa9e4066Sahrens { 85ecc2d604Sbonwick uint64_t asize = P2ROUNDUP(psize, 1ULL << vd->vdev_top->vdev_ashift); 86fa9e4066Sahrens uint64_t csize; 87fa9e4066Sahrens 88*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) { 89fa9e4066Sahrens csize = vdev_psize_to_asize(vd->vdev_child[c], psize); 90fa9e4066Sahrens asize = MAX(asize, csize); 91fa9e4066Sahrens } 92fa9e4066Sahrens 93fa9e4066Sahrens return (asize); 94fa9e4066Sahrens } 95fa9e4066Sahrens 962a79c5feSlling /* 97*573ca77eSGeorge Wilson * Get the minimum allocatable size. We define the allocatable size as 98*573ca77eSGeorge Wilson * the vdev's asize rounded to the nearest metaslab. This allows us to 99*573ca77eSGeorge Wilson * replace or attach devices which don't have the same physical size but 100*573ca77eSGeorge Wilson * can still satisfy the same number of allocations. 1012a79c5feSlling */ 1022a79c5feSlling uint64_t 103*573ca77eSGeorge Wilson vdev_get_min_asize(vdev_t *vd) 1042a79c5feSlling { 105*573ca77eSGeorge Wilson vdev_t *pvd = vd->vdev_parent; 1062a79c5feSlling 107*573ca77eSGeorge Wilson /* 108*573ca77eSGeorge Wilson * The our parent is NULL (inactive spare or cache) or is the root, 109*573ca77eSGeorge Wilson * just return our own asize. 110*573ca77eSGeorge Wilson */ 111*573ca77eSGeorge Wilson if (pvd == NULL) 112*573ca77eSGeorge Wilson return (vd->vdev_asize); 1132a79c5feSlling 1142a79c5feSlling /* 115*573ca77eSGeorge Wilson * The top-level vdev just returns the allocatable size rounded 116*573ca77eSGeorge Wilson * to the nearest metaslab. 1172a79c5feSlling */ 118*573ca77eSGeorge Wilson if (vd == vd->vdev_top) 119*573ca77eSGeorge Wilson return (P2ALIGN(vd->vdev_asize, 1ULL << vd->vdev_ms_shift)); 1202a79c5feSlling 121*573ca77eSGeorge Wilson /* 122*573ca77eSGeorge Wilson * The allocatable space for a raidz vdev is N * sizeof(smallest child), 123*573ca77eSGeorge Wilson * so each child must provide at least 1/Nth of its asize. 124*573ca77eSGeorge Wilson */ 125*573ca77eSGeorge Wilson if (pvd->vdev_ops == &vdev_raidz_ops) 126*573ca77eSGeorge Wilson return (pvd->vdev_min_asize / pvd->vdev_children); 1272a79c5feSlling 128*573ca77eSGeorge Wilson return (pvd->vdev_min_asize); 129*573ca77eSGeorge Wilson } 1302a79c5feSlling 131*573ca77eSGeorge Wilson void 132*573ca77eSGeorge Wilson vdev_set_min_asize(vdev_t *vd) 133*573ca77eSGeorge Wilson { 134*573ca77eSGeorge Wilson vd->vdev_min_asize = vdev_get_min_asize(vd); 135*573ca77eSGeorge Wilson 136*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 137*573ca77eSGeorge Wilson vdev_set_min_asize(vd->vdev_child[c]); 1382a79c5feSlling } 1392a79c5feSlling 140fa9e4066Sahrens vdev_t * 141fa9e4066Sahrens vdev_lookup_top(spa_t *spa, uint64_t vdev) 142fa9e4066Sahrens { 143fa9e4066Sahrens vdev_t *rvd = spa->spa_root_vdev; 144fa9e4066Sahrens 145e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 146e05725b1Sbonwick 147088f3894Sahrens if (vdev < rvd->vdev_children) { 148088f3894Sahrens ASSERT(rvd->vdev_child[vdev] != NULL); 149fa9e4066Sahrens return (rvd->vdev_child[vdev]); 150088f3894Sahrens } 151fa9e4066Sahrens 152fa9e4066Sahrens return (NULL); 153fa9e4066Sahrens } 154fa9e4066Sahrens 155fa9e4066Sahrens vdev_t * 156fa9e4066Sahrens vdev_lookup_by_guid(vdev_t *vd, uint64_t guid) 157fa9e4066Sahrens { 158fa9e4066Sahrens vdev_t *mvd; 159fa9e4066Sahrens 1600e34b6a7Sbonwick if (vd->vdev_guid == guid) 161fa9e4066Sahrens return (vd); 162fa9e4066Sahrens 163*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 164fa9e4066Sahrens if ((mvd = vdev_lookup_by_guid(vd->vdev_child[c], guid)) != 165fa9e4066Sahrens NULL) 166fa9e4066Sahrens return (mvd); 167fa9e4066Sahrens 168fa9e4066Sahrens return (NULL); 169fa9e4066Sahrens } 170fa9e4066Sahrens 171fa9e4066Sahrens void 172fa9e4066Sahrens vdev_add_child(vdev_t *pvd, vdev_t *cvd) 173fa9e4066Sahrens { 174fa9e4066Sahrens size_t oldsize, newsize; 175fa9e4066Sahrens uint64_t id = cvd->vdev_id; 176fa9e4066Sahrens vdev_t **newchild; 177fa9e4066Sahrens 178e14bb325SJeff Bonwick ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); 179fa9e4066Sahrens ASSERT(cvd->vdev_parent == NULL); 180fa9e4066Sahrens 181fa9e4066Sahrens cvd->vdev_parent = pvd; 182fa9e4066Sahrens 183fa9e4066Sahrens if (pvd == NULL) 184fa9e4066Sahrens return; 185fa9e4066Sahrens 186fa9e4066Sahrens ASSERT(id >= pvd->vdev_children || pvd->vdev_child[id] == NULL); 187fa9e4066Sahrens 188fa9e4066Sahrens oldsize = pvd->vdev_children * sizeof (vdev_t *); 189fa9e4066Sahrens pvd->vdev_children = MAX(pvd->vdev_children, id + 1); 190fa9e4066Sahrens newsize = pvd->vdev_children * sizeof (vdev_t *); 191fa9e4066Sahrens 192fa9e4066Sahrens newchild = kmem_zalloc(newsize, KM_SLEEP); 193fa9e4066Sahrens if (pvd->vdev_child != NULL) { 194fa9e4066Sahrens bcopy(pvd->vdev_child, newchild, oldsize); 195fa9e4066Sahrens kmem_free(pvd->vdev_child, oldsize); 196fa9e4066Sahrens } 197fa9e4066Sahrens 198fa9e4066Sahrens pvd->vdev_child = newchild; 199fa9e4066Sahrens pvd->vdev_child[id] = cvd; 200fa9e4066Sahrens 201fa9e4066Sahrens cvd->vdev_top = (pvd->vdev_top ? pvd->vdev_top: cvd); 202fa9e4066Sahrens ASSERT(cvd->vdev_top->vdev_parent->vdev_parent == NULL); 203fa9e4066Sahrens 204fa9e4066Sahrens /* 205fa9e4066Sahrens * Walk up all ancestors to update guid sum. 206fa9e4066Sahrens */ 207fa9e4066Sahrens for (; pvd != NULL; pvd = pvd->vdev_parent) 208fa9e4066Sahrens pvd->vdev_guid_sum += cvd->vdev_guid_sum; 20905b2b3b8Smishra 21005b2b3b8Smishra if (cvd->vdev_ops->vdev_op_leaf) 21105b2b3b8Smishra cvd->vdev_spa->spa_scrub_maxinflight += zfs_scrub_limit; 212fa9e4066Sahrens } 213fa9e4066Sahrens 214fa9e4066Sahrens void 215fa9e4066Sahrens vdev_remove_child(vdev_t *pvd, vdev_t *cvd) 216fa9e4066Sahrens { 217fa9e4066Sahrens int c; 218fa9e4066Sahrens uint_t id = cvd->vdev_id; 219fa9e4066Sahrens 220fa9e4066Sahrens ASSERT(cvd->vdev_parent == pvd); 221fa9e4066Sahrens 222fa9e4066Sahrens if (pvd == NULL) 223fa9e4066Sahrens return; 224fa9e4066Sahrens 225fa9e4066Sahrens ASSERT(id < pvd->vdev_children); 226fa9e4066Sahrens ASSERT(pvd->vdev_child[id] == cvd); 227fa9e4066Sahrens 228fa9e4066Sahrens pvd->vdev_child[id] = NULL; 229fa9e4066Sahrens cvd->vdev_parent = NULL; 230fa9e4066Sahrens 231fa9e4066Sahrens for (c = 0; c < pvd->vdev_children; c++) 232fa9e4066Sahrens if (pvd->vdev_child[c]) 233fa9e4066Sahrens break; 234fa9e4066Sahrens 235fa9e4066Sahrens if (c == pvd->vdev_children) { 236fa9e4066Sahrens kmem_free(pvd->vdev_child, c * sizeof (vdev_t *)); 237fa9e4066Sahrens pvd->vdev_child = NULL; 238fa9e4066Sahrens pvd->vdev_children = 0; 239fa9e4066Sahrens } 240fa9e4066Sahrens 241fa9e4066Sahrens /* 242fa9e4066Sahrens * Walk up all ancestors to update guid sum. 243fa9e4066Sahrens */ 244fa9e4066Sahrens for (; pvd != NULL; pvd = pvd->vdev_parent) 245fa9e4066Sahrens pvd->vdev_guid_sum -= cvd->vdev_guid_sum; 24605b2b3b8Smishra 24705b2b3b8Smishra if (cvd->vdev_ops->vdev_op_leaf) 24805b2b3b8Smishra cvd->vdev_spa->spa_scrub_maxinflight -= zfs_scrub_limit; 249fa9e4066Sahrens } 250fa9e4066Sahrens 251fa9e4066Sahrens /* 252fa9e4066Sahrens * Remove any holes in the child array. 253fa9e4066Sahrens */ 254fa9e4066Sahrens void 255fa9e4066Sahrens vdev_compact_children(vdev_t *pvd) 256fa9e4066Sahrens { 257fa9e4066Sahrens vdev_t **newchild, *cvd; 258fa9e4066Sahrens int oldc = pvd->vdev_children; 259*573ca77eSGeorge Wilson int newc; 260fa9e4066Sahrens 261e14bb325SJeff Bonwick ASSERT(spa_config_held(pvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); 262fa9e4066Sahrens 263*573ca77eSGeorge Wilson for (int c = newc = 0; c < oldc; c++) 264fa9e4066Sahrens if (pvd->vdev_child[c]) 265fa9e4066Sahrens newc++; 266fa9e4066Sahrens 267fa9e4066Sahrens newchild = kmem_alloc(newc * sizeof (vdev_t *), KM_SLEEP); 268fa9e4066Sahrens 269*573ca77eSGeorge Wilson for (int c = newc = 0; c < oldc; c++) { 270fa9e4066Sahrens if ((cvd = pvd->vdev_child[c]) != NULL) { 271fa9e4066Sahrens newchild[newc] = cvd; 272fa9e4066Sahrens cvd->vdev_id = newc++; 273fa9e4066Sahrens } 274fa9e4066Sahrens } 275fa9e4066Sahrens 276fa9e4066Sahrens kmem_free(pvd->vdev_child, oldc * sizeof (vdev_t *)); 277fa9e4066Sahrens pvd->vdev_child = newchild; 278fa9e4066Sahrens pvd->vdev_children = newc; 279fa9e4066Sahrens } 280fa9e4066Sahrens 281fa9e4066Sahrens /* 282fa9e4066Sahrens * Allocate and minimally initialize a vdev_t. 283fa9e4066Sahrens */ 284fa9e4066Sahrens static vdev_t * 285fa9e4066Sahrens vdev_alloc_common(spa_t *spa, uint_t id, uint64_t guid, vdev_ops_t *ops) 286fa9e4066Sahrens { 287fa9e4066Sahrens vdev_t *vd; 288fa9e4066Sahrens 289fa9e4066Sahrens vd = kmem_zalloc(sizeof (vdev_t), KM_SLEEP); 290fa9e4066Sahrens 2910e34b6a7Sbonwick if (spa->spa_root_vdev == NULL) { 2920e34b6a7Sbonwick ASSERT(ops == &vdev_root_ops); 2930e34b6a7Sbonwick spa->spa_root_vdev = vd; 2940e34b6a7Sbonwick } 2950e34b6a7Sbonwick 2960e34b6a7Sbonwick if (guid == 0) { 2970e34b6a7Sbonwick if (spa->spa_root_vdev == vd) { 2980e34b6a7Sbonwick /* 2990e34b6a7Sbonwick * The root vdev's guid will also be the pool guid, 3000e34b6a7Sbonwick * which must be unique among all pools. 3010e34b6a7Sbonwick */ 3020e34b6a7Sbonwick while (guid == 0 || spa_guid_exists(guid, 0)) 3030e34b6a7Sbonwick guid = spa_get_random(-1ULL); 3040e34b6a7Sbonwick } else { 3050e34b6a7Sbonwick /* 3060e34b6a7Sbonwick * Any other vdev's guid must be unique within the pool. 3070e34b6a7Sbonwick */ 3080e34b6a7Sbonwick while (guid == 0 || 3090e34b6a7Sbonwick spa_guid_exists(spa_guid(spa), guid)) 3100e34b6a7Sbonwick guid = spa_get_random(-1ULL); 3110e34b6a7Sbonwick } 3120e34b6a7Sbonwick ASSERT(!spa_guid_exists(spa_guid(spa), guid)); 3130e34b6a7Sbonwick } 3140e34b6a7Sbonwick 315fa9e4066Sahrens vd->vdev_spa = spa; 316fa9e4066Sahrens vd->vdev_id = id; 317fa9e4066Sahrens vd->vdev_guid = guid; 318fa9e4066Sahrens vd->vdev_guid_sum = guid; 319fa9e4066Sahrens vd->vdev_ops = ops; 320fa9e4066Sahrens vd->vdev_state = VDEV_STATE_CLOSED; 321fa9e4066Sahrens 322fa9e4066Sahrens mutex_init(&vd->vdev_dtl_lock, NULL, MUTEX_DEFAULT, NULL); 3235ad82045Snd mutex_init(&vd->vdev_stat_lock, NULL, MUTEX_DEFAULT, NULL); 324e14bb325SJeff Bonwick mutex_init(&vd->vdev_probe_lock, NULL, MUTEX_DEFAULT, NULL); 3258ad4d6ddSJeff Bonwick for (int t = 0; t < DTL_TYPES; t++) { 3268ad4d6ddSJeff Bonwick space_map_create(&vd->vdev_dtl[t], 0, -1ULL, 0, 3278ad4d6ddSJeff Bonwick &vd->vdev_dtl_lock); 3288ad4d6ddSJeff Bonwick } 329fa9e4066Sahrens txg_list_create(&vd->vdev_ms_list, 330fa9e4066Sahrens offsetof(struct metaslab, ms_txg_node)); 331fa9e4066Sahrens txg_list_create(&vd->vdev_dtl_list, 332fa9e4066Sahrens offsetof(struct vdev, vdev_dtl_node)); 333fa9e4066Sahrens vd->vdev_stat.vs_timestamp = gethrtime(); 3343d7072f8Seschrock vdev_queue_init(vd); 3353d7072f8Seschrock vdev_cache_init(vd); 336fa9e4066Sahrens 337fa9e4066Sahrens return (vd); 338fa9e4066Sahrens } 339fa9e4066Sahrens 340fa9e4066Sahrens /* 341fa9e4066Sahrens * Allocate a new vdev. The 'alloctype' is used to control whether we are 342fa9e4066Sahrens * creating a new vdev or loading an existing one - the behavior is slightly 343fa9e4066Sahrens * different for each case. 344fa9e4066Sahrens */ 34599653d4eSeschrock int 34699653d4eSeschrock vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, uint_t id, 34799653d4eSeschrock int alloctype) 348fa9e4066Sahrens { 349fa9e4066Sahrens vdev_ops_t *ops; 350fa9e4066Sahrens char *type; 3518654d025Sperrin uint64_t guid = 0, islog, nparity; 352fa9e4066Sahrens vdev_t *vd; 353fa9e4066Sahrens 354e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 355fa9e4066Sahrens 356fa9e4066Sahrens if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) 35799653d4eSeschrock return (EINVAL); 358fa9e4066Sahrens 359fa9e4066Sahrens if ((ops = vdev_getops(type)) == NULL) 36099653d4eSeschrock return (EINVAL); 361fa9e4066Sahrens 362fa9e4066Sahrens /* 363fa9e4066Sahrens * If this is a load, get the vdev guid from the nvlist. 364fa9e4066Sahrens * Otherwise, vdev_alloc_common() will generate one for us. 365fa9e4066Sahrens */ 366fa9e4066Sahrens if (alloctype == VDEV_ALLOC_LOAD) { 367fa9e4066Sahrens uint64_t label_id; 368fa9e4066Sahrens 369fa9e4066Sahrens if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, &label_id) || 370fa9e4066Sahrens label_id != id) 37199653d4eSeschrock return (EINVAL); 372fa9e4066Sahrens 373fa9e4066Sahrens if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) 37499653d4eSeschrock return (EINVAL); 37599653d4eSeschrock } else if (alloctype == VDEV_ALLOC_SPARE) { 37699653d4eSeschrock if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) 37799653d4eSeschrock return (EINVAL); 378fa94a07fSbrendan } else if (alloctype == VDEV_ALLOC_L2CACHE) { 379fa94a07fSbrendan if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) 380fa94a07fSbrendan return (EINVAL); 38121ecdf64SLin Ling } else if (alloctype == VDEV_ALLOC_ROOTPOOL) { 38221ecdf64SLin Ling if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) 38321ecdf64SLin Ling return (EINVAL); 384fa9e4066Sahrens } 385fa9e4066Sahrens 38699653d4eSeschrock /* 38799653d4eSeschrock * The first allocated vdev must be of type 'root'. 38899653d4eSeschrock */ 38999653d4eSeschrock if (ops != &vdev_root_ops && spa->spa_root_vdev == NULL) 39099653d4eSeschrock return (EINVAL); 39199653d4eSeschrock 3928654d025Sperrin /* 3938654d025Sperrin * Determine whether we're a log vdev. 3948654d025Sperrin */ 3958654d025Sperrin islog = 0; 3968654d025Sperrin (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &islog); 397990b4856Slling if (islog && spa_version(spa) < SPA_VERSION_SLOGS) 3988654d025Sperrin return (ENOTSUP); 399fa9e4066Sahrens 40099653d4eSeschrock /* 4018654d025Sperrin * Set the nparity property for RAID-Z vdevs. 40299653d4eSeschrock */ 4038654d025Sperrin nparity = -1ULL; 40499653d4eSeschrock if (ops == &vdev_raidz_ops) { 40599653d4eSeschrock if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, 4068654d025Sperrin &nparity) == 0) { 40799653d4eSeschrock /* 40899653d4eSeschrock * Currently, we can only support 2 parity devices. 40999653d4eSeschrock */ 4108654d025Sperrin if (nparity == 0 || nparity > 2) 41199653d4eSeschrock return (EINVAL); 41299653d4eSeschrock /* 41399653d4eSeschrock * Older versions can only support 1 parity device. 41499653d4eSeschrock */ 4158654d025Sperrin if (nparity == 2 && 416e7437265Sahrens spa_version(spa) < SPA_VERSION_RAID6) 41799653d4eSeschrock return (ENOTSUP); 41899653d4eSeschrock } else { 41999653d4eSeschrock /* 42099653d4eSeschrock * We require the parity to be specified for SPAs that 42199653d4eSeschrock * support multiple parity levels. 42299653d4eSeschrock */ 423e7437265Sahrens if (spa_version(spa) >= SPA_VERSION_RAID6) 42499653d4eSeschrock return (EINVAL); 42599653d4eSeschrock /* 42699653d4eSeschrock * Otherwise, we default to 1 parity device for RAID-Z. 42799653d4eSeschrock */ 4288654d025Sperrin nparity = 1; 42999653d4eSeschrock } 43099653d4eSeschrock } else { 4318654d025Sperrin nparity = 0; 43299653d4eSeschrock } 4338654d025Sperrin ASSERT(nparity != -1ULL); 4348654d025Sperrin 4358654d025Sperrin vd = vdev_alloc_common(spa, id, guid, ops); 4368654d025Sperrin 4378654d025Sperrin vd->vdev_islog = islog; 4388654d025Sperrin vd->vdev_nparity = nparity; 4398654d025Sperrin 4408654d025Sperrin if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &vd->vdev_path) == 0) 4418654d025Sperrin vd->vdev_path = spa_strdup(vd->vdev_path); 4428654d025Sperrin if (nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &vd->vdev_devid) == 0) 4438654d025Sperrin vd->vdev_devid = spa_strdup(vd->vdev_devid); 4448654d025Sperrin if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PHYS_PATH, 4458654d025Sperrin &vd->vdev_physpath) == 0) 4468654d025Sperrin vd->vdev_physpath = spa_strdup(vd->vdev_physpath); 4476809eb4eSEric Schrock if (nvlist_lookup_string(nv, ZPOOL_CONFIG_FRU, &vd->vdev_fru) == 0) 4486809eb4eSEric Schrock vd->vdev_fru = spa_strdup(vd->vdev_fru); 44999653d4eSeschrock 450afefbcddSeschrock /* 451afefbcddSeschrock * Set the whole_disk property. If it's not specified, leave the value 452afefbcddSeschrock * as -1. 453afefbcddSeschrock */ 454afefbcddSeschrock if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 455afefbcddSeschrock &vd->vdev_wholedisk) != 0) 456afefbcddSeschrock vd->vdev_wholedisk = -1ULL; 457afefbcddSeschrock 458ea8dc4b6Seschrock /* 459ea8dc4b6Seschrock * Look for the 'not present' flag. This will only be set if the device 460ea8dc4b6Seschrock * was not present at the time of import. 461ea8dc4b6Seschrock */ 4626809eb4eSEric Schrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, 4636809eb4eSEric Schrock &vd->vdev_not_present); 464ea8dc4b6Seschrock 465ecc2d604Sbonwick /* 466ecc2d604Sbonwick * Get the alignment requirement. 467ecc2d604Sbonwick */ 468ecc2d604Sbonwick (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASHIFT, &vd->vdev_ashift); 469ecc2d604Sbonwick 470fa9e4066Sahrens /* 471fa9e4066Sahrens * If we're a top-level vdev, try to load the allocation parameters. 472fa9e4066Sahrens */ 473fa9e4066Sahrens if (parent && !parent->vdev_parent && alloctype == VDEV_ALLOC_LOAD) { 474fa9e4066Sahrens (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_ARRAY, 475fa9e4066Sahrens &vd->vdev_ms_array); 476fa9e4066Sahrens (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_SHIFT, 477fa9e4066Sahrens &vd->vdev_ms_shift); 478fa9e4066Sahrens (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASIZE, 479fa9e4066Sahrens &vd->vdev_asize); 480fa9e4066Sahrens } 481fa9e4066Sahrens 482fa9e4066Sahrens /* 4833d7072f8Seschrock * If we're a leaf vdev, try to load the DTL object and other state. 484fa9e4066Sahrens */ 485c5904d13Seschrock if (vd->vdev_ops->vdev_op_leaf && 48621ecdf64SLin Ling (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_L2CACHE || 48721ecdf64SLin Ling alloctype == VDEV_ALLOC_ROOTPOOL)) { 488c5904d13Seschrock if (alloctype == VDEV_ALLOC_LOAD) { 489c5904d13Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DTL, 4908ad4d6ddSJeff Bonwick &vd->vdev_dtl_smo.smo_object); 491c5904d13Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_UNSPARE, 492c5904d13Seschrock &vd->vdev_unspare); 493c5904d13Seschrock } 49421ecdf64SLin Ling 49521ecdf64SLin Ling if (alloctype == VDEV_ALLOC_ROOTPOOL) { 49621ecdf64SLin Ling uint64_t spare = 0; 49721ecdf64SLin Ling 49821ecdf64SLin Ling if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 49921ecdf64SLin Ling &spare) == 0 && spare) 50021ecdf64SLin Ling spa_spare_add(vd); 50121ecdf64SLin Ling } 50221ecdf64SLin Ling 503ecc2d604Sbonwick (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, 504ecc2d604Sbonwick &vd->vdev_offline); 505c5904d13Seschrock 5063d7072f8Seschrock /* 5073d7072f8Seschrock * When importing a pool, we want to ignore the persistent fault 5083d7072f8Seschrock * state, as the diagnosis made on another system may not be 5093d7072f8Seschrock * valid in the current context. 5103d7072f8Seschrock */ 5113d7072f8Seschrock if (spa->spa_load_state == SPA_LOAD_OPEN) { 5123d7072f8Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, 5133d7072f8Seschrock &vd->vdev_faulted); 5143d7072f8Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DEGRADED, 5153d7072f8Seschrock &vd->vdev_degraded); 5163d7072f8Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, 5173d7072f8Seschrock &vd->vdev_removed); 5183d7072f8Seschrock } 519fa9e4066Sahrens } 520fa9e4066Sahrens 521fa9e4066Sahrens /* 522fa9e4066Sahrens * Add ourselves to the parent's list of children. 523fa9e4066Sahrens */ 524fa9e4066Sahrens vdev_add_child(parent, vd); 525fa9e4066Sahrens 52699653d4eSeschrock *vdp = vd; 52799653d4eSeschrock 52899653d4eSeschrock return (0); 529fa9e4066Sahrens } 530fa9e4066Sahrens 531fa9e4066Sahrens void 532fa9e4066Sahrens vdev_free(vdev_t *vd) 533fa9e4066Sahrens { 5343d7072f8Seschrock spa_t *spa = vd->vdev_spa; 535fa9e4066Sahrens 536fa9e4066Sahrens /* 537fa9e4066Sahrens * vdev_free() implies closing the vdev first. This is simpler than 538fa9e4066Sahrens * trying to ensure complicated semantics for all callers. 539fa9e4066Sahrens */ 540fa9e4066Sahrens vdev_close(vd); 541fa9e4066Sahrens 542e14bb325SJeff Bonwick ASSERT(!list_link_active(&vd->vdev_config_dirty_node)); 543fa9e4066Sahrens 544fa9e4066Sahrens /* 545fa9e4066Sahrens * Free all children. 546fa9e4066Sahrens */ 547*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 548fa9e4066Sahrens vdev_free(vd->vdev_child[c]); 549fa9e4066Sahrens 550fa9e4066Sahrens ASSERT(vd->vdev_child == NULL); 551fa9e4066Sahrens ASSERT(vd->vdev_guid_sum == vd->vdev_guid); 552fa9e4066Sahrens 553fa9e4066Sahrens /* 554fa9e4066Sahrens * Discard allocation state. 555fa9e4066Sahrens */ 556fa9e4066Sahrens if (vd == vd->vdev_top) 557fa9e4066Sahrens vdev_metaslab_fini(vd); 558fa9e4066Sahrens 559fa9e4066Sahrens ASSERT3U(vd->vdev_stat.vs_space, ==, 0); 56099653d4eSeschrock ASSERT3U(vd->vdev_stat.vs_dspace, ==, 0); 561fa9e4066Sahrens ASSERT3U(vd->vdev_stat.vs_alloc, ==, 0); 562fa9e4066Sahrens 563fa9e4066Sahrens /* 564fa9e4066Sahrens * Remove this vdev from its parent's child list. 565fa9e4066Sahrens */ 566fa9e4066Sahrens vdev_remove_child(vd->vdev_parent, vd); 567fa9e4066Sahrens 568fa9e4066Sahrens ASSERT(vd->vdev_parent == NULL); 569fa9e4066Sahrens 5703d7072f8Seschrock /* 5713d7072f8Seschrock * Clean up vdev structure. 5723d7072f8Seschrock */ 5733d7072f8Seschrock vdev_queue_fini(vd); 5743d7072f8Seschrock vdev_cache_fini(vd); 5753d7072f8Seschrock 5763d7072f8Seschrock if (vd->vdev_path) 5773d7072f8Seschrock spa_strfree(vd->vdev_path); 5783d7072f8Seschrock if (vd->vdev_devid) 5793d7072f8Seschrock spa_strfree(vd->vdev_devid); 5803d7072f8Seschrock if (vd->vdev_physpath) 5813d7072f8Seschrock spa_strfree(vd->vdev_physpath); 5826809eb4eSEric Schrock if (vd->vdev_fru) 5836809eb4eSEric Schrock spa_strfree(vd->vdev_fru); 5843d7072f8Seschrock 5853d7072f8Seschrock if (vd->vdev_isspare) 5863d7072f8Seschrock spa_spare_remove(vd); 587fa94a07fSbrendan if (vd->vdev_isl2cache) 588fa94a07fSbrendan spa_l2cache_remove(vd); 5893d7072f8Seschrock 5903d7072f8Seschrock txg_list_destroy(&vd->vdev_ms_list); 5913d7072f8Seschrock txg_list_destroy(&vd->vdev_dtl_list); 5928ad4d6ddSJeff Bonwick 5933d7072f8Seschrock mutex_enter(&vd->vdev_dtl_lock); 5948ad4d6ddSJeff Bonwick for (int t = 0; t < DTL_TYPES; t++) { 5958ad4d6ddSJeff Bonwick space_map_unload(&vd->vdev_dtl[t]); 5968ad4d6ddSJeff Bonwick space_map_destroy(&vd->vdev_dtl[t]); 5978ad4d6ddSJeff Bonwick } 5983d7072f8Seschrock mutex_exit(&vd->vdev_dtl_lock); 5998ad4d6ddSJeff Bonwick 6003d7072f8Seschrock mutex_destroy(&vd->vdev_dtl_lock); 6013d7072f8Seschrock mutex_destroy(&vd->vdev_stat_lock); 602e14bb325SJeff Bonwick mutex_destroy(&vd->vdev_probe_lock); 6033d7072f8Seschrock 6043d7072f8Seschrock if (vd == spa->spa_root_vdev) 6053d7072f8Seschrock spa->spa_root_vdev = NULL; 6063d7072f8Seschrock 6073d7072f8Seschrock kmem_free(vd, sizeof (vdev_t)); 608fa9e4066Sahrens } 609fa9e4066Sahrens 610fa9e4066Sahrens /* 611fa9e4066Sahrens * Transfer top-level vdev state from svd to tvd. 612fa9e4066Sahrens */ 613fa9e4066Sahrens static void 614fa9e4066Sahrens vdev_top_transfer(vdev_t *svd, vdev_t *tvd) 615fa9e4066Sahrens { 616fa9e4066Sahrens spa_t *spa = svd->vdev_spa; 617fa9e4066Sahrens metaslab_t *msp; 618fa9e4066Sahrens vdev_t *vd; 619fa9e4066Sahrens int t; 620fa9e4066Sahrens 621fa9e4066Sahrens ASSERT(tvd == tvd->vdev_top); 622fa9e4066Sahrens 623fa9e4066Sahrens tvd->vdev_ms_array = svd->vdev_ms_array; 624fa9e4066Sahrens tvd->vdev_ms_shift = svd->vdev_ms_shift; 625fa9e4066Sahrens tvd->vdev_ms_count = svd->vdev_ms_count; 626fa9e4066Sahrens 627fa9e4066Sahrens svd->vdev_ms_array = 0; 628fa9e4066Sahrens svd->vdev_ms_shift = 0; 629fa9e4066Sahrens svd->vdev_ms_count = 0; 630fa9e4066Sahrens 631fa9e4066Sahrens tvd->vdev_mg = svd->vdev_mg; 632fa9e4066Sahrens tvd->vdev_ms = svd->vdev_ms; 633fa9e4066Sahrens 634fa9e4066Sahrens svd->vdev_mg = NULL; 635fa9e4066Sahrens svd->vdev_ms = NULL; 636ecc2d604Sbonwick 637ecc2d604Sbonwick if (tvd->vdev_mg != NULL) 638ecc2d604Sbonwick tvd->vdev_mg->mg_vd = tvd; 639fa9e4066Sahrens 640fa9e4066Sahrens tvd->vdev_stat.vs_alloc = svd->vdev_stat.vs_alloc; 641fa9e4066Sahrens tvd->vdev_stat.vs_space = svd->vdev_stat.vs_space; 64299653d4eSeschrock tvd->vdev_stat.vs_dspace = svd->vdev_stat.vs_dspace; 643fa9e4066Sahrens 644fa9e4066Sahrens svd->vdev_stat.vs_alloc = 0; 645fa9e4066Sahrens svd->vdev_stat.vs_space = 0; 64699653d4eSeschrock svd->vdev_stat.vs_dspace = 0; 647fa9e4066Sahrens 648fa9e4066Sahrens for (t = 0; t < TXG_SIZE; t++) { 649fa9e4066Sahrens while ((msp = txg_list_remove(&svd->vdev_ms_list, t)) != NULL) 650fa9e4066Sahrens (void) txg_list_add(&tvd->vdev_ms_list, msp, t); 651fa9e4066Sahrens while ((vd = txg_list_remove(&svd->vdev_dtl_list, t)) != NULL) 652fa9e4066Sahrens (void) txg_list_add(&tvd->vdev_dtl_list, vd, t); 653fa9e4066Sahrens if (txg_list_remove_this(&spa->spa_vdev_txg_list, svd, t)) 654fa9e4066Sahrens (void) txg_list_add(&spa->spa_vdev_txg_list, tvd, t); 655fa9e4066Sahrens } 656fa9e4066Sahrens 657e14bb325SJeff Bonwick if (list_link_active(&svd->vdev_config_dirty_node)) { 658fa9e4066Sahrens vdev_config_clean(svd); 659fa9e4066Sahrens vdev_config_dirty(tvd); 660fa9e4066Sahrens } 661fa9e4066Sahrens 662e14bb325SJeff Bonwick if (list_link_active(&svd->vdev_state_dirty_node)) { 663e14bb325SJeff Bonwick vdev_state_clean(svd); 664e14bb325SJeff Bonwick vdev_state_dirty(tvd); 665e14bb325SJeff Bonwick } 666e14bb325SJeff Bonwick 66799653d4eSeschrock tvd->vdev_deflate_ratio = svd->vdev_deflate_ratio; 66899653d4eSeschrock svd->vdev_deflate_ratio = 0; 6698654d025Sperrin 6708654d025Sperrin tvd->vdev_islog = svd->vdev_islog; 6718654d025Sperrin svd->vdev_islog = 0; 672fa9e4066Sahrens } 673fa9e4066Sahrens 674fa9e4066Sahrens static void 675fa9e4066Sahrens vdev_top_update(vdev_t *tvd, vdev_t *vd) 676fa9e4066Sahrens { 677fa9e4066Sahrens if (vd == NULL) 678fa9e4066Sahrens return; 679fa9e4066Sahrens 680fa9e4066Sahrens vd->vdev_top = tvd; 681fa9e4066Sahrens 682*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 683fa9e4066Sahrens vdev_top_update(tvd, vd->vdev_child[c]); 684fa9e4066Sahrens } 685fa9e4066Sahrens 686fa9e4066Sahrens /* 687fa9e4066Sahrens * Add a mirror/replacing vdev above an existing vdev. 688fa9e4066Sahrens */ 689fa9e4066Sahrens vdev_t * 690fa9e4066Sahrens vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops) 691fa9e4066Sahrens { 692fa9e4066Sahrens spa_t *spa = cvd->vdev_spa; 693fa9e4066Sahrens vdev_t *pvd = cvd->vdev_parent; 694fa9e4066Sahrens vdev_t *mvd; 695fa9e4066Sahrens 696e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 697fa9e4066Sahrens 698fa9e4066Sahrens mvd = vdev_alloc_common(spa, cvd->vdev_id, 0, ops); 699ecc2d604Sbonwick 700ecc2d604Sbonwick mvd->vdev_asize = cvd->vdev_asize; 701*573ca77eSGeorge Wilson mvd->vdev_min_asize = cvd->vdev_min_asize; 702ecc2d604Sbonwick mvd->vdev_ashift = cvd->vdev_ashift; 703ecc2d604Sbonwick mvd->vdev_state = cvd->vdev_state; 704ecc2d604Sbonwick 705fa9e4066Sahrens vdev_remove_child(pvd, cvd); 706fa9e4066Sahrens vdev_add_child(pvd, mvd); 707fa9e4066Sahrens cvd->vdev_id = mvd->vdev_children; 708fa9e4066Sahrens vdev_add_child(mvd, cvd); 709fa9e4066Sahrens vdev_top_update(cvd->vdev_top, cvd->vdev_top); 710fa9e4066Sahrens 711fa9e4066Sahrens if (mvd == mvd->vdev_top) 712fa9e4066Sahrens vdev_top_transfer(cvd, mvd); 713fa9e4066Sahrens 714fa9e4066Sahrens return (mvd); 715fa9e4066Sahrens } 716fa9e4066Sahrens 717fa9e4066Sahrens /* 718fa9e4066Sahrens * Remove a 1-way mirror/replacing vdev from the tree. 719fa9e4066Sahrens */ 720fa9e4066Sahrens void 721fa9e4066Sahrens vdev_remove_parent(vdev_t *cvd) 722fa9e4066Sahrens { 723fa9e4066Sahrens vdev_t *mvd = cvd->vdev_parent; 724fa9e4066Sahrens vdev_t *pvd = mvd->vdev_parent; 725fa9e4066Sahrens 726e14bb325SJeff Bonwick ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); 727fa9e4066Sahrens 728fa9e4066Sahrens ASSERT(mvd->vdev_children == 1); 729fa9e4066Sahrens ASSERT(mvd->vdev_ops == &vdev_mirror_ops || 73099653d4eSeschrock mvd->vdev_ops == &vdev_replacing_ops || 73199653d4eSeschrock mvd->vdev_ops == &vdev_spare_ops); 732ecc2d604Sbonwick cvd->vdev_ashift = mvd->vdev_ashift; 733fa9e4066Sahrens 734fa9e4066Sahrens vdev_remove_child(mvd, cvd); 735fa9e4066Sahrens vdev_remove_child(pvd, mvd); 7368ad4d6ddSJeff Bonwick 73799653d4eSeschrock /* 738e14bb325SJeff Bonwick * If cvd will replace mvd as a top-level vdev, preserve mvd's guid. 739e14bb325SJeff Bonwick * Otherwise, we could have detached an offline device, and when we 740e14bb325SJeff Bonwick * go to import the pool we'll think we have two top-level vdevs, 741e14bb325SJeff Bonwick * instead of a different version of the same top-level vdev. 74299653d4eSeschrock */ 7438ad4d6ddSJeff Bonwick if (mvd->vdev_top == mvd) { 7448ad4d6ddSJeff Bonwick uint64_t guid_delta = mvd->vdev_guid - cvd->vdev_guid; 7458ad4d6ddSJeff Bonwick cvd->vdev_guid += guid_delta; 7468ad4d6ddSJeff Bonwick cvd->vdev_guid_sum += guid_delta; 7478ad4d6ddSJeff Bonwick } 748e14bb325SJeff Bonwick cvd->vdev_id = mvd->vdev_id; 749e14bb325SJeff Bonwick vdev_add_child(pvd, cvd); 750fa9e4066Sahrens vdev_top_update(cvd->vdev_top, cvd->vdev_top); 751fa9e4066Sahrens 752fa9e4066Sahrens if (cvd == cvd->vdev_top) 753fa9e4066Sahrens vdev_top_transfer(mvd, cvd); 754fa9e4066Sahrens 755fa9e4066Sahrens ASSERT(mvd->vdev_children == 0); 756fa9e4066Sahrens vdev_free(mvd); 757fa9e4066Sahrens } 758fa9e4066Sahrens 759ea8dc4b6Seschrock int 760fa9e4066Sahrens vdev_metaslab_init(vdev_t *vd, uint64_t txg) 761fa9e4066Sahrens { 762fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 763ecc2d604Sbonwick objset_t *mos = spa->spa_meta_objset; 7648654d025Sperrin metaslab_class_t *mc; 765ecc2d604Sbonwick uint64_t m; 766fa9e4066Sahrens uint64_t oldc = vd->vdev_ms_count; 767fa9e4066Sahrens uint64_t newc = vd->vdev_asize >> vd->vdev_ms_shift; 768ecc2d604Sbonwick metaslab_t **mspp; 769ecc2d604Sbonwick int error; 770fa9e4066Sahrens 7710e34b6a7Sbonwick if (vd->vdev_ms_shift == 0) /* not being allocated from yet */ 7720e34b6a7Sbonwick return (0); 7730e34b6a7Sbonwick 774e6ca193dSGeorge Wilson /* 775e6ca193dSGeorge Wilson * Compute the raidz-deflation ratio. Note, we hard-code 776e6ca193dSGeorge Wilson * in 128k (1 << 17) because it is the current "typical" blocksize. 777e6ca193dSGeorge Wilson * Even if SPA_MAXBLOCKSIZE changes, this algorithm must never change, 778e6ca193dSGeorge Wilson * or we will inconsistently account for existing bp's. 779e6ca193dSGeorge Wilson */ 780e6ca193dSGeorge Wilson vd->vdev_deflate_ratio = (1 << 17) / 781e6ca193dSGeorge Wilson (vdev_psize_to_asize(vd, 1 << 17) >> SPA_MINBLOCKSHIFT); 782e6ca193dSGeorge Wilson 783fa9e4066Sahrens ASSERT(oldc <= newc); 784fa9e4066Sahrens 7858654d025Sperrin if (vd->vdev_islog) 7868654d025Sperrin mc = spa->spa_log_class; 7878654d025Sperrin else 7888654d025Sperrin mc = spa->spa_normal_class; 7898654d025Sperrin 790ecc2d604Sbonwick if (vd->vdev_mg == NULL) 791ecc2d604Sbonwick vd->vdev_mg = metaslab_group_create(mc, vd); 792fa9e4066Sahrens 793ecc2d604Sbonwick mspp = kmem_zalloc(newc * sizeof (*mspp), KM_SLEEP); 794fa9e4066Sahrens 795ecc2d604Sbonwick if (oldc != 0) { 796ecc2d604Sbonwick bcopy(vd->vdev_ms, mspp, oldc * sizeof (*mspp)); 797ecc2d604Sbonwick kmem_free(vd->vdev_ms, oldc * sizeof (*mspp)); 798ecc2d604Sbonwick } 799fa9e4066Sahrens 800ecc2d604Sbonwick vd->vdev_ms = mspp; 801ecc2d604Sbonwick vd->vdev_ms_count = newc; 802fa9e4066Sahrens 803ecc2d604Sbonwick for (m = oldc; m < newc; m++) { 804ecc2d604Sbonwick space_map_obj_t smo = { 0, 0, 0 }; 805ecc2d604Sbonwick if (txg == 0) { 806ecc2d604Sbonwick uint64_t object = 0; 807ecc2d604Sbonwick error = dmu_read(mos, vd->vdev_ms_array, 8087bfdf011SNeil Perrin m * sizeof (uint64_t), sizeof (uint64_t), &object, 8097bfdf011SNeil Perrin DMU_READ_PREFETCH); 810ecc2d604Sbonwick if (error) 811ecc2d604Sbonwick return (error); 812ecc2d604Sbonwick if (object != 0) { 813ecc2d604Sbonwick dmu_buf_t *db; 814ecc2d604Sbonwick error = dmu_bonus_hold(mos, object, FTAG, &db); 815ecc2d604Sbonwick if (error) 816ecc2d604Sbonwick return (error); 8171934e92fSmaybee ASSERT3U(db->db_size, >=, sizeof (smo)); 8181934e92fSmaybee bcopy(db->db_data, &smo, sizeof (smo)); 819ecc2d604Sbonwick ASSERT3U(smo.smo_object, ==, object); 820ea8dc4b6Seschrock dmu_buf_rele(db, FTAG); 821fa9e4066Sahrens } 822fa9e4066Sahrens } 823ecc2d604Sbonwick vd->vdev_ms[m] = metaslab_init(vd->vdev_mg, &smo, 824ecc2d604Sbonwick m << vd->vdev_ms_shift, 1ULL << vd->vdev_ms_shift, txg); 825fa9e4066Sahrens } 826fa9e4066Sahrens 827ea8dc4b6Seschrock return (0); 828fa9e4066Sahrens } 829fa9e4066Sahrens 830fa9e4066Sahrens void 831fa9e4066Sahrens vdev_metaslab_fini(vdev_t *vd) 832fa9e4066Sahrens { 833fa9e4066Sahrens uint64_t m; 834fa9e4066Sahrens uint64_t count = vd->vdev_ms_count; 835fa9e4066Sahrens 836fa9e4066Sahrens if (vd->vdev_ms != NULL) { 837fa9e4066Sahrens for (m = 0; m < count; m++) 838ecc2d604Sbonwick if (vd->vdev_ms[m] != NULL) 839ecc2d604Sbonwick metaslab_fini(vd->vdev_ms[m]); 840fa9e4066Sahrens kmem_free(vd->vdev_ms, count * sizeof (metaslab_t *)); 841fa9e4066Sahrens vd->vdev_ms = NULL; 842fa9e4066Sahrens } 843fa9e4066Sahrens } 844fa9e4066Sahrens 845e14bb325SJeff Bonwick typedef struct vdev_probe_stats { 846e14bb325SJeff Bonwick boolean_t vps_readable; 847e14bb325SJeff Bonwick boolean_t vps_writeable; 848e14bb325SJeff Bonwick int vps_flags; 849e14bb325SJeff Bonwick } vdev_probe_stats_t; 850e14bb325SJeff Bonwick 851e14bb325SJeff Bonwick static void 852e14bb325SJeff Bonwick vdev_probe_done(zio_t *zio) 8530a4e9518Sgw { 8548ad4d6ddSJeff Bonwick spa_t *spa = zio->io_spa; 855a3f829aeSBill Moore vdev_t *vd = zio->io_vd; 856e14bb325SJeff Bonwick vdev_probe_stats_t *vps = zio->io_private; 857a3f829aeSBill Moore 858a3f829aeSBill Moore ASSERT(vd->vdev_probe_zio != NULL); 859e14bb325SJeff Bonwick 860e14bb325SJeff Bonwick if (zio->io_type == ZIO_TYPE_READ) { 861e14bb325SJeff Bonwick if (zio->io_error == 0) 862e14bb325SJeff Bonwick vps->vps_readable = 1; 8638ad4d6ddSJeff Bonwick if (zio->io_error == 0 && spa_writeable(spa)) { 864a3f829aeSBill Moore zio_nowait(zio_write_phys(vd->vdev_probe_zio, vd, 865e14bb325SJeff Bonwick zio->io_offset, zio->io_size, zio->io_data, 866e14bb325SJeff Bonwick ZIO_CHECKSUM_OFF, vdev_probe_done, vps, 867e14bb325SJeff Bonwick ZIO_PRIORITY_SYNC_WRITE, vps->vps_flags, B_TRUE)); 868e14bb325SJeff Bonwick } else { 869e14bb325SJeff Bonwick zio_buf_free(zio->io_data, zio->io_size); 870e14bb325SJeff Bonwick } 871e14bb325SJeff Bonwick } else if (zio->io_type == ZIO_TYPE_WRITE) { 872e14bb325SJeff Bonwick if (zio->io_error == 0) 873e14bb325SJeff Bonwick vps->vps_writeable = 1; 874e14bb325SJeff Bonwick zio_buf_free(zio->io_data, zio->io_size); 875e14bb325SJeff Bonwick } else if (zio->io_type == ZIO_TYPE_NULL) { 876a3f829aeSBill Moore zio_t *pio; 877e14bb325SJeff Bonwick 878e14bb325SJeff Bonwick vd->vdev_cant_read |= !vps->vps_readable; 879e14bb325SJeff Bonwick vd->vdev_cant_write |= !vps->vps_writeable; 880e14bb325SJeff Bonwick 881e14bb325SJeff Bonwick if (vdev_readable(vd) && 8828ad4d6ddSJeff Bonwick (vdev_writeable(vd) || !spa_writeable(spa))) { 883e14bb325SJeff Bonwick zio->io_error = 0; 884e14bb325SJeff Bonwick } else { 885e14bb325SJeff Bonwick ASSERT(zio->io_error != 0); 886e14bb325SJeff Bonwick zfs_ereport_post(FM_EREPORT_ZFS_PROBE_FAILURE, 8878ad4d6ddSJeff Bonwick spa, vd, NULL, 0, 0); 888e14bb325SJeff Bonwick zio->io_error = ENXIO; 889e14bb325SJeff Bonwick } 890a3f829aeSBill Moore 891a3f829aeSBill Moore mutex_enter(&vd->vdev_probe_lock); 892a3f829aeSBill Moore ASSERT(vd->vdev_probe_zio == zio); 893a3f829aeSBill Moore vd->vdev_probe_zio = NULL; 894a3f829aeSBill Moore mutex_exit(&vd->vdev_probe_lock); 895a3f829aeSBill Moore 896a3f829aeSBill Moore while ((pio = zio_walk_parents(zio)) != NULL) 897a3f829aeSBill Moore if (!vdev_accessible(vd, pio)) 898a3f829aeSBill Moore pio->io_error = ENXIO; 899a3f829aeSBill Moore 900e14bb325SJeff Bonwick kmem_free(vps, sizeof (*vps)); 901e14bb325SJeff Bonwick } 902e14bb325SJeff Bonwick } 9030a4e9518Sgw 904e14bb325SJeff Bonwick /* 905e14bb325SJeff Bonwick * Determine whether this device is accessible by reading and writing 906e14bb325SJeff Bonwick * to several known locations: the pad regions of each vdev label 907e14bb325SJeff Bonwick * but the first (which we leave alone in case it contains a VTOC). 908e14bb325SJeff Bonwick */ 909e14bb325SJeff Bonwick zio_t * 910a3f829aeSBill Moore vdev_probe(vdev_t *vd, zio_t *zio) 911e14bb325SJeff Bonwick { 912e14bb325SJeff Bonwick spa_t *spa = vd->vdev_spa; 913a3f829aeSBill Moore vdev_probe_stats_t *vps = NULL; 914a3f829aeSBill Moore zio_t *pio; 915a3f829aeSBill Moore 916a3f829aeSBill Moore ASSERT(vd->vdev_ops->vdev_op_leaf); 9170a4e9518Sgw 918a3f829aeSBill Moore /* 919a3f829aeSBill Moore * Don't probe the probe. 920a3f829aeSBill Moore */ 921a3f829aeSBill Moore if (zio && (zio->io_flags & ZIO_FLAG_PROBE)) 922a3f829aeSBill Moore return (NULL); 923e14bb325SJeff Bonwick 924a3f829aeSBill Moore /* 925a3f829aeSBill Moore * To prevent 'probe storms' when a device fails, we create 926a3f829aeSBill Moore * just one probe i/o at a time. All zios that want to probe 927a3f829aeSBill Moore * this vdev will become parents of the probe io. 928a3f829aeSBill Moore */ 929a3f829aeSBill Moore mutex_enter(&vd->vdev_probe_lock); 930e14bb325SJeff Bonwick 931a3f829aeSBill Moore if ((pio = vd->vdev_probe_zio) == NULL) { 932a3f829aeSBill Moore vps = kmem_zalloc(sizeof (*vps), KM_SLEEP); 933a3f829aeSBill Moore 934a3f829aeSBill Moore vps->vps_flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_PROBE | 935a3f829aeSBill Moore ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_AGGREGATE | 9368956713aSEric Schrock ZIO_FLAG_TRYHARD; 937a3f829aeSBill Moore 938a3f829aeSBill Moore if (spa_config_held(spa, SCL_ZIO, RW_WRITER)) { 939a3f829aeSBill Moore /* 940a3f829aeSBill Moore * vdev_cant_read and vdev_cant_write can only 941a3f829aeSBill Moore * transition from TRUE to FALSE when we have the 942a3f829aeSBill Moore * SCL_ZIO lock as writer; otherwise they can only 943a3f829aeSBill Moore * transition from FALSE to TRUE. This ensures that 944a3f829aeSBill Moore * any zio looking at these values can assume that 945a3f829aeSBill Moore * failures persist for the life of the I/O. That's 946a3f829aeSBill Moore * important because when a device has intermittent 947a3f829aeSBill Moore * connectivity problems, we want to ensure that 948a3f829aeSBill Moore * they're ascribed to the device (ENXIO) and not 949a3f829aeSBill Moore * the zio (EIO). 950a3f829aeSBill Moore * 951a3f829aeSBill Moore * Since we hold SCL_ZIO as writer here, clear both 952a3f829aeSBill Moore * values so the probe can reevaluate from first 953a3f829aeSBill Moore * principles. 954a3f829aeSBill Moore */ 955a3f829aeSBill Moore vps->vps_flags |= ZIO_FLAG_CONFIG_WRITER; 956a3f829aeSBill Moore vd->vdev_cant_read = B_FALSE; 957a3f829aeSBill Moore vd->vdev_cant_write = B_FALSE; 958a3f829aeSBill Moore } 959a3f829aeSBill Moore 960a3f829aeSBill Moore vd->vdev_probe_zio = pio = zio_null(NULL, spa, vd, 961a3f829aeSBill Moore vdev_probe_done, vps, 962a3f829aeSBill Moore vps->vps_flags | ZIO_FLAG_DONT_PROPAGATE); 963a3f829aeSBill Moore 964a3f829aeSBill Moore if (zio != NULL) { 965a3f829aeSBill Moore vd->vdev_probe_wanted = B_TRUE; 966a3f829aeSBill Moore spa_async_request(spa, SPA_ASYNC_PROBE); 967a3f829aeSBill Moore } 968e14bb325SJeff Bonwick } 969e14bb325SJeff Bonwick 970a3f829aeSBill Moore if (zio != NULL) 971a3f829aeSBill Moore zio_add_child(zio, pio); 972e14bb325SJeff Bonwick 973a3f829aeSBill Moore mutex_exit(&vd->vdev_probe_lock); 974e14bb325SJeff Bonwick 975a3f829aeSBill Moore if (vps == NULL) { 976a3f829aeSBill Moore ASSERT(zio != NULL); 977a3f829aeSBill Moore return (NULL); 978a3f829aeSBill Moore } 979e14bb325SJeff Bonwick 980e14bb325SJeff Bonwick for (int l = 1; l < VDEV_LABELS; l++) { 981a3f829aeSBill Moore zio_nowait(zio_read_phys(pio, vd, 982e14bb325SJeff Bonwick vdev_label_offset(vd->vdev_psize, l, 983f83ffe1aSLin Ling offsetof(vdev_label_t, vl_pad2)), 984f83ffe1aSLin Ling VDEV_PAD_SIZE, zio_buf_alloc(VDEV_PAD_SIZE), 985e14bb325SJeff Bonwick ZIO_CHECKSUM_OFF, vdev_probe_done, vps, 986e14bb325SJeff Bonwick ZIO_PRIORITY_SYNC_READ, vps->vps_flags, B_TRUE)); 987e14bb325SJeff Bonwick } 988e14bb325SJeff Bonwick 989a3f829aeSBill Moore if (zio == NULL) 990a3f829aeSBill Moore return (pio); 991a3f829aeSBill Moore 992a3f829aeSBill Moore zio_nowait(pio); 993a3f829aeSBill Moore return (NULL); 9940a4e9518Sgw } 9950a4e9518Sgw 996fa9e4066Sahrens /* 997fa9e4066Sahrens * Prepare a virtual device for access. 998fa9e4066Sahrens */ 999fa9e4066Sahrens int 1000fa9e4066Sahrens vdev_open(vdev_t *vd) 1001fa9e4066Sahrens { 10028ad4d6ddSJeff Bonwick spa_t *spa = vd->vdev_spa; 1003fa9e4066Sahrens int error; 1004fa9e4066Sahrens uint64_t osize = 0; 1005fa9e4066Sahrens uint64_t asize, psize; 1006ecc2d604Sbonwick uint64_t ashift = 0; 1007fa9e4066Sahrens 10088ad4d6ddSJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 10098ad4d6ddSJeff Bonwick 1010fa9e4066Sahrens ASSERT(vd->vdev_state == VDEV_STATE_CLOSED || 1011fa9e4066Sahrens vd->vdev_state == VDEV_STATE_CANT_OPEN || 1012fa9e4066Sahrens vd->vdev_state == VDEV_STATE_OFFLINE); 1013fa9e4066Sahrens 1014fa9e4066Sahrens vd->vdev_stat.vs_aux = VDEV_AUX_NONE; 1015e6ca193dSGeorge Wilson vd->vdev_cant_read = B_FALSE; 1016e6ca193dSGeorge Wilson vd->vdev_cant_write = B_FALSE; 1017*573ca77eSGeorge Wilson vd->vdev_min_asize = vdev_get_min_asize(vd); 1018fa9e4066Sahrens 10193d7072f8Seschrock if (!vd->vdev_removed && vd->vdev_faulted) { 10203d7072f8Seschrock ASSERT(vd->vdev_children == 0); 10213d7072f8Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, 10223d7072f8Seschrock VDEV_AUX_ERR_EXCEEDED); 10233d7072f8Seschrock return (ENXIO); 10243d7072f8Seschrock } else if (vd->vdev_offline) { 1025fa9e4066Sahrens ASSERT(vd->vdev_children == 0); 1026ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, VDEV_AUX_NONE); 1027fa9e4066Sahrens return (ENXIO); 1028fa9e4066Sahrens } 1029fa9e4066Sahrens 1030fa9e4066Sahrens error = vd->vdev_ops->vdev_op_open(vd, &osize, &ashift); 1031fa9e4066Sahrens 1032ea8dc4b6Seschrock if (zio_injection_enabled && error == 0) 10338956713aSEric Schrock error = zio_handle_device_injection(vd, NULL, ENXIO); 1034ea8dc4b6Seschrock 1035fa9e4066Sahrens if (error) { 10363d7072f8Seschrock if (vd->vdev_removed && 10373d7072f8Seschrock vd->vdev_stat.vs_aux != VDEV_AUX_OPEN_FAILED) 10383d7072f8Seschrock vd->vdev_removed = B_FALSE; 10393d7072f8Seschrock 1040ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1041fa9e4066Sahrens vd->vdev_stat.vs_aux); 1042fa9e4066Sahrens return (error); 1043fa9e4066Sahrens } 1044fa9e4066Sahrens 10453d7072f8Seschrock vd->vdev_removed = B_FALSE; 10463d7072f8Seschrock 10473d7072f8Seschrock if (vd->vdev_degraded) { 10483d7072f8Seschrock ASSERT(vd->vdev_children == 0); 10493d7072f8Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, 10503d7072f8Seschrock VDEV_AUX_ERR_EXCEEDED); 10513d7072f8Seschrock } else { 10523d7072f8Seschrock vd->vdev_state = VDEV_STATE_HEALTHY; 10533d7072f8Seschrock } 1054fa9e4066Sahrens 1055*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) { 1056ea8dc4b6Seschrock if (vd->vdev_child[c]->vdev_state != VDEV_STATE_HEALTHY) { 1057ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, 1058ea8dc4b6Seschrock VDEV_AUX_NONE); 1059ea8dc4b6Seschrock break; 1060ea8dc4b6Seschrock } 1061*573ca77eSGeorge Wilson } 1062fa9e4066Sahrens 1063fa9e4066Sahrens osize = P2ALIGN(osize, (uint64_t)sizeof (vdev_label_t)); 1064fa9e4066Sahrens 1065fa9e4066Sahrens if (vd->vdev_children == 0) { 1066fa9e4066Sahrens if (osize < SPA_MINDEVSIZE) { 1067ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1068ea8dc4b6Seschrock VDEV_AUX_TOO_SMALL); 1069fa9e4066Sahrens return (EOVERFLOW); 1070fa9e4066Sahrens } 1071fa9e4066Sahrens psize = osize; 1072fa9e4066Sahrens asize = osize - (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE); 1073fa9e4066Sahrens } else { 1074ecc2d604Sbonwick if (vd->vdev_parent != NULL && osize < SPA_MINDEVSIZE - 1075fa9e4066Sahrens (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE)) { 1076ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1077ea8dc4b6Seschrock VDEV_AUX_TOO_SMALL); 1078fa9e4066Sahrens return (EOVERFLOW); 1079fa9e4066Sahrens } 1080fa9e4066Sahrens psize = 0; 1081fa9e4066Sahrens asize = osize; 1082fa9e4066Sahrens } 1083fa9e4066Sahrens 1084fa9e4066Sahrens vd->vdev_psize = psize; 1085fa9e4066Sahrens 1086*573ca77eSGeorge Wilson /* 1087*573ca77eSGeorge Wilson * Make sure the allocatable size hasn't shrunk. 1088*573ca77eSGeorge Wilson */ 1089*573ca77eSGeorge Wilson if (asize < vd->vdev_min_asize) { 1090*573ca77eSGeorge Wilson vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1091*573ca77eSGeorge Wilson VDEV_AUX_BAD_LABEL); 1092*573ca77eSGeorge Wilson return (EINVAL); 1093*573ca77eSGeorge Wilson } 1094*573ca77eSGeorge Wilson 1095fa9e4066Sahrens if (vd->vdev_asize == 0) { 1096fa9e4066Sahrens /* 1097fa9e4066Sahrens * This is the first-ever open, so use the computed values. 1098ecc2d604Sbonwick * For testing purposes, a higher ashift can be requested. 1099fa9e4066Sahrens */ 1100fa9e4066Sahrens vd->vdev_asize = asize; 1101ecc2d604Sbonwick vd->vdev_ashift = MAX(ashift, vd->vdev_ashift); 1102fa9e4066Sahrens } else { 1103fa9e4066Sahrens /* 1104fa9e4066Sahrens * Make sure the alignment requirement hasn't increased. 1105fa9e4066Sahrens */ 1106ecc2d604Sbonwick if (ashift > vd->vdev_top->vdev_ashift) { 1107ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1108ea8dc4b6Seschrock VDEV_AUX_BAD_LABEL); 1109fa9e4066Sahrens return (EINVAL); 1110fa9e4066Sahrens } 1111*573ca77eSGeorge Wilson } 1112fa9e4066Sahrens 1113*573ca77eSGeorge Wilson /* 1114*573ca77eSGeorge Wilson * If all children are healthy and the asize has increased, 1115*573ca77eSGeorge Wilson * then we've experienced dynamic LUN growth. If automatic 1116*573ca77eSGeorge Wilson * expansion is enabled then use the additional space. 1117*573ca77eSGeorge Wilson */ 1118*573ca77eSGeorge Wilson if (vd->vdev_state == VDEV_STATE_HEALTHY && asize > vd->vdev_asize && 1119*573ca77eSGeorge Wilson (vd->vdev_expanding || spa->spa_autoexpand)) 1120*573ca77eSGeorge Wilson vd->vdev_asize = asize; 1121fa9e4066Sahrens 1122*573ca77eSGeorge Wilson vdev_set_min_asize(vd); 1123fa9e4066Sahrens 11240a4e9518Sgw /* 11250a4e9518Sgw * Ensure we can issue some IO before declaring the 11260a4e9518Sgw * vdev open for business. 11270a4e9518Sgw */ 1128e14bb325SJeff Bonwick if (vd->vdev_ops->vdev_op_leaf && 1129e14bb325SJeff Bonwick (error = zio_wait(vdev_probe(vd, NULL))) != 0) { 11300a4e9518Sgw vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1131e14bb325SJeff Bonwick VDEV_AUX_IO_FAILURE); 11320a4e9518Sgw return (error); 11330a4e9518Sgw } 11340a4e9518Sgw 1135088f3894Sahrens /* 1136088f3894Sahrens * If a leaf vdev has a DTL, and seems healthy, then kick off a 11378ad4d6ddSJeff Bonwick * resilver. But don't do this if we are doing a reopen for a scrub, 11388ad4d6ddSJeff Bonwick * since this would just restart the scrub we are already doing. 1139088f3894Sahrens */ 11408ad4d6ddSJeff Bonwick if (vd->vdev_ops->vdev_op_leaf && !spa->spa_scrub_reopen && 11418ad4d6ddSJeff Bonwick vdev_resilver_needed(vd, NULL, NULL)) 11428ad4d6ddSJeff Bonwick spa_async_request(spa, SPA_ASYNC_RESILVER); 1143088f3894Sahrens 1144fa9e4066Sahrens return (0); 1145fa9e4066Sahrens } 1146fa9e4066Sahrens 1147560e6e96Seschrock /* 1148560e6e96Seschrock * Called once the vdevs are all opened, this routine validates the label 1149560e6e96Seschrock * contents. This needs to be done before vdev_load() so that we don't 11503d7072f8Seschrock * inadvertently do repair I/Os to the wrong device. 1151560e6e96Seschrock * 1152560e6e96Seschrock * This function will only return failure if one of the vdevs indicates that it 1153560e6e96Seschrock * has since been destroyed or exported. This is only possible if 1154560e6e96Seschrock * /etc/zfs/zpool.cache was readonly at the time. Otherwise, the vdev state 1155560e6e96Seschrock * will be updated but the function will return 0. 1156560e6e96Seschrock */ 1157560e6e96Seschrock int 1158560e6e96Seschrock vdev_validate(vdev_t *vd) 1159560e6e96Seschrock { 1160560e6e96Seschrock spa_t *spa = vd->vdev_spa; 1161560e6e96Seschrock nvlist_t *label; 1162e14bb325SJeff Bonwick uint64_t guid, top_guid; 1163560e6e96Seschrock uint64_t state; 1164560e6e96Seschrock 1165*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 1166560e6e96Seschrock if (vdev_validate(vd->vdev_child[c]) != 0) 11670bf246f5Smc return (EBADF); 1168560e6e96Seschrock 1169b5989ec7Seschrock /* 1170b5989ec7Seschrock * If the device has already failed, or was marked offline, don't do 1171b5989ec7Seschrock * any further validation. Otherwise, label I/O will fail and we will 1172b5989ec7Seschrock * overwrite the previous state. 1173b5989ec7Seschrock */ 1174e14bb325SJeff Bonwick if (vd->vdev_ops->vdev_op_leaf && vdev_readable(vd)) { 1175560e6e96Seschrock 1176560e6e96Seschrock if ((label = vdev_label_read_config(vd)) == NULL) { 1177560e6e96Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1178560e6e96Seschrock VDEV_AUX_BAD_LABEL); 1179560e6e96Seschrock return (0); 1180560e6e96Seschrock } 1181560e6e96Seschrock 1182560e6e96Seschrock if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_GUID, 1183560e6e96Seschrock &guid) != 0 || guid != spa_guid(spa)) { 1184560e6e96Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 1185560e6e96Seschrock VDEV_AUX_CORRUPT_DATA); 1186560e6e96Seschrock nvlist_free(label); 1187560e6e96Seschrock return (0); 1188560e6e96Seschrock } 1189560e6e96Seschrock 1190e14bb325SJeff Bonwick /* 1191e14bb325SJeff Bonwick * If this vdev just became a top-level vdev because its 1192e14bb325SJeff Bonwick * sibling was detached, it will have adopted the parent's 1193e14bb325SJeff Bonwick * vdev guid -- but the label may or may not be on disk yet. 1194e14bb325SJeff Bonwick * Fortunately, either version of the label will have the 1195e14bb325SJeff Bonwick * same top guid, so if we're a top-level vdev, we can 1196e14bb325SJeff Bonwick * safely compare to that instead. 1197e14bb325SJeff Bonwick */ 1198560e6e96Seschrock if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, 1199e14bb325SJeff Bonwick &guid) != 0 || 1200e14bb325SJeff Bonwick nvlist_lookup_uint64(label, ZPOOL_CONFIG_TOP_GUID, 1201e14bb325SJeff Bonwick &top_guid) != 0 || 1202e14bb325SJeff Bonwick (vd->vdev_guid != guid && 1203e14bb325SJeff Bonwick (vd->vdev_guid != top_guid || vd != vd->vdev_top))) { 1204560e6e96Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 1205560e6e96Seschrock VDEV_AUX_CORRUPT_DATA); 1206560e6e96Seschrock nvlist_free(label); 1207560e6e96Seschrock return (0); 1208560e6e96Seschrock } 1209560e6e96Seschrock 1210560e6e96Seschrock if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, 1211560e6e96Seschrock &state) != 0) { 1212560e6e96Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 1213560e6e96Seschrock VDEV_AUX_CORRUPT_DATA); 1214560e6e96Seschrock nvlist_free(label); 1215560e6e96Seschrock return (0); 1216560e6e96Seschrock } 1217560e6e96Seschrock 1218560e6e96Seschrock nvlist_free(label); 1219560e6e96Seschrock 1220560e6e96Seschrock if (spa->spa_load_state == SPA_LOAD_OPEN && 1221560e6e96Seschrock state != POOL_STATE_ACTIVE) 12220bf246f5Smc return (EBADF); 1223560e6e96Seschrock 122451ece835Seschrock /* 122551ece835Seschrock * If we were able to open and validate a vdev that was 122651ece835Seschrock * previously marked permanently unavailable, clear that state 122751ece835Seschrock * now. 122851ece835Seschrock */ 122951ece835Seschrock if (vd->vdev_not_present) 123051ece835Seschrock vd->vdev_not_present = 0; 123151ece835Seschrock } 1232560e6e96Seschrock 1233560e6e96Seschrock return (0); 1234560e6e96Seschrock } 1235560e6e96Seschrock 1236fa9e4066Sahrens /* 1237fa9e4066Sahrens * Close a virtual device. 1238fa9e4066Sahrens */ 1239fa9e4066Sahrens void 1240fa9e4066Sahrens vdev_close(vdev_t *vd) 1241fa9e4066Sahrens { 12428ad4d6ddSJeff Bonwick spa_t *spa = vd->vdev_spa; 12438ad4d6ddSJeff Bonwick 12448ad4d6ddSJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 12458ad4d6ddSJeff Bonwick 1246fa9e4066Sahrens vd->vdev_ops->vdev_op_close(vd); 1247fa9e4066Sahrens 12483d7072f8Seschrock vdev_cache_purge(vd); 1249fa9e4066Sahrens 1250560e6e96Seschrock /* 1251*573ca77eSGeorge Wilson * We record the previous state before we close it, so that if we are 1252560e6e96Seschrock * doing a reopen(), we don't generate FMA ereports if we notice that 1253560e6e96Seschrock * it's still faulted. 1254560e6e96Seschrock */ 1255560e6e96Seschrock vd->vdev_prevstate = vd->vdev_state; 1256560e6e96Seschrock 1257fa9e4066Sahrens if (vd->vdev_offline) 1258fa9e4066Sahrens vd->vdev_state = VDEV_STATE_OFFLINE; 1259fa9e4066Sahrens else 1260fa9e4066Sahrens vd->vdev_state = VDEV_STATE_CLOSED; 1261ea8dc4b6Seschrock vd->vdev_stat.vs_aux = VDEV_AUX_NONE; 1262fa9e4066Sahrens } 1263fa9e4066Sahrens 1264fa9e4066Sahrens void 1265ea8dc4b6Seschrock vdev_reopen(vdev_t *vd) 1266fa9e4066Sahrens { 1267ea8dc4b6Seschrock spa_t *spa = vd->vdev_spa; 1268fa9e4066Sahrens 1269e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 1270ea8dc4b6Seschrock 1271fa9e4066Sahrens vdev_close(vd); 1272fa9e4066Sahrens (void) vdev_open(vd); 1273fa9e4066Sahrens 127439c23413Seschrock /* 127539c23413Seschrock * Call vdev_validate() here to make sure we have the same device. 127639c23413Seschrock * Otherwise, a device with an invalid label could be successfully 127739c23413Seschrock * opened in response to vdev_reopen(). 127839c23413Seschrock */ 1279c5904d13Seschrock if (vd->vdev_aux) { 1280c5904d13Seschrock (void) vdev_validate_aux(vd); 1281e14bb325SJeff Bonwick if (vdev_readable(vd) && vdev_writeable(vd) && 12826809eb4eSEric Schrock vd->vdev_aux == &spa->spa_l2cache && 1283*573ca77eSGeorge Wilson !l2arc_vdev_present(vd)) 1284*573ca77eSGeorge Wilson l2arc_add_vdev(spa, vd); 1285c5904d13Seschrock } else { 1286c5904d13Seschrock (void) vdev_validate(vd); 1287c5904d13Seschrock } 128839c23413Seschrock 1289fa9e4066Sahrens /* 12903d7072f8Seschrock * Reassess parent vdev's health. 1291fa9e4066Sahrens */ 12923d7072f8Seschrock vdev_propagate_state(vd); 1293fa9e4066Sahrens } 1294fa9e4066Sahrens 1295fa9e4066Sahrens int 129699653d4eSeschrock vdev_create(vdev_t *vd, uint64_t txg, boolean_t isreplacing) 1297fa9e4066Sahrens { 1298fa9e4066Sahrens int error; 1299fa9e4066Sahrens 1300fa9e4066Sahrens /* 1301fa9e4066Sahrens * Normally, partial opens (e.g. of a mirror) are allowed. 1302fa9e4066Sahrens * For a create, however, we want to fail the request if 1303fa9e4066Sahrens * there are any components we can't open. 1304fa9e4066Sahrens */ 1305fa9e4066Sahrens error = vdev_open(vd); 1306fa9e4066Sahrens 1307fa9e4066Sahrens if (error || vd->vdev_state != VDEV_STATE_HEALTHY) { 1308fa9e4066Sahrens vdev_close(vd); 1309fa9e4066Sahrens return (error ? error : ENXIO); 1310fa9e4066Sahrens } 1311fa9e4066Sahrens 1312fa9e4066Sahrens /* 1313fa9e4066Sahrens * Recursively initialize all labels. 1314fa9e4066Sahrens */ 131539c23413Seschrock if ((error = vdev_label_init(vd, txg, isreplacing ? 131639c23413Seschrock VDEV_LABEL_REPLACE : VDEV_LABEL_CREATE)) != 0) { 1317fa9e4066Sahrens vdev_close(vd); 1318fa9e4066Sahrens return (error); 1319fa9e4066Sahrens } 1320fa9e4066Sahrens 1321fa9e4066Sahrens return (0); 1322fa9e4066Sahrens } 1323fa9e4066Sahrens 13240e34b6a7Sbonwick void 1325*573ca77eSGeorge Wilson vdev_metaslab_set_size(vdev_t *vd) 1326fa9e4066Sahrens { 1327fa9e4066Sahrens /* 1328fa9e4066Sahrens * Aim for roughly 200 metaslabs per vdev. 1329fa9e4066Sahrens */ 1330fa9e4066Sahrens vd->vdev_ms_shift = highbit(vd->vdev_asize / 200); 1331fa9e4066Sahrens vd->vdev_ms_shift = MAX(vd->vdev_ms_shift, SPA_MAXBLOCKSHIFT); 1332fa9e4066Sahrens } 1333fa9e4066Sahrens 1334fa9e4066Sahrens void 1335ecc2d604Sbonwick vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg) 1336fa9e4066Sahrens { 1337ecc2d604Sbonwick ASSERT(vd == vd->vdev_top); 1338ecc2d604Sbonwick ASSERT(ISP2(flags)); 1339fa9e4066Sahrens 1340ecc2d604Sbonwick if (flags & VDD_METASLAB) 1341ecc2d604Sbonwick (void) txg_list_add(&vd->vdev_ms_list, arg, txg); 1342ecc2d604Sbonwick 1343ecc2d604Sbonwick if (flags & VDD_DTL) 1344ecc2d604Sbonwick (void) txg_list_add(&vd->vdev_dtl_list, arg, txg); 1345ecc2d604Sbonwick 1346ecc2d604Sbonwick (void) txg_list_add(&vd->vdev_spa->spa_vdev_txg_list, vd, txg); 1347fa9e4066Sahrens } 1348fa9e4066Sahrens 13498ad4d6ddSJeff Bonwick /* 13508ad4d6ddSJeff Bonwick * DTLs. 13518ad4d6ddSJeff Bonwick * 13528ad4d6ddSJeff Bonwick * A vdev's DTL (dirty time log) is the set of transaction groups for which 13538ad4d6ddSJeff Bonwick * the vdev has less than perfect replication. There are three kinds of DTL: 13548ad4d6ddSJeff Bonwick * 13558ad4d6ddSJeff Bonwick * DTL_MISSING: txgs for which the vdev has no valid copies of the data 13568ad4d6ddSJeff Bonwick * 13578ad4d6ddSJeff Bonwick * DTL_PARTIAL: txgs for which data is available, but not fully replicated 13588ad4d6ddSJeff Bonwick * 13598ad4d6ddSJeff Bonwick * DTL_SCRUB: the txgs that could not be repaired by the last scrub; upon 13608ad4d6ddSJeff Bonwick * scrub completion, DTL_SCRUB replaces DTL_MISSING in the range of 13618ad4d6ddSJeff Bonwick * txgs that was scrubbed. 13628ad4d6ddSJeff Bonwick * 13638ad4d6ddSJeff Bonwick * DTL_OUTAGE: txgs which cannot currently be read, whether due to 13648ad4d6ddSJeff Bonwick * persistent errors or just some device being offline. 13658ad4d6ddSJeff Bonwick * Unlike the other three, the DTL_OUTAGE map is not generally 13668ad4d6ddSJeff Bonwick * maintained; it's only computed when needed, typically to 13678ad4d6ddSJeff Bonwick * determine whether a device can be detached. 13688ad4d6ddSJeff Bonwick * 13698ad4d6ddSJeff Bonwick * For leaf vdevs, DTL_MISSING and DTL_PARTIAL are identical: the device 13708ad4d6ddSJeff Bonwick * either has the data or it doesn't. 13718ad4d6ddSJeff Bonwick * 13728ad4d6ddSJeff Bonwick * For interior vdevs such as mirror and RAID-Z the picture is more complex. 13738ad4d6ddSJeff Bonwick * A vdev's DTL_PARTIAL is the union of its children's DTL_PARTIALs, because 13748ad4d6ddSJeff Bonwick * if any child is less than fully replicated, then so is its parent. 13758ad4d6ddSJeff Bonwick * A vdev's DTL_MISSING is a modified union of its children's DTL_MISSINGs, 13768ad4d6ddSJeff Bonwick * comprising only those txgs which appear in 'maxfaults' or more children; 13778ad4d6ddSJeff Bonwick * those are the txgs we don't have enough replication to read. For example, 13788ad4d6ddSJeff Bonwick * double-parity RAID-Z can tolerate up to two missing devices (maxfaults == 2); 13798ad4d6ddSJeff Bonwick * thus, its DTL_MISSING consists of the set of txgs that appear in more than 13808ad4d6ddSJeff Bonwick * two child DTL_MISSING maps. 13818ad4d6ddSJeff Bonwick * 13828ad4d6ddSJeff Bonwick * It should be clear from the above that to compute the DTLs and outage maps 13838ad4d6ddSJeff Bonwick * for all vdevs, it suffices to know just the leaf vdevs' DTL_MISSING maps. 13848ad4d6ddSJeff Bonwick * Therefore, that is all we keep on disk. When loading the pool, or after 13858ad4d6ddSJeff Bonwick * a configuration change, we generate all other DTLs from first principles. 13868ad4d6ddSJeff Bonwick */ 1387fa9e4066Sahrens void 13888ad4d6ddSJeff Bonwick vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) 1389fa9e4066Sahrens { 13908ad4d6ddSJeff Bonwick space_map_t *sm = &vd->vdev_dtl[t]; 13918ad4d6ddSJeff Bonwick 13928ad4d6ddSJeff Bonwick ASSERT(t < DTL_TYPES); 13938ad4d6ddSJeff Bonwick ASSERT(vd != vd->vdev_spa->spa_root_vdev); 13948ad4d6ddSJeff Bonwick 1395fa9e4066Sahrens mutex_enter(sm->sm_lock); 1396fa9e4066Sahrens if (!space_map_contains(sm, txg, size)) 1397fa9e4066Sahrens space_map_add(sm, txg, size); 1398fa9e4066Sahrens mutex_exit(sm->sm_lock); 1399fa9e4066Sahrens } 1400fa9e4066Sahrens 14018ad4d6ddSJeff Bonwick boolean_t 14028ad4d6ddSJeff Bonwick vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) 1403fa9e4066Sahrens { 14048ad4d6ddSJeff Bonwick space_map_t *sm = &vd->vdev_dtl[t]; 14058ad4d6ddSJeff Bonwick boolean_t dirty = B_FALSE; 1406fa9e4066Sahrens 14078ad4d6ddSJeff Bonwick ASSERT(t < DTL_TYPES); 14088ad4d6ddSJeff Bonwick ASSERT(vd != vd->vdev_spa->spa_root_vdev); 1409fa9e4066Sahrens 1410fa9e4066Sahrens mutex_enter(sm->sm_lock); 14118ad4d6ddSJeff Bonwick if (sm->sm_space != 0) 14128ad4d6ddSJeff Bonwick dirty = space_map_contains(sm, txg, size); 1413fa9e4066Sahrens mutex_exit(sm->sm_lock); 1414fa9e4066Sahrens 1415fa9e4066Sahrens return (dirty); 1416fa9e4066Sahrens } 1417fa9e4066Sahrens 14188ad4d6ddSJeff Bonwick boolean_t 14198ad4d6ddSJeff Bonwick vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t t) 14208ad4d6ddSJeff Bonwick { 14218ad4d6ddSJeff Bonwick space_map_t *sm = &vd->vdev_dtl[t]; 14228ad4d6ddSJeff Bonwick boolean_t empty; 14238ad4d6ddSJeff Bonwick 14248ad4d6ddSJeff Bonwick mutex_enter(sm->sm_lock); 14258ad4d6ddSJeff Bonwick empty = (sm->sm_space == 0); 14268ad4d6ddSJeff Bonwick mutex_exit(sm->sm_lock); 14278ad4d6ddSJeff Bonwick 14288ad4d6ddSJeff Bonwick return (empty); 14298ad4d6ddSJeff Bonwick } 14308ad4d6ddSJeff Bonwick 1431fa9e4066Sahrens /* 1432fa9e4066Sahrens * Reassess DTLs after a config change or scrub completion. 1433fa9e4066Sahrens */ 1434fa9e4066Sahrens void 1435fa9e4066Sahrens vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, int scrub_done) 1436fa9e4066Sahrens { 1437ea8dc4b6Seschrock spa_t *spa = vd->vdev_spa; 14388ad4d6ddSJeff Bonwick avl_tree_t reftree; 14398ad4d6ddSJeff Bonwick int minref; 1440fa9e4066Sahrens 14418ad4d6ddSJeff Bonwick ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 1442fa9e4066Sahrens 14438ad4d6ddSJeff Bonwick for (int c = 0; c < vd->vdev_children; c++) 14448ad4d6ddSJeff Bonwick vdev_dtl_reassess(vd->vdev_child[c], txg, 14458ad4d6ddSJeff Bonwick scrub_txg, scrub_done); 14468ad4d6ddSJeff Bonwick 14478ad4d6ddSJeff Bonwick if (vd == spa->spa_root_vdev) 14488ad4d6ddSJeff Bonwick return; 14498ad4d6ddSJeff Bonwick 14508ad4d6ddSJeff Bonwick if (vd->vdev_ops->vdev_op_leaf) { 1451fa9e4066Sahrens mutex_enter(&vd->vdev_dtl_lock); 1452088f3894Sahrens if (scrub_txg != 0 && 1453088f3894Sahrens (spa->spa_scrub_started || spa->spa_scrub_errors == 0)) { 1454088f3894Sahrens /* XXX should check scrub_done? */ 1455088f3894Sahrens /* 1456088f3894Sahrens * We completed a scrub up to scrub_txg. If we 1457088f3894Sahrens * did it without rebooting, then the scrub dtl 1458088f3894Sahrens * will be valid, so excise the old region and 1459088f3894Sahrens * fold in the scrub dtl. Otherwise, leave the 1460088f3894Sahrens * dtl as-is if there was an error. 14618ad4d6ddSJeff Bonwick * 14628ad4d6ddSJeff Bonwick * There's little trick here: to excise the beginning 14638ad4d6ddSJeff Bonwick * of the DTL_MISSING map, we put it into a reference 14648ad4d6ddSJeff Bonwick * tree and then add a segment with refcnt -1 that 14658ad4d6ddSJeff Bonwick * covers the range [0, scrub_txg). This means 14668ad4d6ddSJeff Bonwick * that each txg in that range has refcnt -1 or 0. 14678ad4d6ddSJeff Bonwick * We then add DTL_SCRUB with a refcnt of 2, so that 14688ad4d6ddSJeff Bonwick * entries in the range [0, scrub_txg) will have a 14698ad4d6ddSJeff Bonwick * positive refcnt -- either 1 or 2. We then convert 14708ad4d6ddSJeff Bonwick * the reference tree into the new DTL_MISSING map. 1471088f3894Sahrens */ 14728ad4d6ddSJeff Bonwick space_map_ref_create(&reftree); 14738ad4d6ddSJeff Bonwick space_map_ref_add_map(&reftree, 14748ad4d6ddSJeff Bonwick &vd->vdev_dtl[DTL_MISSING], 1); 14758ad4d6ddSJeff Bonwick space_map_ref_add_seg(&reftree, 0, scrub_txg, -1); 14768ad4d6ddSJeff Bonwick space_map_ref_add_map(&reftree, 14778ad4d6ddSJeff Bonwick &vd->vdev_dtl[DTL_SCRUB], 2); 14788ad4d6ddSJeff Bonwick space_map_ref_generate_map(&reftree, 14798ad4d6ddSJeff Bonwick &vd->vdev_dtl[DTL_MISSING], 1); 14808ad4d6ddSJeff Bonwick space_map_ref_destroy(&reftree); 1481fa9e4066Sahrens } 14828ad4d6ddSJeff Bonwick space_map_vacate(&vd->vdev_dtl[DTL_PARTIAL], NULL, NULL); 14838ad4d6ddSJeff Bonwick space_map_walk(&vd->vdev_dtl[DTL_MISSING], 14848ad4d6ddSJeff Bonwick space_map_add, &vd->vdev_dtl[DTL_PARTIAL]); 1485fa9e4066Sahrens if (scrub_done) 14868ad4d6ddSJeff Bonwick space_map_vacate(&vd->vdev_dtl[DTL_SCRUB], NULL, NULL); 14878ad4d6ddSJeff Bonwick space_map_vacate(&vd->vdev_dtl[DTL_OUTAGE], NULL, NULL); 14888ad4d6ddSJeff Bonwick if (!vdev_readable(vd)) 14898ad4d6ddSJeff Bonwick space_map_add(&vd->vdev_dtl[DTL_OUTAGE], 0, -1ULL); 14908ad4d6ddSJeff Bonwick else 14918ad4d6ddSJeff Bonwick space_map_walk(&vd->vdev_dtl[DTL_MISSING], 14928ad4d6ddSJeff Bonwick space_map_add, &vd->vdev_dtl[DTL_OUTAGE]); 1493fa9e4066Sahrens mutex_exit(&vd->vdev_dtl_lock); 1494088f3894Sahrens 1495ecc2d604Sbonwick if (txg != 0) 1496ecc2d604Sbonwick vdev_dirty(vd->vdev_top, VDD_DTL, vd, txg); 1497fa9e4066Sahrens return; 1498fa9e4066Sahrens } 1499fa9e4066Sahrens 1500fa9e4066Sahrens mutex_enter(&vd->vdev_dtl_lock); 15018ad4d6ddSJeff Bonwick for (int t = 0; t < DTL_TYPES; t++) { 15028ad4d6ddSJeff Bonwick if (t == DTL_SCRUB) 15038ad4d6ddSJeff Bonwick continue; /* leaf vdevs only */ 15048ad4d6ddSJeff Bonwick if (t == DTL_PARTIAL) 15058ad4d6ddSJeff Bonwick minref = 1; /* i.e. non-zero */ 15068ad4d6ddSJeff Bonwick else if (vd->vdev_nparity != 0) 15078ad4d6ddSJeff Bonwick minref = vd->vdev_nparity + 1; /* RAID-Z */ 15088ad4d6ddSJeff Bonwick else 15098ad4d6ddSJeff Bonwick minref = vd->vdev_children; /* any kind of mirror */ 15108ad4d6ddSJeff Bonwick space_map_ref_create(&reftree); 15118ad4d6ddSJeff Bonwick for (int c = 0; c < vd->vdev_children; c++) { 15128ad4d6ddSJeff Bonwick vdev_t *cvd = vd->vdev_child[c]; 15138ad4d6ddSJeff Bonwick mutex_enter(&cvd->vdev_dtl_lock); 15148ad4d6ddSJeff Bonwick space_map_ref_add_map(&reftree, &cvd->vdev_dtl[t], 1); 15158ad4d6ddSJeff Bonwick mutex_exit(&cvd->vdev_dtl_lock); 15168ad4d6ddSJeff Bonwick } 15178ad4d6ddSJeff Bonwick space_map_ref_generate_map(&reftree, &vd->vdev_dtl[t], minref); 15188ad4d6ddSJeff Bonwick space_map_ref_destroy(&reftree); 1519fa9e4066Sahrens } 15208ad4d6ddSJeff Bonwick mutex_exit(&vd->vdev_dtl_lock); 1521fa9e4066Sahrens } 1522fa9e4066Sahrens 1523fa9e4066Sahrens static int 1524fa9e4066Sahrens vdev_dtl_load(vdev_t *vd) 1525fa9e4066Sahrens { 1526fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 15278ad4d6ddSJeff Bonwick space_map_obj_t *smo = &vd->vdev_dtl_smo; 1528ecc2d604Sbonwick objset_t *mos = spa->spa_meta_objset; 1529fa9e4066Sahrens dmu_buf_t *db; 1530fa9e4066Sahrens int error; 1531fa9e4066Sahrens 1532fa9e4066Sahrens ASSERT(vd->vdev_children == 0); 1533fa9e4066Sahrens 1534fa9e4066Sahrens if (smo->smo_object == 0) 1535fa9e4066Sahrens return (0); 1536fa9e4066Sahrens 1537ecc2d604Sbonwick if ((error = dmu_bonus_hold(mos, smo->smo_object, FTAG, &db)) != 0) 1538ea8dc4b6Seschrock return (error); 1539ecc2d604Sbonwick 15401934e92fSmaybee ASSERT3U(db->db_size, >=, sizeof (*smo)); 15411934e92fSmaybee bcopy(db->db_data, smo, sizeof (*smo)); 1542ea8dc4b6Seschrock dmu_buf_rele(db, FTAG); 1543fa9e4066Sahrens 1544fa9e4066Sahrens mutex_enter(&vd->vdev_dtl_lock); 15458ad4d6ddSJeff Bonwick error = space_map_load(&vd->vdev_dtl[DTL_MISSING], 15468ad4d6ddSJeff Bonwick NULL, SM_ALLOC, smo, mos); 1547fa9e4066Sahrens mutex_exit(&vd->vdev_dtl_lock); 1548fa9e4066Sahrens 1549fa9e4066Sahrens return (error); 1550fa9e4066Sahrens } 1551fa9e4066Sahrens 1552fa9e4066Sahrens void 1553fa9e4066Sahrens vdev_dtl_sync(vdev_t *vd, uint64_t txg) 1554fa9e4066Sahrens { 1555fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 15568ad4d6ddSJeff Bonwick space_map_obj_t *smo = &vd->vdev_dtl_smo; 15578ad4d6ddSJeff Bonwick space_map_t *sm = &vd->vdev_dtl[DTL_MISSING]; 1558ecc2d604Sbonwick objset_t *mos = spa->spa_meta_objset; 1559fa9e4066Sahrens space_map_t smsync; 1560fa9e4066Sahrens kmutex_t smlock; 1561fa9e4066Sahrens dmu_buf_t *db; 1562fa9e4066Sahrens dmu_tx_t *tx; 1563fa9e4066Sahrens 1564fa9e4066Sahrens tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); 1565fa9e4066Sahrens 1566fa9e4066Sahrens if (vd->vdev_detached) { 1567fa9e4066Sahrens if (smo->smo_object != 0) { 1568ecc2d604Sbonwick int err = dmu_object_free(mos, smo->smo_object, tx); 1569fa9e4066Sahrens ASSERT3U(err, ==, 0); 1570fa9e4066Sahrens smo->smo_object = 0; 1571fa9e4066Sahrens } 1572fa9e4066Sahrens dmu_tx_commit(tx); 1573fa9e4066Sahrens return; 1574fa9e4066Sahrens } 1575fa9e4066Sahrens 1576fa9e4066Sahrens if (smo->smo_object == 0) { 1577fa9e4066Sahrens ASSERT(smo->smo_objsize == 0); 1578fa9e4066Sahrens ASSERT(smo->smo_alloc == 0); 1579ecc2d604Sbonwick smo->smo_object = dmu_object_alloc(mos, 1580fa9e4066Sahrens DMU_OT_SPACE_MAP, 1 << SPACE_MAP_BLOCKSHIFT, 1581fa9e4066Sahrens DMU_OT_SPACE_MAP_HEADER, sizeof (*smo), tx); 1582fa9e4066Sahrens ASSERT(smo->smo_object != 0); 1583fa9e4066Sahrens vdev_config_dirty(vd->vdev_top); 1584fa9e4066Sahrens } 1585fa9e4066Sahrens 1586fa9e4066Sahrens mutex_init(&smlock, NULL, MUTEX_DEFAULT, NULL); 1587fa9e4066Sahrens 1588fa9e4066Sahrens space_map_create(&smsync, sm->sm_start, sm->sm_size, sm->sm_shift, 1589fa9e4066Sahrens &smlock); 1590fa9e4066Sahrens 1591fa9e4066Sahrens mutex_enter(&smlock); 1592fa9e4066Sahrens 1593fa9e4066Sahrens mutex_enter(&vd->vdev_dtl_lock); 1594ecc2d604Sbonwick space_map_walk(sm, space_map_add, &smsync); 1595fa9e4066Sahrens mutex_exit(&vd->vdev_dtl_lock); 1596fa9e4066Sahrens 1597ecc2d604Sbonwick space_map_truncate(smo, mos, tx); 1598ecc2d604Sbonwick space_map_sync(&smsync, SM_ALLOC, smo, mos, tx); 1599fa9e4066Sahrens 1600fa9e4066Sahrens space_map_destroy(&smsync); 1601fa9e4066Sahrens 1602fa9e4066Sahrens mutex_exit(&smlock); 1603fa9e4066Sahrens mutex_destroy(&smlock); 1604fa9e4066Sahrens 1605ecc2d604Sbonwick VERIFY(0 == dmu_bonus_hold(mos, smo->smo_object, FTAG, &db)); 1606fa9e4066Sahrens dmu_buf_will_dirty(db, tx); 16071934e92fSmaybee ASSERT3U(db->db_size, >=, sizeof (*smo)); 16081934e92fSmaybee bcopy(smo, db->db_data, sizeof (*smo)); 1609ea8dc4b6Seschrock dmu_buf_rele(db, FTAG); 1610fa9e4066Sahrens 1611fa9e4066Sahrens dmu_tx_commit(tx); 1612fa9e4066Sahrens } 1613fa9e4066Sahrens 16148ad4d6ddSJeff Bonwick /* 16158ad4d6ddSJeff Bonwick * Determine whether the specified vdev can be offlined/detached/removed 16168ad4d6ddSJeff Bonwick * without losing data. 16178ad4d6ddSJeff Bonwick */ 16188ad4d6ddSJeff Bonwick boolean_t 16198ad4d6ddSJeff Bonwick vdev_dtl_required(vdev_t *vd) 16208ad4d6ddSJeff Bonwick { 16218ad4d6ddSJeff Bonwick spa_t *spa = vd->vdev_spa; 16228ad4d6ddSJeff Bonwick vdev_t *tvd = vd->vdev_top; 16238ad4d6ddSJeff Bonwick uint8_t cant_read = vd->vdev_cant_read; 16248ad4d6ddSJeff Bonwick boolean_t required; 16258ad4d6ddSJeff Bonwick 16268ad4d6ddSJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 16278ad4d6ddSJeff Bonwick 16288ad4d6ddSJeff Bonwick if (vd == spa->spa_root_vdev || vd == tvd) 16298ad4d6ddSJeff Bonwick return (B_TRUE); 16308ad4d6ddSJeff Bonwick 16318ad4d6ddSJeff Bonwick /* 16328ad4d6ddSJeff Bonwick * Temporarily mark the device as unreadable, and then determine 16338ad4d6ddSJeff Bonwick * whether this results in any DTL outages in the top-level vdev. 16348ad4d6ddSJeff Bonwick * If not, we can safely offline/detach/remove the device. 16358ad4d6ddSJeff Bonwick */ 16368ad4d6ddSJeff Bonwick vd->vdev_cant_read = B_TRUE; 16378ad4d6ddSJeff Bonwick vdev_dtl_reassess(tvd, 0, 0, B_FALSE); 16388ad4d6ddSJeff Bonwick required = !vdev_dtl_empty(tvd, DTL_OUTAGE); 16398ad4d6ddSJeff Bonwick vd->vdev_cant_read = cant_read; 16408ad4d6ddSJeff Bonwick vdev_dtl_reassess(tvd, 0, 0, B_FALSE); 16418ad4d6ddSJeff Bonwick 16428ad4d6ddSJeff Bonwick return (required); 16438ad4d6ddSJeff Bonwick } 16448ad4d6ddSJeff Bonwick 1645088f3894Sahrens /* 1646088f3894Sahrens * Determine if resilver is needed, and if so the txg range. 1647088f3894Sahrens */ 1648088f3894Sahrens boolean_t 1649088f3894Sahrens vdev_resilver_needed(vdev_t *vd, uint64_t *minp, uint64_t *maxp) 1650088f3894Sahrens { 1651088f3894Sahrens boolean_t needed = B_FALSE; 1652088f3894Sahrens uint64_t thismin = UINT64_MAX; 1653088f3894Sahrens uint64_t thismax = 0; 1654088f3894Sahrens 1655088f3894Sahrens if (vd->vdev_children == 0) { 1656088f3894Sahrens mutex_enter(&vd->vdev_dtl_lock); 16578ad4d6ddSJeff Bonwick if (vd->vdev_dtl[DTL_MISSING].sm_space != 0 && 16588ad4d6ddSJeff Bonwick vdev_writeable(vd)) { 1659088f3894Sahrens space_seg_t *ss; 1660088f3894Sahrens 16618ad4d6ddSJeff Bonwick ss = avl_first(&vd->vdev_dtl[DTL_MISSING].sm_root); 1662088f3894Sahrens thismin = ss->ss_start - 1; 16638ad4d6ddSJeff Bonwick ss = avl_last(&vd->vdev_dtl[DTL_MISSING].sm_root); 1664088f3894Sahrens thismax = ss->ss_end; 1665088f3894Sahrens needed = B_TRUE; 1666088f3894Sahrens } 1667088f3894Sahrens mutex_exit(&vd->vdev_dtl_lock); 1668088f3894Sahrens } else { 16698ad4d6ddSJeff Bonwick for (int c = 0; c < vd->vdev_children; c++) { 1670088f3894Sahrens vdev_t *cvd = vd->vdev_child[c]; 1671088f3894Sahrens uint64_t cmin, cmax; 1672088f3894Sahrens 1673088f3894Sahrens if (vdev_resilver_needed(cvd, &cmin, &cmax)) { 1674088f3894Sahrens thismin = MIN(thismin, cmin); 1675088f3894Sahrens thismax = MAX(thismax, cmax); 1676088f3894Sahrens needed = B_TRUE; 1677088f3894Sahrens } 1678088f3894Sahrens } 1679088f3894Sahrens } 1680088f3894Sahrens 1681088f3894Sahrens if (needed && minp) { 1682088f3894Sahrens *minp = thismin; 1683088f3894Sahrens *maxp = thismax; 1684088f3894Sahrens } 1685088f3894Sahrens return (needed); 1686088f3894Sahrens } 1687088f3894Sahrens 1688560e6e96Seschrock void 1689ea8dc4b6Seschrock vdev_load(vdev_t *vd) 1690fa9e4066Sahrens { 1691fa9e4066Sahrens /* 1692fa9e4066Sahrens * Recursively load all children. 1693fa9e4066Sahrens */ 16948ad4d6ddSJeff Bonwick for (int c = 0; c < vd->vdev_children; c++) 1695560e6e96Seschrock vdev_load(vd->vdev_child[c]); 1696fa9e4066Sahrens 1697fa9e4066Sahrens /* 16980e34b6a7Sbonwick * If this is a top-level vdev, initialize its metaslabs. 1699fa9e4066Sahrens */ 1700560e6e96Seschrock if (vd == vd->vdev_top && 1701560e6e96Seschrock (vd->vdev_ashift == 0 || vd->vdev_asize == 0 || 1702560e6e96Seschrock vdev_metaslab_init(vd, 0) != 0)) 1703560e6e96Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 1704560e6e96Seschrock VDEV_AUX_CORRUPT_DATA); 1705fa9e4066Sahrens 1706fa9e4066Sahrens /* 1707fa9e4066Sahrens * If this is a leaf vdev, load its DTL. 1708fa9e4066Sahrens */ 1709560e6e96Seschrock if (vd->vdev_ops->vdev_op_leaf && vdev_dtl_load(vd) != 0) 1710560e6e96Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 1711560e6e96Seschrock VDEV_AUX_CORRUPT_DATA); 1712fa9e4066Sahrens } 1713fa9e4066Sahrens 171499653d4eSeschrock /* 1715fa94a07fSbrendan * The special vdev case is used for hot spares and l2cache devices. Its 1716fa94a07fSbrendan * sole purpose it to set the vdev state for the associated vdev. To do this, 1717fa94a07fSbrendan * we make sure that we can open the underlying device, then try to read the 1718fa94a07fSbrendan * label, and make sure that the label is sane and that it hasn't been 1719fa94a07fSbrendan * repurposed to another pool. 172099653d4eSeschrock */ 172199653d4eSeschrock int 1722fa94a07fSbrendan vdev_validate_aux(vdev_t *vd) 172399653d4eSeschrock { 172499653d4eSeschrock nvlist_t *label; 172599653d4eSeschrock uint64_t guid, version; 172699653d4eSeschrock uint64_t state; 172799653d4eSeschrock 1728e14bb325SJeff Bonwick if (!vdev_readable(vd)) 1729c5904d13Seschrock return (0); 1730c5904d13Seschrock 173199653d4eSeschrock if ((label = vdev_label_read_config(vd)) == NULL) { 173299653d4eSeschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 173399653d4eSeschrock VDEV_AUX_CORRUPT_DATA); 173499653d4eSeschrock return (-1); 173599653d4eSeschrock } 173699653d4eSeschrock 173799653d4eSeschrock if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_VERSION, &version) != 0 || 1738e7437265Sahrens version > SPA_VERSION || 173999653d4eSeschrock nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0 || 174099653d4eSeschrock guid != vd->vdev_guid || 174199653d4eSeschrock nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, &state) != 0) { 174299653d4eSeschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 174399653d4eSeschrock VDEV_AUX_CORRUPT_DATA); 174499653d4eSeschrock nvlist_free(label); 174599653d4eSeschrock return (-1); 174699653d4eSeschrock } 174799653d4eSeschrock 174899653d4eSeschrock /* 174999653d4eSeschrock * We don't actually check the pool state here. If it's in fact in 175099653d4eSeschrock * use by another pool, we update this fact on the fly when requested. 175199653d4eSeschrock */ 175299653d4eSeschrock nvlist_free(label); 175399653d4eSeschrock return (0); 175499653d4eSeschrock } 175599653d4eSeschrock 1756fa9e4066Sahrens void 1757fa9e4066Sahrens vdev_sync_done(vdev_t *vd, uint64_t txg) 1758fa9e4066Sahrens { 1759fa9e4066Sahrens metaslab_t *msp; 1760fa9e4066Sahrens 1761fa9e4066Sahrens while (msp = txg_list_remove(&vd->vdev_ms_list, TXG_CLEAN(txg))) 1762fa9e4066Sahrens metaslab_sync_done(msp, txg); 1763fa9e4066Sahrens } 1764fa9e4066Sahrens 1765fa9e4066Sahrens void 1766fa9e4066Sahrens vdev_sync(vdev_t *vd, uint64_t txg) 1767fa9e4066Sahrens { 1768fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 1769fa9e4066Sahrens vdev_t *lvd; 1770fa9e4066Sahrens metaslab_t *msp; 1771ecc2d604Sbonwick dmu_tx_t *tx; 1772fa9e4066Sahrens 1773ecc2d604Sbonwick if (vd->vdev_ms_array == 0 && vd->vdev_ms_shift != 0) { 1774ecc2d604Sbonwick ASSERT(vd == vd->vdev_top); 1775ecc2d604Sbonwick tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); 1776ecc2d604Sbonwick vd->vdev_ms_array = dmu_object_alloc(spa->spa_meta_objset, 1777ecc2d604Sbonwick DMU_OT_OBJECT_ARRAY, 0, DMU_OT_NONE, 0, tx); 1778ecc2d604Sbonwick ASSERT(vd->vdev_ms_array != 0); 1779ecc2d604Sbonwick vdev_config_dirty(vd); 1780ecc2d604Sbonwick dmu_tx_commit(tx); 1781ecc2d604Sbonwick } 1782fa9e4066Sahrens 1783ecc2d604Sbonwick while ((msp = txg_list_remove(&vd->vdev_ms_list, txg)) != NULL) { 1784fa9e4066Sahrens metaslab_sync(msp, txg); 1785ecc2d604Sbonwick (void) txg_list_add(&vd->vdev_ms_list, msp, TXG_CLEAN(txg)); 1786ecc2d604Sbonwick } 1787fa9e4066Sahrens 1788fa9e4066Sahrens while ((lvd = txg_list_remove(&vd->vdev_dtl_list, txg)) != NULL) 1789fa9e4066Sahrens vdev_dtl_sync(lvd, txg); 1790fa9e4066Sahrens 1791fa9e4066Sahrens (void) txg_list_add(&spa->spa_vdev_txg_list, vd, TXG_CLEAN(txg)); 1792fa9e4066Sahrens } 1793fa9e4066Sahrens 1794fa9e4066Sahrens uint64_t 1795fa9e4066Sahrens vdev_psize_to_asize(vdev_t *vd, uint64_t psize) 1796fa9e4066Sahrens { 1797fa9e4066Sahrens return (vd->vdev_ops->vdev_op_asize(vd, psize)); 1798fa9e4066Sahrens } 1799fa9e4066Sahrens 18003d7072f8Seschrock /* 18013d7072f8Seschrock * Mark the given vdev faulted. A faulted vdev behaves as if the device could 18023d7072f8Seschrock * not be opened, and no I/O is attempted. 18033d7072f8Seschrock */ 1804fa9e4066Sahrens int 18053d7072f8Seschrock vdev_fault(spa_t *spa, uint64_t guid) 1806fa9e4066Sahrens { 1807c5904d13Seschrock vdev_t *vd; 1808fa9e4066Sahrens 1809e14bb325SJeff Bonwick spa_vdev_state_enter(spa); 1810fa9e4066Sahrens 1811c5904d13Seschrock if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) 1812e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENODEV)); 1813e14bb325SJeff Bonwick 18143d7072f8Seschrock if (!vd->vdev_ops->vdev_op_leaf) 1815e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); 1816fa9e4066Sahrens 18173d7072f8Seschrock /* 18183d7072f8Seschrock * Faulted state takes precedence over degraded. 18193d7072f8Seschrock */ 18203d7072f8Seschrock vd->vdev_faulted = 1ULL; 18213d7072f8Seschrock vd->vdev_degraded = 0ULL; 1822e14bb325SJeff Bonwick vdev_set_state(vd, B_FALSE, VDEV_STATE_FAULTED, VDEV_AUX_ERR_EXCEEDED); 18233d7072f8Seschrock 18243d7072f8Seschrock /* 18256988b9faSDavid Marker * If marking the vdev as faulted cause the top-level vdev to become 18263d7072f8Seschrock * unavailable, then back off and simply mark the vdev as degraded 18273d7072f8Seschrock * instead. 18283d7072f8Seschrock */ 1829c5904d13Seschrock if (vdev_is_dead(vd->vdev_top) && vd->vdev_aux == NULL) { 18303d7072f8Seschrock vd->vdev_degraded = 1ULL; 18313d7072f8Seschrock vd->vdev_faulted = 0ULL; 18323d7072f8Seschrock 18333d7072f8Seschrock /* 18343d7072f8Seschrock * If we reopen the device and it's not dead, only then do we 18353d7072f8Seschrock * mark it degraded. 18363d7072f8Seschrock */ 18373d7072f8Seschrock vdev_reopen(vd); 18383d7072f8Seschrock 18390a4e9518Sgw if (vdev_readable(vd)) { 18403d7072f8Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, 18413d7072f8Seschrock VDEV_AUX_ERR_EXCEEDED); 18423d7072f8Seschrock } 18433d7072f8Seschrock } 18443d7072f8Seschrock 1845e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, vd, 0)); 18463d7072f8Seschrock } 18473d7072f8Seschrock 18483d7072f8Seschrock /* 18493d7072f8Seschrock * Mark the given vdev degraded. A degraded vdev is purely an indication to the 18503d7072f8Seschrock * user that something is wrong. The vdev continues to operate as normal as far 18513d7072f8Seschrock * as I/O is concerned. 18523d7072f8Seschrock */ 18533d7072f8Seschrock int 18543d7072f8Seschrock vdev_degrade(spa_t *spa, uint64_t guid) 18553d7072f8Seschrock { 1856c5904d13Seschrock vdev_t *vd; 18570a4e9518Sgw 1858e14bb325SJeff Bonwick spa_vdev_state_enter(spa); 18593d7072f8Seschrock 1860c5904d13Seschrock if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) 1861e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENODEV)); 1862e14bb325SJeff Bonwick 18630e34b6a7Sbonwick if (!vd->vdev_ops->vdev_op_leaf) 1864e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); 18650e34b6a7Sbonwick 18663d7072f8Seschrock /* 18673d7072f8Seschrock * If the vdev is already faulted, then don't do anything. 18683d7072f8Seschrock */ 1869e14bb325SJeff Bonwick if (vd->vdev_faulted || vd->vdev_degraded) 1870e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, 0)); 18713d7072f8Seschrock 18723d7072f8Seschrock vd->vdev_degraded = 1ULL; 18733d7072f8Seschrock if (!vdev_is_dead(vd)) 18743d7072f8Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, 18753d7072f8Seschrock VDEV_AUX_ERR_EXCEEDED); 18763d7072f8Seschrock 1877e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, vd, 0)); 18783d7072f8Seschrock } 18793d7072f8Seschrock 18803d7072f8Seschrock /* 18813d7072f8Seschrock * Online the given vdev. If 'unspare' is set, it implies two things. First, 18823d7072f8Seschrock * any attached spare device should be detached when the device finishes 18833d7072f8Seschrock * resilvering. Second, the online should be treated like a 'test' online case, 18843d7072f8Seschrock * so no FMA events are generated if the device fails to open. 18853d7072f8Seschrock */ 18863d7072f8Seschrock int 1887e14bb325SJeff Bonwick vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, vdev_state_t *newstate) 18883d7072f8Seschrock { 1889*573ca77eSGeorge Wilson vdev_t *vd, *tvd, *pvd, *rvd = spa->spa_root_vdev; 18903d7072f8Seschrock 1891e14bb325SJeff Bonwick spa_vdev_state_enter(spa); 18923d7072f8Seschrock 1893c5904d13Seschrock if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) 1894e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENODEV)); 18953d7072f8Seschrock 18963d7072f8Seschrock if (!vd->vdev_ops->vdev_op_leaf) 1897e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); 1898fa9e4066Sahrens 1899*573ca77eSGeorge Wilson tvd = vd->vdev_top; 1900fa9e4066Sahrens vd->vdev_offline = B_FALSE; 1901441d80aaSlling vd->vdev_tmpoffline = B_FALSE; 1902e14bb325SJeff Bonwick vd->vdev_checkremove = !!(flags & ZFS_ONLINE_CHECKREMOVE); 1903e14bb325SJeff Bonwick vd->vdev_forcefault = !!(flags & ZFS_ONLINE_FORCEFAULT); 1904*573ca77eSGeorge Wilson 1905*573ca77eSGeorge Wilson /* XXX - L2ARC 1.0 does not support expansion */ 1906*573ca77eSGeorge Wilson if (!vd->vdev_aux) { 1907*573ca77eSGeorge Wilson for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) 1908*573ca77eSGeorge Wilson pvd->vdev_expanding = !!(flags & ZFS_ONLINE_EXPAND); 1909*573ca77eSGeorge Wilson } 1910*573ca77eSGeorge Wilson 1911*573ca77eSGeorge Wilson vdev_reopen(tvd); 19123d7072f8Seschrock vd->vdev_checkremove = vd->vdev_forcefault = B_FALSE; 19133d7072f8Seschrock 1914*573ca77eSGeorge Wilson if (!vd->vdev_aux) { 1915*573ca77eSGeorge Wilson for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) 1916*573ca77eSGeorge Wilson pvd->vdev_expanding = B_FALSE; 1917*573ca77eSGeorge Wilson } 1918*573ca77eSGeorge Wilson 19193d7072f8Seschrock if (newstate) 19203d7072f8Seschrock *newstate = vd->vdev_state; 19213d7072f8Seschrock if ((flags & ZFS_ONLINE_UNSPARE) && 19223d7072f8Seschrock !vdev_is_dead(vd) && vd->vdev_parent && 19233d7072f8Seschrock vd->vdev_parent->vdev_ops == &vdev_spare_ops && 19243d7072f8Seschrock vd->vdev_parent->vdev_child[0] == vd) 19253d7072f8Seschrock vd->vdev_unspare = B_TRUE; 1926fa9e4066Sahrens 1927*573ca77eSGeorge Wilson if ((flags & ZFS_ONLINE_EXPAND) || spa->spa_autoexpand) { 1928*573ca77eSGeorge Wilson 1929*573ca77eSGeorge Wilson /* XXX - L2ARC 1.0 does not support expansion */ 1930*573ca77eSGeorge Wilson if (vd->vdev_aux) 1931*573ca77eSGeorge Wilson return (spa_vdev_state_exit(spa, vd, ENOTSUP)); 1932*573ca77eSGeorge Wilson spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); 1933*573ca77eSGeorge Wilson } 19348ad4d6ddSJeff Bonwick return (spa_vdev_state_exit(spa, vd, 0)); 1935fa9e4066Sahrens } 1936fa9e4066Sahrens 1937fa9e4066Sahrens int 19383d7072f8Seschrock vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags) 1939fa9e4066Sahrens { 1940e6ca193dSGeorge Wilson vdev_t *vd, *tvd; 1941e6ca193dSGeorge Wilson int error; 19420a4e9518Sgw 1943e14bb325SJeff Bonwick spa_vdev_state_enter(spa); 1944fa9e4066Sahrens 1945c5904d13Seschrock if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) 1946e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENODEV)); 1947fa9e4066Sahrens 19480e34b6a7Sbonwick if (!vd->vdev_ops->vdev_op_leaf) 1949e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); 19500e34b6a7Sbonwick 1951e6ca193dSGeorge Wilson tvd = vd->vdev_top; 1952e6ca193dSGeorge Wilson 1953fa9e4066Sahrens /* 1954ecc2d604Sbonwick * If the device isn't already offline, try to offline it. 1955fa9e4066Sahrens */ 1956ecc2d604Sbonwick if (!vd->vdev_offline) { 1957ecc2d604Sbonwick /* 19588ad4d6ddSJeff Bonwick * If this device has the only valid copy of some data, 1959e6ca193dSGeorge Wilson * don't allow it to be offlined. Log devices are always 1960e6ca193dSGeorge Wilson * expendable. 1961ecc2d604Sbonwick */ 1962e6ca193dSGeorge Wilson if (!tvd->vdev_islog && vd->vdev_aux == NULL && 1963e6ca193dSGeorge Wilson vdev_dtl_required(vd)) 1964e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, EBUSY)); 1965fa9e4066Sahrens 1966ecc2d604Sbonwick /* 1967ecc2d604Sbonwick * Offline this device and reopen its top-level vdev. 1968e6ca193dSGeorge Wilson * If the top-level vdev is a log device then just offline 1969e6ca193dSGeorge Wilson * it. Otherwise, if this action results in the top-level 1970e6ca193dSGeorge Wilson * vdev becoming unusable, undo it and fail the request. 1971ecc2d604Sbonwick */ 1972ecc2d604Sbonwick vd->vdev_offline = B_TRUE; 1973e6ca193dSGeorge Wilson vdev_reopen(tvd); 1974e6ca193dSGeorge Wilson 1975e6ca193dSGeorge Wilson if (!tvd->vdev_islog && vd->vdev_aux == NULL && 1976e6ca193dSGeorge Wilson vdev_is_dead(tvd)) { 1977ecc2d604Sbonwick vd->vdev_offline = B_FALSE; 1978e6ca193dSGeorge Wilson vdev_reopen(tvd); 1979e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, EBUSY)); 1980ecc2d604Sbonwick } 1981fa9e4066Sahrens } 1982fa9e4066Sahrens 1983e14bb325SJeff Bonwick vd->vdev_tmpoffline = !!(flags & ZFS_OFFLINE_TEMPORARY); 1984ecc2d604Sbonwick 1985e6ca193dSGeorge Wilson if (!tvd->vdev_islog || !vdev_is_dead(tvd)) 1986e6ca193dSGeorge Wilson return (spa_vdev_state_exit(spa, vd, 0)); 1987e6ca193dSGeorge Wilson 1988e6ca193dSGeorge Wilson (void) spa_vdev_state_exit(spa, vd, 0); 1989e6ca193dSGeorge Wilson 1990e6ca193dSGeorge Wilson error = dmu_objset_find(spa_name(spa), zil_vdev_offline, 1991e6ca193dSGeorge Wilson NULL, DS_FIND_CHILDREN); 1992e6ca193dSGeorge Wilson if (error) { 1993e6ca193dSGeorge Wilson (void) vdev_online(spa, guid, 0, NULL); 1994e6ca193dSGeorge Wilson return (error); 1995e6ca193dSGeorge Wilson } 1996e6ca193dSGeorge Wilson /* 1997e6ca193dSGeorge Wilson * If we successfully offlined the log device then we need to 1998e6ca193dSGeorge Wilson * sync out the current txg so that the "stubby" block can be 1999e6ca193dSGeorge Wilson * removed by zil_sync(). 2000e6ca193dSGeorge Wilson */ 2001e6ca193dSGeorge Wilson txg_wait_synced(spa->spa_dsl_pool, 0); 2002e6ca193dSGeorge Wilson return (0); 2003fa9e4066Sahrens } 2004fa9e4066Sahrens 2005ea8dc4b6Seschrock /* 2006ea8dc4b6Seschrock * Clear the error counts associated with this vdev. Unlike vdev_online() and 2007ea8dc4b6Seschrock * vdev_offline(), we assume the spa config is locked. We also clear all 2008ea8dc4b6Seschrock * children. If 'vd' is NULL, then the user wants to clear all vdevs. 2009ea8dc4b6Seschrock */ 2010ea8dc4b6Seschrock void 2011e14bb325SJeff Bonwick vdev_clear(spa_t *spa, vdev_t *vd) 2012fa9e4066Sahrens { 2013e14bb325SJeff Bonwick vdev_t *rvd = spa->spa_root_vdev; 2014e14bb325SJeff Bonwick 2015e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 2016fa9e4066Sahrens 2017ea8dc4b6Seschrock if (vd == NULL) 2018e14bb325SJeff Bonwick vd = rvd; 2019fa9e4066Sahrens 2020ea8dc4b6Seschrock vd->vdev_stat.vs_read_errors = 0; 2021ea8dc4b6Seschrock vd->vdev_stat.vs_write_errors = 0; 2022ea8dc4b6Seschrock vd->vdev_stat.vs_checksum_errors = 0; 2023fa9e4066Sahrens 2024e14bb325SJeff Bonwick for (int c = 0; c < vd->vdev_children; c++) 2025e14bb325SJeff Bonwick vdev_clear(spa, vd->vdev_child[c]); 20263d7072f8Seschrock 20273d7072f8Seschrock /* 20288a79c1b5Sek * If we're in the FAULTED state or have experienced failed I/O, then 20298a79c1b5Sek * clear the persistent state and attempt to reopen the device. We 20308a79c1b5Sek * also mark the vdev config dirty, so that the new faulted state is 20318a79c1b5Sek * written out to disk. 20323d7072f8Seschrock */ 2033e14bb325SJeff Bonwick if (vd->vdev_faulted || vd->vdev_degraded || 2034e14bb325SJeff Bonwick !vdev_readable(vd) || !vdev_writeable(vd)) { 20358a79c1b5Sek 20363d7072f8Seschrock vd->vdev_faulted = vd->vdev_degraded = 0; 2037e14bb325SJeff Bonwick vd->vdev_cant_read = B_FALSE; 2038e14bb325SJeff Bonwick vd->vdev_cant_write = B_FALSE; 2039e14bb325SJeff Bonwick 20403d7072f8Seschrock vdev_reopen(vd); 20413d7072f8Seschrock 2042e14bb325SJeff Bonwick if (vd != rvd) 2043e14bb325SJeff Bonwick vdev_state_dirty(vd->vdev_top); 2044e14bb325SJeff Bonwick 2045e14bb325SJeff Bonwick if (vd->vdev_aux == NULL && !vdev_is_dead(vd)) 2046bb8b5132Sek spa_async_request(spa, SPA_ASYNC_RESILVER); 20473d7072f8Seschrock 20483d7072f8Seschrock spa_event_notify(spa, vd, ESC_ZFS_VDEV_CLEAR); 20493d7072f8Seschrock } 2050fa9e4066Sahrens } 2051fa9e4066Sahrens 2052e14bb325SJeff Bonwick boolean_t 2053e14bb325SJeff Bonwick vdev_is_dead(vdev_t *vd) 20540a4e9518Sgw { 2055e14bb325SJeff Bonwick return (vd->vdev_state < VDEV_STATE_DEGRADED); 20560a4e9518Sgw } 20570a4e9518Sgw 2058e14bb325SJeff Bonwick boolean_t 2059e14bb325SJeff Bonwick vdev_readable(vdev_t *vd) 20600a4e9518Sgw { 2061e14bb325SJeff Bonwick return (!vdev_is_dead(vd) && !vd->vdev_cant_read); 20620a4e9518Sgw } 20630a4e9518Sgw 2064e14bb325SJeff Bonwick boolean_t 2065e14bb325SJeff Bonwick vdev_writeable(vdev_t *vd) 2066fa9e4066Sahrens { 2067e14bb325SJeff Bonwick return (!vdev_is_dead(vd) && !vd->vdev_cant_write); 2068fa9e4066Sahrens } 2069fa9e4066Sahrens 2070a31e6787SGeorge Wilson boolean_t 2071a31e6787SGeorge Wilson vdev_allocatable(vdev_t *vd) 2072a31e6787SGeorge Wilson { 20738ad4d6ddSJeff Bonwick uint64_t state = vd->vdev_state; 20748ad4d6ddSJeff Bonwick 2075a31e6787SGeorge Wilson /* 20768ad4d6ddSJeff Bonwick * We currently allow allocations from vdevs which may be in the 2077a31e6787SGeorge Wilson * process of reopening (i.e. VDEV_STATE_CLOSED). If the device 2078a31e6787SGeorge Wilson * fails to reopen then we'll catch it later when we're holding 20798ad4d6ddSJeff Bonwick * the proper locks. Note that we have to get the vdev state 20808ad4d6ddSJeff Bonwick * in a local variable because although it changes atomically, 20818ad4d6ddSJeff Bonwick * we're asking two separate questions about it. 2082a31e6787SGeorge Wilson */ 20838ad4d6ddSJeff Bonwick return (!(state < VDEV_STATE_DEGRADED && state != VDEV_STATE_CLOSED) && 2084a31e6787SGeorge Wilson !vd->vdev_cant_write); 2085a31e6787SGeorge Wilson } 2086a31e6787SGeorge Wilson 2087e14bb325SJeff Bonwick boolean_t 2088e14bb325SJeff Bonwick vdev_accessible(vdev_t *vd, zio_t *zio) 2089fa9e4066Sahrens { 2090e14bb325SJeff Bonwick ASSERT(zio->io_vd == vd); 2091fa9e4066Sahrens 2092e14bb325SJeff Bonwick if (vdev_is_dead(vd) || vd->vdev_remove_wanted) 2093e14bb325SJeff Bonwick return (B_FALSE); 2094fa9e4066Sahrens 2095e14bb325SJeff Bonwick if (zio->io_type == ZIO_TYPE_READ) 2096e14bb325SJeff Bonwick return (!vd->vdev_cant_read); 2097fa9e4066Sahrens 2098e14bb325SJeff Bonwick if (zio->io_type == ZIO_TYPE_WRITE) 2099e14bb325SJeff Bonwick return (!vd->vdev_cant_write); 2100fa9e4066Sahrens 2101e14bb325SJeff Bonwick return (B_TRUE); 2102fa9e4066Sahrens } 2103fa9e4066Sahrens 2104fa9e4066Sahrens /* 2105fa9e4066Sahrens * Get statistics for the given vdev. 2106fa9e4066Sahrens */ 2107fa9e4066Sahrens void 2108fa9e4066Sahrens vdev_get_stats(vdev_t *vd, vdev_stat_t *vs) 2109fa9e4066Sahrens { 2110fa9e4066Sahrens vdev_t *rvd = vd->vdev_spa->spa_root_vdev; 2111fa9e4066Sahrens 2112fa9e4066Sahrens mutex_enter(&vd->vdev_stat_lock); 2113fa9e4066Sahrens bcopy(&vd->vdev_stat, vs, sizeof (*vs)); 2114088f3894Sahrens vs->vs_scrub_errors = vd->vdev_spa->spa_scrub_errors; 2115fa9e4066Sahrens vs->vs_timestamp = gethrtime() - vs->vs_timestamp; 2116fa9e4066Sahrens vs->vs_state = vd->vdev_state; 2117*573ca77eSGeorge Wilson vs->vs_rsize = vdev_get_min_asize(vd); 2118*573ca77eSGeorge Wilson if (vd->vdev_ops->vdev_op_leaf) 2119*573ca77eSGeorge Wilson vs->vs_rsize += VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE; 2120fa9e4066Sahrens mutex_exit(&vd->vdev_stat_lock); 2121fa9e4066Sahrens 2122fa9e4066Sahrens /* 2123fa9e4066Sahrens * If we're getting stats on the root vdev, aggregate the I/O counts 2124fa9e4066Sahrens * over all top-level vdevs (i.e. the direct children of the root). 2125fa9e4066Sahrens */ 2126fa9e4066Sahrens if (vd == rvd) { 2127e14bb325SJeff Bonwick for (int c = 0; c < rvd->vdev_children; c++) { 2128fa9e4066Sahrens vdev_t *cvd = rvd->vdev_child[c]; 2129fa9e4066Sahrens vdev_stat_t *cvs = &cvd->vdev_stat; 2130fa9e4066Sahrens 2131fa9e4066Sahrens mutex_enter(&vd->vdev_stat_lock); 2132e14bb325SJeff Bonwick for (int t = 0; t < ZIO_TYPES; t++) { 2133fa9e4066Sahrens vs->vs_ops[t] += cvs->vs_ops[t]; 2134fa9e4066Sahrens vs->vs_bytes[t] += cvs->vs_bytes[t]; 2135fa9e4066Sahrens } 2136fa9e4066Sahrens vs->vs_scrub_examined += cvs->vs_scrub_examined; 2137fa9e4066Sahrens mutex_exit(&vd->vdev_stat_lock); 2138fa9e4066Sahrens } 2139fa9e4066Sahrens } 2140fa9e4066Sahrens } 2141fa9e4066Sahrens 2142fa94a07fSbrendan void 2143fa94a07fSbrendan vdev_clear_stats(vdev_t *vd) 2144fa94a07fSbrendan { 2145fa94a07fSbrendan mutex_enter(&vd->vdev_stat_lock); 2146fa94a07fSbrendan vd->vdev_stat.vs_space = 0; 2147fa94a07fSbrendan vd->vdev_stat.vs_dspace = 0; 2148fa94a07fSbrendan vd->vdev_stat.vs_alloc = 0; 2149fa94a07fSbrendan mutex_exit(&vd->vdev_stat_lock); 2150fa94a07fSbrendan } 2151fa94a07fSbrendan 2152fa9e4066Sahrens void 2153e14bb325SJeff Bonwick vdev_stat_update(zio_t *zio, uint64_t psize) 2154fa9e4066Sahrens { 21558ad4d6ddSJeff Bonwick spa_t *spa = zio->io_spa; 21568ad4d6ddSJeff Bonwick vdev_t *rvd = spa->spa_root_vdev; 2157e14bb325SJeff Bonwick vdev_t *vd = zio->io_vd ? zio->io_vd : rvd; 2158fa9e4066Sahrens vdev_t *pvd; 2159fa9e4066Sahrens uint64_t txg = zio->io_txg; 2160fa9e4066Sahrens vdev_stat_t *vs = &vd->vdev_stat; 2161fa9e4066Sahrens zio_type_t type = zio->io_type; 2162fa9e4066Sahrens int flags = zio->io_flags; 2163fa9e4066Sahrens 2164e14bb325SJeff Bonwick /* 2165e14bb325SJeff Bonwick * If this i/o is a gang leader, it didn't do any actual work. 2166e14bb325SJeff Bonwick */ 2167e14bb325SJeff Bonwick if (zio->io_gang_tree) 2168e14bb325SJeff Bonwick return; 2169e14bb325SJeff Bonwick 2170fa9e4066Sahrens if (zio->io_error == 0) { 2171e14bb325SJeff Bonwick /* 2172e14bb325SJeff Bonwick * If this is a root i/o, don't count it -- we've already 2173e14bb325SJeff Bonwick * counted the top-level vdevs, and vdev_get_stats() will 2174e14bb325SJeff Bonwick * aggregate them when asked. This reduces contention on 2175e14bb325SJeff Bonwick * the root vdev_stat_lock and implicitly handles blocks 2176e14bb325SJeff Bonwick * that compress away to holes, for which there is no i/o. 2177e14bb325SJeff Bonwick * (Holes never create vdev children, so all the counters 2178e14bb325SJeff Bonwick * remain zero, which is what we want.) 2179e14bb325SJeff Bonwick * 2180e14bb325SJeff Bonwick * Note: this only applies to successful i/o (io_error == 0) 2181e14bb325SJeff Bonwick * because unlike i/o counts, errors are not additive. 2182e14bb325SJeff Bonwick * When reading a ditto block, for example, failure of 2183e14bb325SJeff Bonwick * one top-level vdev does not imply a root-level error. 2184e14bb325SJeff Bonwick */ 2185e14bb325SJeff Bonwick if (vd == rvd) 2186e14bb325SJeff Bonwick return; 2187e14bb325SJeff Bonwick 2188e14bb325SJeff Bonwick ASSERT(vd == zio->io_vd); 21898ad4d6ddSJeff Bonwick 21908ad4d6ddSJeff Bonwick if (flags & ZIO_FLAG_IO_BYPASS) 21918ad4d6ddSJeff Bonwick return; 21928ad4d6ddSJeff Bonwick 21938ad4d6ddSJeff Bonwick mutex_enter(&vd->vdev_stat_lock); 21948ad4d6ddSJeff Bonwick 2195e14bb325SJeff Bonwick if (flags & ZIO_FLAG_IO_REPAIR) { 2196d80c45e0Sbonwick if (flags & ZIO_FLAG_SCRUB_THREAD) 2197e14bb325SJeff Bonwick vs->vs_scrub_repaired += psize; 21988ad4d6ddSJeff Bonwick if (flags & ZIO_FLAG_SELF_HEAL) 2199e14bb325SJeff Bonwick vs->vs_self_healed += psize; 2200fa9e4066Sahrens } 22018ad4d6ddSJeff Bonwick 22028ad4d6ddSJeff Bonwick vs->vs_ops[type]++; 22038ad4d6ddSJeff Bonwick vs->vs_bytes[type] += psize; 22048ad4d6ddSJeff Bonwick 22058ad4d6ddSJeff Bonwick mutex_exit(&vd->vdev_stat_lock); 2206fa9e4066Sahrens return; 2207fa9e4066Sahrens } 2208fa9e4066Sahrens 2209fa9e4066Sahrens if (flags & ZIO_FLAG_SPECULATIVE) 2210fa9e4066Sahrens return; 2211fa9e4066Sahrens 22128956713aSEric Schrock /* 22138956713aSEric Schrock * If this is an I/O error that is going to be retried, then ignore the 22148956713aSEric Schrock * error. Otherwise, the user may interpret B_FAILFAST I/O errors as 22158956713aSEric Schrock * hard errors, when in reality they can happen for any number of 22168956713aSEric Schrock * innocuous reasons (bus resets, MPxIO link failure, etc). 22178956713aSEric Schrock */ 22188956713aSEric Schrock if (zio->io_error == EIO && 22198956713aSEric Schrock !(zio->io_flags & ZIO_FLAG_IO_RETRY)) 22208956713aSEric Schrock return; 22218956713aSEric Schrock 2222e14bb325SJeff Bonwick mutex_enter(&vd->vdev_stat_lock); 2223b47119fdSGeorge Wilson if (type == ZIO_TYPE_READ && !vdev_is_dead(vd)) { 2224e14bb325SJeff Bonwick if (zio->io_error == ECKSUM) 2225e14bb325SJeff Bonwick vs->vs_checksum_errors++; 2226e14bb325SJeff Bonwick else 2227e14bb325SJeff Bonwick vs->vs_read_errors++; 2228fa9e4066Sahrens } 2229b47119fdSGeorge Wilson if (type == ZIO_TYPE_WRITE && !vdev_is_dead(vd)) 2230e14bb325SJeff Bonwick vs->vs_write_errors++; 2231e14bb325SJeff Bonwick mutex_exit(&vd->vdev_stat_lock); 2232fa9e4066Sahrens 22338ad4d6ddSJeff Bonwick if (type == ZIO_TYPE_WRITE && txg != 0 && 22348ad4d6ddSJeff Bonwick (!(flags & ZIO_FLAG_IO_REPAIR) || 22358ad4d6ddSJeff Bonwick (flags & ZIO_FLAG_SCRUB_THREAD))) { 22368ad4d6ddSJeff Bonwick /* 22378ad4d6ddSJeff Bonwick * This is either a normal write (not a repair), or it's a 22388ad4d6ddSJeff Bonwick * repair induced by the scrub thread. In the normal case, 22398ad4d6ddSJeff Bonwick * we commit the DTL change in the same txg as the block 22408ad4d6ddSJeff Bonwick * was born. In the scrub-induced repair case, we know that 22418ad4d6ddSJeff Bonwick * scrubs run in first-pass syncing context, so we commit 22428ad4d6ddSJeff Bonwick * the DTL change in spa->spa_syncing_txg. 22438ad4d6ddSJeff Bonwick * 22448ad4d6ddSJeff Bonwick * We currently do not make DTL entries for failed spontaneous 22458ad4d6ddSJeff Bonwick * self-healing writes triggered by normal (non-scrubbing) 22468ad4d6ddSJeff Bonwick * reads, because we have no transactional context in which to 22478ad4d6ddSJeff Bonwick * do so -- and it's not clear that it'd be desirable anyway. 22488ad4d6ddSJeff Bonwick */ 22498ad4d6ddSJeff Bonwick if (vd->vdev_ops->vdev_op_leaf) { 22508ad4d6ddSJeff Bonwick uint64_t commit_txg = txg; 22518ad4d6ddSJeff Bonwick if (flags & ZIO_FLAG_SCRUB_THREAD) { 22528ad4d6ddSJeff Bonwick ASSERT(flags & ZIO_FLAG_IO_REPAIR); 22538ad4d6ddSJeff Bonwick ASSERT(spa_sync_pass(spa) == 1); 22548ad4d6ddSJeff Bonwick vdev_dtl_dirty(vd, DTL_SCRUB, txg, 1); 22558ad4d6ddSJeff Bonwick commit_txg = spa->spa_syncing_txg; 22568ad4d6ddSJeff Bonwick } 22578ad4d6ddSJeff Bonwick ASSERT(commit_txg >= spa->spa_syncing_txg); 22588ad4d6ddSJeff Bonwick if (vdev_dtl_contains(vd, DTL_MISSING, txg, 1)) 2259fa9e4066Sahrens return; 22608ad4d6ddSJeff Bonwick for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) 22618ad4d6ddSJeff Bonwick vdev_dtl_dirty(pvd, DTL_PARTIAL, txg, 1); 22628ad4d6ddSJeff Bonwick vdev_dirty(vd->vdev_top, VDD_DTL, vd, commit_txg); 2263fa9e4066Sahrens } 22648ad4d6ddSJeff Bonwick if (vd != rvd) 22658ad4d6ddSJeff Bonwick vdev_dtl_dirty(vd, DTL_MISSING, txg, 1); 2266fa9e4066Sahrens } 2267fa9e4066Sahrens } 2268fa9e4066Sahrens 2269fa9e4066Sahrens void 2270fa9e4066Sahrens vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, boolean_t complete) 2271fa9e4066Sahrens { 2272fa9e4066Sahrens vdev_stat_t *vs = &vd->vdev_stat; 2273fa9e4066Sahrens 2274*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 2275fa9e4066Sahrens vdev_scrub_stat_update(vd->vdev_child[c], type, complete); 2276fa9e4066Sahrens 2277fa9e4066Sahrens mutex_enter(&vd->vdev_stat_lock); 2278fa9e4066Sahrens 2279fa9e4066Sahrens if (type == POOL_SCRUB_NONE) { 2280fa9e4066Sahrens /* 2281fa9e4066Sahrens * Update completion and end time. Leave everything else alone 2282fa9e4066Sahrens * so we can report what happened during the previous scrub. 2283fa9e4066Sahrens */ 2284fa9e4066Sahrens vs->vs_scrub_complete = complete; 2285fa9e4066Sahrens vs->vs_scrub_end = gethrestime_sec(); 2286fa9e4066Sahrens } else { 2287fa9e4066Sahrens vs->vs_scrub_type = type; 2288fa9e4066Sahrens vs->vs_scrub_complete = 0; 2289fa9e4066Sahrens vs->vs_scrub_examined = 0; 2290fa9e4066Sahrens vs->vs_scrub_repaired = 0; 2291fa9e4066Sahrens vs->vs_scrub_start = gethrestime_sec(); 2292fa9e4066Sahrens vs->vs_scrub_end = 0; 2293fa9e4066Sahrens } 2294fa9e4066Sahrens 2295fa9e4066Sahrens mutex_exit(&vd->vdev_stat_lock); 2296fa9e4066Sahrens } 2297fa9e4066Sahrens 2298fa9e4066Sahrens /* 2299fa9e4066Sahrens * Update the in-core space usage stats for this vdev and the root vdev. 2300fa9e4066Sahrens */ 2301fa9e4066Sahrens void 2302fa94a07fSbrendan vdev_space_update(vdev_t *vd, int64_t space_delta, int64_t alloc_delta, 2303fa94a07fSbrendan boolean_t update_root) 2304fa9e4066Sahrens { 230599653d4eSeschrock int64_t dspace_delta = space_delta; 23068654d025Sperrin spa_t *spa = vd->vdev_spa; 23078654d025Sperrin vdev_t *rvd = spa->spa_root_vdev; 2308fa9e4066Sahrens 23098654d025Sperrin ASSERT(vd == vd->vdev_top); 231099653d4eSeschrock 23118654d025Sperrin /* 23128654d025Sperrin * Apply the inverse of the psize-to-asize (ie. RAID-Z) space-expansion 23138654d025Sperrin * factor. We must calculate this here and not at the root vdev 23148654d025Sperrin * because the root vdev's psize-to-asize is simply the max of its 23158654d025Sperrin * childrens', thus not accurate enough for us. 23168654d025Sperrin */ 23178654d025Sperrin ASSERT((dspace_delta & (SPA_MINBLOCKSIZE-1)) == 0); 2318e6ca193dSGeorge Wilson ASSERT(vd->vdev_deflate_ratio != 0 || vd->vdev_isl2cache); 23198654d025Sperrin dspace_delta = (dspace_delta >> SPA_MINBLOCKSHIFT) * 23208654d025Sperrin vd->vdev_deflate_ratio; 23218654d025Sperrin 23228654d025Sperrin mutex_enter(&vd->vdev_stat_lock); 23238654d025Sperrin vd->vdev_stat.vs_space += space_delta; 23248654d025Sperrin vd->vdev_stat.vs_alloc += alloc_delta; 23258654d025Sperrin vd->vdev_stat.vs_dspace += dspace_delta; 23268654d025Sperrin mutex_exit(&vd->vdev_stat_lock); 23278654d025Sperrin 2328fa94a07fSbrendan if (update_root) { 2329fa94a07fSbrendan ASSERT(rvd == vd->vdev_parent); 2330fa94a07fSbrendan ASSERT(vd->vdev_ms_count != 0); 2331fa94a07fSbrendan 2332fa94a07fSbrendan /* 2333fa94a07fSbrendan * Don't count non-normal (e.g. intent log) space as part of 2334fa94a07fSbrendan * the pool's capacity. 2335fa94a07fSbrendan */ 2336fa94a07fSbrendan if (vd->vdev_mg->mg_class != spa->spa_normal_class) 2337fa94a07fSbrendan return; 23388654d025Sperrin 2339fa94a07fSbrendan mutex_enter(&rvd->vdev_stat_lock); 2340fa94a07fSbrendan rvd->vdev_stat.vs_space += space_delta; 2341fa94a07fSbrendan rvd->vdev_stat.vs_alloc += alloc_delta; 2342fa94a07fSbrendan rvd->vdev_stat.vs_dspace += dspace_delta; 2343fa94a07fSbrendan mutex_exit(&rvd->vdev_stat_lock); 2344fa94a07fSbrendan } 2345fa9e4066Sahrens } 2346fa9e4066Sahrens 2347fa9e4066Sahrens /* 2348fa9e4066Sahrens * Mark a top-level vdev's config as dirty, placing it on the dirty list 2349fa9e4066Sahrens * so that it will be written out next time the vdev configuration is synced. 2350fa9e4066Sahrens * If the root vdev is specified (vdev_top == NULL), dirty all top-level vdevs. 2351fa9e4066Sahrens */ 2352fa9e4066Sahrens void 2353fa9e4066Sahrens vdev_config_dirty(vdev_t *vd) 2354fa9e4066Sahrens { 2355fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 2356fa9e4066Sahrens vdev_t *rvd = spa->spa_root_vdev; 2357fa9e4066Sahrens int c; 2358fa9e4066Sahrens 2359c5904d13Seschrock /* 23606809eb4eSEric Schrock * If this is an aux vdev (as with l2cache and spare devices), then we 23616809eb4eSEric Schrock * update the vdev config manually and set the sync flag. 2362c5904d13Seschrock */ 2363c5904d13Seschrock if (vd->vdev_aux != NULL) { 2364c5904d13Seschrock spa_aux_vdev_t *sav = vd->vdev_aux; 2365c5904d13Seschrock nvlist_t **aux; 2366c5904d13Seschrock uint_t naux; 2367c5904d13Seschrock 2368c5904d13Seschrock for (c = 0; c < sav->sav_count; c++) { 2369c5904d13Seschrock if (sav->sav_vdevs[c] == vd) 2370c5904d13Seschrock break; 2371c5904d13Seschrock } 2372c5904d13Seschrock 2373e14bb325SJeff Bonwick if (c == sav->sav_count) { 2374e14bb325SJeff Bonwick /* 2375e14bb325SJeff Bonwick * We're being removed. There's nothing more to do. 2376e14bb325SJeff Bonwick */ 2377e14bb325SJeff Bonwick ASSERT(sav->sav_sync == B_TRUE); 2378e14bb325SJeff Bonwick return; 2379e14bb325SJeff Bonwick } 2380e14bb325SJeff Bonwick 2381c5904d13Seschrock sav->sav_sync = B_TRUE; 2382c5904d13Seschrock 23836809eb4eSEric Schrock if (nvlist_lookup_nvlist_array(sav->sav_config, 23846809eb4eSEric Schrock ZPOOL_CONFIG_L2CACHE, &aux, &naux) != 0) { 23856809eb4eSEric Schrock VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, 23866809eb4eSEric Schrock ZPOOL_CONFIG_SPARES, &aux, &naux) == 0); 23876809eb4eSEric Schrock } 2388c5904d13Seschrock 2389c5904d13Seschrock ASSERT(c < naux); 2390c5904d13Seschrock 2391c5904d13Seschrock /* 2392c5904d13Seschrock * Setting the nvlist in the middle if the array is a little 2393c5904d13Seschrock * sketchy, but it will work. 2394c5904d13Seschrock */ 2395c5904d13Seschrock nvlist_free(aux[c]); 2396c5904d13Seschrock aux[c] = vdev_config_generate(spa, vd, B_TRUE, B_FALSE, B_TRUE); 2397c5904d13Seschrock 2398c5904d13Seschrock return; 2399c5904d13Seschrock } 2400c5904d13Seschrock 24015dabedeeSbonwick /* 2402e14bb325SJeff Bonwick * The dirty list is protected by the SCL_CONFIG lock. The caller 2403e14bb325SJeff Bonwick * must either hold SCL_CONFIG as writer, or must be the sync thread 2404e14bb325SJeff Bonwick * (which holds SCL_CONFIG as reader). There's only one sync thread, 24055dabedeeSbonwick * so this is sufficient to ensure mutual exclusion. 24065dabedeeSbonwick */ 2407e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || 2408e14bb325SJeff Bonwick (dsl_pool_sync_context(spa_get_dsl(spa)) && 2409e14bb325SJeff Bonwick spa_config_held(spa, SCL_CONFIG, RW_READER))); 24105dabedeeSbonwick 2411fa9e4066Sahrens if (vd == rvd) { 2412fa9e4066Sahrens for (c = 0; c < rvd->vdev_children; c++) 2413fa9e4066Sahrens vdev_config_dirty(rvd->vdev_child[c]); 2414fa9e4066Sahrens } else { 2415fa9e4066Sahrens ASSERT(vd == vd->vdev_top); 2416fa9e4066Sahrens 2417e14bb325SJeff Bonwick if (!list_link_active(&vd->vdev_config_dirty_node)) 2418e14bb325SJeff Bonwick list_insert_head(&spa->spa_config_dirty_list, vd); 2419fa9e4066Sahrens } 2420fa9e4066Sahrens } 2421fa9e4066Sahrens 2422fa9e4066Sahrens void 2423fa9e4066Sahrens vdev_config_clean(vdev_t *vd) 2424fa9e4066Sahrens { 24255dabedeeSbonwick spa_t *spa = vd->vdev_spa; 24265dabedeeSbonwick 2427e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || 2428e14bb325SJeff Bonwick (dsl_pool_sync_context(spa_get_dsl(spa)) && 2429e14bb325SJeff Bonwick spa_config_held(spa, SCL_CONFIG, RW_READER))); 24305dabedeeSbonwick 2431e14bb325SJeff Bonwick ASSERT(list_link_active(&vd->vdev_config_dirty_node)); 2432e14bb325SJeff Bonwick list_remove(&spa->spa_config_dirty_list, vd); 2433e14bb325SJeff Bonwick } 2434e14bb325SJeff Bonwick 2435e14bb325SJeff Bonwick /* 2436e14bb325SJeff Bonwick * Mark a top-level vdev's state as dirty, so that the next pass of 2437e14bb325SJeff Bonwick * spa_sync() can convert this into vdev_config_dirty(). We distinguish 2438e14bb325SJeff Bonwick * the state changes from larger config changes because they require 2439e14bb325SJeff Bonwick * much less locking, and are often needed for administrative actions. 2440e14bb325SJeff Bonwick */ 2441e14bb325SJeff Bonwick void 2442e14bb325SJeff Bonwick vdev_state_dirty(vdev_t *vd) 2443e14bb325SJeff Bonwick { 2444e14bb325SJeff Bonwick spa_t *spa = vd->vdev_spa; 2445e14bb325SJeff Bonwick 2446e14bb325SJeff Bonwick ASSERT(vd == vd->vdev_top); 2447e14bb325SJeff Bonwick 2448e14bb325SJeff Bonwick /* 2449e14bb325SJeff Bonwick * The state list is protected by the SCL_STATE lock. The caller 2450e14bb325SJeff Bonwick * must either hold SCL_STATE as writer, or must be the sync thread 2451e14bb325SJeff Bonwick * (which holds SCL_STATE as reader). There's only one sync thread, 2452e14bb325SJeff Bonwick * so this is sufficient to ensure mutual exclusion. 2453e14bb325SJeff Bonwick */ 2454e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || 2455e14bb325SJeff Bonwick (dsl_pool_sync_context(spa_get_dsl(spa)) && 2456e14bb325SJeff Bonwick spa_config_held(spa, SCL_STATE, RW_READER))); 2457e14bb325SJeff Bonwick 2458e14bb325SJeff Bonwick if (!list_link_active(&vd->vdev_state_dirty_node)) 2459e14bb325SJeff Bonwick list_insert_head(&spa->spa_state_dirty_list, vd); 2460e14bb325SJeff Bonwick } 2461e14bb325SJeff Bonwick 2462e14bb325SJeff Bonwick void 2463e14bb325SJeff Bonwick vdev_state_clean(vdev_t *vd) 2464e14bb325SJeff Bonwick { 2465e14bb325SJeff Bonwick spa_t *spa = vd->vdev_spa; 2466e14bb325SJeff Bonwick 2467e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || 2468e14bb325SJeff Bonwick (dsl_pool_sync_context(spa_get_dsl(spa)) && 2469e14bb325SJeff Bonwick spa_config_held(spa, SCL_STATE, RW_READER))); 2470e14bb325SJeff Bonwick 2471e14bb325SJeff Bonwick ASSERT(list_link_active(&vd->vdev_state_dirty_node)); 2472e14bb325SJeff Bonwick list_remove(&spa->spa_state_dirty_list, vd); 2473fa9e4066Sahrens } 2474fa9e4066Sahrens 247532b87932Sek /* 247632b87932Sek * Propagate vdev state up from children to parent. 247732b87932Sek */ 247844cd46caSbillm void 247944cd46caSbillm vdev_propagate_state(vdev_t *vd) 248044cd46caSbillm { 24818ad4d6ddSJeff Bonwick spa_t *spa = vd->vdev_spa; 24828ad4d6ddSJeff Bonwick vdev_t *rvd = spa->spa_root_vdev; 248344cd46caSbillm int degraded = 0, faulted = 0; 248444cd46caSbillm int corrupted = 0; 248544cd46caSbillm vdev_t *child; 248644cd46caSbillm 24873d7072f8Seschrock if (vd->vdev_children > 0) { 2488*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) { 24893d7072f8Seschrock child = vd->vdev_child[c]; 249051ece835Seschrock 2491e14bb325SJeff Bonwick if (!vdev_readable(child) || 24928ad4d6ddSJeff Bonwick (!vdev_writeable(child) && spa_writeable(spa))) { 249351ece835Seschrock /* 249451ece835Seschrock * Root special: if there is a top-level log 249551ece835Seschrock * device, treat the root vdev as if it were 249651ece835Seschrock * degraded. 249751ece835Seschrock */ 249851ece835Seschrock if (child->vdev_islog && vd == rvd) 249951ece835Seschrock degraded++; 250051ece835Seschrock else 250151ece835Seschrock faulted++; 250251ece835Seschrock } else if (child->vdev_state <= VDEV_STATE_DEGRADED) { 25033d7072f8Seschrock degraded++; 250451ece835Seschrock } 250544cd46caSbillm 25063d7072f8Seschrock if (child->vdev_stat.vs_aux == VDEV_AUX_CORRUPT_DATA) 25073d7072f8Seschrock corrupted++; 25083d7072f8Seschrock } 250944cd46caSbillm 25103d7072f8Seschrock vd->vdev_ops->vdev_op_state_change(vd, faulted, degraded); 25113d7072f8Seschrock 25123d7072f8Seschrock /* 2513e14bb325SJeff Bonwick * Root special: if there is a top-level vdev that cannot be 25143d7072f8Seschrock * opened due to corrupted metadata, then propagate the root 25153d7072f8Seschrock * vdev's aux state as 'corrupt' rather than 'insufficient 25163d7072f8Seschrock * replicas'. 25173d7072f8Seschrock */ 25183d7072f8Seschrock if (corrupted && vd == rvd && 25193d7072f8Seschrock rvd->vdev_state == VDEV_STATE_CANT_OPEN) 25203d7072f8Seschrock vdev_set_state(rvd, B_FALSE, VDEV_STATE_CANT_OPEN, 25213d7072f8Seschrock VDEV_AUX_CORRUPT_DATA); 25223d7072f8Seschrock } 25233d7072f8Seschrock 252451ece835Seschrock if (vd->vdev_parent) 25253d7072f8Seschrock vdev_propagate_state(vd->vdev_parent); 252644cd46caSbillm } 252744cd46caSbillm 2528fa9e4066Sahrens /* 2529ea8dc4b6Seschrock * Set a vdev's state. If this is during an open, we don't update the parent 2530ea8dc4b6Seschrock * state, because we're in the process of opening children depth-first. 2531ea8dc4b6Seschrock * Otherwise, we propagate the change to the parent. 2532ea8dc4b6Seschrock * 2533ea8dc4b6Seschrock * If this routine places a device in a faulted state, an appropriate ereport is 2534ea8dc4b6Seschrock * generated. 2535fa9e4066Sahrens */ 2536fa9e4066Sahrens void 2537ea8dc4b6Seschrock vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, vdev_aux_t aux) 2538fa9e4066Sahrens { 2539560e6e96Seschrock uint64_t save_state; 2540c5904d13Seschrock spa_t *spa = vd->vdev_spa; 2541ea8dc4b6Seschrock 2542ea8dc4b6Seschrock if (state == vd->vdev_state) { 2543ea8dc4b6Seschrock vd->vdev_stat.vs_aux = aux; 2544fa9e4066Sahrens return; 2545ea8dc4b6Seschrock } 2546ea8dc4b6Seschrock 2547560e6e96Seschrock save_state = vd->vdev_state; 2548fa9e4066Sahrens 2549fa9e4066Sahrens vd->vdev_state = state; 2550fa9e4066Sahrens vd->vdev_stat.vs_aux = aux; 2551fa9e4066Sahrens 25523d7072f8Seschrock /* 25533d7072f8Seschrock * If we are setting the vdev state to anything but an open state, then 25543d7072f8Seschrock * always close the underlying device. Otherwise, we keep accessible 25553d7072f8Seschrock * but invalid devices open forever. We don't call vdev_close() itself, 25563d7072f8Seschrock * because that implies some extra checks (offline, etc) that we don't 25573d7072f8Seschrock * want here. This is limited to leaf devices, because otherwise 25583d7072f8Seschrock * closing the device will affect other children. 25593d7072f8Seschrock */ 2560cbd2b15eSJeff Bonwick if (vdev_is_dead(vd) && vd->vdev_ops->vdev_op_leaf) 25613d7072f8Seschrock vd->vdev_ops->vdev_op_close(vd); 25623d7072f8Seschrock 25633d7072f8Seschrock if (vd->vdev_removed && 25643d7072f8Seschrock state == VDEV_STATE_CANT_OPEN && 25653d7072f8Seschrock (aux == VDEV_AUX_OPEN_FAILED || vd->vdev_checkremove)) { 25663d7072f8Seschrock /* 25673d7072f8Seschrock * If the previous state is set to VDEV_STATE_REMOVED, then this 25683d7072f8Seschrock * device was previously marked removed and someone attempted to 25693d7072f8Seschrock * reopen it. If this failed due to a nonexistent device, then 25703d7072f8Seschrock * keep the device in the REMOVED state. We also let this be if 25713d7072f8Seschrock * it is one of our special test online cases, which is only 25723d7072f8Seschrock * attempting to online the device and shouldn't generate an FMA 25733d7072f8Seschrock * fault. 25743d7072f8Seschrock */ 25753d7072f8Seschrock vd->vdev_state = VDEV_STATE_REMOVED; 25763d7072f8Seschrock vd->vdev_stat.vs_aux = VDEV_AUX_NONE; 25773d7072f8Seschrock } else if (state == VDEV_STATE_REMOVED) { 25783d7072f8Seschrock /* 25793d7072f8Seschrock * Indicate to the ZFS DE that this device has been removed, and 25803d7072f8Seschrock * any recent errors should be ignored. 25813d7072f8Seschrock */ 2582c5904d13Seschrock zfs_post_remove(spa, vd); 25833d7072f8Seschrock vd->vdev_removed = B_TRUE; 25843d7072f8Seschrock } else if (state == VDEV_STATE_CANT_OPEN) { 2585ea8dc4b6Seschrock /* 2586ea8dc4b6Seschrock * If we fail to open a vdev during an import, we mark it as 2587ea8dc4b6Seschrock * "not available", which signifies that it was never there to 2588ea8dc4b6Seschrock * begin with. Failure to open such a device is not considered 2589ea8dc4b6Seschrock * an error. 2590ea8dc4b6Seschrock */ 2591c5904d13Seschrock if (spa->spa_load_state == SPA_LOAD_IMPORT && 2592560e6e96Seschrock vd->vdev_ops->vdev_op_leaf) 2593560e6e96Seschrock vd->vdev_not_present = 1; 2594560e6e96Seschrock 2595560e6e96Seschrock /* 2596560e6e96Seschrock * Post the appropriate ereport. If the 'prevstate' field is 2597560e6e96Seschrock * set to something other than VDEV_STATE_UNKNOWN, it indicates 2598560e6e96Seschrock * that this is part of a vdev_reopen(). In this case, we don't 2599560e6e96Seschrock * want to post the ereport if the device was already in the 2600560e6e96Seschrock * CANT_OPEN state beforehand. 26013d7072f8Seschrock * 26023d7072f8Seschrock * If the 'checkremove' flag is set, then this is an attempt to 26033d7072f8Seschrock * online the device in response to an insertion event. If we 26043d7072f8Seschrock * hit this case, then we have detected an insertion event for a 26053d7072f8Seschrock * faulted or offline device that wasn't in the removed state. 26063d7072f8Seschrock * In this scenario, we don't post an ereport because we are 26073d7072f8Seschrock * about to replace the device, or attempt an online with 26083d7072f8Seschrock * vdev_forcefault, which will generate the fault for us. 2609560e6e96Seschrock */ 26103d7072f8Seschrock if ((vd->vdev_prevstate != state || vd->vdev_forcefault) && 26113d7072f8Seschrock !vd->vdev_not_present && !vd->vdev_checkremove && 2612c5904d13Seschrock vd != spa->spa_root_vdev) { 2613ea8dc4b6Seschrock const char *class; 2614ea8dc4b6Seschrock 2615ea8dc4b6Seschrock switch (aux) { 2616ea8dc4b6Seschrock case VDEV_AUX_OPEN_FAILED: 2617ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_OPEN_FAILED; 2618ea8dc4b6Seschrock break; 2619ea8dc4b6Seschrock case VDEV_AUX_CORRUPT_DATA: 2620ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_CORRUPT_DATA; 2621ea8dc4b6Seschrock break; 2622ea8dc4b6Seschrock case VDEV_AUX_NO_REPLICAS: 2623ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_NO_REPLICAS; 2624ea8dc4b6Seschrock break; 2625ea8dc4b6Seschrock case VDEV_AUX_BAD_GUID_SUM: 2626ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_BAD_GUID_SUM; 2627ea8dc4b6Seschrock break; 2628ea8dc4b6Seschrock case VDEV_AUX_TOO_SMALL: 2629ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_TOO_SMALL; 2630ea8dc4b6Seschrock break; 2631ea8dc4b6Seschrock case VDEV_AUX_BAD_LABEL: 2632ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_BAD_LABEL; 2633ea8dc4b6Seschrock break; 2634e14bb325SJeff Bonwick case VDEV_AUX_IO_FAILURE: 2635e14bb325SJeff Bonwick class = FM_EREPORT_ZFS_IO_FAILURE; 2636e14bb325SJeff Bonwick break; 2637ea8dc4b6Seschrock default: 2638ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_UNKNOWN; 2639ea8dc4b6Seschrock } 2640ea8dc4b6Seschrock 2641c5904d13Seschrock zfs_ereport_post(class, spa, vd, NULL, save_state, 0); 2642ea8dc4b6Seschrock } 2643ea8dc4b6Seschrock 26443d7072f8Seschrock /* Erase any notion of persistent removed state */ 26453d7072f8Seschrock vd->vdev_removed = B_FALSE; 26463d7072f8Seschrock } else { 26473d7072f8Seschrock vd->vdev_removed = B_FALSE; 26483d7072f8Seschrock } 2649ea8dc4b6Seschrock 26508b33d774STim Haley if (!isopen && vd->vdev_parent) 26518b33d774STim Haley vdev_propagate_state(vd->vdev_parent); 2652fa9e4066Sahrens } 265315e6edf1Sgw 265415e6edf1Sgw /* 265515e6edf1Sgw * Check the vdev configuration to ensure that it's capable of supporting 265615e6edf1Sgw * a root pool. Currently, we do not support RAID-Z or partial configuration. 265715e6edf1Sgw * In addition, only a single top-level vdev is allowed and none of the leaves 265815e6edf1Sgw * can be wholedisks. 265915e6edf1Sgw */ 266015e6edf1Sgw boolean_t 266115e6edf1Sgw vdev_is_bootable(vdev_t *vd) 266215e6edf1Sgw { 266315e6edf1Sgw if (!vd->vdev_ops->vdev_op_leaf) { 266415e6edf1Sgw char *vdev_type = vd->vdev_ops->vdev_op_type; 266515e6edf1Sgw 266615e6edf1Sgw if (strcmp(vdev_type, VDEV_TYPE_ROOT) == 0 && 266715e6edf1Sgw vd->vdev_children > 1) { 266815e6edf1Sgw return (B_FALSE); 266915e6edf1Sgw } else if (strcmp(vdev_type, VDEV_TYPE_RAIDZ) == 0 || 267015e6edf1Sgw strcmp(vdev_type, VDEV_TYPE_MISSING) == 0) { 267115e6edf1Sgw return (B_FALSE); 267215e6edf1Sgw } 267315e6edf1Sgw } else if (vd->vdev_wholedisk == 1) { 267415e6edf1Sgw return (B_FALSE); 267515e6edf1Sgw } 267615e6edf1Sgw 2677*573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) { 267815e6edf1Sgw if (!vdev_is_bootable(vd->vdev_child[c])) 267915e6edf1Sgw return (B_FALSE); 268015e6edf1Sgw } 268115e6edf1Sgw return (B_TRUE); 268215e6edf1Sgw } 2683e6ca193dSGeorge Wilson 2684e6ca193dSGeorge Wilson void 2685e6ca193dSGeorge Wilson vdev_load_log_state(vdev_t *vd, nvlist_t *nv) 2686e6ca193dSGeorge Wilson { 2687*573ca77eSGeorge Wilson uint_t children; 2688e6ca193dSGeorge Wilson nvlist_t **child; 2689e6ca193dSGeorge Wilson uint64_t val; 2690e6ca193dSGeorge Wilson spa_t *spa = vd->vdev_spa; 2691e6ca193dSGeorge Wilson 2692e6ca193dSGeorge Wilson if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 2693e6ca193dSGeorge Wilson &child, &children) == 0) { 2694*573ca77eSGeorge Wilson for (int c = 0; c < children; c++) 2695e6ca193dSGeorge Wilson vdev_load_log_state(vd->vdev_child[c], child[c]); 2696e6ca193dSGeorge Wilson } 2697e6ca193dSGeorge Wilson 2698e6ca193dSGeorge Wilson if (vd->vdev_ops->vdev_op_leaf && nvlist_lookup_uint64(nv, 2699e6ca193dSGeorge Wilson ZPOOL_CONFIG_OFFLINE, &val) == 0 && val) { 2700e6ca193dSGeorge Wilson 2701e6ca193dSGeorge Wilson /* 2702e6ca193dSGeorge Wilson * It would be nice to call vdev_offline() 2703e6ca193dSGeorge Wilson * directly but the pool isn't fully loaded and 2704e6ca193dSGeorge Wilson * the txg threads have not been started yet. 2705e6ca193dSGeorge Wilson */ 2706e6ca193dSGeorge Wilson spa_config_enter(spa, SCL_STATE_ALL, FTAG, RW_WRITER); 2707e6ca193dSGeorge Wilson vd->vdev_offline = val; 2708e6ca193dSGeorge Wilson vdev_reopen(vd->vdev_top); 2709e6ca193dSGeorge Wilson spa_config_exit(spa, SCL_STATE_ALL, FTAG); 2710e6ca193dSGeorge Wilson } 2711e6ca193dSGeorge Wilson } 2712*573ca77eSGeorge Wilson 2713*573ca77eSGeorge Wilson /* 2714*573ca77eSGeorge Wilson * Expand a vdev if possible. 2715*573ca77eSGeorge Wilson */ 2716*573ca77eSGeorge Wilson void 2717*573ca77eSGeorge Wilson vdev_expand(vdev_t *vd, uint64_t txg) 2718*573ca77eSGeorge Wilson { 2719*573ca77eSGeorge Wilson ASSERT(vd->vdev_top == vd); 2720*573ca77eSGeorge Wilson ASSERT(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); 2721*573ca77eSGeorge Wilson 2722*573ca77eSGeorge Wilson if ((vd->vdev_asize >> vd->vdev_ms_shift) > vd->vdev_ms_count) { 2723*573ca77eSGeorge Wilson VERIFY(vdev_metaslab_init(vd, txg) == 0); 2724*573ca77eSGeorge Wilson vdev_config_dirty(vd); 2725*573ca77eSGeorge Wilson } 2726*573ca77eSGeorge Wilson } 2727