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 /* 2398d1cbfeSGeorge Wilson * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 245cabbc6bSPrashanth Sreenivasa * Copyright (c) 2011, 2018 by Delphix. All rights reserved. 255f368aefSYuri Pankov * Copyright 2017 Nexenta Systems, Inc. 26c3d26abcSMatthew Ahrens * Copyright (c) 2014 Integros [integros.com] 27c8811bd3SToomas Soome * Copyright 2016 Toomas Soome <tsoome@me.com> 28c1064fd7SJerry Jelinek * Copyright 2019 Joyent, Inc. 29663207adSDon Brady * Copyright (c) 2017, Intel Corporation. 300c06d385Sjwpoduska * Copyright (c) 2019, Datto Inc. All rights reserved. 31fa9e4066Sahrens */ 32fa9e4066Sahrens 33fa9e4066Sahrens #include <sys/zfs_context.h> 34ea8dc4b6Seschrock #include <sys/fm/fs/zfs.h> 35fa9e4066Sahrens #include <sys/spa.h> 36fa9e4066Sahrens #include <sys/spa_impl.h> 375cabbc6bSPrashanth Sreenivasa #include <sys/bpobj.h> 38fa9e4066Sahrens #include <sys/dmu.h> 39fa9e4066Sahrens #include <sys/dmu_tx.h> 405cabbc6bSPrashanth Sreenivasa #include <sys/dsl_dir.h> 41fa9e4066Sahrens #include <sys/vdev_impl.h> 42fa9e4066Sahrens #include <sys/uberblock_impl.h> 43fa9e4066Sahrens #include <sys/metaslab.h> 44fa9e4066Sahrens #include <sys/metaslab_impl.h> 45fa9e4066Sahrens #include <sys/space_map.h> 460713e232SGeorge Wilson #include <sys/space_reftree.h> 47fa9e4066Sahrens #include <sys/zio.h> 48fa9e4066Sahrens #include <sys/zap.h> 49fa9e4066Sahrens #include <sys/fs/zfs.h> 50c5904d13Seschrock #include <sys/arc.h> 51e6ca193dSGeorge Wilson #include <sys/zil.h> 523f9d6ad7SLin Ling #include <sys/dsl_scan.h> 53770499e1SDan Kimmel #include <sys/abd.h> 54094e47e9SGeorge Wilson #include <sys/vdev_initialize.h> 55084fd14fSBrian Behlendorf #include <sys/vdev_trim.h> 56fa9e4066Sahrens 57fa9e4066Sahrens /* 58fa9e4066Sahrens * Virtual device management. 59fa9e4066Sahrens */ 60fa9e4066Sahrens 61fa9e4066Sahrens static vdev_ops_t *vdev_ops_table[] = { 62fa9e4066Sahrens &vdev_root_ops, 63fa9e4066Sahrens &vdev_raidz_ops, 64fa9e4066Sahrens &vdev_mirror_ops, 65fa9e4066Sahrens &vdev_replacing_ops, 6699653d4eSeschrock &vdev_spare_ops, 67fa9e4066Sahrens &vdev_disk_ops, 68fa9e4066Sahrens &vdev_file_ops, 69fa9e4066Sahrens &vdev_missing_ops, 7088ecc943SGeorge Wilson &vdev_hole_ops, 715cabbc6bSPrashanth Sreenivasa &vdev_indirect_ops, 72fa9e4066Sahrens NULL 73fa9e4066Sahrens }; 74fa9e4066Sahrens 75088f3894Sahrens /* maximum scrub/resilver I/O queue per leaf vdev */ 76088f3894Sahrens int zfs_scrub_limit = 10; 7705b2b3b8Smishra 78a0b03b16SSerapheim Dimitropoulos /* default target for number of metaslabs per top-level vdev */ 79a0b03b16SSerapheim Dimitropoulos int zfs_vdev_default_ms_count = 200; 8086714001SSerapheim Dimitropoulos 81b4bf0cf0SDon Brady /* minimum number of metaslabs per top-level vdev */ 82a0b03b16SSerapheim Dimitropoulos int zfs_vdev_min_ms_count = 16; 8386714001SSerapheim Dimitropoulos 84b4bf0cf0SDon Brady /* practical upper limit of total metaslabs per top-level vdev */ 85a0b03b16SSerapheim Dimitropoulos int zfs_vdev_ms_count_limit = 1ULL << 17; 86b4bf0cf0SDon Brady 87b4bf0cf0SDon Brady /* lower limit for metaslab size (512M) */ 88a0b03b16SSerapheim Dimitropoulos int zfs_vdev_default_ms_shift = 29; 8986714001SSerapheim Dimitropoulos 90a0b03b16SSerapheim Dimitropoulos /* upper limit for metaslab size (16G) */ 91a0b03b16SSerapheim Dimitropoulos int zfs_vdev_max_ms_shift = 34; 92b4bf0cf0SDon Brady 9386714001SSerapheim Dimitropoulos boolean_t vdev_validate_skip = B_FALSE; 9486714001SSerapheim Dimitropoulos 95bf3e216cSMatthew Ahrens /* 9686714001SSerapheim Dimitropoulos * Since the DTL space map of a vdev is not expected to have a lot of 9786714001SSerapheim Dimitropoulos * entries, we default its block size to 4K. 98bf3e216cSMatthew Ahrens */ 99814dcd43SSerapheim Dimitropoulos int zfs_vdev_dtl_sm_blksz = (1 << 12); 100bf3e216cSMatthew Ahrens 101165c5c6fSJohn Poduska /* 102165c5c6fSJohn Poduska * Ignore errors during scrub/resilver. Allows to work around resilver 103165c5c6fSJohn Poduska * upon import when there are pool errors. 104165c5c6fSJohn Poduska */ 105165c5c6fSJohn Poduska int zfs_scan_ignore_errors = 0; 106165c5c6fSJohn Poduska 10786714001SSerapheim Dimitropoulos /* 10886714001SSerapheim Dimitropoulos * vdev-wide space maps that have lots of entries written to them at 10986714001SSerapheim Dimitropoulos * the end of each transaction can benefit from a higher I/O bandwidth 11086714001SSerapheim Dimitropoulos * (e.g. vdev_obsolete_sm), thus we default their block size to 128K. 11186714001SSerapheim Dimitropoulos */ 112814dcd43SSerapheim Dimitropoulos int zfs_vdev_standard_sm_blksz = (1 << 17); 1136f793812SPavel Zakharov 11493a1902eSMatthew Ahrens int zfs_ashift_min; 11593a1902eSMatthew Ahrens 1163ee8c80cSPavel Zakharov /*PRINTFLIKE2*/ 1173ee8c80cSPavel Zakharov void 1183ee8c80cSPavel Zakharov vdev_dbgmsg(vdev_t *vd, const char *fmt, ...) 1193ee8c80cSPavel Zakharov { 1203ee8c80cSPavel Zakharov va_list adx; 1213ee8c80cSPavel Zakharov char buf[256]; 1223ee8c80cSPavel Zakharov 1233ee8c80cSPavel Zakharov va_start(adx, fmt); 1243ee8c80cSPavel Zakharov (void) vsnprintf(buf, sizeof (buf), fmt, adx); 1253ee8c80cSPavel Zakharov va_end(adx); 1263ee8c80cSPavel Zakharov 1273ee8c80cSPavel Zakharov if (vd->vdev_path != NULL) { 1283ee8c80cSPavel Zakharov zfs_dbgmsg("%s vdev '%s': %s", vd->vdev_ops->vdev_op_type, 1293ee8c80cSPavel Zakharov vd->vdev_path, buf); 1303ee8c80cSPavel Zakharov } else { 1313ee8c80cSPavel Zakharov zfs_dbgmsg("%s-%llu vdev (guid %llu): %s", 1323ee8c80cSPavel Zakharov vd->vdev_ops->vdev_op_type, 1333ee8c80cSPavel Zakharov (u_longlong_t)vd->vdev_id, 1343ee8c80cSPavel Zakharov (u_longlong_t)vd->vdev_guid, buf); 1353ee8c80cSPavel Zakharov } 1363ee8c80cSPavel Zakharov } 1373ee8c80cSPavel Zakharov 1386f793812SPavel Zakharov void 1396f793812SPavel Zakharov vdev_dbgmsg_print_tree(vdev_t *vd, int indent) 1406f793812SPavel Zakharov { 1416f793812SPavel Zakharov char state[20]; 1426f793812SPavel Zakharov 1436f793812SPavel Zakharov if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops) { 1446f793812SPavel Zakharov zfs_dbgmsg("%*svdev %u: %s", indent, "", vd->vdev_id, 1456f793812SPavel Zakharov vd->vdev_ops->vdev_op_type); 1466f793812SPavel Zakharov return; 1476f793812SPavel Zakharov } 1486f793812SPavel Zakharov 1496f793812SPavel Zakharov switch (vd->vdev_state) { 1506f793812SPavel Zakharov case VDEV_STATE_UNKNOWN: 1516f793812SPavel Zakharov (void) snprintf(state, sizeof (state), "unknown"); 1526f793812SPavel Zakharov break; 1536f793812SPavel Zakharov case VDEV_STATE_CLOSED: 1546f793812SPavel Zakharov (void) snprintf(state, sizeof (state), "closed"); 1556f793812SPavel Zakharov break; 1566f793812SPavel Zakharov case VDEV_STATE_OFFLINE: 1576f793812SPavel Zakharov (void) snprintf(state, sizeof (state), "offline"); 1586f793812SPavel Zakharov break; 1596f793812SPavel Zakharov case VDEV_STATE_REMOVED: 1606f793812SPavel Zakharov (void) snprintf(state, sizeof (state), "removed"); 1616f793812SPavel Zakharov break; 1626f793812SPavel Zakharov case VDEV_STATE_CANT_OPEN: 1636f793812SPavel Zakharov (void) snprintf(state, sizeof (state), "can't open"); 1646f793812SPavel Zakharov break; 1656f793812SPavel Zakharov case VDEV_STATE_FAULTED: 1666f793812SPavel Zakharov (void) snprintf(state, sizeof (state), "faulted"); 1676f793812SPavel Zakharov break; 1686f793812SPavel Zakharov case VDEV_STATE_DEGRADED: 1696f793812SPavel Zakharov (void) snprintf(state, sizeof (state), "degraded"); 1706f793812SPavel Zakharov break; 1716f793812SPavel Zakharov case VDEV_STATE_HEALTHY: 1726f793812SPavel Zakharov (void) snprintf(state, sizeof (state), "healthy"); 1736f793812SPavel Zakharov break; 1746f793812SPavel Zakharov default: 1756f793812SPavel Zakharov (void) snprintf(state, sizeof (state), "<state %u>", 1766f793812SPavel Zakharov (uint_t)vd->vdev_state); 1776f793812SPavel Zakharov } 1786f793812SPavel Zakharov 1796f793812SPavel Zakharov zfs_dbgmsg("%*svdev %u: %s%s, guid: %llu, path: %s, %s", indent, 180c7a7b2faSAndriy Gapon "", (int)vd->vdev_id, vd->vdev_ops->vdev_op_type, 1816f793812SPavel Zakharov vd->vdev_islog ? " (log)" : "", 1826f793812SPavel Zakharov (u_longlong_t)vd->vdev_guid, 1836f793812SPavel Zakharov vd->vdev_path ? vd->vdev_path : "N/A", state); 1846f793812SPavel Zakharov 1856f793812SPavel Zakharov for (uint64_t i = 0; i < vd->vdev_children; i++) 1866f793812SPavel Zakharov vdev_dbgmsg_print_tree(vd->vdev_child[i], indent + 2); 1876f793812SPavel Zakharov } 1886f793812SPavel Zakharov 189fa9e4066Sahrens /* 190fa9e4066Sahrens * Given a vdev type, return the appropriate ops vector. 191fa9e4066Sahrens */ 192fa9e4066Sahrens static vdev_ops_t * 193fa9e4066Sahrens vdev_getops(const char *type) 194fa9e4066Sahrens { 195fa9e4066Sahrens vdev_ops_t *ops, **opspp; 196fa9e4066Sahrens 197fa9e4066Sahrens for (opspp = vdev_ops_table; (ops = *opspp) != NULL; opspp++) 198fa9e4066Sahrens if (strcmp(ops->vdev_op_type, type) == 0) 199fa9e4066Sahrens break; 200fa9e4066Sahrens 201fa9e4066Sahrens return (ops); 202fa9e4066Sahrens } 203fa9e4066Sahrens 204663207adSDon Brady /* 205663207adSDon Brady * Derive the enumerated alloction bias from string input. 206*bbf21555SRichard Lowe * String origin is either the per-vdev zap or zpool(8). 207663207adSDon Brady */ 208663207adSDon Brady static vdev_alloc_bias_t 209663207adSDon Brady vdev_derive_alloc_bias(const char *bias) 210663207adSDon Brady { 211663207adSDon Brady vdev_alloc_bias_t alloc_bias = VDEV_BIAS_NONE; 212663207adSDon Brady 213663207adSDon Brady if (strcmp(bias, VDEV_ALLOC_BIAS_LOG) == 0) 214663207adSDon Brady alloc_bias = VDEV_BIAS_LOG; 215663207adSDon Brady else if (strcmp(bias, VDEV_ALLOC_BIAS_SPECIAL) == 0) 216663207adSDon Brady alloc_bias = VDEV_BIAS_SPECIAL; 217663207adSDon Brady else if (strcmp(bias, VDEV_ALLOC_BIAS_DEDUP) == 0) 218663207adSDon Brady alloc_bias = VDEV_BIAS_DEDUP; 219663207adSDon Brady 220663207adSDon Brady return (alloc_bias); 221663207adSDon Brady } 222663207adSDon Brady 223094e47e9SGeorge Wilson /* ARGSUSED */ 224094e47e9SGeorge Wilson void 2254d7988d6SPaul Dagnelie vdev_default_xlate(vdev_t *vd, const range_seg64_t *in, range_seg64_t *res) 226094e47e9SGeorge Wilson { 227094e47e9SGeorge Wilson res->rs_start = in->rs_start; 228094e47e9SGeorge Wilson res->rs_end = in->rs_end; 229094e47e9SGeorge Wilson } 230094e47e9SGeorge Wilson 231fa9e4066Sahrens /* 232fa9e4066Sahrens * Default asize function: return the MAX of psize with the asize of 233fa9e4066Sahrens * all children. This is what's used by anything other than RAID-Z. 234fa9e4066Sahrens */ 235fa9e4066Sahrens uint64_t 236fa9e4066Sahrens vdev_default_asize(vdev_t *vd, uint64_t psize) 237fa9e4066Sahrens { 238ecc2d604Sbonwick uint64_t asize = P2ROUNDUP(psize, 1ULL << vd->vdev_top->vdev_ashift); 239fa9e4066Sahrens uint64_t csize; 240fa9e4066Sahrens 241573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) { 242fa9e4066Sahrens csize = vdev_psize_to_asize(vd->vdev_child[c], psize); 243fa9e4066Sahrens asize = MAX(asize, csize); 244fa9e4066Sahrens } 245fa9e4066Sahrens 246fa9e4066Sahrens return (asize); 247fa9e4066Sahrens } 248fa9e4066Sahrens 2492a79c5feSlling /* 250573ca77eSGeorge Wilson * Get the minimum allocatable size. We define the allocatable size as 251573ca77eSGeorge Wilson * the vdev's asize rounded to the nearest metaslab. This allows us to 252573ca77eSGeorge Wilson * replace or attach devices which don't have the same physical size but 253573ca77eSGeorge Wilson * can still satisfy the same number of allocations. 2542a79c5feSlling */ 2552a79c5feSlling uint64_t 256573ca77eSGeorge Wilson vdev_get_min_asize(vdev_t *vd) 2572a79c5feSlling { 258573ca77eSGeorge Wilson vdev_t *pvd = vd->vdev_parent; 2592a79c5feSlling 260573ca77eSGeorge Wilson /* 2614263d13fSGeorge Wilson * If our parent is NULL (inactive spare or cache) or is the root, 262573ca77eSGeorge Wilson * just return our own asize. 263573ca77eSGeorge Wilson */ 264573ca77eSGeorge Wilson if (pvd == NULL) 265573ca77eSGeorge Wilson return (vd->vdev_asize); 2662a79c5feSlling 2672a79c5feSlling /* 268573ca77eSGeorge Wilson * The top-level vdev just returns the allocatable size rounded 269573ca77eSGeorge Wilson * to the nearest metaslab. 2702a79c5feSlling */ 271573ca77eSGeorge Wilson if (vd == vd->vdev_top) 272573ca77eSGeorge Wilson return (P2ALIGN(vd->vdev_asize, 1ULL << vd->vdev_ms_shift)); 2732a79c5feSlling 274573ca77eSGeorge Wilson /* 275573ca77eSGeorge Wilson * The allocatable space for a raidz vdev is N * sizeof(smallest child), 276573ca77eSGeorge Wilson * so each child must provide at least 1/Nth of its asize. 277573ca77eSGeorge Wilson */ 278573ca77eSGeorge Wilson if (pvd->vdev_ops == &vdev_raidz_ops) 279c040c10cSSteven Hartland return ((pvd->vdev_min_asize + pvd->vdev_children - 1) / 280c040c10cSSteven Hartland pvd->vdev_children); 2812a79c5feSlling 282573ca77eSGeorge Wilson return (pvd->vdev_min_asize); 283573ca77eSGeorge Wilson } 2842a79c5feSlling 285573ca77eSGeorge Wilson void 286573ca77eSGeorge Wilson vdev_set_min_asize(vdev_t *vd) 287573ca77eSGeorge Wilson { 288573ca77eSGeorge Wilson vd->vdev_min_asize = vdev_get_min_asize(vd); 289573ca77eSGeorge Wilson 290573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 291573ca77eSGeorge Wilson vdev_set_min_asize(vd->vdev_child[c]); 2922a79c5feSlling } 2932a79c5feSlling 294fa9e4066Sahrens vdev_t * 295fa9e4066Sahrens vdev_lookup_top(spa_t *spa, uint64_t vdev) 296fa9e4066Sahrens { 297fa9e4066Sahrens vdev_t *rvd = spa->spa_root_vdev; 298fa9e4066Sahrens 299e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 300e05725b1Sbonwick 301088f3894Sahrens if (vdev < rvd->vdev_children) { 302088f3894Sahrens ASSERT(rvd->vdev_child[vdev] != NULL); 303fa9e4066Sahrens return (rvd->vdev_child[vdev]); 304088f3894Sahrens } 305fa9e4066Sahrens 306fa9e4066Sahrens return (NULL); 307fa9e4066Sahrens } 308fa9e4066Sahrens 309fa9e4066Sahrens vdev_t * 310fa9e4066Sahrens vdev_lookup_by_guid(vdev_t *vd, uint64_t guid) 311fa9e4066Sahrens { 312fa9e4066Sahrens vdev_t *mvd; 313fa9e4066Sahrens 3140e34b6a7Sbonwick if (vd->vdev_guid == guid) 315fa9e4066Sahrens return (vd); 316fa9e4066Sahrens 317573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 318fa9e4066Sahrens if ((mvd = vdev_lookup_by_guid(vd->vdev_child[c], guid)) != 319fa9e4066Sahrens NULL) 320fa9e4066Sahrens return (mvd); 321fa9e4066Sahrens 322fa9e4066Sahrens return (NULL); 323fa9e4066Sahrens } 324fa9e4066Sahrens 32512380e1eSArne Jansen static int 32612380e1eSArne Jansen vdev_count_leaves_impl(vdev_t *vd) 32712380e1eSArne Jansen { 32812380e1eSArne Jansen int n = 0; 32912380e1eSArne Jansen 33012380e1eSArne Jansen if (vd->vdev_ops->vdev_op_leaf) 33112380e1eSArne Jansen return (1); 33212380e1eSArne Jansen 33312380e1eSArne Jansen for (int c = 0; c < vd->vdev_children; c++) 33412380e1eSArne Jansen n += vdev_count_leaves_impl(vd->vdev_child[c]); 33512380e1eSArne Jansen 33612380e1eSArne Jansen return (n); 33712380e1eSArne Jansen } 33812380e1eSArne Jansen 33912380e1eSArne Jansen int 34012380e1eSArne Jansen vdev_count_leaves(spa_t *spa) 34112380e1eSArne Jansen { 34212380e1eSArne Jansen return (vdev_count_leaves_impl(spa->spa_root_vdev)); 34312380e1eSArne Jansen } 34412380e1eSArne Jansen 345fa9e4066Sahrens void 346fa9e4066Sahrens vdev_add_child(vdev_t *pvd, vdev_t *cvd) 347fa9e4066Sahrens { 348fa9e4066Sahrens size_t oldsize, newsize; 349fa9e4066Sahrens uint64_t id = cvd->vdev_id; 350fa9e4066Sahrens vdev_t **newchild; 35181cd5c55SMatthew Ahrens spa_t *spa = cvd->vdev_spa; 352fa9e4066Sahrens 35381cd5c55SMatthew Ahrens ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 354fa9e4066Sahrens ASSERT(cvd->vdev_parent == NULL); 355fa9e4066Sahrens 356fa9e4066Sahrens cvd->vdev_parent = pvd; 357fa9e4066Sahrens 358fa9e4066Sahrens if (pvd == NULL) 359fa9e4066Sahrens return; 360fa9e4066Sahrens 361fa9e4066Sahrens ASSERT(id >= pvd->vdev_children || pvd->vdev_child[id] == NULL); 362fa9e4066Sahrens 363fa9e4066Sahrens oldsize = pvd->vdev_children * sizeof (vdev_t *); 364fa9e4066Sahrens pvd->vdev_children = MAX(pvd->vdev_children, id + 1); 365fa9e4066Sahrens newsize = pvd->vdev_children * sizeof (vdev_t *); 366fa9e4066Sahrens 367fa9e4066Sahrens newchild = kmem_zalloc(newsize, KM_SLEEP); 368fa9e4066Sahrens if (pvd->vdev_child != NULL) { 369fa9e4066Sahrens bcopy(pvd->vdev_child, newchild, oldsize); 370fa9e4066Sahrens kmem_free(pvd->vdev_child, oldsize); 371fa9e4066Sahrens } 372fa9e4066Sahrens 373fa9e4066Sahrens pvd->vdev_child = newchild; 374fa9e4066Sahrens pvd->vdev_child[id] = cvd; 375fa9e4066Sahrens 376fa9e4066Sahrens cvd->vdev_top = (pvd->vdev_top ? pvd->vdev_top: cvd); 377fa9e4066Sahrens ASSERT(cvd->vdev_top->vdev_parent->vdev_parent == NULL); 378fa9e4066Sahrens 379fa9e4066Sahrens /* 380fa9e4066Sahrens * Walk up all ancestors to update guid sum. 381fa9e4066Sahrens */ 382fa9e4066Sahrens for (; pvd != NULL; pvd = pvd->vdev_parent) 383fa9e4066Sahrens pvd->vdev_guid_sum += cvd->vdev_guid_sum; 384e0f1c0afSOlaf Faaland 385e0f1c0afSOlaf Faaland if (cvd->vdev_ops->vdev_op_leaf) { 386e0f1c0afSOlaf Faaland list_insert_head(&cvd->vdev_spa->spa_leaf_list, cvd); 387e0f1c0afSOlaf Faaland cvd->vdev_spa->spa_leaf_list_gen++; 388e0f1c0afSOlaf Faaland } 389fa9e4066Sahrens } 390fa9e4066Sahrens 391fa9e4066Sahrens void 392fa9e4066Sahrens vdev_remove_child(vdev_t *pvd, vdev_t *cvd) 393fa9e4066Sahrens { 394fa9e4066Sahrens int c; 395fa9e4066Sahrens uint_t id = cvd->vdev_id; 396fa9e4066Sahrens 397fa9e4066Sahrens ASSERT(cvd->vdev_parent == pvd); 398fa9e4066Sahrens 399fa9e4066Sahrens if (pvd == NULL) 400fa9e4066Sahrens return; 401fa9e4066Sahrens 402fa9e4066Sahrens ASSERT(id < pvd->vdev_children); 403fa9e4066Sahrens ASSERT(pvd->vdev_child[id] == cvd); 404fa9e4066Sahrens 405fa9e4066Sahrens pvd->vdev_child[id] = NULL; 406fa9e4066Sahrens cvd->vdev_parent = NULL; 407fa9e4066Sahrens 408fa9e4066Sahrens for (c = 0; c < pvd->vdev_children; c++) 409fa9e4066Sahrens if (pvd->vdev_child[c]) 410fa9e4066Sahrens break; 411fa9e4066Sahrens 412fa9e4066Sahrens if (c == pvd->vdev_children) { 413fa9e4066Sahrens kmem_free(pvd->vdev_child, c * sizeof (vdev_t *)); 414fa9e4066Sahrens pvd->vdev_child = NULL; 415fa9e4066Sahrens pvd->vdev_children = 0; 416fa9e4066Sahrens } 417fa9e4066Sahrens 418e0f1c0afSOlaf Faaland if (cvd->vdev_ops->vdev_op_leaf) { 419e0f1c0afSOlaf Faaland spa_t *spa = cvd->vdev_spa; 420e0f1c0afSOlaf Faaland list_remove(&spa->spa_leaf_list, cvd); 421e0f1c0afSOlaf Faaland spa->spa_leaf_list_gen++; 422e0f1c0afSOlaf Faaland } 423e0f1c0afSOlaf Faaland 424fa9e4066Sahrens /* 425fa9e4066Sahrens * Walk up all ancestors to update guid sum. 426fa9e4066Sahrens */ 427fa9e4066Sahrens for (; pvd != NULL; pvd = pvd->vdev_parent) 428fa9e4066Sahrens pvd->vdev_guid_sum -= cvd->vdev_guid_sum; 429fa9e4066Sahrens } 430fa9e4066Sahrens 431fa9e4066Sahrens /* 432fa9e4066Sahrens * Remove any holes in the child array. 433fa9e4066Sahrens */ 434fa9e4066Sahrens void 435fa9e4066Sahrens vdev_compact_children(vdev_t *pvd) 436fa9e4066Sahrens { 437fa9e4066Sahrens vdev_t **newchild, *cvd; 438fa9e4066Sahrens int oldc = pvd->vdev_children; 439573ca77eSGeorge Wilson int newc; 440fa9e4066Sahrens 441e14bb325SJeff Bonwick ASSERT(spa_config_held(pvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); 442fa9e4066Sahrens 443573ca77eSGeorge Wilson for (int c = newc = 0; c < oldc; c++) 444fa9e4066Sahrens if (pvd->vdev_child[c]) 445fa9e4066Sahrens newc++; 446fa9e4066Sahrens 447fa9e4066Sahrens newchild = kmem_alloc(newc * sizeof (vdev_t *), KM_SLEEP); 448fa9e4066Sahrens 449573ca77eSGeorge Wilson for (int c = newc = 0; c < oldc; c++) { 450fa9e4066Sahrens if ((cvd = pvd->vdev_child[c]) != NULL) { 451fa9e4066Sahrens newchild[newc] = cvd; 452fa9e4066Sahrens cvd->vdev_id = newc++; 453fa9e4066Sahrens } 454fa9e4066Sahrens } 455fa9e4066Sahrens 456fa9e4066Sahrens kmem_free(pvd->vdev_child, oldc * sizeof (vdev_t *)); 457fa9e4066Sahrens pvd->vdev_child = newchild; 458fa9e4066Sahrens pvd->vdev_children = newc; 459fa9e4066Sahrens } 460fa9e4066Sahrens 461fa9e4066Sahrens /* 462fa9e4066Sahrens * Allocate and minimally initialize a vdev_t. 463fa9e4066Sahrens */ 46488ecc943SGeorge Wilson vdev_t * 465fa9e4066Sahrens vdev_alloc_common(spa_t *spa, uint_t id, uint64_t guid, vdev_ops_t *ops) 466fa9e4066Sahrens { 467fa9e4066Sahrens vdev_t *vd; 4685cabbc6bSPrashanth Sreenivasa vdev_indirect_config_t *vic; 469fa9e4066Sahrens 470fa9e4066Sahrens vd = kmem_zalloc(sizeof (vdev_t), KM_SLEEP); 4715cabbc6bSPrashanth Sreenivasa vic = &vd->vdev_indirect_config; 472fa9e4066Sahrens 4730e34b6a7Sbonwick if (spa->spa_root_vdev == NULL) { 4740e34b6a7Sbonwick ASSERT(ops == &vdev_root_ops); 4750e34b6a7Sbonwick spa->spa_root_vdev = vd; 476e9103aaeSGarrett D'Amore spa->spa_load_guid = spa_generate_guid(NULL); 4770e34b6a7Sbonwick } 4780e34b6a7Sbonwick 47988ecc943SGeorge Wilson if (guid == 0 && ops != &vdev_hole_ops) { 4800e34b6a7Sbonwick if (spa->spa_root_vdev == vd) { 4810e34b6a7Sbonwick /* 4820e34b6a7Sbonwick * The root vdev's guid will also be the pool guid, 4830e34b6a7Sbonwick * which must be unique among all pools. 4840e34b6a7Sbonwick */ 4851195e687SMark J Musante guid = spa_generate_guid(NULL); 4860e34b6a7Sbonwick } else { 4870e34b6a7Sbonwick /* 4880e34b6a7Sbonwick * Any other vdev's guid must be unique within the pool. 4890e34b6a7Sbonwick */ 4901195e687SMark J Musante guid = spa_generate_guid(spa); 4910e34b6a7Sbonwick } 4920e34b6a7Sbonwick ASSERT(!spa_guid_exists(spa_guid(spa), guid)); 4930e34b6a7Sbonwick } 4940e34b6a7Sbonwick 495fa9e4066Sahrens vd->vdev_spa = spa; 496fa9e4066Sahrens vd->vdev_id = id; 497fa9e4066Sahrens vd->vdev_guid = guid; 498fa9e4066Sahrens vd->vdev_guid_sum = guid; 499fa9e4066Sahrens vd->vdev_ops = ops; 500fa9e4066Sahrens vd->vdev_state = VDEV_STATE_CLOSED; 50188ecc943SGeorge Wilson vd->vdev_ishole = (ops == &vdev_hole_ops); 5025cabbc6bSPrashanth Sreenivasa vic->vic_prev_indirect_vdev = UINT64_MAX; 5035cabbc6bSPrashanth Sreenivasa 5045cabbc6bSPrashanth Sreenivasa rw_init(&vd->vdev_indirect_rwlock, NULL, RW_DEFAULT, NULL); 5055cabbc6bSPrashanth Sreenivasa mutex_init(&vd->vdev_obsolete_lock, NULL, MUTEX_DEFAULT, NULL); 5064d7988d6SPaul Dagnelie vd->vdev_obsolete_segments = range_tree_create(NULL, RANGE_SEG64, NULL, 5074d7988d6SPaul Dagnelie 0, 0); 508fa9e4066Sahrens 509084fd14fSBrian Behlendorf list_link_init(&vd->vdev_initialize_node); 510e0f1c0afSOlaf Faaland list_link_init(&vd->vdev_leaf_node); 511084fd14fSBrian Behlendorf list_link_init(&vd->vdev_trim_node); 512fa9e4066Sahrens mutex_init(&vd->vdev_dtl_lock, NULL, MUTEX_DEFAULT, NULL); 5135ad82045Snd mutex_init(&vd->vdev_stat_lock, NULL, MUTEX_DEFAULT, NULL); 514e14bb325SJeff Bonwick mutex_init(&vd->vdev_probe_lock, NULL, MUTEX_DEFAULT, NULL); 515a3874b8bSToomas Soome mutex_init(&vd->vdev_scan_io_queue_lock, NULL, MUTEX_DEFAULT, NULL); 516094e47e9SGeorge Wilson mutex_init(&vd->vdev_initialize_lock, NULL, MUTEX_DEFAULT, NULL); 517094e47e9SGeorge Wilson mutex_init(&vd->vdev_initialize_io_lock, NULL, MUTEX_DEFAULT, NULL); 518094e47e9SGeorge Wilson cv_init(&vd->vdev_initialize_cv, NULL, CV_DEFAULT, NULL); 519094e47e9SGeorge Wilson cv_init(&vd->vdev_initialize_io_cv, NULL, CV_DEFAULT, NULL); 520084fd14fSBrian Behlendorf mutex_init(&vd->vdev_trim_lock, NULL, MUTEX_DEFAULT, NULL); 521084fd14fSBrian Behlendorf mutex_init(&vd->vdev_autotrim_lock, NULL, MUTEX_DEFAULT, NULL); 522084fd14fSBrian Behlendorf mutex_init(&vd->vdev_trim_io_lock, NULL, MUTEX_DEFAULT, NULL); 523084fd14fSBrian Behlendorf cv_init(&vd->vdev_trim_cv, NULL, CV_DEFAULT, NULL); 524084fd14fSBrian Behlendorf cv_init(&vd->vdev_autotrim_cv, NULL, CV_DEFAULT, NULL); 525084fd14fSBrian Behlendorf cv_init(&vd->vdev_trim_io_cv, NULL, CV_DEFAULT, NULL); 526094e47e9SGeorge Wilson 5278ad4d6ddSJeff Bonwick for (int t = 0; t < DTL_TYPES; t++) { 5284d7988d6SPaul Dagnelie vd->vdev_dtl[t] = range_tree_create(NULL, RANGE_SEG64, NULL, 0, 5294d7988d6SPaul Dagnelie 0); 5308ad4d6ddSJeff Bonwick } 531b7b2590dSMatthew Ahrens txg_list_create(&vd->vdev_ms_list, spa, 532fa9e4066Sahrens offsetof(struct metaslab, ms_txg_node)); 533b7b2590dSMatthew Ahrens txg_list_create(&vd->vdev_dtl_list, spa, 534fa9e4066Sahrens offsetof(struct vdev, vdev_dtl_node)); 535fa9e4066Sahrens vd->vdev_stat.vs_timestamp = gethrtime(); 5363d7072f8Seschrock vdev_queue_init(vd); 5373d7072f8Seschrock vdev_cache_init(vd); 538fa9e4066Sahrens 539fa9e4066Sahrens return (vd); 540fa9e4066Sahrens } 541fa9e4066Sahrens 542fa9e4066Sahrens /* 543fa9e4066Sahrens * Allocate a new vdev. The 'alloctype' is used to control whether we are 544fa9e4066Sahrens * creating a new vdev or loading an existing one - the behavior is slightly 545fa9e4066Sahrens * different for each case. 546fa9e4066Sahrens */ 54799653d4eSeschrock int 54899653d4eSeschrock vdev_alloc(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent, uint_t id, 54999653d4eSeschrock int alloctype) 550fa9e4066Sahrens { 551fa9e4066Sahrens vdev_ops_t *ops; 552fa9e4066Sahrens char *type; 5538654d025Sperrin uint64_t guid = 0, islog, nparity; 554fa9e4066Sahrens vdev_t *vd; 5555cabbc6bSPrashanth Sreenivasa vdev_indirect_config_t *vic; 556663207adSDon Brady vdev_alloc_bias_t alloc_bias = VDEV_BIAS_NONE; 557663207adSDon Brady boolean_t top_level = (parent && !parent->vdev_parent); 558fa9e4066Sahrens 559e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 560fa9e4066Sahrens 561fa9e4066Sahrens if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) 562be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 563fa9e4066Sahrens 564fa9e4066Sahrens if ((ops = vdev_getops(type)) == NULL) 565be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 566fa9e4066Sahrens 567fa9e4066Sahrens /* 568fa9e4066Sahrens * If this is a load, get the vdev guid from the nvlist. 569fa9e4066Sahrens * Otherwise, vdev_alloc_common() will generate one for us. 570fa9e4066Sahrens */ 571fa9e4066Sahrens if (alloctype == VDEV_ALLOC_LOAD) { 572fa9e4066Sahrens uint64_t label_id; 573fa9e4066Sahrens 574fa9e4066Sahrens if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, &label_id) || 575fa9e4066Sahrens label_id != id) 576be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 577fa9e4066Sahrens 578fa9e4066Sahrens if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) 579be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 58099653d4eSeschrock } else if (alloctype == VDEV_ALLOC_SPARE) { 58199653d4eSeschrock if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) 582be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 583fa94a07fSbrendan } else if (alloctype == VDEV_ALLOC_L2CACHE) { 584fa94a07fSbrendan if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) 585be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 58621ecdf64SLin Ling } else if (alloctype == VDEV_ALLOC_ROOTPOOL) { 58721ecdf64SLin Ling if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) != 0) 588be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 589fa9e4066Sahrens } 590fa9e4066Sahrens 59199653d4eSeschrock /* 59299653d4eSeschrock * The first allocated vdev must be of type 'root'. 59399653d4eSeschrock */ 59499653d4eSeschrock if (ops != &vdev_root_ops && spa->spa_root_vdev == NULL) 595be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 59699653d4eSeschrock 5978654d025Sperrin /* 5988654d025Sperrin * Determine whether we're a log vdev. 5998654d025Sperrin */ 6008654d025Sperrin islog = 0; 6018654d025Sperrin (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &islog); 602990b4856Slling if (islog && spa_version(spa) < SPA_VERSION_SLOGS) 603be6fd75aSMatthew Ahrens return (SET_ERROR(ENOTSUP)); 604fa9e4066Sahrens 60588ecc943SGeorge Wilson if (ops == &vdev_hole_ops && spa_version(spa) < SPA_VERSION_HOLES) 606be6fd75aSMatthew Ahrens return (SET_ERROR(ENOTSUP)); 60788ecc943SGeorge Wilson 60899653d4eSeschrock /* 6098654d025Sperrin * Set the nparity property for RAID-Z vdevs. 61099653d4eSeschrock */ 6118654d025Sperrin nparity = -1ULL; 61299653d4eSeschrock if (ops == &vdev_raidz_ops) { 61399653d4eSeschrock if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, 6148654d025Sperrin &nparity) == 0) { 615b24ab676SJeff Bonwick if (nparity == 0 || nparity > VDEV_RAIDZ_MAXPARITY) 616be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 61799653d4eSeschrock /* 618f94275ceSAdam Leventhal * Previous versions could only support 1 or 2 parity 619f94275ceSAdam Leventhal * device. 62099653d4eSeschrock */ 621f94275ceSAdam Leventhal if (nparity > 1 && 622f94275ceSAdam Leventhal spa_version(spa) < SPA_VERSION_RAIDZ2) 623be6fd75aSMatthew Ahrens return (SET_ERROR(ENOTSUP)); 624f94275ceSAdam Leventhal if (nparity > 2 && 625f94275ceSAdam Leventhal spa_version(spa) < SPA_VERSION_RAIDZ3) 626be6fd75aSMatthew Ahrens return (SET_ERROR(ENOTSUP)); 62799653d4eSeschrock } else { 62899653d4eSeschrock /* 62999653d4eSeschrock * We require the parity to be specified for SPAs that 63099653d4eSeschrock * support multiple parity levels. 63199653d4eSeschrock */ 632f94275ceSAdam Leventhal if (spa_version(spa) >= SPA_VERSION_RAIDZ2) 633be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 63499653d4eSeschrock /* 63599653d4eSeschrock * Otherwise, we default to 1 parity device for RAID-Z. 63699653d4eSeschrock */ 6378654d025Sperrin nparity = 1; 63899653d4eSeschrock } 63999653d4eSeschrock } else { 6408654d025Sperrin nparity = 0; 64199653d4eSeschrock } 6428654d025Sperrin ASSERT(nparity != -1ULL); 6438654d025Sperrin 644663207adSDon Brady /* 645663207adSDon Brady * If creating a top-level vdev, check for allocation classes input 646663207adSDon Brady */ 647663207adSDon Brady if (top_level && alloctype == VDEV_ALLOC_ADD) { 648663207adSDon Brady char *bias; 649663207adSDon Brady 650663207adSDon Brady if (nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS, 651663207adSDon Brady &bias) == 0) { 652663207adSDon Brady alloc_bias = vdev_derive_alloc_bias(bias); 653663207adSDon Brady 654663207adSDon Brady /* spa_vdev_add() expects feature to be enabled */ 655c1064fd7SJerry Jelinek if (alloc_bias != VDEV_BIAS_LOG && 656c1064fd7SJerry Jelinek spa->spa_load_state != SPA_LOAD_CREATE && 657663207adSDon Brady !spa_feature_is_enabled(spa, 658663207adSDon Brady SPA_FEATURE_ALLOCATION_CLASSES)) { 659663207adSDon Brady return (SET_ERROR(ENOTSUP)); 660663207adSDon Brady } 661663207adSDon Brady } 662663207adSDon Brady } 663663207adSDon Brady 6648654d025Sperrin vd = vdev_alloc_common(spa, id, guid, ops); 6655cabbc6bSPrashanth Sreenivasa vic = &vd->vdev_indirect_config; 6668654d025Sperrin 6678654d025Sperrin vd->vdev_islog = islog; 6688654d025Sperrin vd->vdev_nparity = nparity; 669663207adSDon Brady if (top_level && alloc_bias != VDEV_BIAS_NONE) 670663207adSDon Brady vd->vdev_alloc_bias = alloc_bias; 6718654d025Sperrin 6728654d025Sperrin if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &vd->vdev_path) == 0) 6738654d025Sperrin vd->vdev_path = spa_strdup(vd->vdev_path); 6748654d025Sperrin if (nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &vd->vdev_devid) == 0) 6758654d025Sperrin vd->vdev_devid = spa_strdup(vd->vdev_devid); 6768654d025Sperrin if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PHYS_PATH, 6778654d025Sperrin &vd->vdev_physpath) == 0) 6788654d025Sperrin vd->vdev_physpath = spa_strdup(vd->vdev_physpath); 6796809eb4eSEric Schrock if (nvlist_lookup_string(nv, ZPOOL_CONFIG_FRU, &vd->vdev_fru) == 0) 6806809eb4eSEric Schrock vd->vdev_fru = spa_strdup(vd->vdev_fru); 68199653d4eSeschrock 682afefbcddSeschrock /* 683afefbcddSeschrock * Set the whole_disk property. If it's not specified, leave the value 684afefbcddSeschrock * as -1. 685afefbcddSeschrock */ 686afefbcddSeschrock if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 687afefbcddSeschrock &vd->vdev_wholedisk) != 0) 688afefbcddSeschrock vd->vdev_wholedisk = -1ULL; 689afefbcddSeschrock 6905cabbc6bSPrashanth Sreenivasa ASSERT0(vic->vic_mapping_object); 6915cabbc6bSPrashanth Sreenivasa (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_OBJECT, 6925cabbc6bSPrashanth Sreenivasa &vic->vic_mapping_object); 6935cabbc6bSPrashanth Sreenivasa ASSERT0(vic->vic_births_object); 6945cabbc6bSPrashanth Sreenivasa (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_INDIRECT_BIRTHS, 6955cabbc6bSPrashanth Sreenivasa &vic->vic_births_object); 6965cabbc6bSPrashanth Sreenivasa ASSERT3U(vic->vic_prev_indirect_vdev, ==, UINT64_MAX); 6975cabbc6bSPrashanth Sreenivasa (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_PREV_INDIRECT_VDEV, 6985cabbc6bSPrashanth Sreenivasa &vic->vic_prev_indirect_vdev); 6995cabbc6bSPrashanth Sreenivasa 700ea8dc4b6Seschrock /* 701ea8dc4b6Seschrock * Look for the 'not present' flag. This will only be set if the device 702ea8dc4b6Seschrock * was not present at the time of import. 703ea8dc4b6Seschrock */ 7046809eb4eSEric Schrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, 7056809eb4eSEric Schrock &vd->vdev_not_present); 706ea8dc4b6Seschrock 707ecc2d604Sbonwick /* 708ecc2d604Sbonwick * Get the alignment requirement. 709ecc2d604Sbonwick */ 710ecc2d604Sbonwick (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASHIFT, &vd->vdev_ashift); 711ecc2d604Sbonwick 71288ecc943SGeorge Wilson /* 71388ecc943SGeorge Wilson * Retrieve the vdev creation time. 71488ecc943SGeorge Wilson */ 71588ecc943SGeorge Wilson (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_CREATE_TXG, 71688ecc943SGeorge Wilson &vd->vdev_crtxg); 71788ecc943SGeorge Wilson 718fa9e4066Sahrens /* 719fa9e4066Sahrens * If we're a top-level vdev, try to load the allocation parameters. 720fa9e4066Sahrens */ 721663207adSDon Brady if (top_level && 7221195e687SMark J Musante (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) { 723fa9e4066Sahrens (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_ARRAY, 724fa9e4066Sahrens &vd->vdev_ms_array); 725fa9e4066Sahrens (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_METASLAB_SHIFT, 726fa9e4066Sahrens &vd->vdev_ms_shift); 727fa9e4066Sahrens (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASIZE, 728fa9e4066Sahrens &vd->vdev_asize); 7293f9d6ad7SLin Ling (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVING, 7303f9d6ad7SLin Ling &vd->vdev_removing); 731215198a6SJoe Stein (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_VDEV_TOP_ZAP, 732215198a6SJoe Stein &vd->vdev_top_zap); 733215198a6SJoe Stein } else { 734215198a6SJoe Stein ASSERT0(vd->vdev_top_zap); 735fa9e4066Sahrens } 736fa9e4066Sahrens 737663207adSDon Brady if (top_level && alloctype != VDEV_ALLOC_ATTACH) { 738a1521560SJeff Bonwick ASSERT(alloctype == VDEV_ALLOC_LOAD || 7399f4ab4d8SGeorge Wilson alloctype == VDEV_ALLOC_ADD || 7401195e687SMark J Musante alloctype == VDEV_ALLOC_SPLIT || 7419f4ab4d8SGeorge Wilson alloctype == VDEV_ALLOC_ROOTPOOL); 742663207adSDon Brady /* Note: metaslab_group_create() is now deferred */ 743a1521560SJeff Bonwick } 744a1521560SJeff Bonwick 745215198a6SJoe Stein if (vd->vdev_ops->vdev_op_leaf && 746215198a6SJoe Stein (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_SPLIT)) { 747215198a6SJoe Stein (void) nvlist_lookup_uint64(nv, 748215198a6SJoe Stein ZPOOL_CONFIG_VDEV_LEAF_ZAP, &vd->vdev_leaf_zap); 749215198a6SJoe Stein } else { 750215198a6SJoe Stein ASSERT0(vd->vdev_leaf_zap); 751215198a6SJoe Stein } 752215198a6SJoe Stein 753fa9e4066Sahrens /* 7543d7072f8Seschrock * If we're a leaf vdev, try to load the DTL object and other state. 755fa9e4066Sahrens */ 756215198a6SJoe Stein 757c5904d13Seschrock if (vd->vdev_ops->vdev_op_leaf && 75821ecdf64SLin Ling (alloctype == VDEV_ALLOC_LOAD || alloctype == VDEV_ALLOC_L2CACHE || 75921ecdf64SLin Ling alloctype == VDEV_ALLOC_ROOTPOOL)) { 760c5904d13Seschrock if (alloctype == VDEV_ALLOC_LOAD) { 761c5904d13Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DTL, 7620713e232SGeorge Wilson &vd->vdev_dtl_object); 763c5904d13Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_UNSPARE, 764c5904d13Seschrock &vd->vdev_unspare); 765c5904d13Seschrock } 76621ecdf64SLin Ling 76721ecdf64SLin Ling if (alloctype == VDEV_ALLOC_ROOTPOOL) { 76821ecdf64SLin Ling uint64_t spare = 0; 76921ecdf64SLin Ling 77021ecdf64SLin Ling if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 77121ecdf64SLin Ling &spare) == 0 && spare) 77221ecdf64SLin Ling spa_spare_add(vd); 77321ecdf64SLin Ling } 77421ecdf64SLin Ling 775ecc2d604Sbonwick (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, 776ecc2d604Sbonwick &vd->vdev_offline); 777c5904d13Seschrock 778b4952e17SGeorge Wilson (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_RESILVER_TXG, 779b4952e17SGeorge Wilson &vd->vdev_resilver_txg); 780cb04b873SMark J Musante 781e4c795beSTom Caputi if (nvlist_exists(nv, ZPOOL_CONFIG_RESILVER_DEFER)) 7820c06d385Sjwpoduska vdev_defer_resilver(vd); 783e4c795beSTom Caputi 7843d7072f8Seschrock /* 7853d7072f8Seschrock * When importing a pool, we want to ignore the persistent fault 7863d7072f8Seschrock * state, as the diagnosis made on another system may not be 787069f55e2SEric Schrock * valid in the current context. Local vdevs will 788069f55e2SEric Schrock * remain in the faulted state. 7893d7072f8Seschrock */ 790b16da2e2SGeorge Wilson if (spa_load_state(spa) == SPA_LOAD_OPEN) { 7913d7072f8Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, 7923d7072f8Seschrock &vd->vdev_faulted); 7933d7072f8Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DEGRADED, 7943d7072f8Seschrock &vd->vdev_degraded); 7953d7072f8Seschrock (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, 7963d7072f8Seschrock &vd->vdev_removed); 797069f55e2SEric Schrock 798069f55e2SEric Schrock if (vd->vdev_faulted || vd->vdev_degraded) { 799069f55e2SEric Schrock char *aux; 800069f55e2SEric Schrock 801069f55e2SEric Schrock vd->vdev_label_aux = 802069f55e2SEric Schrock VDEV_AUX_ERR_EXCEEDED; 803069f55e2SEric Schrock if (nvlist_lookup_string(nv, 804069f55e2SEric Schrock ZPOOL_CONFIG_AUX_STATE, &aux) == 0 && 805069f55e2SEric Schrock strcmp(aux, "external") == 0) 806069f55e2SEric Schrock vd->vdev_label_aux = VDEV_AUX_EXTERNAL; 807069f55e2SEric Schrock } 8083d7072f8Seschrock } 809fa9e4066Sahrens } 810fa9e4066Sahrens 811fa9e4066Sahrens /* 812fa9e4066Sahrens * Add ourselves to the parent's list of children. 813fa9e4066Sahrens */ 814fa9e4066Sahrens vdev_add_child(parent, vd); 815fa9e4066Sahrens 81699653d4eSeschrock *vdp = vd; 81799653d4eSeschrock 81899653d4eSeschrock return (0); 819fa9e4066Sahrens } 820fa9e4066Sahrens 821fa9e4066Sahrens void 822fa9e4066Sahrens vdev_free(vdev_t *vd) 823fa9e4066Sahrens { 8243d7072f8Seschrock spa_t *spa = vd->vdev_spa; 825084fd14fSBrian Behlendorf 826094e47e9SGeorge Wilson ASSERT3P(vd->vdev_initialize_thread, ==, NULL); 827084fd14fSBrian Behlendorf ASSERT3P(vd->vdev_trim_thread, ==, NULL); 828084fd14fSBrian Behlendorf ASSERT3P(vd->vdev_autotrim_thread, ==, NULL); 829fa9e4066Sahrens 830a3874b8bSToomas Soome /* 831a3874b8bSToomas Soome * Scan queues are normally destroyed at the end of a scan. If the 832a3874b8bSToomas Soome * queue exists here, that implies the vdev is being removed while 833a3874b8bSToomas Soome * the scan is still running. 834a3874b8bSToomas Soome */ 835a3874b8bSToomas Soome if (vd->vdev_scan_io_queue != NULL) { 836a3874b8bSToomas Soome mutex_enter(&vd->vdev_scan_io_queue_lock); 837a3874b8bSToomas Soome dsl_scan_io_queue_destroy(vd->vdev_scan_io_queue); 838a3874b8bSToomas Soome vd->vdev_scan_io_queue = NULL; 839a3874b8bSToomas Soome mutex_exit(&vd->vdev_scan_io_queue_lock); 840a3874b8bSToomas Soome } 841a3874b8bSToomas Soome 842fa9e4066Sahrens /* 843fa9e4066Sahrens * vdev_free() implies closing the vdev first. This is simpler than 844fa9e4066Sahrens * trying to ensure complicated semantics for all callers. 845fa9e4066Sahrens */ 846fa9e4066Sahrens vdev_close(vd); 847fa9e4066Sahrens 848e14bb325SJeff Bonwick ASSERT(!list_link_active(&vd->vdev_config_dirty_node)); 849b24ab676SJeff Bonwick ASSERT(!list_link_active(&vd->vdev_state_dirty_node)); 850fa9e4066Sahrens 851fa9e4066Sahrens /* 852fa9e4066Sahrens * Free all children. 853fa9e4066Sahrens */ 854573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 855fa9e4066Sahrens vdev_free(vd->vdev_child[c]); 856fa9e4066Sahrens 857fa9e4066Sahrens ASSERT(vd->vdev_child == NULL); 858fa9e4066Sahrens ASSERT(vd->vdev_guid_sum == vd->vdev_guid); 859fa9e4066Sahrens 860fa9e4066Sahrens /* 861fa9e4066Sahrens * Discard allocation state. 862fa9e4066Sahrens */ 863a1521560SJeff Bonwick if (vd->vdev_mg != NULL) { 864fa9e4066Sahrens vdev_metaslab_fini(vd); 865a1521560SJeff Bonwick metaslab_group_destroy(vd->vdev_mg); 866814dcd43SSerapheim Dimitropoulos vd->vdev_mg = NULL; 867a1521560SJeff Bonwick } 868fa9e4066Sahrens 869fb09f5aaSMadhav Suresh ASSERT0(vd->vdev_stat.vs_space); 870fb09f5aaSMadhav Suresh ASSERT0(vd->vdev_stat.vs_dspace); 871fb09f5aaSMadhav Suresh ASSERT0(vd->vdev_stat.vs_alloc); 872fa9e4066Sahrens 873fa9e4066Sahrens /* 874fa9e4066Sahrens * Remove this vdev from its parent's child list. 875fa9e4066Sahrens */ 876fa9e4066Sahrens vdev_remove_child(vd->vdev_parent, vd); 877fa9e4066Sahrens 878fa9e4066Sahrens ASSERT(vd->vdev_parent == NULL); 879e0f1c0afSOlaf Faaland ASSERT(!list_link_active(&vd->vdev_leaf_node)); 880fa9e4066Sahrens 8813d7072f8Seschrock /* 8823d7072f8Seschrock * Clean up vdev structure. 8833d7072f8Seschrock */ 8843d7072f8Seschrock vdev_queue_fini(vd); 8853d7072f8Seschrock vdev_cache_fini(vd); 8863d7072f8Seschrock 8873d7072f8Seschrock if (vd->vdev_path) 8883d7072f8Seschrock spa_strfree(vd->vdev_path); 8893d7072f8Seschrock if (vd->vdev_devid) 8903d7072f8Seschrock spa_strfree(vd->vdev_devid); 8913d7072f8Seschrock if (vd->vdev_physpath) 8923d7072f8Seschrock spa_strfree(vd->vdev_physpath); 8936809eb4eSEric Schrock if (vd->vdev_fru) 8946809eb4eSEric Schrock spa_strfree(vd->vdev_fru); 8953d7072f8Seschrock 8963d7072f8Seschrock if (vd->vdev_isspare) 8973d7072f8Seschrock spa_spare_remove(vd); 898fa94a07fSbrendan if (vd->vdev_isl2cache) 899fa94a07fSbrendan spa_l2cache_remove(vd); 9003d7072f8Seschrock 9013d7072f8Seschrock txg_list_destroy(&vd->vdev_ms_list); 9023d7072f8Seschrock txg_list_destroy(&vd->vdev_dtl_list); 9038ad4d6ddSJeff Bonwick 9043d7072f8Seschrock mutex_enter(&vd->vdev_dtl_lock); 9050713e232SGeorge Wilson space_map_close(vd->vdev_dtl_sm); 9068ad4d6ddSJeff Bonwick for (int t = 0; t < DTL_TYPES; t++) { 9070713e232SGeorge Wilson range_tree_vacate(vd->vdev_dtl[t], NULL, NULL); 9080713e232SGeorge Wilson range_tree_destroy(vd->vdev_dtl[t]); 9098ad4d6ddSJeff Bonwick } 9103d7072f8Seschrock mutex_exit(&vd->vdev_dtl_lock); 9118ad4d6ddSJeff Bonwick 9125cabbc6bSPrashanth Sreenivasa EQUIV(vd->vdev_indirect_births != NULL, 9135cabbc6bSPrashanth Sreenivasa vd->vdev_indirect_mapping != NULL); 9145cabbc6bSPrashanth Sreenivasa if (vd->vdev_indirect_births != NULL) { 9155cabbc6bSPrashanth Sreenivasa vdev_indirect_mapping_close(vd->vdev_indirect_mapping); 9165cabbc6bSPrashanth Sreenivasa vdev_indirect_births_close(vd->vdev_indirect_births); 9175cabbc6bSPrashanth Sreenivasa } 9185cabbc6bSPrashanth Sreenivasa 9195cabbc6bSPrashanth Sreenivasa if (vd->vdev_obsolete_sm != NULL) { 9205cabbc6bSPrashanth Sreenivasa ASSERT(vd->vdev_removing || 9215cabbc6bSPrashanth Sreenivasa vd->vdev_ops == &vdev_indirect_ops); 9225cabbc6bSPrashanth Sreenivasa space_map_close(vd->vdev_obsolete_sm); 9235cabbc6bSPrashanth Sreenivasa vd->vdev_obsolete_sm = NULL; 9245cabbc6bSPrashanth Sreenivasa } 9255cabbc6bSPrashanth Sreenivasa range_tree_destroy(vd->vdev_obsolete_segments); 9265cabbc6bSPrashanth Sreenivasa rw_destroy(&vd->vdev_indirect_rwlock); 9275cabbc6bSPrashanth Sreenivasa mutex_destroy(&vd->vdev_obsolete_lock); 9285cabbc6bSPrashanth Sreenivasa 9293d7072f8Seschrock mutex_destroy(&vd->vdev_dtl_lock); 9303d7072f8Seschrock mutex_destroy(&vd->vdev_stat_lock); 931e14bb325SJeff Bonwick mutex_destroy(&vd->vdev_probe_lock); 932a3874b8bSToomas Soome mutex_destroy(&vd->vdev_scan_io_queue_lock); 933094e47e9SGeorge Wilson mutex_destroy(&vd->vdev_initialize_lock); 934094e47e9SGeorge Wilson mutex_destroy(&vd->vdev_initialize_io_lock); 935094e47e9SGeorge Wilson cv_destroy(&vd->vdev_initialize_io_cv); 936094e47e9SGeorge Wilson cv_destroy(&vd->vdev_initialize_cv); 937084fd14fSBrian Behlendorf mutex_destroy(&vd->vdev_trim_lock); 938084fd14fSBrian Behlendorf mutex_destroy(&vd->vdev_autotrim_lock); 939084fd14fSBrian Behlendorf mutex_destroy(&vd->vdev_trim_io_lock); 940084fd14fSBrian Behlendorf cv_destroy(&vd->vdev_trim_cv); 941084fd14fSBrian Behlendorf cv_destroy(&vd->vdev_autotrim_cv); 942084fd14fSBrian Behlendorf cv_destroy(&vd->vdev_trim_io_cv); 9433d7072f8Seschrock 9443d7072f8Seschrock if (vd == spa->spa_root_vdev) 9453d7072f8Seschrock spa->spa_root_vdev = NULL; 9463d7072f8Seschrock 9473d7072f8Seschrock kmem_free(vd, sizeof (vdev_t)); 948fa9e4066Sahrens } 949fa9e4066Sahrens 950fa9e4066Sahrens /* 951fa9e4066Sahrens * Transfer top-level vdev state from svd to tvd. 952fa9e4066Sahrens */ 953fa9e4066Sahrens static void 954fa9e4066Sahrens vdev_top_transfer(vdev_t *svd, vdev_t *tvd) 955fa9e4066Sahrens { 956fa9e4066Sahrens spa_t *spa = svd->vdev_spa; 957fa9e4066Sahrens metaslab_t *msp; 958fa9e4066Sahrens vdev_t *vd; 959fa9e4066Sahrens int t; 960fa9e4066Sahrens 961fa9e4066Sahrens ASSERT(tvd == tvd->vdev_top); 962fa9e4066Sahrens 963fa9e4066Sahrens tvd->vdev_ms_array = svd->vdev_ms_array; 964fa9e4066Sahrens tvd->vdev_ms_shift = svd->vdev_ms_shift; 965fa9e4066Sahrens tvd->vdev_ms_count = svd->vdev_ms_count; 966215198a6SJoe Stein tvd->vdev_top_zap = svd->vdev_top_zap; 967fa9e4066Sahrens 968fa9e4066Sahrens svd->vdev_ms_array = 0; 969fa9e4066Sahrens svd->vdev_ms_shift = 0; 970fa9e4066Sahrens svd->vdev_ms_count = 0; 971215198a6SJoe Stein svd->vdev_top_zap = 0; 972fa9e4066Sahrens 973cd0837ccSGeorge Wilson if (tvd->vdev_mg) 974cd0837ccSGeorge Wilson ASSERT3P(tvd->vdev_mg, ==, svd->vdev_mg); 975fa9e4066Sahrens tvd->vdev_mg = svd->vdev_mg; 976fa9e4066Sahrens tvd->vdev_ms = svd->vdev_ms; 977fa9e4066Sahrens 978fa9e4066Sahrens svd->vdev_mg = NULL; 979fa9e4066Sahrens svd->vdev_ms = NULL; 980ecc2d604Sbonwick 981ecc2d604Sbonwick if (tvd->vdev_mg != NULL) 982ecc2d604Sbonwick tvd->vdev_mg->mg_vd = tvd; 983fa9e4066Sahrens 98486714001SSerapheim Dimitropoulos tvd->vdev_checkpoint_sm = svd->vdev_checkpoint_sm; 98586714001SSerapheim Dimitropoulos svd->vdev_checkpoint_sm = NULL; 98686714001SSerapheim Dimitropoulos 987663207adSDon Brady tvd->vdev_alloc_bias = svd->vdev_alloc_bias; 988663207adSDon Brady svd->vdev_alloc_bias = VDEV_BIAS_NONE; 989663207adSDon Brady 990fa9e4066Sahrens tvd->vdev_stat.vs_alloc = svd->vdev_stat.vs_alloc; 991fa9e4066Sahrens tvd->vdev_stat.vs_space = svd->vdev_stat.vs_space; 99299653d4eSeschrock tvd->vdev_stat.vs_dspace = svd->vdev_stat.vs_dspace; 993fa9e4066Sahrens 994fa9e4066Sahrens svd->vdev_stat.vs_alloc = 0; 995fa9e4066Sahrens svd->vdev_stat.vs_space = 0; 99699653d4eSeschrock svd->vdev_stat.vs_dspace = 0; 997fa9e4066Sahrens 9983a4b1be9SMatthew Ahrens /* 9993a4b1be9SMatthew Ahrens * State which may be set on a top-level vdev that's in the 10003a4b1be9SMatthew Ahrens * process of being removed. 10013a4b1be9SMatthew Ahrens */ 10023a4b1be9SMatthew Ahrens ASSERT0(tvd->vdev_indirect_config.vic_births_object); 10033a4b1be9SMatthew Ahrens ASSERT0(tvd->vdev_indirect_config.vic_mapping_object); 10043a4b1be9SMatthew Ahrens ASSERT3U(tvd->vdev_indirect_config.vic_prev_indirect_vdev, ==, -1ULL); 10053a4b1be9SMatthew Ahrens ASSERT3P(tvd->vdev_indirect_mapping, ==, NULL); 10063a4b1be9SMatthew Ahrens ASSERT3P(tvd->vdev_indirect_births, ==, NULL); 10073a4b1be9SMatthew Ahrens ASSERT3P(tvd->vdev_obsolete_sm, ==, NULL); 10083a4b1be9SMatthew Ahrens ASSERT0(tvd->vdev_removing); 10093a4b1be9SMatthew Ahrens tvd->vdev_removing = svd->vdev_removing; 10103a4b1be9SMatthew Ahrens tvd->vdev_indirect_config = svd->vdev_indirect_config; 10113a4b1be9SMatthew Ahrens tvd->vdev_indirect_mapping = svd->vdev_indirect_mapping; 10123a4b1be9SMatthew Ahrens tvd->vdev_indirect_births = svd->vdev_indirect_births; 10133a4b1be9SMatthew Ahrens range_tree_swap(&svd->vdev_obsolete_segments, 10143a4b1be9SMatthew Ahrens &tvd->vdev_obsolete_segments); 10153a4b1be9SMatthew Ahrens tvd->vdev_obsolete_sm = svd->vdev_obsolete_sm; 10163a4b1be9SMatthew Ahrens svd->vdev_indirect_config.vic_mapping_object = 0; 10173a4b1be9SMatthew Ahrens svd->vdev_indirect_config.vic_births_object = 0; 10183a4b1be9SMatthew Ahrens svd->vdev_indirect_config.vic_prev_indirect_vdev = -1ULL; 10193a4b1be9SMatthew Ahrens svd->vdev_indirect_mapping = NULL; 10203a4b1be9SMatthew Ahrens svd->vdev_indirect_births = NULL; 10213a4b1be9SMatthew Ahrens svd->vdev_obsolete_sm = NULL; 10223a4b1be9SMatthew Ahrens svd->vdev_removing = 0; 10233a4b1be9SMatthew Ahrens 1024fa9e4066Sahrens for (t = 0; t < TXG_SIZE; t++) { 1025fa9e4066Sahrens while ((msp = txg_list_remove(&svd->vdev_ms_list, t)) != NULL) 1026fa9e4066Sahrens (void) txg_list_add(&tvd->vdev_ms_list, msp, t); 1027fa9e4066Sahrens while ((vd = txg_list_remove(&svd->vdev_dtl_list, t)) != NULL) 1028fa9e4066Sahrens (void) txg_list_add(&tvd->vdev_dtl_list, vd, t); 1029fa9e4066Sahrens if (txg_list_remove_this(&spa->spa_vdev_txg_list, svd, t)) 1030fa9e4066Sahrens (void) txg_list_add(&spa->spa_vdev_txg_list, tvd, t); 1031fa9e4066Sahrens } 1032fa9e4066Sahrens 1033e14bb325SJeff Bonwick if (list_link_active(&svd->vdev_config_dirty_node)) { 1034fa9e4066Sahrens vdev_config_clean(svd); 1035fa9e4066Sahrens vdev_config_dirty(tvd); 1036fa9e4066Sahrens } 1037fa9e4066Sahrens 1038e14bb325SJeff Bonwick if (list_link_active(&svd->vdev_state_dirty_node)) { 1039e14bb325SJeff Bonwick vdev_state_clean(svd); 1040e14bb325SJeff Bonwick vdev_state_dirty(tvd); 1041e14bb325SJeff Bonwick } 1042e14bb325SJeff Bonwick 104399653d4eSeschrock tvd->vdev_deflate_ratio = svd->vdev_deflate_ratio; 104499653d4eSeschrock svd->vdev_deflate_ratio = 0; 10458654d025Sperrin 10468654d025Sperrin tvd->vdev_islog = svd->vdev_islog; 10478654d025Sperrin svd->vdev_islog = 0; 1048a3874b8bSToomas Soome 1049a3874b8bSToomas Soome dsl_scan_io_queue_vdev_xfer(svd, tvd); 1050fa9e4066Sahrens } 1051fa9e4066Sahrens 1052fa9e4066Sahrens static void 1053fa9e4066Sahrens vdev_top_update(vdev_t *tvd, vdev_t *vd) 1054fa9e4066Sahrens { 1055fa9e4066Sahrens if (vd == NULL) 1056fa9e4066Sahrens return; 1057fa9e4066Sahrens 1058fa9e4066Sahrens vd->vdev_top = tvd; 1059fa9e4066Sahrens 1060573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 1061fa9e4066Sahrens vdev_top_update(tvd, vd->vdev_child[c]); 1062fa9e4066Sahrens } 1063fa9e4066Sahrens 1064fa9e4066Sahrens /* 1065fa9e4066Sahrens * Add a mirror/replacing vdev above an existing vdev. 1066fa9e4066Sahrens */ 1067fa9e4066Sahrens vdev_t * 1068fa9e4066Sahrens vdev_add_parent(vdev_t *cvd, vdev_ops_t *ops) 1069fa9e4066Sahrens { 1070fa9e4066Sahrens spa_t *spa = cvd->vdev_spa; 1071fa9e4066Sahrens vdev_t *pvd = cvd->vdev_parent; 1072fa9e4066Sahrens vdev_t *mvd; 1073fa9e4066Sahrens 1074e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL); 1075fa9e4066Sahrens 1076fa9e4066Sahrens mvd = vdev_alloc_common(spa, cvd->vdev_id, 0, ops); 1077ecc2d604Sbonwick 1078ecc2d604Sbonwick mvd->vdev_asize = cvd->vdev_asize; 1079573ca77eSGeorge Wilson mvd->vdev_min_asize = cvd->vdev_min_asize; 10804263d13fSGeorge Wilson mvd->vdev_max_asize = cvd->vdev_max_asize; 10815cabbc6bSPrashanth Sreenivasa mvd->vdev_psize = cvd->vdev_psize; 1082ecc2d604Sbonwick mvd->vdev_ashift = cvd->vdev_ashift; 1083ecc2d604Sbonwick mvd->vdev_state = cvd->vdev_state; 108488ecc943SGeorge Wilson mvd->vdev_crtxg = cvd->vdev_crtxg; 1085ecc2d604Sbonwick 1086fa9e4066Sahrens vdev_remove_child(pvd, cvd); 1087fa9e4066Sahrens vdev_add_child(pvd, mvd); 1088fa9e4066Sahrens cvd->vdev_id = mvd->vdev_children; 1089fa9e4066Sahrens vdev_add_child(mvd, cvd); 1090fa9e4066Sahrens vdev_top_update(cvd->vdev_top, cvd->vdev_top); 1091fa9e4066Sahrens 1092fa9e4066Sahrens if (mvd == mvd->vdev_top) 1093fa9e4066Sahrens vdev_top_transfer(cvd, mvd); 1094fa9e4066Sahrens 1095fa9e4066Sahrens return (mvd); 1096fa9e4066Sahrens } 1097fa9e4066Sahrens 1098fa9e4066Sahrens /* 1099fa9e4066Sahrens * Remove a 1-way mirror/replacing vdev from the tree. 1100fa9e4066Sahrens */ 1101fa9e4066Sahrens void 1102fa9e4066Sahrens vdev_remove_parent(vdev_t *cvd) 1103fa9e4066Sahrens { 1104fa9e4066Sahrens vdev_t *mvd = cvd->vdev_parent; 1105fa9e4066Sahrens vdev_t *pvd = mvd->vdev_parent; 1106fa9e4066Sahrens 1107e14bb325SJeff Bonwick ASSERT(spa_config_held(cvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); 1108fa9e4066Sahrens 1109fa9e4066Sahrens ASSERT(mvd->vdev_children == 1); 1110fa9e4066Sahrens ASSERT(mvd->vdev_ops == &vdev_mirror_ops || 111199653d4eSeschrock mvd->vdev_ops == &vdev_replacing_ops || 111299653d4eSeschrock mvd->vdev_ops == &vdev_spare_ops); 1113ecc2d604Sbonwick cvd->vdev_ashift = mvd->vdev_ashift; 1114fa9e4066Sahrens 1115fa9e4066Sahrens vdev_remove_child(mvd, cvd); 1116fa9e4066Sahrens vdev_remove_child(pvd, mvd); 11178ad4d6ddSJeff Bonwick 111899653d4eSeschrock /* 1119e14bb325SJeff Bonwick * If cvd will replace mvd as a top-level vdev, preserve mvd's guid. 1120e14bb325SJeff Bonwick * Otherwise, we could have detached an offline device, and when we 1121e14bb325SJeff Bonwick * go to import the pool we'll think we have two top-level vdevs, 1122e14bb325SJeff Bonwick * instead of a different version of the same top-level vdev. 112399653d4eSeschrock */ 11248ad4d6ddSJeff Bonwick if (mvd->vdev_top == mvd) { 11258ad4d6ddSJeff Bonwick uint64_t guid_delta = mvd->vdev_guid - cvd->vdev_guid; 11261195e687SMark J Musante cvd->vdev_orig_guid = cvd->vdev_guid; 11278ad4d6ddSJeff Bonwick cvd->vdev_guid += guid_delta; 11288ad4d6ddSJeff Bonwick cvd->vdev_guid_sum += guid_delta; 11298ad4d6ddSJeff Bonwick } 1130e14bb325SJeff Bonwick cvd->vdev_id = mvd->vdev_id; 1131e14bb325SJeff Bonwick vdev_add_child(pvd, cvd); 1132fa9e4066Sahrens vdev_top_update(cvd->vdev_top, cvd->vdev_top); 1133fa9e4066Sahrens 1134fa9e4066Sahrens if (cvd == cvd->vdev_top) 1135fa9e4066Sahrens vdev_top_transfer(mvd, cvd); 1136fa9e4066Sahrens 1137fa9e4066Sahrens ASSERT(mvd->vdev_children == 0); 1138fa9e4066Sahrens vdev_free(mvd); 1139fa9e4066Sahrens } 1140fa9e4066Sahrens 1141663207adSDon Brady static void 1142663207adSDon Brady vdev_metaslab_group_create(vdev_t *vd) 1143663207adSDon Brady { 1144663207adSDon Brady spa_t *spa = vd->vdev_spa; 1145663207adSDon Brady 1146663207adSDon Brady /* 1147663207adSDon Brady * metaslab_group_create was delayed until allocation bias was available 1148663207adSDon Brady */ 1149663207adSDon Brady if (vd->vdev_mg == NULL) { 1150663207adSDon Brady metaslab_class_t *mc; 1151663207adSDon Brady 1152663207adSDon Brady if (vd->vdev_islog && vd->vdev_alloc_bias == VDEV_BIAS_NONE) 1153663207adSDon Brady vd->vdev_alloc_bias = VDEV_BIAS_LOG; 1154663207adSDon Brady 1155663207adSDon Brady ASSERT3U(vd->vdev_islog, ==, 1156663207adSDon Brady (vd->vdev_alloc_bias == VDEV_BIAS_LOG)); 1157663207adSDon Brady 1158663207adSDon Brady switch (vd->vdev_alloc_bias) { 1159663207adSDon Brady case VDEV_BIAS_LOG: 1160663207adSDon Brady mc = spa_log_class(spa); 1161663207adSDon Brady break; 1162663207adSDon Brady case VDEV_BIAS_SPECIAL: 1163663207adSDon Brady mc = spa_special_class(spa); 1164663207adSDon Brady break; 1165663207adSDon Brady case VDEV_BIAS_DEDUP: 1166663207adSDon Brady mc = spa_dedup_class(spa); 1167663207adSDon Brady break; 1168663207adSDon Brady default: 1169663207adSDon Brady mc = spa_normal_class(spa); 1170663207adSDon Brady } 1171663207adSDon Brady 1172663207adSDon Brady vd->vdev_mg = metaslab_group_create(mc, vd, 1173663207adSDon Brady spa->spa_alloc_count); 1174663207adSDon Brady 1175663207adSDon Brady /* 1176663207adSDon Brady * The spa ashift values currently only reflect the 1177663207adSDon Brady * general vdev classes. Class destination is late 1178663207adSDon Brady * binding so ashift checking had to wait until now 1179663207adSDon Brady */ 1180663207adSDon Brady if (vd->vdev_top == vd && vd->vdev_ashift != 0 && 1181663207adSDon Brady mc == spa_normal_class(spa) && vd->vdev_aux == NULL) { 1182663207adSDon Brady if (vd->vdev_ashift > spa->spa_max_ashift) 1183663207adSDon Brady spa->spa_max_ashift = vd->vdev_ashift; 1184663207adSDon Brady if (vd->vdev_ashift < spa->spa_min_ashift) 1185663207adSDon Brady spa->spa_min_ashift = vd->vdev_ashift; 1186663207adSDon Brady } 1187663207adSDon Brady } 1188663207adSDon Brady } 1189663207adSDon Brady 1190ea8dc4b6Seschrock int 1191fa9e4066Sahrens vdev_metaslab_init(vdev_t *vd, uint64_t txg) 1192fa9e4066Sahrens { 1193fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 1194ecc2d604Sbonwick objset_t *mos = spa->spa_meta_objset; 1195ecc2d604Sbonwick uint64_t m; 1196fa9e4066Sahrens uint64_t oldc = vd->vdev_ms_count; 1197fa9e4066Sahrens uint64_t newc = vd->vdev_asize >> vd->vdev_ms_shift; 1198ecc2d604Sbonwick metaslab_t **mspp; 1199ecc2d604Sbonwick int error; 1200663207adSDon Brady boolean_t expanding = (oldc != 0); 1201fa9e4066Sahrens 1202a1521560SJeff Bonwick ASSERT(txg == 0 || spa_config_held(spa, SCL_ALLOC, RW_WRITER)); 1203a1521560SJeff Bonwick 120488ecc943SGeorge Wilson /* 120588ecc943SGeorge Wilson * This vdev is not being allocated from yet or is a hole. 120688ecc943SGeorge Wilson */ 120788ecc943SGeorge Wilson if (vd->vdev_ms_shift == 0) 12080e34b6a7Sbonwick return (0); 12090e34b6a7Sbonwick 121088ecc943SGeorge Wilson ASSERT(!vd->vdev_ishole); 121188ecc943SGeorge Wilson 1212fa9e4066Sahrens ASSERT(oldc <= newc); 1213fa9e4066Sahrens 1214ecc2d604Sbonwick mspp = kmem_zalloc(newc * sizeof (*mspp), KM_SLEEP); 1215fa9e4066Sahrens 1216663207adSDon Brady if (expanding) { 1217ecc2d604Sbonwick bcopy(vd->vdev_ms, mspp, oldc * sizeof (*mspp)); 1218ecc2d604Sbonwick kmem_free(vd->vdev_ms, oldc * sizeof (*mspp)); 1219ecc2d604Sbonwick } 1220fa9e4066Sahrens 1221ecc2d604Sbonwick vd->vdev_ms = mspp; 1222ecc2d604Sbonwick vd->vdev_ms_count = newc; 1223ecc2d604Sbonwick for (m = oldc; m < newc; m++) { 12240713e232SGeorge Wilson uint64_t object = 0; 12250713e232SGeorge Wilson 12265cabbc6bSPrashanth Sreenivasa /* 12275cabbc6bSPrashanth Sreenivasa * vdev_ms_array may be 0 if we are creating the "fake" 12285cabbc6bSPrashanth Sreenivasa * metaslabs for an indirect vdev for zdb's leak detection. 12295cabbc6bSPrashanth Sreenivasa * See zdb_leak_init(). 12305cabbc6bSPrashanth Sreenivasa */ 12315cabbc6bSPrashanth Sreenivasa if (txg == 0 && vd->vdev_ms_array != 0) { 1232ecc2d604Sbonwick error = dmu_read(mos, vd->vdev_ms_array, 12337bfdf011SNeil Perrin m * sizeof (uint64_t), sizeof (uint64_t), &object, 12347bfdf011SNeil Perrin DMU_READ_PREFETCH); 12353ee8c80cSPavel Zakharov if (error != 0) { 12363ee8c80cSPavel Zakharov vdev_dbgmsg(vd, "unable to read the metaslab " 12373ee8c80cSPavel Zakharov "array [error=%d]", error); 1238ecc2d604Sbonwick return (error); 12393ee8c80cSPavel Zakharov } 1240fa9e4066Sahrens } 12411e9bd7ecSPrakash Surya 1242663207adSDon Brady #ifndef _KERNEL 1243663207adSDon Brady /* 1244663207adSDon Brady * To accomodate zdb_leak_init() fake indirect 1245663207adSDon Brady * metaslabs, we allocate a metaslab group for 1246663207adSDon Brady * indirect vdevs which normally don't have one. 1247663207adSDon Brady */ 1248663207adSDon Brady if (vd->vdev_mg == NULL) { 1249663207adSDon Brady ASSERT0(vdev_is_concrete(vd)); 1250663207adSDon Brady vdev_metaslab_group_create(vd); 1251663207adSDon Brady } 1252663207adSDon Brady #endif 12531e9bd7ecSPrakash Surya error = metaslab_init(vd->vdev_mg, m, object, txg, 12541e9bd7ecSPrakash Surya &(vd->vdev_ms[m])); 12553ee8c80cSPavel Zakharov if (error != 0) { 12563ee8c80cSPavel Zakharov vdev_dbgmsg(vd, "metaslab_init failed [error=%d]", 12573ee8c80cSPavel Zakharov error); 12581e9bd7ecSPrakash Surya return (error); 12593ee8c80cSPavel Zakharov } 1260fa9e4066Sahrens } 1261fa9e4066Sahrens 1262a1521560SJeff Bonwick if (txg == 0) 1263a1521560SJeff Bonwick spa_config_enter(spa, SCL_ALLOC, FTAG, RW_WRITER); 1264a1521560SJeff Bonwick 12653f9d6ad7SLin Ling /* 12663f9d6ad7SLin Ling * If the vdev is being removed we don't activate 12673f9d6ad7SLin Ling * the metaslabs since we want to ensure that no new 12683f9d6ad7SLin Ling * allocations are performed on this device. 12693f9d6ad7SLin Ling */ 1270663207adSDon Brady if (!expanding && !vd->vdev_removing) { 1271a1521560SJeff Bonwick metaslab_group_activate(vd->vdev_mg); 1272663207adSDon Brady } 1273a1521560SJeff Bonwick 1274a1521560SJeff Bonwick if (txg == 0) 1275a1521560SJeff Bonwick spa_config_exit(spa, SCL_ALLOC, FTAG); 1276a1521560SJeff Bonwick 1277814dcd43SSerapheim Dimitropoulos /* 1278814dcd43SSerapheim Dimitropoulos * Regardless whether this vdev was just added or it is being 1279814dcd43SSerapheim Dimitropoulos * expanded, the metaslab count has changed. Recalculate the 1280814dcd43SSerapheim Dimitropoulos * block limit. 1281814dcd43SSerapheim Dimitropoulos */ 1282814dcd43SSerapheim Dimitropoulos spa_log_sm_set_blocklimit(spa); 1283814dcd43SSerapheim Dimitropoulos 1284ea8dc4b6Seschrock return (0); 1285fa9e4066Sahrens } 1286fa9e4066Sahrens 1287fa9e4066Sahrens void 1288fa9e4066Sahrens vdev_metaslab_fini(vdev_t *vd) 1289fa9e4066Sahrens { 129086714001SSerapheim Dimitropoulos if (vd->vdev_checkpoint_sm != NULL) { 129186714001SSerapheim Dimitropoulos ASSERT(spa_feature_is_active(vd->vdev_spa, 129286714001SSerapheim Dimitropoulos SPA_FEATURE_POOL_CHECKPOINT)); 129386714001SSerapheim Dimitropoulos space_map_close(vd->vdev_checkpoint_sm); 129486714001SSerapheim Dimitropoulos /* 129586714001SSerapheim Dimitropoulos * Even though we close the space map, we need to set its 129686714001SSerapheim Dimitropoulos * pointer to NULL. The reason is that vdev_metaslab_fini() 129786714001SSerapheim Dimitropoulos * may be called multiple times for certain operations 129886714001SSerapheim Dimitropoulos * (i.e. when destroying a pool) so we need to ensure that 129986714001SSerapheim Dimitropoulos * this clause never executes twice. This logic is similar 130086714001SSerapheim Dimitropoulos * to the one used for the vdev_ms clause below. 130186714001SSerapheim Dimitropoulos */ 130286714001SSerapheim Dimitropoulos vd->vdev_checkpoint_sm = NULL; 130386714001SSerapheim Dimitropoulos } 130486714001SSerapheim Dimitropoulos 1305fa9e4066Sahrens if (vd->vdev_ms != NULL) { 1306555d674dSSerapheim Dimitropoulos metaslab_group_t *mg = vd->vdev_mg; 1307555d674dSSerapheim Dimitropoulos metaslab_group_passivate(mg); 13085cabbc6bSPrashanth Sreenivasa 1309555d674dSSerapheim Dimitropoulos uint64_t count = vd->vdev_ms_count; 13105cabbc6bSPrashanth Sreenivasa for (uint64_t m = 0; m < count; m++) { 13110713e232SGeorge Wilson metaslab_t *msp = vd->vdev_ms[m]; 13120713e232SGeorge Wilson if (msp != NULL) 13130713e232SGeorge Wilson metaslab_fini(msp); 13140713e232SGeorge Wilson } 1315fa9e4066Sahrens kmem_free(vd->vdev_ms, count * sizeof (metaslab_t *)); 1316fa9e4066Sahrens vd->vdev_ms = NULL; 13175cabbc6bSPrashanth Sreenivasa 13185cabbc6bSPrashanth Sreenivasa vd->vdev_ms_count = 0; 1319555d674dSSerapheim Dimitropoulos 1320555d674dSSerapheim Dimitropoulos for (int i = 0; i < RANGE_TREE_HISTOGRAM_SIZE; i++) 1321555d674dSSerapheim Dimitropoulos ASSERT0(mg->mg_histogram[i]); 1322fa9e4066Sahrens } 13235cabbc6bSPrashanth Sreenivasa ASSERT0(vd->vdev_ms_count); 1324fa9e4066Sahrens } 1325fa9e4066Sahrens 1326e14bb325SJeff Bonwick typedef struct vdev_probe_stats { 1327e14bb325SJeff Bonwick boolean_t vps_readable; 1328e14bb325SJeff Bonwick boolean_t vps_writeable; 1329e14bb325SJeff Bonwick int vps_flags; 1330e14bb325SJeff Bonwick } vdev_probe_stats_t; 1331e14bb325SJeff Bonwick 1332e14bb325SJeff Bonwick static void 1333e14bb325SJeff Bonwick vdev_probe_done(zio_t *zio) 13340a4e9518Sgw { 13358ad4d6ddSJeff Bonwick spa_t *spa = zio->io_spa; 1336a3f829aeSBill Moore vdev_t *vd = zio->io_vd; 1337e14bb325SJeff Bonwick vdev_probe_stats_t *vps = zio->io_private; 1338a3f829aeSBill Moore 1339a3f829aeSBill Moore ASSERT(vd->vdev_probe_zio != NULL); 1340e14bb325SJeff Bonwick 1341e14bb325SJeff Bonwick if (zio->io_type == ZIO_TYPE_READ) { 1342e14bb325SJeff Bonwick if (zio->io_error == 0) 1343e14bb325SJeff Bonwick vps->vps_readable = 1; 13448ad4d6ddSJeff Bonwick if (zio->io_error == 0 && spa_writeable(spa)) { 1345a3f829aeSBill Moore zio_nowait(zio_write_phys(vd->vdev_probe_zio, vd, 1346770499e1SDan Kimmel zio->io_offset, zio->io_size, zio->io_abd, 1347e14bb325SJeff Bonwick ZIO_CHECKSUM_OFF, vdev_probe_done, vps, 1348e14bb325SJeff Bonwick ZIO_PRIORITY_SYNC_WRITE, vps->vps_flags, B_TRUE)); 1349e14bb325SJeff Bonwick } else { 1350770499e1SDan Kimmel abd_free(zio->io_abd); 1351e14bb325SJeff Bonwick } 1352e14bb325SJeff Bonwick } else if (zio->io_type == ZIO_TYPE_WRITE) { 1353e14bb325SJeff Bonwick if (zio->io_error == 0) 1354e14bb325SJeff Bonwick vps->vps_writeable = 1; 1355770499e1SDan Kimmel abd_free(zio->io_abd); 1356e14bb325SJeff Bonwick } else if (zio->io_type == ZIO_TYPE_NULL) { 1357a3f829aeSBill Moore zio_t *pio; 1358e14bb325SJeff Bonwick 1359e14bb325SJeff Bonwick vd->vdev_cant_read |= !vps->vps_readable; 1360e14bb325SJeff Bonwick vd->vdev_cant_write |= !vps->vps_writeable; 1361e14bb325SJeff Bonwick 1362e14bb325SJeff Bonwick if (vdev_readable(vd) && 13638ad4d6ddSJeff Bonwick (vdev_writeable(vd) || !spa_writeable(spa))) { 1364e14bb325SJeff Bonwick zio->io_error = 0; 1365e14bb325SJeff Bonwick } else { 1366e14bb325SJeff Bonwick ASSERT(zio->io_error != 0); 13673ee8c80cSPavel Zakharov vdev_dbgmsg(vd, "failed probe"); 13689b088140SToomas Soome (void) zfs_ereport_post(FM_EREPORT_ZFS_PROBE_FAILURE, 1369eb633035STom Caputi spa, vd, NULL, NULL, 0, 0); 1370be6fd75aSMatthew Ahrens zio->io_error = SET_ERROR(ENXIO); 1371e14bb325SJeff Bonwick } 1372a3f829aeSBill Moore 1373a3f829aeSBill Moore mutex_enter(&vd->vdev_probe_lock); 1374a3f829aeSBill Moore ASSERT(vd->vdev_probe_zio == zio); 1375a3f829aeSBill Moore vd->vdev_probe_zio = NULL; 1376a3f829aeSBill Moore mutex_exit(&vd->vdev_probe_lock); 1377a3f829aeSBill Moore 13780f7643c7SGeorge Wilson zio_link_t *zl = NULL; 13790f7643c7SGeorge Wilson while ((pio = zio_walk_parents(zio, &zl)) != NULL) 1380a3f829aeSBill Moore if (!vdev_accessible(vd, pio)) 1381be6fd75aSMatthew Ahrens pio->io_error = SET_ERROR(ENXIO); 1382a3f829aeSBill Moore 1383e14bb325SJeff Bonwick kmem_free(vps, sizeof (*vps)); 1384e14bb325SJeff Bonwick } 1385e14bb325SJeff Bonwick } 13860a4e9518Sgw 1387e14bb325SJeff Bonwick /* 1388f7170741SWill Andrews * Determine whether this device is accessible. 1389f7170741SWill Andrews * 1390f7170741SWill Andrews * Read and write to several known locations: the pad regions of each 1391f7170741SWill Andrews * vdev label but the first, which we leave alone in case it contains 1392f7170741SWill Andrews * a VTOC. 1393e14bb325SJeff Bonwick */ 1394e14bb325SJeff Bonwick zio_t * 1395a3f829aeSBill Moore vdev_probe(vdev_t *vd, zio_t *zio) 1396e14bb325SJeff Bonwick { 1397e14bb325SJeff Bonwick spa_t *spa = vd->vdev_spa; 1398a3f829aeSBill Moore vdev_probe_stats_t *vps = NULL; 1399a3f829aeSBill Moore zio_t *pio; 1400a3f829aeSBill Moore 1401a3f829aeSBill Moore ASSERT(vd->vdev_ops->vdev_op_leaf); 14020a4e9518Sgw 1403a3f829aeSBill Moore /* 1404a3f829aeSBill Moore * Don't probe the probe. 1405a3f829aeSBill Moore */ 1406a3f829aeSBill Moore if (zio && (zio->io_flags & ZIO_FLAG_PROBE)) 1407a3f829aeSBill Moore return (NULL); 1408e14bb325SJeff Bonwick 1409a3f829aeSBill Moore /* 1410a3f829aeSBill Moore * To prevent 'probe storms' when a device fails, we create 1411a3f829aeSBill Moore * just one probe i/o at a time. All zios that want to probe 1412a3f829aeSBill Moore * this vdev will become parents of the probe io. 1413a3f829aeSBill Moore */ 1414a3f829aeSBill Moore mutex_enter(&vd->vdev_probe_lock); 1415e14bb325SJeff Bonwick 1416a3f829aeSBill Moore if ((pio = vd->vdev_probe_zio) == NULL) { 1417a3f829aeSBill Moore vps = kmem_zalloc(sizeof (*vps), KM_SLEEP); 1418a3f829aeSBill Moore 1419a3f829aeSBill Moore vps->vps_flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_PROBE | 1420a3f829aeSBill Moore ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_AGGREGATE | 14218956713aSEric Schrock ZIO_FLAG_TRYHARD; 1422a3f829aeSBill Moore 1423a3f829aeSBill Moore if (spa_config_held(spa, SCL_ZIO, RW_WRITER)) { 1424a3f829aeSBill Moore /* 1425a3f829aeSBill Moore * vdev_cant_read and vdev_cant_write can only 1426a3f829aeSBill Moore * transition from TRUE to FALSE when we have the 1427a3f829aeSBill Moore * SCL_ZIO lock as writer; otherwise they can only 1428a3f829aeSBill Moore * transition from FALSE to TRUE. This ensures that 1429a3f829aeSBill Moore * any zio looking at these values can assume that 1430a3f829aeSBill Moore * failures persist for the life of the I/O. That's 1431a3f829aeSBill Moore * important because when a device has intermittent 1432a3f829aeSBill Moore * connectivity problems, we want to ensure that 1433a3f829aeSBill Moore * they're ascribed to the device (ENXIO) and not 1434a3f829aeSBill Moore * the zio (EIO). 1435a3f829aeSBill Moore * 1436a3f829aeSBill Moore * Since we hold SCL_ZIO as writer here, clear both 1437a3f829aeSBill Moore * values so the probe can reevaluate from first 1438a3f829aeSBill Moore * principles. 1439a3f829aeSBill Moore */ 1440a3f829aeSBill Moore vps->vps_flags |= ZIO_FLAG_CONFIG_WRITER; 1441a3f829aeSBill Moore vd->vdev_cant_read = B_FALSE; 1442a3f829aeSBill Moore vd->vdev_cant_write = B_FALSE; 1443a3f829aeSBill Moore } 1444a3f829aeSBill Moore 1445a3f829aeSBill Moore vd->vdev_probe_zio = pio = zio_null(NULL, spa, vd, 1446a3f829aeSBill Moore vdev_probe_done, vps, 1447a3f829aeSBill Moore vps->vps_flags | ZIO_FLAG_DONT_PROPAGATE); 1448a3f829aeSBill Moore 144998d1cbfeSGeorge Wilson /* 145098d1cbfeSGeorge Wilson * We can't change the vdev state in this context, so we 145198d1cbfeSGeorge Wilson * kick off an async task to do it on our behalf. 145298d1cbfeSGeorge Wilson */ 1453a3f829aeSBill Moore if (zio != NULL) { 1454a3f829aeSBill Moore vd->vdev_probe_wanted = B_TRUE; 1455a3f829aeSBill Moore spa_async_request(spa, SPA_ASYNC_PROBE); 1456a3f829aeSBill Moore } 1457e14bb325SJeff Bonwick } 1458e14bb325SJeff Bonwick 1459a3f829aeSBill Moore if (zio != NULL) 1460a3f829aeSBill Moore zio_add_child(zio, pio); 1461e14bb325SJeff Bonwick 1462a3f829aeSBill Moore mutex_exit(&vd->vdev_probe_lock); 1463e14bb325SJeff Bonwick 1464a3f829aeSBill Moore if (vps == NULL) { 1465a3f829aeSBill Moore ASSERT(zio != NULL); 1466a3f829aeSBill Moore return (NULL); 1467a3f829aeSBill Moore } 1468e14bb325SJeff Bonwick 1469e14bb325SJeff Bonwick for (int l = 1; l < VDEV_LABELS; l++) { 1470a3f829aeSBill Moore zio_nowait(zio_read_phys(pio, vd, 1471e14bb325SJeff Bonwick vdev_label_offset(vd->vdev_psize, l, 1472c4ecba8aSPaul Dagnelie offsetof(vdev_label_t, vl_be)), VDEV_PAD_SIZE, 1473770499e1SDan Kimmel abd_alloc_for_io(VDEV_PAD_SIZE, B_TRUE), 1474e14bb325SJeff Bonwick ZIO_CHECKSUM_OFF, vdev_probe_done, vps, 1475e14bb325SJeff Bonwick ZIO_PRIORITY_SYNC_READ, vps->vps_flags, B_TRUE)); 1476e14bb325SJeff Bonwick } 1477e14bb325SJeff Bonwick 1478a3f829aeSBill Moore if (zio == NULL) 1479a3f829aeSBill Moore return (pio); 1480a3f829aeSBill Moore 1481a3f829aeSBill Moore zio_nowait(pio); 1482a3f829aeSBill Moore return (NULL); 14830a4e9518Sgw } 14840a4e9518Sgw 1485f64c0e34SEric Taylor static void 1486f64c0e34SEric Taylor vdev_open_child(void *arg) 1487f64c0e34SEric Taylor { 1488f64c0e34SEric Taylor vdev_t *vd = arg; 1489f64c0e34SEric Taylor 1490f64c0e34SEric Taylor vd->vdev_open_thread = curthread; 1491f64c0e34SEric Taylor vd->vdev_open_error = vdev_open(vd); 1492f64c0e34SEric Taylor vd->vdev_open_thread = NULL; 1493f64c0e34SEric Taylor } 1494f64c0e34SEric Taylor 1495681d9761SEric Taylor boolean_t 1496681d9761SEric Taylor vdev_uses_zvols(vdev_t *vd) 1497681d9761SEric Taylor { 1498681d9761SEric Taylor if (vd->vdev_path && strncmp(vd->vdev_path, ZVOL_DIR, 1499681d9761SEric Taylor strlen(ZVOL_DIR)) == 0) 1500681d9761SEric Taylor return (B_TRUE); 1501681d9761SEric Taylor for (int c = 0; c < vd->vdev_children; c++) 1502681d9761SEric Taylor if (vdev_uses_zvols(vd->vdev_child[c])) 1503681d9761SEric Taylor return (B_TRUE); 1504681d9761SEric Taylor return (B_FALSE); 1505681d9761SEric Taylor } 1506681d9761SEric Taylor 1507f64c0e34SEric Taylor void 1508f64c0e34SEric Taylor vdev_open_children(vdev_t *vd) 1509f64c0e34SEric Taylor { 1510f64c0e34SEric Taylor taskq_t *tq; 1511f64c0e34SEric Taylor int children = vd->vdev_children; 1512f64c0e34SEric Taylor 1513681d9761SEric Taylor /* 1514681d9761SEric Taylor * in order to handle pools on top of zvols, do the opens 1515681d9761SEric Taylor * in a single thread so that the same thread holds the 1516681d9761SEric Taylor * spa_namespace_lock 1517681d9761SEric Taylor */ 1518681d9761SEric Taylor if (vdev_uses_zvols(vd)) { 151912a8814cSTom Caputi retry_sync: 1520681d9761SEric Taylor for (int c = 0; c < children; c++) 1521681d9761SEric Taylor vd->vdev_child[c]->vdev_open_error = 1522681d9761SEric Taylor vdev_open(vd->vdev_child[c]); 152312a8814cSTom Caputi } else { 152412a8814cSTom Caputi tq = taskq_create("vdev_open", children, minclsyspri, 152512a8814cSTom Caputi children, children, TASKQ_PREPOPULATE); 152612a8814cSTom Caputi if (tq == NULL) 152712a8814cSTom Caputi goto retry_sync; 152812a8814cSTom Caputi 152912a8814cSTom Caputi for (int c = 0; c < children; c++) 153012a8814cSTom Caputi VERIFY(taskq_dispatch(tq, vdev_open_child, 153112a8814cSTom Caputi vd->vdev_child[c], TQ_SLEEP) != TASKQID_INVALID); 153212a8814cSTom Caputi 153312a8814cSTom Caputi taskq_destroy(tq); 1534681d9761SEric Taylor } 1535f64c0e34SEric Taylor 153612a8814cSTom Caputi vd->vdev_nonrot = B_TRUE; 1537f64c0e34SEric Taylor 153812a8814cSTom Caputi for (int c = 0; c < children; c++) 153912a8814cSTom Caputi vd->vdev_nonrot &= vd->vdev_child[c]->vdev_nonrot; 1540f64c0e34SEric Taylor } 1541f64c0e34SEric Taylor 15425cabbc6bSPrashanth Sreenivasa /* 15435cabbc6bSPrashanth Sreenivasa * Compute the raidz-deflation ratio. Note, we hard-code 15445cabbc6bSPrashanth Sreenivasa * in 128k (1 << 17) because it is the "typical" blocksize. 15455cabbc6bSPrashanth Sreenivasa * Even though SPA_MAXBLOCKSIZE changed, this algorithm can not change, 15465cabbc6bSPrashanth Sreenivasa * otherwise it would inconsistently account for existing bp's. 15475cabbc6bSPrashanth Sreenivasa */ 15485cabbc6bSPrashanth Sreenivasa static void 15495cabbc6bSPrashanth Sreenivasa vdev_set_deflate_ratio(vdev_t *vd) 15505cabbc6bSPrashanth Sreenivasa { 15515cabbc6bSPrashanth Sreenivasa if (vd == vd->vdev_top && !vd->vdev_ishole && vd->vdev_ashift != 0) { 15525cabbc6bSPrashanth Sreenivasa vd->vdev_deflate_ratio = (1 << 17) / 15535cabbc6bSPrashanth Sreenivasa (vdev_psize_to_asize(vd, 1 << 17) >> SPA_MINBLOCKSHIFT); 15545cabbc6bSPrashanth Sreenivasa } 15555cabbc6bSPrashanth Sreenivasa } 15565cabbc6bSPrashanth Sreenivasa 1557fa9e4066Sahrens /* 1558fa9e4066Sahrens * Prepare a virtual device for access. 1559fa9e4066Sahrens */ 1560fa9e4066Sahrens int 1561fa9e4066Sahrens vdev_open(vdev_t *vd) 1562fa9e4066Sahrens { 15638ad4d6ddSJeff Bonwick spa_t *spa = vd->vdev_spa; 1564fa9e4066Sahrens int error; 1565fa9e4066Sahrens uint64_t osize = 0; 15664263d13fSGeorge Wilson uint64_t max_osize = 0; 15674263d13fSGeorge Wilson uint64_t asize, max_asize, psize; 1568ecc2d604Sbonwick uint64_t ashift = 0; 1569fa9e4066Sahrens 1570f64c0e34SEric Taylor ASSERT(vd->vdev_open_thread == curthread || 1571f64c0e34SEric Taylor spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 1572fa9e4066Sahrens ASSERT(vd->vdev_state == VDEV_STATE_CLOSED || 1573fa9e4066Sahrens vd->vdev_state == VDEV_STATE_CANT_OPEN || 1574fa9e4066Sahrens vd->vdev_state == VDEV_STATE_OFFLINE); 1575fa9e4066Sahrens 1576fa9e4066Sahrens vd->vdev_stat.vs_aux = VDEV_AUX_NONE; 1577e6ca193dSGeorge Wilson vd->vdev_cant_read = B_FALSE; 1578e6ca193dSGeorge Wilson vd->vdev_cant_write = B_FALSE; 1579573ca77eSGeorge Wilson vd->vdev_min_asize = vdev_get_min_asize(vd); 1580fa9e4066Sahrens 1581069f55e2SEric Schrock /* 1582069f55e2SEric Schrock * If this vdev is not removed, check its fault status. If it's 1583069f55e2SEric Schrock * faulted, bail out of the open. 1584069f55e2SEric Schrock */ 15853d7072f8Seschrock if (!vd->vdev_removed && vd->vdev_faulted) { 15863d7072f8Seschrock ASSERT(vd->vdev_children == 0); 1587069f55e2SEric Schrock ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED || 1588069f55e2SEric Schrock vd->vdev_label_aux == VDEV_AUX_EXTERNAL); 15893d7072f8Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, 1590069f55e2SEric Schrock vd->vdev_label_aux); 1591be6fd75aSMatthew Ahrens return (SET_ERROR(ENXIO)); 15923d7072f8Seschrock } else if (vd->vdev_offline) { 1593fa9e4066Sahrens ASSERT(vd->vdev_children == 0); 1594ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, VDEV_AUX_NONE); 1595be6fd75aSMatthew Ahrens return (SET_ERROR(ENXIO)); 1596fa9e4066Sahrens } 1597fa9e4066Sahrens 15984263d13fSGeorge Wilson error = vd->vdev_ops->vdev_op_open(vd, &osize, &max_osize, &ashift); 1599fa9e4066Sahrens 1600095bcd66SGeorge Wilson /* 1601095bcd66SGeorge Wilson * Reset the vdev_reopening flag so that we actually close 1602095bcd66SGeorge Wilson * the vdev on error. 1603095bcd66SGeorge Wilson */ 1604095bcd66SGeorge Wilson vd->vdev_reopening = B_FALSE; 1605ea8dc4b6Seschrock if (zio_injection_enabled && error == 0) 16068956713aSEric Schrock error = zio_handle_device_injection(vd, NULL, ENXIO); 1607ea8dc4b6Seschrock 1608fa9e4066Sahrens if (error) { 16093d7072f8Seschrock if (vd->vdev_removed && 16103d7072f8Seschrock vd->vdev_stat.vs_aux != VDEV_AUX_OPEN_FAILED) 16113d7072f8Seschrock vd->vdev_removed = B_FALSE; 16123d7072f8Seschrock 16136f793812SPavel Zakharov if (vd->vdev_stat.vs_aux == VDEV_AUX_CHILDREN_OFFLINE) { 16146f793812SPavel Zakharov vdev_set_state(vd, B_TRUE, VDEV_STATE_OFFLINE, 16156f793812SPavel Zakharov vd->vdev_stat.vs_aux); 16166f793812SPavel Zakharov } else { 16176f793812SPavel Zakharov vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 16186f793812SPavel Zakharov vd->vdev_stat.vs_aux); 16196f793812SPavel Zakharov } 1620fa9e4066Sahrens return (error); 1621fa9e4066Sahrens } 1622fa9e4066Sahrens 16233d7072f8Seschrock vd->vdev_removed = B_FALSE; 16243d7072f8Seschrock 1625096d22d4SEric Schrock /* 1626096d22d4SEric Schrock * Recheck the faulted flag now that we have confirmed that 1627096d22d4SEric Schrock * the vdev is accessible. If we're faulted, bail. 1628096d22d4SEric Schrock */ 1629096d22d4SEric Schrock if (vd->vdev_faulted) { 1630096d22d4SEric Schrock ASSERT(vd->vdev_children == 0); 1631096d22d4SEric Schrock ASSERT(vd->vdev_label_aux == VDEV_AUX_ERR_EXCEEDED || 1632096d22d4SEric Schrock vd->vdev_label_aux == VDEV_AUX_EXTERNAL); 1633096d22d4SEric Schrock vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, 1634096d22d4SEric Schrock vd->vdev_label_aux); 1635be6fd75aSMatthew Ahrens return (SET_ERROR(ENXIO)); 1636096d22d4SEric Schrock } 1637096d22d4SEric Schrock 16383d7072f8Seschrock if (vd->vdev_degraded) { 16393d7072f8Seschrock ASSERT(vd->vdev_children == 0); 16403d7072f8Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, 16413d7072f8Seschrock VDEV_AUX_ERR_EXCEEDED); 16423d7072f8Seschrock } else { 1643069f55e2SEric Schrock vdev_set_state(vd, B_TRUE, VDEV_STATE_HEALTHY, 0); 16443d7072f8Seschrock } 1645fa9e4066Sahrens 164688ecc943SGeorge Wilson /* 164788ecc943SGeorge Wilson * For hole or missing vdevs we just return success. 164888ecc943SGeorge Wilson */ 164988ecc943SGeorge Wilson if (vd->vdev_ishole || vd->vdev_ops == &vdev_missing_ops) 165088ecc943SGeorge Wilson return (0); 165188ecc943SGeorge Wilson 1652573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) { 1653ea8dc4b6Seschrock if (vd->vdev_child[c]->vdev_state != VDEV_STATE_HEALTHY) { 1654ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_DEGRADED, 1655ea8dc4b6Seschrock VDEV_AUX_NONE); 1656ea8dc4b6Seschrock break; 1657ea8dc4b6Seschrock } 1658573ca77eSGeorge Wilson } 1659fa9e4066Sahrens 1660fa9e4066Sahrens osize = P2ALIGN(osize, (uint64_t)sizeof (vdev_label_t)); 16614263d13fSGeorge Wilson max_osize = P2ALIGN(max_osize, (uint64_t)sizeof (vdev_label_t)); 1662fa9e4066Sahrens 1663fa9e4066Sahrens if (vd->vdev_children == 0) { 1664fa9e4066Sahrens if (osize < SPA_MINDEVSIZE) { 1665ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1666ea8dc4b6Seschrock VDEV_AUX_TOO_SMALL); 1667be6fd75aSMatthew Ahrens return (SET_ERROR(EOVERFLOW)); 1668fa9e4066Sahrens } 1669fa9e4066Sahrens psize = osize; 1670fa9e4066Sahrens asize = osize - (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE); 16714263d13fSGeorge Wilson max_asize = max_osize - (VDEV_LABEL_START_SIZE + 16724263d13fSGeorge Wilson VDEV_LABEL_END_SIZE); 1673fa9e4066Sahrens } else { 1674ecc2d604Sbonwick if (vd->vdev_parent != NULL && osize < SPA_MINDEVSIZE - 1675fa9e4066Sahrens (VDEV_LABEL_START_SIZE + VDEV_LABEL_END_SIZE)) { 1676ea8dc4b6Seschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1677ea8dc4b6Seschrock VDEV_AUX_TOO_SMALL); 1678be6fd75aSMatthew Ahrens return (SET_ERROR(EOVERFLOW)); 1679fa9e4066Sahrens } 1680fa9e4066Sahrens psize = 0; 1681fa9e4066Sahrens asize = osize; 16824263d13fSGeorge Wilson max_asize = max_osize; 1683fa9e4066Sahrens } 1684fa9e4066Sahrens 1685fa9e4066Sahrens vd->vdev_psize = psize; 1686fa9e4066Sahrens 1687573ca77eSGeorge Wilson /* 1688c040c10cSSteven Hartland * Make sure the allocatable size hasn't shrunk too much. 1689573ca77eSGeorge Wilson */ 1690573ca77eSGeorge Wilson if (asize < vd->vdev_min_asize) { 1691573ca77eSGeorge Wilson vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 1692573ca77eSGeorge Wilson VDEV_AUX_BAD_LABEL); 1693be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 1694573ca77eSGeorge Wilson } 1695573ca77eSGeorge Wilson 1696fa9e4066Sahrens if (vd->vdev_asize == 0) { 1697fa9e4066Sahrens /* 1698fa9e4066Sahrens * This is the first-ever open, so use the computed values. 16995711d393Sloli * For compatibility, a different ashift can be requested. 1700fa9e4066Sahrens */ 1701fa9e4066Sahrens vd->vdev_asize = asize; 17024263d13fSGeorge Wilson vd->vdev_max_asize = max_asize; 17035711d393Sloli if (vd->vdev_ashift == 0) { 17045711d393Sloli vd->vdev_ashift = ashift; /* use detected value */ 17055711d393Sloli } 17065711d393Sloli if (vd->vdev_ashift != 0 && (vd->vdev_ashift < ASHIFT_MIN || 17075711d393Sloli vd->vdev_ashift > ASHIFT_MAX)) { 17085711d393Sloli vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 17095711d393Sloli VDEV_AUX_BAD_ASHIFT); 17105711d393Sloli return (SET_ERROR(EDOM)); 17115711d393Sloli } 1712fa9e4066Sahrens } else { 1713fa9e4066Sahrens /* 17142384d9f8SGeorge Wilson * Detect if the alignment requirement has increased. 17152384d9f8SGeorge Wilson * We don't want to make the pool unavailable, just 17165711d393Sloli * post an event instead. 1717fa9e4066Sahrens */ 17182384d9f8SGeorge Wilson if (ashift > vd->vdev_top->vdev_ashift && 17192384d9f8SGeorge Wilson vd->vdev_ops->vdev_op_leaf) { 17209b088140SToomas Soome (void) zfs_ereport_post( 17219b088140SToomas Soome FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT, 17225711d393Sloli spa, vd, NULL, NULL, 0, 0); 1723fa9e4066Sahrens } 17245711d393Sloli 17254263d13fSGeorge Wilson vd->vdev_max_asize = max_asize; 1726573ca77eSGeorge Wilson } 1727fa9e4066Sahrens 1728573ca77eSGeorge Wilson /* 1729c040c10cSSteven Hartland * If all children are healthy we update asize if either: 1730c040c10cSSteven Hartland * The asize has increased, due to a device expansion caused by dynamic 1731c040c10cSSteven Hartland * LUN growth or vdev replacement, and automatic expansion is enabled; 1732c040c10cSSteven Hartland * making the additional space available. 1733c040c10cSSteven Hartland * 1734c040c10cSSteven Hartland * The asize has decreased, due to a device shrink usually caused by a 1735c040c10cSSteven Hartland * vdev replace with a smaller device. This ensures that calculations 1736c040c10cSSteven Hartland * based of max_asize and asize e.g. esize are always valid. It's safe 1737c040c10cSSteven Hartland * to do this as we've already validated that asize is greater than 1738c040c10cSSteven Hartland * vdev_min_asize. 1739573ca77eSGeorge Wilson */ 1740c040c10cSSteven Hartland if (vd->vdev_state == VDEV_STATE_HEALTHY && 1741c040c10cSSteven Hartland ((asize > vd->vdev_asize && 1742c040c10cSSteven Hartland (vd->vdev_expanding || spa->spa_autoexpand)) || 1743c040c10cSSteven Hartland (asize < vd->vdev_asize))) 1744573ca77eSGeorge Wilson vd->vdev_asize = asize; 1745fa9e4066Sahrens 1746573ca77eSGeorge Wilson vdev_set_min_asize(vd); 1747fa9e4066Sahrens 17480a4e9518Sgw /* 17490a4e9518Sgw * Ensure we can issue some IO before declaring the 17500a4e9518Sgw * vdev open for business. 17510a4e9518Sgw */ 1752e14bb325SJeff Bonwick if (vd->vdev_ops->vdev_op_leaf && 1753e14bb325SJeff Bonwick (error = zio_wait(vdev_probe(vd, NULL))) != 0) { 175498d1cbfeSGeorge Wilson vdev_set_state(vd, B_TRUE, VDEV_STATE_FAULTED, 175598d1cbfeSGeorge Wilson VDEV_AUX_ERR_EXCEEDED); 17560a4e9518Sgw return (error); 17570a4e9518Sgw } 17580a4e9518Sgw 175981cd5c55SMatthew Ahrens /* 176081cd5c55SMatthew Ahrens * Track the min and max ashift values for normal data devices. 1761663207adSDon Brady * 1762663207adSDon Brady * DJB - TBD these should perhaps be tracked per allocation class 1763663207adSDon Brady * (e.g. spa_min_ashift is used to round up post compression buffers) 176481cd5c55SMatthew Ahrens */ 176581cd5c55SMatthew Ahrens if (vd->vdev_top == vd && vd->vdev_ashift != 0 && 1766663207adSDon Brady vd->vdev_alloc_bias == VDEV_BIAS_NONE && 1767663207adSDon Brady vd->vdev_aux == NULL) { 176881cd5c55SMatthew Ahrens if (vd->vdev_ashift > spa->spa_max_ashift) 176981cd5c55SMatthew Ahrens spa->spa_max_ashift = vd->vdev_ashift; 177081cd5c55SMatthew Ahrens if (vd->vdev_ashift < spa->spa_min_ashift) 177181cd5c55SMatthew Ahrens spa->spa_min_ashift = vd->vdev_ashift; 177281cd5c55SMatthew Ahrens } 177381cd5c55SMatthew Ahrens 1774088f3894Sahrens /* 17750c06d385Sjwpoduska * If this is a leaf vdev, assess whether a resilver is needed. 17760c06d385Sjwpoduska * But don't do this if we are doing a reopen for a scrub, since 17770c06d385Sjwpoduska * this would just restart the scrub we are already doing. 1778088f3894Sahrens */ 17790c06d385Sjwpoduska if (vd->vdev_ops->vdev_op_leaf && !spa->spa_scrub_reopen) 17800c06d385Sjwpoduska dsl_scan_assess_vdev(spa->spa_dsl_pool, vd); 1781088f3894Sahrens 1782fa9e4066Sahrens return (0); 1783fa9e4066Sahrens } 1784fa9e4066Sahrens 1785560e6e96Seschrock /* 1786560e6e96Seschrock * Called once the vdevs are all opened, this routine validates the label 17876f793812SPavel Zakharov * contents. This needs to be done before vdev_load() so that we don't 17883d7072f8Seschrock * inadvertently do repair I/Os to the wrong device. 1789560e6e96Seschrock * 1790560e6e96Seschrock * This function will only return failure if one of the vdevs indicates that it 1791560e6e96Seschrock * has since been destroyed or exported. This is only possible if 1792560e6e96Seschrock * /etc/zfs/zpool.cache was readonly at the time. Otherwise, the vdev state 1793560e6e96Seschrock * will be updated but the function will return 0. 1794560e6e96Seschrock */ 1795560e6e96Seschrock int 17966f793812SPavel Zakharov vdev_validate(vdev_t *vd) 1797560e6e96Seschrock { 1798560e6e96Seschrock spa_t *spa = vd->vdev_spa; 1799560e6e96Seschrock nvlist_t *label; 18006f793812SPavel Zakharov uint64_t guid = 0, aux_guid = 0, top_guid; 1801560e6e96Seschrock uint64_t state; 18026f793812SPavel Zakharov nvlist_t *nvl; 18036f793812SPavel Zakharov uint64_t txg; 1804560e6e96Seschrock 18056f793812SPavel Zakharov if (vdev_validate_skip) 18066f793812SPavel Zakharov return (0); 18076f793812SPavel Zakharov 18086f793812SPavel Zakharov for (uint64_t c = 0; c < vd->vdev_children; c++) 18096f793812SPavel Zakharov if (vdev_validate(vd->vdev_child[c]) != 0) 1810be6fd75aSMatthew Ahrens return (SET_ERROR(EBADF)); 1811560e6e96Seschrock 1812b5989ec7Seschrock /* 1813b5989ec7Seschrock * If the device has already failed, or was marked offline, don't do 1814b5989ec7Seschrock * any further validation. Otherwise, label I/O will fail and we will 1815b5989ec7Seschrock * overwrite the previous state. 1816b5989ec7Seschrock */ 18176f793812SPavel Zakharov if (!vd->vdev_ops->vdev_op_leaf || !vdev_readable(vd)) 18186f793812SPavel Zakharov return (0); 1819560e6e96Seschrock 18206f793812SPavel Zakharov /* 18216f793812SPavel Zakharov * If we are performing an extreme rewind, we allow for a label that 18226f793812SPavel Zakharov * was modified at a point after the current txg. 1823d1de72cfSPavel Zakharov * If config lock is not held do not check for the txg. spa_sync could 1824d1de72cfSPavel Zakharov * be updating the vdev's label before updating spa_last_synced_txg. 18256f793812SPavel Zakharov */ 1826d1de72cfSPavel Zakharov if (spa->spa_extreme_rewind || spa_last_synced_txg(spa) == 0 || 1827d1de72cfSPavel Zakharov spa_config_held(spa, SCL_CONFIG, RW_WRITER) != SCL_CONFIG) 18286f793812SPavel Zakharov txg = UINT64_MAX; 18296f793812SPavel Zakharov else 18306f793812SPavel Zakharov txg = spa_last_synced_txg(spa); 1831560e6e96Seschrock 18326f793812SPavel Zakharov if ((label = vdev_label_read_config(vd, txg)) == NULL) { 18336f793812SPavel Zakharov vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 18346f793812SPavel Zakharov VDEV_AUX_BAD_LABEL); 1835b6bf6e15SPavel Zakharov vdev_dbgmsg(vd, "vdev_validate: failed reading config for " 1836b6bf6e15SPavel Zakharov "txg %llu", (u_longlong_t)txg); 18376f793812SPavel Zakharov return (0); 18386f793812SPavel Zakharov } 18391195e687SMark J Musante 18406f793812SPavel Zakharov /* 18416f793812SPavel Zakharov * Determine if this vdev has been split off into another 18426f793812SPavel Zakharov * pool. If so, then refuse to open it. 18436f793812SPavel Zakharov */ 18446f793812SPavel Zakharov if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_SPLIT_GUID, 18456f793812SPavel Zakharov &aux_guid) == 0 && aux_guid == spa_guid(spa)) { 18466f793812SPavel Zakharov vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 18476f793812SPavel Zakharov VDEV_AUX_SPLIT_POOL); 18486f793812SPavel Zakharov nvlist_free(label); 18496f793812SPavel Zakharov vdev_dbgmsg(vd, "vdev_validate: vdev split into other pool"); 18506f793812SPavel Zakharov return (0); 18516f793812SPavel Zakharov } 1852560e6e96Seschrock 18536f793812SPavel Zakharov if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_GUID, &guid) != 0) { 18546f793812SPavel Zakharov vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 18556f793812SPavel Zakharov VDEV_AUX_CORRUPT_DATA); 18566f793812SPavel Zakharov nvlist_free(label); 18576f793812SPavel Zakharov vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", 18586f793812SPavel Zakharov ZPOOL_CONFIG_POOL_GUID); 18596f793812SPavel Zakharov return (0); 18606f793812SPavel Zakharov } 18611195e687SMark J Musante 18626f793812SPavel Zakharov /* 18636f793812SPavel Zakharov * If config is not trusted then ignore the spa guid check. This is 18646f793812SPavel Zakharov * necessary because if the machine crashed during a re-guid the new 18656f793812SPavel Zakharov * guid might have been written to all of the vdev labels, but not the 18666f793812SPavel Zakharov * cached config. The check will be performed again once we have the 18676f793812SPavel Zakharov * trusted config from the MOS. 18686f793812SPavel Zakharov */ 18696f793812SPavel Zakharov if (spa->spa_trust_config && guid != spa_guid(spa)) { 18706f793812SPavel Zakharov vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 18716f793812SPavel Zakharov VDEV_AUX_CORRUPT_DATA); 18726f793812SPavel Zakharov nvlist_free(label); 18736f793812SPavel Zakharov vdev_dbgmsg(vd, "vdev_validate: vdev label pool_guid doesn't " 18746f793812SPavel Zakharov "match config (%llu != %llu)", (u_longlong_t)guid, 18756f793812SPavel Zakharov (u_longlong_t)spa_guid(spa)); 18766f793812SPavel Zakharov return (0); 18776f793812SPavel Zakharov } 18786f793812SPavel Zakharov 18796f793812SPavel Zakharov if (nvlist_lookup_nvlist(label, ZPOOL_CONFIG_VDEV_TREE, &nvl) 18806f793812SPavel Zakharov != 0 || nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_ORIG_GUID, 18816f793812SPavel Zakharov &aux_guid) != 0) 18826f793812SPavel Zakharov aux_guid = 0; 18836f793812SPavel Zakharov 18846f793812SPavel Zakharov if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0) { 18856f793812SPavel Zakharov vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 18866f793812SPavel Zakharov VDEV_AUX_CORRUPT_DATA); 18876f793812SPavel Zakharov nvlist_free(label); 18886f793812SPavel Zakharov vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", 18896f793812SPavel Zakharov ZPOOL_CONFIG_GUID); 18906f793812SPavel Zakharov return (0); 18916f793812SPavel Zakharov } 18926f793812SPavel Zakharov 18936f793812SPavel Zakharov if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_TOP_GUID, &top_guid) 18946f793812SPavel Zakharov != 0) { 18956f793812SPavel Zakharov vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 18966f793812SPavel Zakharov VDEV_AUX_CORRUPT_DATA); 18976f793812SPavel Zakharov nvlist_free(label); 18986f793812SPavel Zakharov vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", 18996f793812SPavel Zakharov ZPOOL_CONFIG_TOP_GUID); 19006f793812SPavel Zakharov return (0); 19016f793812SPavel Zakharov } 19026f793812SPavel Zakharov 19036f793812SPavel Zakharov /* 19046f793812SPavel Zakharov * If this vdev just became a top-level vdev because its sibling was 19056f793812SPavel Zakharov * detached, it will have adopted the parent's vdev guid -- but the 19066f793812SPavel Zakharov * label may or may not be on disk yet. Fortunately, either version 19076f793812SPavel Zakharov * of the label will have the same top guid, so if we're a top-level 19086f793812SPavel Zakharov * vdev, we can safely compare to that instead. 19096f793812SPavel Zakharov * However, if the config comes from a cachefile that failed to update 19106f793812SPavel Zakharov * after the detach, a top-level vdev will appear as a non top-level 19116f793812SPavel Zakharov * vdev in the config. Also relax the constraints if we perform an 19126f793812SPavel Zakharov * extreme rewind. 19136f793812SPavel Zakharov * 19146f793812SPavel Zakharov * If we split this vdev off instead, then we also check the 19156f793812SPavel Zakharov * original pool's guid. We don't want to consider the vdev 19166f793812SPavel Zakharov * corrupt if it is partway through a split operation. 19176f793812SPavel Zakharov */ 19186f793812SPavel Zakharov if (vd->vdev_guid != guid && vd->vdev_guid != aux_guid) { 19196f793812SPavel Zakharov boolean_t mismatch = B_FALSE; 19206f793812SPavel Zakharov if (spa->spa_trust_config && !spa->spa_extreme_rewind) { 19216f793812SPavel Zakharov if (vd != vd->vdev_top || vd->vdev_guid != top_guid) 19226f793812SPavel Zakharov mismatch = B_TRUE; 19236f793812SPavel Zakharov } else { 19246f793812SPavel Zakharov if (vd->vdev_guid != top_guid && 19256f793812SPavel Zakharov vd->vdev_top->vdev_guid != guid) 19266f793812SPavel Zakharov mismatch = B_TRUE; 1927560e6e96Seschrock } 1928560e6e96Seschrock 19296f793812SPavel Zakharov if (mismatch) { 1930560e6e96Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 1931560e6e96Seschrock VDEV_AUX_CORRUPT_DATA); 1932560e6e96Seschrock nvlist_free(label); 19336f793812SPavel Zakharov vdev_dbgmsg(vd, "vdev_validate: config guid " 19346f793812SPavel Zakharov "doesn't match label guid"); 19356f793812SPavel Zakharov vdev_dbgmsg(vd, "CONFIG: guid %llu, top_guid %llu", 19366f793812SPavel Zakharov (u_longlong_t)vd->vdev_guid, 19376f793812SPavel Zakharov (u_longlong_t)vd->vdev_top->vdev_guid); 19386f793812SPavel Zakharov vdev_dbgmsg(vd, "LABEL: guid %llu, top_guid %llu, " 19396f793812SPavel Zakharov "aux_guid %llu", (u_longlong_t)guid, 19406f793812SPavel Zakharov (u_longlong_t)top_guid, (u_longlong_t)aux_guid); 1941560e6e96Seschrock return (0); 1942560e6e96Seschrock } 19436f793812SPavel Zakharov } 1944560e6e96Seschrock 19456f793812SPavel Zakharov if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, 19466f793812SPavel Zakharov &state) != 0) { 19476f793812SPavel Zakharov vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 19486f793812SPavel Zakharov VDEV_AUX_CORRUPT_DATA); 1949560e6e96Seschrock nvlist_free(label); 19506f793812SPavel Zakharov vdev_dbgmsg(vd, "vdev_validate: '%s' missing from label", 19516f793812SPavel Zakharov ZPOOL_CONFIG_POOL_STATE); 19526f793812SPavel Zakharov return (0); 19536f793812SPavel Zakharov } 1954560e6e96Seschrock 19556f793812SPavel Zakharov nvlist_free(label); 19566f793812SPavel Zakharov 19576f793812SPavel Zakharov /* 19586f793812SPavel Zakharov * If this is a verbatim import, no need to check the 19596f793812SPavel Zakharov * state of the pool. 19606f793812SPavel Zakharov */ 19616f793812SPavel Zakharov if (!(spa->spa_import_flags & ZFS_IMPORT_VERBATIM) && 19626f793812SPavel Zakharov spa_load_state(spa) == SPA_LOAD_OPEN && 19636f793812SPavel Zakharov state != POOL_STATE_ACTIVE) { 19646f793812SPavel Zakharov vdev_dbgmsg(vd, "vdev_validate: invalid pool state (%llu) " 19656f793812SPavel Zakharov "for spa %s", (u_longlong_t)state, spa->spa_name); 19666f793812SPavel Zakharov return (SET_ERROR(EBADF)); 19676f793812SPavel Zakharov } 19686f793812SPavel Zakharov 19696f793812SPavel Zakharov /* 19706f793812SPavel Zakharov * If we were able to open and validate a vdev that was 19716f793812SPavel Zakharov * previously marked permanently unavailable, clear that state 19726f793812SPavel Zakharov * now. 19736f793812SPavel Zakharov */ 19746f793812SPavel Zakharov if (vd->vdev_not_present) 19756f793812SPavel Zakharov vd->vdev_not_present = 0; 19766f793812SPavel Zakharov 19776f793812SPavel Zakharov return (0); 19786f793812SPavel Zakharov } 19796f793812SPavel Zakharov 19806f793812SPavel Zakharov static void 19816f793812SPavel Zakharov vdev_copy_path_impl(vdev_t *svd, vdev_t *dvd) 19826f793812SPavel Zakharov { 19836f793812SPavel Zakharov if (svd->vdev_path != NULL && dvd->vdev_path != NULL) { 19846f793812SPavel Zakharov if (strcmp(svd->vdev_path, dvd->vdev_path) != 0) { 19856f793812SPavel Zakharov zfs_dbgmsg("vdev_copy_path: vdev %llu: path changed " 19866f793812SPavel Zakharov "from '%s' to '%s'", (u_longlong_t)dvd->vdev_guid, 19876f793812SPavel Zakharov dvd->vdev_path, svd->vdev_path); 19886f793812SPavel Zakharov spa_strfree(dvd->vdev_path); 19896f793812SPavel Zakharov dvd->vdev_path = spa_strdup(svd->vdev_path); 19903ee8c80cSPavel Zakharov } 19916f793812SPavel Zakharov } else if (svd->vdev_path != NULL) { 19926f793812SPavel Zakharov dvd->vdev_path = spa_strdup(svd->vdev_path); 19936f793812SPavel Zakharov zfs_dbgmsg("vdev_copy_path: vdev %llu: path set to '%s'", 19946f793812SPavel Zakharov (u_longlong_t)dvd->vdev_guid, dvd->vdev_path); 19956f793812SPavel Zakharov } 19966f793812SPavel Zakharov } 1997560e6e96Seschrock 19986f793812SPavel Zakharov /* 19996f793812SPavel Zakharov * Recursively copy vdev paths from one vdev to another. Source and destination 20006f793812SPavel Zakharov * vdev trees must have same geometry otherwise return error. Intended to copy 20016f793812SPavel Zakharov * paths from userland config into MOS config. 20026f793812SPavel Zakharov */ 20036f793812SPavel Zakharov int 20046f793812SPavel Zakharov vdev_copy_path_strict(vdev_t *svd, vdev_t *dvd) 20056f793812SPavel Zakharov { 20066f793812SPavel Zakharov if ((svd->vdev_ops == &vdev_missing_ops) || 20076f793812SPavel Zakharov (svd->vdev_ishole && dvd->vdev_ishole) || 20086f793812SPavel Zakharov (dvd->vdev_ops == &vdev_indirect_ops)) 20096f793812SPavel Zakharov return (0); 20106f793812SPavel Zakharov 20116f793812SPavel Zakharov if (svd->vdev_ops != dvd->vdev_ops) { 20126f793812SPavel Zakharov vdev_dbgmsg(svd, "vdev_copy_path: vdev type mismatch: %s != %s", 20136f793812SPavel Zakharov svd->vdev_ops->vdev_op_type, dvd->vdev_ops->vdev_op_type); 20146f793812SPavel Zakharov return (SET_ERROR(EINVAL)); 20156f793812SPavel Zakharov } 20166f793812SPavel Zakharov 20176f793812SPavel Zakharov if (svd->vdev_guid != dvd->vdev_guid) { 20186f793812SPavel Zakharov vdev_dbgmsg(svd, "vdev_copy_path: guids mismatch (%llu != " 20196f793812SPavel Zakharov "%llu)", (u_longlong_t)svd->vdev_guid, 20206f793812SPavel Zakharov (u_longlong_t)dvd->vdev_guid); 20216f793812SPavel Zakharov return (SET_ERROR(EINVAL)); 20226f793812SPavel Zakharov } 20236f793812SPavel Zakharov 20246f793812SPavel Zakharov if (svd->vdev_children != dvd->vdev_children) { 20256f793812SPavel Zakharov vdev_dbgmsg(svd, "vdev_copy_path: children count mismatch: " 20266f793812SPavel Zakharov "%llu != %llu", (u_longlong_t)svd->vdev_children, 20276f793812SPavel Zakharov (u_longlong_t)dvd->vdev_children); 20286f793812SPavel Zakharov return (SET_ERROR(EINVAL)); 202951ece835Seschrock } 2030560e6e96Seschrock 20316f793812SPavel Zakharov for (uint64_t i = 0; i < svd->vdev_children; i++) { 20326f793812SPavel Zakharov int error = vdev_copy_path_strict(svd->vdev_child[i], 20336f793812SPavel Zakharov dvd->vdev_child[i]); 20346f793812SPavel Zakharov if (error != 0) 20356f793812SPavel Zakharov return (error); 20366f793812SPavel Zakharov } 20376f793812SPavel Zakharov 20386f793812SPavel Zakharov if (svd->vdev_ops->vdev_op_leaf) 20396f793812SPavel Zakharov vdev_copy_path_impl(svd, dvd); 20406f793812SPavel Zakharov 2041560e6e96Seschrock return (0); 2042560e6e96Seschrock } 2043560e6e96Seschrock 20446f793812SPavel Zakharov static void 20456f793812SPavel Zakharov vdev_copy_path_search(vdev_t *stvd, vdev_t *dvd) 20466f793812SPavel Zakharov { 20476f793812SPavel Zakharov ASSERT(stvd->vdev_top == stvd); 20486f793812SPavel Zakharov ASSERT3U(stvd->vdev_id, ==, dvd->vdev_top->vdev_id); 20496f793812SPavel Zakharov 20506f793812SPavel Zakharov for (uint64_t i = 0; i < dvd->vdev_children; i++) { 20516f793812SPavel Zakharov vdev_copy_path_search(stvd, dvd->vdev_child[i]); 20526f793812SPavel Zakharov } 20536f793812SPavel Zakharov 20546f793812SPavel Zakharov if (!dvd->vdev_ops->vdev_op_leaf || !vdev_is_concrete(dvd)) 20556f793812SPavel Zakharov return; 20566f793812SPavel Zakharov 20576f793812SPavel Zakharov /* 20586f793812SPavel Zakharov * The idea here is that while a vdev can shift positions within 20596f793812SPavel Zakharov * a top vdev (when replacing, attaching mirror, etc.) it cannot 20606f793812SPavel Zakharov * step outside of it. 20616f793812SPavel Zakharov */ 20626f793812SPavel Zakharov vdev_t *vd = vdev_lookup_by_guid(stvd, dvd->vdev_guid); 20636f793812SPavel Zakharov 20646f793812SPavel Zakharov if (vd == NULL || vd->vdev_ops != dvd->vdev_ops) 20656f793812SPavel Zakharov return; 20666f793812SPavel Zakharov 20676f793812SPavel Zakharov ASSERT(vd->vdev_ops->vdev_op_leaf); 20686f793812SPavel Zakharov 20696f793812SPavel Zakharov vdev_copy_path_impl(vd, dvd); 20706f793812SPavel Zakharov } 20716f793812SPavel Zakharov 20726f793812SPavel Zakharov /* 20736f793812SPavel Zakharov * Recursively copy vdev paths from one root vdev to another. Source and 20746f793812SPavel Zakharov * destination vdev trees may differ in geometry. For each destination leaf 20756f793812SPavel Zakharov * vdev, search a vdev with the same guid and top vdev id in the source. 20766f793812SPavel Zakharov * Intended to copy paths from userland config into MOS config. 20776f793812SPavel Zakharov */ 20786f793812SPavel Zakharov void 20796f793812SPavel Zakharov vdev_copy_path_relaxed(vdev_t *srvd, vdev_t *drvd) 20806f793812SPavel Zakharov { 20816f793812SPavel Zakharov uint64_t children = MIN(srvd->vdev_children, drvd->vdev_children); 20826f793812SPavel Zakharov ASSERT(srvd->vdev_ops == &vdev_root_ops); 20836f793812SPavel Zakharov ASSERT(drvd->vdev_ops == &vdev_root_ops); 20846f793812SPavel Zakharov 20856f793812SPavel Zakharov for (uint64_t i = 0; i < children; i++) { 20866f793812SPavel Zakharov vdev_copy_path_search(srvd->vdev_child[i], 20876f793812SPavel Zakharov drvd->vdev_child[i]); 20886f793812SPavel Zakharov } 20896f793812SPavel Zakharov } 20906f793812SPavel Zakharov 2091fa9e4066Sahrens /* 2092fa9e4066Sahrens * Close a virtual device. 2093fa9e4066Sahrens */ 2094fa9e4066Sahrens void 2095fa9e4066Sahrens vdev_close(vdev_t *vd) 2096fa9e4066Sahrens { 20978ad4d6ddSJeff Bonwick spa_t *spa = vd->vdev_spa; 2098095bcd66SGeorge Wilson vdev_t *pvd = vd->vdev_parent; 20998ad4d6ddSJeff Bonwick 21008ad4d6ddSJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 21018ad4d6ddSJeff Bonwick 21021195e687SMark J Musante /* 21031195e687SMark J Musante * If our parent is reopening, then we are as well, unless we are 21041195e687SMark J Musante * going offline. 21051195e687SMark J Musante */ 2106095bcd66SGeorge Wilson if (pvd != NULL && pvd->vdev_reopening) 21071195e687SMark J Musante vd->vdev_reopening = (pvd->vdev_reopening && !vd->vdev_offline); 2108095bcd66SGeorge Wilson 2109fa9e4066Sahrens vd->vdev_ops->vdev_op_close(vd); 2110fa9e4066Sahrens 21113d7072f8Seschrock vdev_cache_purge(vd); 2112fa9e4066Sahrens 2113560e6e96Seschrock /* 2114573ca77eSGeorge Wilson * We record the previous state before we close it, so that if we are 2115560e6e96Seschrock * doing a reopen(), we don't generate FMA ereports if we notice that 2116560e6e96Seschrock * it's still faulted. 2117560e6e96Seschrock */ 2118560e6e96Seschrock vd->vdev_prevstate = vd->vdev_state; 2119560e6e96Seschrock 2120fa9e4066Sahrens if (vd->vdev_offline) 2121fa9e4066Sahrens vd->vdev_state = VDEV_STATE_OFFLINE; 2122fa9e4066Sahrens else 2123fa9e4066Sahrens vd->vdev_state = VDEV_STATE_CLOSED; 2124ea8dc4b6Seschrock vd->vdev_stat.vs_aux = VDEV_AUX_NONE; 2125fa9e4066Sahrens } 2126fa9e4066Sahrens 2127dcba9f3fSGeorge Wilson void 2128dcba9f3fSGeorge Wilson vdev_hold(vdev_t *vd) 2129dcba9f3fSGeorge Wilson { 2130dcba9f3fSGeorge Wilson spa_t *spa = vd->vdev_spa; 2131dcba9f3fSGeorge Wilson 2132dcba9f3fSGeorge Wilson ASSERT(spa_is_root(spa)); 2133dcba9f3fSGeorge Wilson if (spa->spa_state == POOL_STATE_UNINITIALIZED) 2134dcba9f3fSGeorge Wilson return; 2135dcba9f3fSGeorge Wilson 2136dcba9f3fSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 2137dcba9f3fSGeorge Wilson vdev_hold(vd->vdev_child[c]); 2138dcba9f3fSGeorge Wilson 2139c65bd187SPatrick Mooney if (vd->vdev_ops->vdev_op_leaf && vd->vdev_ops->vdev_op_hold != NULL) 2140dcba9f3fSGeorge Wilson vd->vdev_ops->vdev_op_hold(vd); 2141dcba9f3fSGeorge Wilson } 2142dcba9f3fSGeorge Wilson 2143dcba9f3fSGeorge Wilson void 2144dcba9f3fSGeorge Wilson vdev_rele(vdev_t *vd) 2145dcba9f3fSGeorge Wilson { 2146dcba9f3fSGeorge Wilson spa_t *spa = vd->vdev_spa; 2147dcba9f3fSGeorge Wilson 2148dcba9f3fSGeorge Wilson ASSERT(spa_is_root(spa)); 2149dcba9f3fSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 2150dcba9f3fSGeorge Wilson vdev_rele(vd->vdev_child[c]); 2151dcba9f3fSGeorge Wilson 2152c65bd187SPatrick Mooney if (vd->vdev_ops->vdev_op_leaf && vd->vdev_ops->vdev_op_rele != NULL) 2153dcba9f3fSGeorge Wilson vd->vdev_ops->vdev_op_rele(vd); 2154dcba9f3fSGeorge Wilson } 2155dcba9f3fSGeorge Wilson 2156095bcd66SGeorge Wilson /* 2157095bcd66SGeorge Wilson * Reopen all interior vdevs and any unopened leaves. We don't actually 2158095bcd66SGeorge Wilson * reopen leaf vdevs which had previously been opened as they might deadlock 2159095bcd66SGeorge Wilson * on the spa_config_lock. Instead we only obtain the leaf's physical size. 2160095bcd66SGeorge Wilson * If the leaf has never been opened then open it, as usual. 2161095bcd66SGeorge Wilson */ 2162fa9e4066Sahrens void 2163ea8dc4b6Seschrock vdev_reopen(vdev_t *vd) 2164fa9e4066Sahrens { 2165ea8dc4b6Seschrock spa_t *spa = vd->vdev_spa; 2166fa9e4066Sahrens 2167e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 2168ea8dc4b6Seschrock 21691195e687SMark J Musante /* set the reopening flag unless we're taking the vdev offline */ 21701195e687SMark J Musante vd->vdev_reopening = !vd->vdev_offline; 2171fa9e4066Sahrens vdev_close(vd); 2172fa9e4066Sahrens (void) vdev_open(vd); 2173fa9e4066Sahrens 217439c23413Seschrock /* 217539c23413Seschrock * Call vdev_validate() here to make sure we have the same device. 217639c23413Seschrock * Otherwise, a device with an invalid label could be successfully 217739c23413Seschrock * opened in response to vdev_reopen(). 217839c23413Seschrock */ 2179c5904d13Seschrock if (vd->vdev_aux) { 2180c5904d13Seschrock (void) vdev_validate_aux(vd); 2181e14bb325SJeff Bonwick if (vdev_readable(vd) && vdev_writeable(vd) && 2182f0a05239SGeorge Amanakis vd->vdev_aux == &spa->spa_l2cache) { 2183f0a05239SGeorge Amanakis /* 2184f0a05239SGeorge Amanakis * When reopening we can assume the device label has 2185f0a05239SGeorge Amanakis * already the attribute l2cache_persistent, since we've 2186f0a05239SGeorge Amanakis * opened the device in the past and updated the label. 2187f0a05239SGeorge Amanakis * In case the vdev is present we should evict all ARC 2188f0a05239SGeorge Amanakis * buffers and pointers to log blocks and reclaim their 2189f0a05239SGeorge Amanakis * space before restoring its contents to L2ARC. 2190f0a05239SGeorge Amanakis */ 2191f0a05239SGeorge Amanakis if (l2arc_vdev_present(vd)) { 2192f0a05239SGeorge Amanakis l2arc_rebuild_vdev(vd, B_TRUE); 2193f0a05239SGeorge Amanakis } else { 2194f0a05239SGeorge Amanakis l2arc_add_vdev(spa, vd); 2195f0a05239SGeorge Amanakis } 2196f0a05239SGeorge Amanakis spa_async_request(spa, SPA_ASYNC_L2CACHE_REBUILD); 2197f0a05239SGeorge Amanakis } 2198c5904d13Seschrock } else { 21996f793812SPavel Zakharov (void) vdev_validate(vd); 2200c5904d13Seschrock } 220139c23413Seschrock 2202fa9e4066Sahrens /* 22033d7072f8Seschrock * Reassess parent vdev's health. 2204fa9e4066Sahrens */ 22053d7072f8Seschrock vdev_propagate_state(vd); 2206fa9e4066Sahrens } 2207fa9e4066Sahrens 2208fa9e4066Sahrens int 220999653d4eSeschrock vdev_create(vdev_t *vd, uint64_t txg, boolean_t isreplacing) 2210fa9e4066Sahrens { 2211fa9e4066Sahrens int error; 2212fa9e4066Sahrens 2213fa9e4066Sahrens /* 2214fa9e4066Sahrens * Normally, partial opens (e.g. of a mirror) are allowed. 2215fa9e4066Sahrens * For a create, however, we want to fail the request if 2216fa9e4066Sahrens * there are any components we can't open. 2217fa9e4066Sahrens */ 2218fa9e4066Sahrens error = vdev_open(vd); 2219fa9e4066Sahrens 2220fa9e4066Sahrens if (error || vd->vdev_state != VDEV_STATE_HEALTHY) { 2221fa9e4066Sahrens vdev_close(vd); 2222fa9e4066Sahrens return (error ? error : ENXIO); 2223fa9e4066Sahrens } 2224fa9e4066Sahrens 2225fa9e4066Sahrens /* 22260713e232SGeorge Wilson * Recursively load DTLs and initialize all labels. 2227fa9e4066Sahrens */ 22280713e232SGeorge Wilson if ((error = vdev_dtl_load(vd)) != 0 || 22290713e232SGeorge Wilson (error = vdev_label_init(vd, txg, isreplacing ? 223039c23413Seschrock VDEV_LABEL_REPLACE : VDEV_LABEL_CREATE)) != 0) { 2231fa9e4066Sahrens vdev_close(vd); 2232fa9e4066Sahrens return (error); 2233fa9e4066Sahrens } 2234fa9e4066Sahrens 2235fa9e4066Sahrens return (0); 2236fa9e4066Sahrens } 2237fa9e4066Sahrens 22380e34b6a7Sbonwick void 2239573ca77eSGeorge Wilson vdev_metaslab_set_size(vdev_t *vd) 2240fa9e4066Sahrens { 224186714001SSerapheim Dimitropoulos uint64_t asize = vd->vdev_asize; 2242a0b03b16SSerapheim Dimitropoulos uint64_t ms_count = asize >> zfs_vdev_default_ms_shift; 2243b4bf0cf0SDon Brady uint64_t ms_shift; 224486714001SSerapheim Dimitropoulos 2245a3874b8bSToomas Soome /* BEGIN CSTYLED */ 2246fa9e4066Sahrens /* 2247b4bf0cf0SDon Brady * There are two dimensions to the metaslab sizing calculation: 2248b4bf0cf0SDon Brady * the size of the metaslab and the count of metaslabs per vdev. 2249b4bf0cf0SDon Brady * 2250a0b03b16SSerapheim Dimitropoulos * The default values used below are a good balance between memory 2251a0b03b16SSerapheim Dimitropoulos * usage (larger metaslab size means more memory needed for loaded 2252a0b03b16SSerapheim Dimitropoulos * metaslabs; more metaslabs means more memory needed for the 2253a0b03b16SSerapheim Dimitropoulos * metaslab_t structs), metaslab load time (larger metaslabs take 2254a0b03b16SSerapheim Dimitropoulos * longer to load), and metaslab sync time (more metaslabs means 2255a0b03b16SSerapheim Dimitropoulos * more time spent syncing all of them). 2256a0b03b16SSerapheim Dimitropoulos * 2257a0b03b16SSerapheim Dimitropoulos * In general, we aim for zfs_vdev_default_ms_count (200) metaslabs. 2258a0b03b16SSerapheim Dimitropoulos * The range of the dimensions are as follows: 2259a0b03b16SSerapheim Dimitropoulos * 2260a0b03b16SSerapheim Dimitropoulos * 2^29 <= ms_size <= 2^34 2261b4bf0cf0SDon Brady * 16 <= ms_count <= 131,072 2262b4bf0cf0SDon Brady * 2263b4bf0cf0SDon Brady * On the lower end of vdev sizes, we aim for metaslabs sizes of 2264b4bf0cf0SDon Brady * at least 512MB (2^29) to minimize fragmentation effects when 2265b4bf0cf0SDon Brady * testing with smaller devices. However, the count constraint 2266b4bf0cf0SDon Brady * of at least 16 metaslabs will override this minimum size goal. 2267b4bf0cf0SDon Brady * 2268b4bf0cf0SDon Brady * On the upper end of vdev sizes, we aim for a maximum metaslab 2269a0b03b16SSerapheim Dimitropoulos * size of 16GB. However, we will cap the total count to 2^17 2270a0b03b16SSerapheim Dimitropoulos * metaslabs to keep our memory footprint in check and let the 2271a0b03b16SSerapheim Dimitropoulos * metaslab size grow from there if that limit is hit. 2272b4bf0cf0SDon Brady * 2273b4bf0cf0SDon Brady * The net effect of applying above constrains is summarized below. 2274b4bf0cf0SDon Brady * 2275663207adSDon Brady * vdev size metaslab count 2276a0b03b16SSerapheim Dimitropoulos * --------------|----------------- 2277663207adSDon Brady * < 8GB ~16 2278663207adSDon Brady * 8GB - 100GB one per 512MB 2279663207adSDon Brady * 100GB - 3TB ~200 2280663207adSDon Brady * 3TB - 2PB one per 16GB 2281663207adSDon Brady * > 2PB ~131,072 2282a0b03b16SSerapheim Dimitropoulos * -------------------------------- 2283a0b03b16SSerapheim Dimitropoulos * 2284a0b03b16SSerapheim Dimitropoulos * Finally, note that all of the above calculate the initial 2285a0b03b16SSerapheim Dimitropoulos * number of metaslabs. Expanding a top-level vdev will result 2286a0b03b16SSerapheim Dimitropoulos * in additional metaslabs being allocated making it possible 2287a0b03b16SSerapheim Dimitropoulos * to exceed the zfs_vdev_ms_count_limit. 2288a0b03b16SSerapheim Dimitropoulos */ 2289a3874b8bSToomas Soome /* END CSTYLED */ 2290a0b03b16SSerapheim Dimitropoulos 2291a0b03b16SSerapheim Dimitropoulos if (ms_count < zfs_vdev_min_ms_count) 2292a0b03b16SSerapheim Dimitropoulos ms_shift = highbit64(asize / zfs_vdev_min_ms_count); 2293a0b03b16SSerapheim Dimitropoulos else if (ms_count > zfs_vdev_default_ms_count) 2294a0b03b16SSerapheim Dimitropoulos ms_shift = highbit64(asize / zfs_vdev_default_ms_count); 2295b4bf0cf0SDon Brady else 2296a0b03b16SSerapheim Dimitropoulos ms_shift = zfs_vdev_default_ms_shift; 2297b4bf0cf0SDon Brady 2298b4bf0cf0SDon Brady if (ms_shift < SPA_MAXBLOCKSHIFT) { 2299b4bf0cf0SDon Brady ms_shift = SPA_MAXBLOCKSHIFT; 2300a0b03b16SSerapheim Dimitropoulos } else if (ms_shift > zfs_vdev_max_ms_shift) { 2301a0b03b16SSerapheim Dimitropoulos ms_shift = zfs_vdev_max_ms_shift; 2302b4bf0cf0SDon Brady /* cap the total count to constrain memory footprint */ 2303a0b03b16SSerapheim Dimitropoulos if ((asize >> ms_shift) > zfs_vdev_ms_count_limit) 2304a0b03b16SSerapheim Dimitropoulos ms_shift = highbit64(asize / zfs_vdev_ms_count_limit); 230586714001SSerapheim Dimitropoulos } 230686714001SSerapheim Dimitropoulos 230786714001SSerapheim Dimitropoulos vd->vdev_ms_shift = ms_shift; 230886714001SSerapheim Dimitropoulos ASSERT3U(vd->vdev_ms_shift, >=, SPA_MAXBLOCKSHIFT); 2309fa9e4066Sahrens } 2310fa9e4066Sahrens 2311fa9e4066Sahrens void 2312ecc2d604Sbonwick vdev_dirty(vdev_t *vd, int flags, void *arg, uint64_t txg) 2313fa9e4066Sahrens { 2314ecc2d604Sbonwick ASSERT(vd == vd->vdev_top); 23155cabbc6bSPrashanth Sreenivasa /* indirect vdevs don't have metaslabs or dtls */ 23165cabbc6bSPrashanth Sreenivasa ASSERT(vdev_is_concrete(vd) || flags == 0); 2317ecc2d604Sbonwick ASSERT(ISP2(flags)); 2318f9af39baSGeorge Wilson ASSERT(spa_writeable(vd->vdev_spa)); 2319fa9e4066Sahrens 2320ecc2d604Sbonwick if (flags & VDD_METASLAB) 2321ecc2d604Sbonwick (void) txg_list_add(&vd->vdev_ms_list, arg, txg); 2322ecc2d604Sbonwick 2323ecc2d604Sbonwick if (flags & VDD_DTL) 2324ecc2d604Sbonwick (void) txg_list_add(&vd->vdev_dtl_list, arg, txg); 2325ecc2d604Sbonwick 2326ecc2d604Sbonwick (void) txg_list_add(&vd->vdev_spa->spa_vdev_txg_list, vd, txg); 2327fa9e4066Sahrens } 2328fa9e4066Sahrens 23290713e232SGeorge Wilson void 23300713e232SGeorge Wilson vdev_dirty_leaves(vdev_t *vd, int flags, uint64_t txg) 23310713e232SGeorge Wilson { 23320713e232SGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 23330713e232SGeorge Wilson vdev_dirty_leaves(vd->vdev_child[c], flags, txg); 23340713e232SGeorge Wilson 23350713e232SGeorge Wilson if (vd->vdev_ops->vdev_op_leaf) 23360713e232SGeorge Wilson vdev_dirty(vd->vdev_top, flags, vd, txg); 23370713e232SGeorge Wilson } 23380713e232SGeorge Wilson 23398ad4d6ddSJeff Bonwick /* 23408ad4d6ddSJeff Bonwick * DTLs. 23418ad4d6ddSJeff Bonwick * 23428ad4d6ddSJeff Bonwick * A vdev's DTL (dirty time log) is the set of transaction groups for which 23439fb35debSEric Taylor * the vdev has less than perfect replication. There are four kinds of DTL: 23448ad4d6ddSJeff Bonwick * 23458ad4d6ddSJeff Bonwick * DTL_MISSING: txgs for which the vdev has no valid copies of the data 23468ad4d6ddSJeff Bonwick * 23478ad4d6ddSJeff Bonwick * DTL_PARTIAL: txgs for which data is available, but not fully replicated 23488ad4d6ddSJeff Bonwick * 23498ad4d6ddSJeff Bonwick * DTL_SCRUB: the txgs that could not be repaired by the last scrub; upon 23508ad4d6ddSJeff Bonwick * scrub completion, DTL_SCRUB replaces DTL_MISSING in the range of 23518ad4d6ddSJeff Bonwick * txgs that was scrubbed. 23528ad4d6ddSJeff Bonwick * 23538ad4d6ddSJeff Bonwick * DTL_OUTAGE: txgs which cannot currently be read, whether due to 23548ad4d6ddSJeff Bonwick * persistent errors or just some device being offline. 23558ad4d6ddSJeff Bonwick * Unlike the other three, the DTL_OUTAGE map is not generally 23568ad4d6ddSJeff Bonwick * maintained; it's only computed when needed, typically to 23578ad4d6ddSJeff Bonwick * determine whether a device can be detached. 23588ad4d6ddSJeff Bonwick * 23598ad4d6ddSJeff Bonwick * For leaf vdevs, DTL_MISSING and DTL_PARTIAL are identical: the device 23608ad4d6ddSJeff Bonwick * either has the data or it doesn't. 23618ad4d6ddSJeff Bonwick * 23628ad4d6ddSJeff Bonwick * For interior vdevs such as mirror and RAID-Z the picture is more complex. 23638ad4d6ddSJeff Bonwick * A vdev's DTL_PARTIAL is the union of its children's DTL_PARTIALs, because 23648ad4d6ddSJeff Bonwick * if any child is less than fully replicated, then so is its parent. 23658ad4d6ddSJeff Bonwick * A vdev's DTL_MISSING is a modified union of its children's DTL_MISSINGs, 23668ad4d6ddSJeff Bonwick * comprising only those txgs which appear in 'maxfaults' or more children; 23678ad4d6ddSJeff Bonwick * those are the txgs we don't have enough replication to read. For example, 23688ad4d6ddSJeff Bonwick * double-parity RAID-Z can tolerate up to two missing devices (maxfaults == 2); 23698ad4d6ddSJeff Bonwick * thus, its DTL_MISSING consists of the set of txgs that appear in more than 23708ad4d6ddSJeff Bonwick * two child DTL_MISSING maps. 23718ad4d6ddSJeff Bonwick * 23728ad4d6ddSJeff Bonwick * It should be clear from the above that to compute the DTLs and outage maps 23738ad4d6ddSJeff Bonwick * for all vdevs, it suffices to know just the leaf vdevs' DTL_MISSING maps. 23748ad4d6ddSJeff Bonwick * Therefore, that is all we keep on disk. When loading the pool, or after 23758ad4d6ddSJeff Bonwick * a configuration change, we generate all other DTLs from first principles. 23768ad4d6ddSJeff Bonwick */ 2377fa9e4066Sahrens void 23788ad4d6ddSJeff Bonwick vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) 2379fa9e4066Sahrens { 23800713e232SGeorge Wilson range_tree_t *rt = vd->vdev_dtl[t]; 23818ad4d6ddSJeff Bonwick 23828ad4d6ddSJeff Bonwick ASSERT(t < DTL_TYPES); 23838ad4d6ddSJeff Bonwick ASSERT(vd != vd->vdev_spa->spa_root_vdev); 2384f9af39baSGeorge Wilson ASSERT(spa_writeable(vd->vdev_spa)); 23858ad4d6ddSJeff Bonwick 23865cabbc6bSPrashanth Sreenivasa mutex_enter(&vd->vdev_dtl_lock); 23870713e232SGeorge Wilson if (!range_tree_contains(rt, txg, size)) 23880713e232SGeorge Wilson range_tree_add(rt, txg, size); 23895cabbc6bSPrashanth Sreenivasa mutex_exit(&vd->vdev_dtl_lock); 2390fa9e4066Sahrens } 2391fa9e4066Sahrens 23928ad4d6ddSJeff Bonwick boolean_t 23938ad4d6ddSJeff Bonwick vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t t, uint64_t txg, uint64_t size) 2394fa9e4066Sahrens { 23950713e232SGeorge Wilson range_tree_t *rt = vd->vdev_dtl[t]; 23968ad4d6ddSJeff Bonwick boolean_t dirty = B_FALSE; 2397fa9e4066Sahrens 23988ad4d6ddSJeff Bonwick ASSERT(t < DTL_TYPES); 23998ad4d6ddSJeff Bonwick ASSERT(vd != vd->vdev_spa->spa_root_vdev); 2400fa9e4066Sahrens 24015cabbc6bSPrashanth Sreenivasa /* 24025cabbc6bSPrashanth Sreenivasa * While we are loading the pool, the DTLs have not been loaded yet. 24035cabbc6bSPrashanth Sreenivasa * Ignore the DTLs and try all devices. This avoids a recursive 24045cabbc6bSPrashanth Sreenivasa * mutex enter on the vdev_dtl_lock, and also makes us try hard 24055cabbc6bSPrashanth Sreenivasa * when loading the pool (relying on the checksum to ensure that 24065cabbc6bSPrashanth Sreenivasa * we get the right data -- note that we while loading, we are 24075cabbc6bSPrashanth Sreenivasa * only reading the MOS, which is always checksummed). 24085cabbc6bSPrashanth Sreenivasa */ 24095cabbc6bSPrashanth Sreenivasa if (vd->vdev_spa->spa_load_state != SPA_LOAD_NONE) 24105cabbc6bSPrashanth Sreenivasa return (B_FALSE); 24115cabbc6bSPrashanth Sreenivasa 24125cabbc6bSPrashanth Sreenivasa mutex_enter(&vd->vdev_dtl_lock); 241386714001SSerapheim Dimitropoulos if (!range_tree_is_empty(rt)) 24140713e232SGeorge Wilson dirty = range_tree_contains(rt, txg, size); 24155cabbc6bSPrashanth Sreenivasa mutex_exit(&vd->vdev_dtl_lock); 2416fa9e4066Sahrens 2417fa9e4066Sahrens return (dirty); 2418fa9e4066Sahrens } 2419fa9e4066Sahrens 24208ad4d6ddSJeff Bonwick boolean_t 24218ad4d6ddSJeff Bonwick vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t t) 24228ad4d6ddSJeff Bonwick { 24230713e232SGeorge Wilson range_tree_t *rt = vd->vdev_dtl[t]; 24248ad4d6ddSJeff Bonwick boolean_t empty; 24258ad4d6ddSJeff Bonwick 24265cabbc6bSPrashanth Sreenivasa mutex_enter(&vd->vdev_dtl_lock); 242786714001SSerapheim Dimitropoulos empty = range_tree_is_empty(rt); 24285cabbc6bSPrashanth Sreenivasa mutex_exit(&vd->vdev_dtl_lock); 24298ad4d6ddSJeff Bonwick 24308ad4d6ddSJeff Bonwick return (empty); 24318ad4d6ddSJeff Bonwick } 24328ad4d6ddSJeff Bonwick 2433a3874b8bSToomas Soome /* 2434a3874b8bSToomas Soome * Returns B_TRUE if vdev determines offset needs to be resilvered. 2435a3874b8bSToomas Soome */ 2436a3874b8bSToomas Soome boolean_t 2437a3874b8bSToomas Soome vdev_dtl_need_resilver(vdev_t *vd, uint64_t offset, size_t psize) 2438a3874b8bSToomas Soome { 2439a3874b8bSToomas Soome ASSERT(vd != vd->vdev_spa->spa_root_vdev); 2440a3874b8bSToomas Soome 2441a3874b8bSToomas Soome if (vd->vdev_ops->vdev_op_need_resilver == NULL || 2442a3874b8bSToomas Soome vd->vdev_ops->vdev_op_leaf) 2443a3874b8bSToomas Soome return (B_TRUE); 2444a3874b8bSToomas Soome 2445a3874b8bSToomas Soome return (vd->vdev_ops->vdev_op_need_resilver(vd, offset, psize)); 2446a3874b8bSToomas Soome } 2447a3874b8bSToomas Soome 2448b4952e17SGeorge Wilson /* 2449b4952e17SGeorge Wilson * Returns the lowest txg in the DTL range. 2450b4952e17SGeorge Wilson */ 2451b4952e17SGeorge Wilson static uint64_t 2452b4952e17SGeorge Wilson vdev_dtl_min(vdev_t *vd) 2453b4952e17SGeorge Wilson { 2454b4952e17SGeorge Wilson ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock)); 24550713e232SGeorge Wilson ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0); 2456b4952e17SGeorge Wilson ASSERT0(vd->vdev_children); 2457b4952e17SGeorge Wilson 24584d7988d6SPaul Dagnelie return (range_tree_min(vd->vdev_dtl[DTL_MISSING]) - 1); 2459b4952e17SGeorge Wilson } 2460b4952e17SGeorge Wilson 2461b4952e17SGeorge Wilson /* 2462b4952e17SGeorge Wilson * Returns the highest txg in the DTL. 2463b4952e17SGeorge Wilson */ 2464b4952e17SGeorge Wilson static uint64_t 2465b4952e17SGeorge Wilson vdev_dtl_max(vdev_t *vd) 2466b4952e17SGeorge Wilson { 2467b4952e17SGeorge Wilson ASSERT(MUTEX_HELD(&vd->vdev_dtl_lock)); 24680713e232SGeorge Wilson ASSERT3U(range_tree_space(vd->vdev_dtl[DTL_MISSING]), !=, 0); 2469b4952e17SGeorge Wilson ASSERT0(vd->vdev_children); 2470b4952e17SGeorge Wilson 24714d7988d6SPaul Dagnelie return (range_tree_max(vd->vdev_dtl[DTL_MISSING])); 2472b4952e17SGeorge Wilson } 2473b4952e17SGeorge Wilson 2474b4952e17SGeorge Wilson /* 2475b4952e17SGeorge Wilson * Determine if a resilvering vdev should remove any DTL entries from 2476b4952e17SGeorge Wilson * its range. If the vdev was resilvering for the entire duration of the 2477b4952e17SGeorge Wilson * scan then it should excise that range from its DTLs. Otherwise, this 2478b4952e17SGeorge Wilson * vdev is considered partially resilvered and should leave its DTL 2479b4952e17SGeorge Wilson * entries intact. The comment in vdev_dtl_reassess() describes how we 2480b4952e17SGeorge Wilson * excise the DTLs. 2481b4952e17SGeorge Wilson */ 2482b4952e17SGeorge Wilson static boolean_t 2483b4952e17SGeorge Wilson vdev_dtl_should_excise(vdev_t *vd) 2484b4952e17SGeorge Wilson { 2485b4952e17SGeorge Wilson spa_t *spa = vd->vdev_spa; 2486b4952e17SGeorge Wilson dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan; 2487b4952e17SGeorge Wilson 2488b4952e17SGeorge Wilson ASSERT0(vd->vdev_children); 2489b4952e17SGeorge Wilson 24902d2f193aSMatthew Ahrens if (vd->vdev_state < VDEV_STATE_DEGRADED) 24912d2f193aSMatthew Ahrens return (B_FALSE); 24922d2f193aSMatthew Ahrens 2493e4c795beSTom Caputi if (vd->vdev_resilver_deferred) 2494e4c795beSTom Caputi return (B_FALSE); 2495e4c795beSTom Caputi 2496b4952e17SGeorge Wilson if (vd->vdev_resilver_txg == 0 || 249786714001SSerapheim Dimitropoulos range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) 2498b4952e17SGeorge Wilson return (B_TRUE); 2499b4952e17SGeorge Wilson 2500b4952e17SGeorge Wilson /* 2501b4952e17SGeorge Wilson * When a resilver is initiated the scan will assign the scn_max_txg 2502b4952e17SGeorge Wilson * value to the highest txg value that exists in all DTLs. If this 2503b4952e17SGeorge Wilson * device's max DTL is not part of this scan (i.e. it is not in 2504b4952e17SGeorge Wilson * the range (scn_min_txg, scn_max_txg] then it is not eligible 2505b4952e17SGeorge Wilson * for excision. 2506b4952e17SGeorge Wilson */ 2507b4952e17SGeorge Wilson if (vdev_dtl_max(vd) <= scn->scn_phys.scn_max_txg) { 2508b4952e17SGeorge Wilson ASSERT3U(scn->scn_phys.scn_min_txg, <=, vdev_dtl_min(vd)); 2509b4952e17SGeorge Wilson ASSERT3U(scn->scn_phys.scn_min_txg, <, vd->vdev_resilver_txg); 2510b4952e17SGeorge Wilson ASSERT3U(vd->vdev_resilver_txg, <=, scn->scn_phys.scn_max_txg); 2511b4952e17SGeorge Wilson return (B_TRUE); 2512b4952e17SGeorge Wilson } 2513b4952e17SGeorge Wilson return (B_FALSE); 2514b4952e17SGeorge Wilson } 2515b4952e17SGeorge Wilson 2516fa9e4066Sahrens /* 2517fa9e4066Sahrens * Reassess DTLs after a config change or scrub completion. 2518fa9e4066Sahrens */ 2519fa9e4066Sahrens void 2520fa9e4066Sahrens vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, int scrub_done) 2521fa9e4066Sahrens { 2522ea8dc4b6Seschrock spa_t *spa = vd->vdev_spa; 25238ad4d6ddSJeff Bonwick avl_tree_t reftree; 25248ad4d6ddSJeff Bonwick int minref; 2525fa9e4066Sahrens 25268ad4d6ddSJeff Bonwick ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0); 2527fa9e4066Sahrens 25288ad4d6ddSJeff Bonwick for (int c = 0; c < vd->vdev_children; c++) 25298ad4d6ddSJeff Bonwick vdev_dtl_reassess(vd->vdev_child[c], txg, 25308ad4d6ddSJeff Bonwick scrub_txg, scrub_done); 25318ad4d6ddSJeff Bonwick 25325cabbc6bSPrashanth Sreenivasa if (vd == spa->spa_root_vdev || !vdev_is_concrete(vd) || vd->vdev_aux) 25338ad4d6ddSJeff Bonwick return; 25348ad4d6ddSJeff Bonwick 25358ad4d6ddSJeff Bonwick if (vd->vdev_ops->vdev_op_leaf) { 25363f9d6ad7SLin Ling dsl_scan_t *scn = spa->spa_dsl_pool->dp_scan; 2537165c5c6fSJohn Poduska boolean_t wasempty = B_TRUE; 25383f9d6ad7SLin Ling 2539fa9e4066Sahrens mutex_enter(&vd->vdev_dtl_lock); 2540b4952e17SGeorge Wilson 2541165c5c6fSJohn Poduska /* 2542165c5c6fSJohn Poduska * If requested, pretend the scan completed cleanly. 2543165c5c6fSJohn Poduska */ 2544165c5c6fSJohn Poduska if (zfs_scan_ignore_errors && scn) 2545165c5c6fSJohn Poduska scn->scn_phys.scn_errors = 0; 2546165c5c6fSJohn Poduska 2547165c5c6fSJohn Poduska if (scrub_txg != 0 && 2548165c5c6fSJohn Poduska !range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) { 2549165c5c6fSJohn Poduska wasempty = B_FALSE; 2550165c5c6fSJohn Poduska zfs_dbgmsg("guid:%llu txg:%llu scrub:%llu started:%d " 2551165c5c6fSJohn Poduska "dtl:%llu/%llu errors:%llu", 2552165c5c6fSJohn Poduska (u_longlong_t)vd->vdev_guid, (u_longlong_t)txg, 2553165c5c6fSJohn Poduska (u_longlong_t)scrub_txg, spa->spa_scrub_started, 2554165c5c6fSJohn Poduska (u_longlong_t)vdev_dtl_min(vd), 2555165c5c6fSJohn Poduska (u_longlong_t)vdev_dtl_max(vd), 2556165c5c6fSJohn Poduska (u_longlong_t)(scn ? scn->scn_phys.scn_errors : 0)); 2557165c5c6fSJohn Poduska } 2558165c5c6fSJohn Poduska 2559b4952e17SGeorge Wilson /* 2560b4952e17SGeorge Wilson * If we've completed a scan cleanly then determine 2561b4952e17SGeorge Wilson * if this vdev should remove any DTLs. We only want to 2562b4952e17SGeorge Wilson * excise regions on vdevs that were available during 2563b4952e17SGeorge Wilson * the entire duration of this scan. 2564b4952e17SGeorge Wilson */ 2565088f3894Sahrens if (scrub_txg != 0 && 25663f9d6ad7SLin Ling (spa->spa_scrub_started || 2567b4952e17SGeorge Wilson (scn != NULL && scn->scn_phys.scn_errors == 0)) && 2568b4952e17SGeorge Wilson vdev_dtl_should_excise(vd)) { 2569088f3894Sahrens /* 2570088f3894Sahrens * We completed a scrub up to scrub_txg. If we 2571088f3894Sahrens * did it without rebooting, then the scrub dtl 2572088f3894Sahrens * will be valid, so excise the old region and 2573088f3894Sahrens * fold in the scrub dtl. Otherwise, leave the 2574088f3894Sahrens * dtl as-is if there was an error. 25758ad4d6ddSJeff Bonwick * 25768ad4d6ddSJeff Bonwick * There's little trick here: to excise the beginning 25778ad4d6ddSJeff Bonwick * of the DTL_MISSING map, we put it into a reference 25788ad4d6ddSJeff Bonwick * tree and then add a segment with refcnt -1 that 25798ad4d6ddSJeff Bonwick * covers the range [0, scrub_txg). This means 25808ad4d6ddSJeff Bonwick * that each txg in that range has refcnt -1 or 0. 25818ad4d6ddSJeff Bonwick * We then add DTL_SCRUB with a refcnt of 2, so that 25828ad4d6ddSJeff Bonwick * entries in the range [0, scrub_txg) will have a 25838ad4d6ddSJeff Bonwick * positive refcnt -- either 1 or 2. We then convert 25848ad4d6ddSJeff Bonwick * the reference tree into the new DTL_MISSING map. 2585088f3894Sahrens */ 25860713e232SGeorge Wilson space_reftree_create(&reftree); 25870713e232SGeorge Wilson space_reftree_add_map(&reftree, 25880713e232SGeorge Wilson vd->vdev_dtl[DTL_MISSING], 1); 25890713e232SGeorge Wilson space_reftree_add_seg(&reftree, 0, scrub_txg, -1); 25900713e232SGeorge Wilson space_reftree_add_map(&reftree, 25910713e232SGeorge Wilson vd->vdev_dtl[DTL_SCRUB], 2); 25920713e232SGeorge Wilson space_reftree_generate_map(&reftree, 25930713e232SGeorge Wilson vd->vdev_dtl[DTL_MISSING], 1); 25940713e232SGeorge Wilson space_reftree_destroy(&reftree); 2595165c5c6fSJohn Poduska 2596165c5c6fSJohn Poduska if (!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING])) { 2597165c5c6fSJohn Poduska zfs_dbgmsg("update DTL_MISSING:%llu/%llu", 2598165c5c6fSJohn Poduska (u_longlong_t)vdev_dtl_min(vd), 2599165c5c6fSJohn Poduska (u_longlong_t)vdev_dtl_max(vd)); 2600165c5c6fSJohn Poduska } else if (!wasempty) { 2601165c5c6fSJohn Poduska zfs_dbgmsg("DTL_MISSING is now empty"); 2602165c5c6fSJohn Poduska } 2603fa9e4066Sahrens } 26040713e232SGeorge Wilson range_tree_vacate(vd->vdev_dtl[DTL_PARTIAL], NULL, NULL); 26050713e232SGeorge Wilson range_tree_walk(vd->vdev_dtl[DTL_MISSING], 26060713e232SGeorge Wilson range_tree_add, vd->vdev_dtl[DTL_PARTIAL]); 2607fa9e4066Sahrens if (scrub_done) 26080713e232SGeorge Wilson range_tree_vacate(vd->vdev_dtl[DTL_SCRUB], NULL, NULL); 26090713e232SGeorge Wilson range_tree_vacate(vd->vdev_dtl[DTL_OUTAGE], NULL, NULL); 26108ad4d6ddSJeff Bonwick if (!vdev_readable(vd)) 26110713e232SGeorge Wilson range_tree_add(vd->vdev_dtl[DTL_OUTAGE], 0, -1ULL); 26128ad4d6ddSJeff Bonwick else 26130713e232SGeorge Wilson range_tree_walk(vd->vdev_dtl[DTL_MISSING], 26140713e232SGeorge Wilson range_tree_add, vd->vdev_dtl[DTL_OUTAGE]); 2615b4952e17SGeorge Wilson 2616b4952e17SGeorge Wilson /* 2617b4952e17SGeorge Wilson * If the vdev was resilvering and no longer has any 2618b4952e17SGeorge Wilson * DTLs then reset its resilvering flag. 2619b4952e17SGeorge Wilson */ 2620b4952e17SGeorge Wilson if (vd->vdev_resilver_txg != 0 && 262186714001SSerapheim Dimitropoulos range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) && 262286714001SSerapheim Dimitropoulos range_tree_is_empty(vd->vdev_dtl[DTL_OUTAGE])) 2623b4952e17SGeorge Wilson vd->vdev_resilver_txg = 0; 2624b4952e17SGeorge Wilson 2625fa9e4066Sahrens mutex_exit(&vd->vdev_dtl_lock); 2626088f3894Sahrens 2627ecc2d604Sbonwick if (txg != 0) 2628ecc2d604Sbonwick vdev_dirty(vd->vdev_top, VDD_DTL, vd, txg); 2629fa9e4066Sahrens return; 2630fa9e4066Sahrens } 2631fa9e4066Sahrens 2632fa9e4066Sahrens mutex_enter(&vd->vdev_dtl_lock); 26338ad4d6ddSJeff Bonwick for (int t = 0; t < DTL_TYPES; t++) { 263499bb17e2SEric Taylor /* account for child's outage in parent's missing map */ 263599bb17e2SEric Taylor int s = (t == DTL_MISSING) ? DTL_OUTAGE: t; 26368ad4d6ddSJeff Bonwick if (t == DTL_SCRUB) 26378ad4d6ddSJeff Bonwick continue; /* leaf vdevs only */ 26388ad4d6ddSJeff Bonwick if (t == DTL_PARTIAL) 26398ad4d6ddSJeff Bonwick minref = 1; /* i.e. non-zero */ 26408ad4d6ddSJeff Bonwick else if (vd->vdev_nparity != 0) 26418ad4d6ddSJeff Bonwick minref = vd->vdev_nparity + 1; /* RAID-Z */ 26428ad4d6ddSJeff Bonwick else 26438ad4d6ddSJeff Bonwick minref = vd->vdev_children; /* any kind of mirror */ 26440713e232SGeorge Wilson space_reftree_create(&reftree); 26458ad4d6ddSJeff Bonwick for (int c = 0; c < vd->vdev_children; c++) { 26468ad4d6ddSJeff Bonwick vdev_t *cvd = vd->vdev_child[c]; 26478ad4d6ddSJeff Bonwick mutex_enter(&cvd->vdev_dtl_lock); 26480713e232SGeorge Wilson space_reftree_add_map(&reftree, cvd->vdev_dtl[s], 1); 26498ad4d6ddSJeff Bonwick mutex_exit(&cvd->vdev_dtl_lock); 26508ad4d6ddSJeff Bonwick } 26510713e232SGeorge Wilson space_reftree_generate_map(&reftree, vd->vdev_dtl[t], minref); 26520713e232SGeorge Wilson space_reftree_destroy(&reftree); 2653fa9e4066Sahrens } 26548ad4d6ddSJeff Bonwick mutex_exit(&vd->vdev_dtl_lock); 2655fa9e4066Sahrens } 2656fa9e4066Sahrens 26570713e232SGeorge Wilson int 2658fa9e4066Sahrens vdev_dtl_load(vdev_t *vd) 2659fa9e4066Sahrens { 2660fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 2661ecc2d604Sbonwick objset_t *mos = spa->spa_meta_objset; 26620713e232SGeorge Wilson int error = 0; 2663fa9e4066Sahrens 26640713e232SGeorge Wilson if (vd->vdev_ops->vdev_op_leaf && vd->vdev_dtl_object != 0) { 26655cabbc6bSPrashanth Sreenivasa ASSERT(vdev_is_concrete(vd)); 2666fa9e4066Sahrens 26670713e232SGeorge Wilson error = space_map_open(&vd->vdev_dtl_sm, mos, 26685cabbc6bSPrashanth Sreenivasa vd->vdev_dtl_object, 0, -1ULL, 0); 26690713e232SGeorge Wilson if (error) 26700713e232SGeorge Wilson return (error); 26710713e232SGeorge Wilson ASSERT(vd->vdev_dtl_sm != NULL); 2672fa9e4066Sahrens 26730713e232SGeorge Wilson mutex_enter(&vd->vdev_dtl_lock); 26740713e232SGeorge Wilson error = space_map_load(vd->vdev_dtl_sm, 26750713e232SGeorge Wilson vd->vdev_dtl[DTL_MISSING], SM_ALLOC); 26760713e232SGeorge Wilson mutex_exit(&vd->vdev_dtl_lock); 2677fa9e4066Sahrens 26780713e232SGeorge Wilson return (error); 26790713e232SGeorge Wilson } 26800713e232SGeorge Wilson 26810713e232SGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) { 26820713e232SGeorge Wilson error = vdev_dtl_load(vd->vdev_child[c]); 26830713e232SGeorge Wilson if (error != 0) 26840713e232SGeorge Wilson break; 26850713e232SGeorge Wilson } 2686fa9e4066Sahrens 2687fa9e4066Sahrens return (error); 2688fa9e4066Sahrens } 2689fa9e4066Sahrens 2690663207adSDon Brady static void 2691663207adSDon Brady vdev_zap_allocation_data(vdev_t *vd, dmu_tx_t *tx) 2692663207adSDon Brady { 2693663207adSDon Brady spa_t *spa = vd->vdev_spa; 2694663207adSDon Brady objset_t *mos = spa->spa_meta_objset; 2695663207adSDon Brady vdev_alloc_bias_t alloc_bias = vd->vdev_alloc_bias; 2696663207adSDon Brady const char *string; 2697663207adSDon Brady 2698663207adSDon Brady ASSERT(alloc_bias != VDEV_BIAS_NONE); 2699663207adSDon Brady 2700663207adSDon Brady string = 2701663207adSDon Brady (alloc_bias == VDEV_BIAS_LOG) ? VDEV_ALLOC_BIAS_LOG : 2702663207adSDon Brady (alloc_bias == VDEV_BIAS_SPECIAL) ? VDEV_ALLOC_BIAS_SPECIAL : 2703663207adSDon Brady (alloc_bias == VDEV_BIAS_DEDUP) ? VDEV_ALLOC_BIAS_DEDUP : NULL; 2704663207adSDon Brady 2705663207adSDon Brady ASSERT(string != NULL); 2706663207adSDon Brady VERIFY0(zap_add(mos, vd->vdev_top_zap, VDEV_TOP_ZAP_ALLOCATION_BIAS, 2707663207adSDon Brady 1, strlen(string) + 1, string, tx)); 2708663207adSDon Brady 2709663207adSDon Brady if (alloc_bias == VDEV_BIAS_SPECIAL || alloc_bias == VDEV_BIAS_DEDUP) { 2710663207adSDon Brady spa_activate_allocation_classes(spa, tx); 2711663207adSDon Brady } 2712663207adSDon Brady } 2713663207adSDon Brady 2714215198a6SJoe Stein void 2715215198a6SJoe Stein vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, dmu_tx_t *tx) 2716215198a6SJoe Stein { 2717215198a6SJoe Stein spa_t *spa = vd->vdev_spa; 2718215198a6SJoe Stein 2719215198a6SJoe Stein VERIFY0(zap_destroy(spa->spa_meta_objset, zapobj, tx)); 2720215198a6SJoe Stein VERIFY0(zap_remove_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps, 2721215198a6SJoe Stein zapobj, tx)); 2722215198a6SJoe Stein } 2723215198a6SJoe Stein 2724215198a6SJoe Stein uint64_t 2725215198a6SJoe Stein vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx) 2726215198a6SJoe Stein { 2727215198a6SJoe Stein spa_t *spa = vd->vdev_spa; 2728215198a6SJoe Stein uint64_t zap = zap_create(spa->spa_meta_objset, DMU_OTN_ZAP_METADATA, 2729215198a6SJoe Stein DMU_OT_NONE, 0, tx); 2730215198a6SJoe Stein 2731215198a6SJoe Stein ASSERT(zap != 0); 2732215198a6SJoe Stein VERIFY0(zap_add_int(spa->spa_meta_objset, spa->spa_all_vdev_zaps, 2733215198a6SJoe Stein zap, tx)); 2734215198a6SJoe Stein 2735215198a6SJoe Stein return (zap); 2736215198a6SJoe Stein } 2737215198a6SJoe Stein 2738215198a6SJoe Stein void 2739215198a6SJoe Stein vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx) 2740215198a6SJoe Stein { 2741215198a6SJoe Stein if (vd->vdev_ops != &vdev_hole_ops && 2742215198a6SJoe Stein vd->vdev_ops != &vdev_missing_ops && 2743215198a6SJoe Stein vd->vdev_ops != &vdev_root_ops && 2744215198a6SJoe Stein !vd->vdev_top->vdev_removing) { 2745215198a6SJoe Stein if (vd->vdev_ops->vdev_op_leaf && vd->vdev_leaf_zap == 0) { 2746215198a6SJoe Stein vd->vdev_leaf_zap = vdev_create_link_zap(vd, tx); 2747215198a6SJoe Stein } 2748215198a6SJoe Stein if (vd == vd->vdev_top && vd->vdev_top_zap == 0) { 2749215198a6SJoe Stein vd->vdev_top_zap = vdev_create_link_zap(vd, tx); 2750663207adSDon Brady if (vd->vdev_alloc_bias != VDEV_BIAS_NONE) 2751663207adSDon Brady vdev_zap_allocation_data(vd, tx); 2752215198a6SJoe Stein } 2753215198a6SJoe Stein } 2754663207adSDon Brady 2755215198a6SJoe Stein for (uint64_t i = 0; i < vd->vdev_children; i++) { 2756215198a6SJoe Stein vdev_construct_zaps(vd->vdev_child[i], tx); 2757215198a6SJoe Stein } 2758215198a6SJoe Stein } 2759215198a6SJoe Stein 2760fa9e4066Sahrens void 2761fa9e4066Sahrens vdev_dtl_sync(vdev_t *vd, uint64_t txg) 2762fa9e4066Sahrens { 2763fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 27640713e232SGeorge Wilson range_tree_t *rt = vd->vdev_dtl[DTL_MISSING]; 2765ecc2d604Sbonwick objset_t *mos = spa->spa_meta_objset; 27660713e232SGeorge Wilson range_tree_t *rtsync; 2767fa9e4066Sahrens dmu_tx_t *tx; 27680713e232SGeorge Wilson uint64_t object = space_map_object(vd->vdev_dtl_sm); 2769fa9e4066Sahrens 27705cabbc6bSPrashanth Sreenivasa ASSERT(vdev_is_concrete(vd)); 27710713e232SGeorge Wilson ASSERT(vd->vdev_ops->vdev_op_leaf); 277288ecc943SGeorge Wilson 2773fa9e4066Sahrens tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); 2774fa9e4066Sahrens 27750713e232SGeorge Wilson if (vd->vdev_detached || vd->vdev_top->vdev_removing) { 27760713e232SGeorge Wilson mutex_enter(&vd->vdev_dtl_lock); 27770713e232SGeorge Wilson space_map_free(vd->vdev_dtl_sm, tx); 27780713e232SGeorge Wilson space_map_close(vd->vdev_dtl_sm); 27790713e232SGeorge Wilson vd->vdev_dtl_sm = NULL; 27800713e232SGeorge Wilson mutex_exit(&vd->vdev_dtl_lock); 2781215198a6SJoe Stein 2782215198a6SJoe Stein /* 2783215198a6SJoe Stein * We only destroy the leaf ZAP for detached leaves or for 2784215198a6SJoe Stein * removed log devices. Removed data devices handle leaf ZAP 2785215198a6SJoe Stein * cleanup later, once cancellation is no longer possible. 2786215198a6SJoe Stein */ 2787215198a6SJoe Stein if (vd->vdev_leaf_zap != 0 && (vd->vdev_detached || 2788215198a6SJoe Stein vd->vdev_top->vdev_islog)) { 2789215198a6SJoe Stein vdev_destroy_unlink_zap(vd, vd->vdev_leaf_zap, tx); 2790215198a6SJoe Stein vd->vdev_leaf_zap = 0; 2791215198a6SJoe Stein } 2792215198a6SJoe Stein 2793fa9e4066Sahrens dmu_tx_commit(tx); 2794fa9e4066Sahrens return; 2795fa9e4066Sahrens } 2796fa9e4066Sahrens 27970713e232SGeorge Wilson if (vd->vdev_dtl_sm == NULL) { 27980713e232SGeorge Wilson uint64_t new_object; 27990713e232SGeorge Wilson 2800814dcd43SSerapheim Dimitropoulos new_object = space_map_alloc(mos, zfs_vdev_dtl_sm_blksz, tx); 28010713e232SGeorge Wilson VERIFY3U(new_object, !=, 0); 28020713e232SGeorge Wilson 28030713e232SGeorge Wilson VERIFY0(space_map_open(&vd->vdev_dtl_sm, mos, new_object, 28045cabbc6bSPrashanth Sreenivasa 0, -1ULL, 0)); 28050713e232SGeorge Wilson ASSERT(vd->vdev_dtl_sm != NULL); 2806fa9e4066Sahrens } 2807fa9e4066Sahrens 28084d7988d6SPaul Dagnelie rtsync = range_tree_create(NULL, RANGE_SEG64, NULL, 0, 0); 2809fa9e4066Sahrens 2810fa9e4066Sahrens mutex_enter(&vd->vdev_dtl_lock); 28110713e232SGeorge Wilson range_tree_walk(rt, range_tree_add, rtsync); 2812fa9e4066Sahrens mutex_exit(&vd->vdev_dtl_lock); 2813fa9e4066Sahrens 2814814dcd43SSerapheim Dimitropoulos space_map_truncate(vd->vdev_dtl_sm, zfs_vdev_dtl_sm_blksz, tx); 281517f11284SSerapheim Dimitropoulos space_map_write(vd->vdev_dtl_sm, rtsync, SM_ALLOC, SM_NO_VDEVID, tx); 28160713e232SGeorge Wilson range_tree_vacate(rtsync, NULL, NULL); 2817fa9e4066Sahrens 28180713e232SGeorge Wilson range_tree_destroy(rtsync); 2819fa9e4066Sahrens 28200713e232SGeorge Wilson /* 28210713e232SGeorge Wilson * If the object for the space map has changed then dirty 28220713e232SGeorge Wilson * the top level so that we update the config. 28230713e232SGeorge Wilson */ 28240713e232SGeorge Wilson if (object != space_map_object(vd->vdev_dtl_sm)) { 28253ee8c80cSPavel Zakharov vdev_dbgmsg(vd, "txg %llu, spa %s, DTL old object %llu, " 28263ee8c80cSPavel Zakharov "new object %llu", (u_longlong_t)txg, spa_name(spa), 28273ee8c80cSPavel Zakharov (u_longlong_t)object, 28283ee8c80cSPavel Zakharov (u_longlong_t)space_map_object(vd->vdev_dtl_sm)); 28290713e232SGeorge Wilson vdev_config_dirty(vd->vdev_top); 28300713e232SGeorge Wilson } 2831fa9e4066Sahrens 2832fa9e4066Sahrens dmu_tx_commit(tx); 2833fa9e4066Sahrens } 2834fa9e4066Sahrens 28358ad4d6ddSJeff Bonwick /* 28368ad4d6ddSJeff Bonwick * Determine whether the specified vdev can be offlined/detached/removed 28378ad4d6ddSJeff Bonwick * without losing data. 28388ad4d6ddSJeff Bonwick */ 28398ad4d6ddSJeff Bonwick boolean_t 28408ad4d6ddSJeff Bonwick vdev_dtl_required(vdev_t *vd) 28418ad4d6ddSJeff Bonwick { 28428ad4d6ddSJeff Bonwick spa_t *spa = vd->vdev_spa; 28438ad4d6ddSJeff Bonwick vdev_t *tvd = vd->vdev_top; 28448ad4d6ddSJeff Bonwick uint8_t cant_read = vd->vdev_cant_read; 28458ad4d6ddSJeff Bonwick boolean_t required; 28468ad4d6ddSJeff Bonwick 28478ad4d6ddSJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 28488ad4d6ddSJeff Bonwick 28498ad4d6ddSJeff Bonwick if (vd == spa->spa_root_vdev || vd == tvd) 28508ad4d6ddSJeff Bonwick return (B_TRUE); 28518ad4d6ddSJeff Bonwick 28528ad4d6ddSJeff Bonwick /* 28538ad4d6ddSJeff Bonwick * Temporarily mark the device as unreadable, and then determine 28548ad4d6ddSJeff Bonwick * whether this results in any DTL outages in the top-level vdev. 28558ad4d6ddSJeff Bonwick * If not, we can safely offline/detach/remove the device. 28568ad4d6ddSJeff Bonwick */ 28578ad4d6ddSJeff Bonwick vd->vdev_cant_read = B_TRUE; 28588ad4d6ddSJeff Bonwick vdev_dtl_reassess(tvd, 0, 0, B_FALSE); 28598ad4d6ddSJeff Bonwick required = !vdev_dtl_empty(tvd, DTL_OUTAGE); 28608ad4d6ddSJeff Bonwick vd->vdev_cant_read = cant_read; 28618ad4d6ddSJeff Bonwick vdev_dtl_reassess(tvd, 0, 0, B_FALSE); 28628ad4d6ddSJeff Bonwick 2863cb04b873SMark J Musante if (!required && zio_injection_enabled) 2864cb04b873SMark J Musante required = !!zio_handle_device_injection(vd, NULL, ECHILD); 2865cb04b873SMark J Musante 28668ad4d6ddSJeff Bonwick return (required); 28678ad4d6ddSJeff Bonwick } 28688ad4d6ddSJeff Bonwick 2869088f3894Sahrens /* 2870088f3894Sahrens * Determine if resilver is needed, and if so the txg range. 2871088f3894Sahrens */ 2872088f3894Sahrens boolean_t 2873088f3894Sahrens vdev_resilver_needed(vdev_t *vd, uint64_t *minp, uint64_t *maxp) 2874088f3894Sahrens { 2875088f3894Sahrens boolean_t needed = B_FALSE; 2876088f3894Sahrens uint64_t thismin = UINT64_MAX; 2877088f3894Sahrens uint64_t thismax = 0; 2878088f3894Sahrens 2879088f3894Sahrens if (vd->vdev_children == 0) { 2880088f3894Sahrens mutex_enter(&vd->vdev_dtl_lock); 288186714001SSerapheim Dimitropoulos if (!range_tree_is_empty(vd->vdev_dtl[DTL_MISSING]) && 28828ad4d6ddSJeff Bonwick vdev_writeable(vd)) { 2883088f3894Sahrens 2884b4952e17SGeorge Wilson thismin = vdev_dtl_min(vd); 2885b4952e17SGeorge Wilson thismax = vdev_dtl_max(vd); 2886088f3894Sahrens needed = B_TRUE; 2887088f3894Sahrens } 2888088f3894Sahrens mutex_exit(&vd->vdev_dtl_lock); 2889088f3894Sahrens } else { 28908ad4d6ddSJeff Bonwick for (int c = 0; c < vd->vdev_children; c++) { 2891088f3894Sahrens vdev_t *cvd = vd->vdev_child[c]; 2892088f3894Sahrens uint64_t cmin, cmax; 2893088f3894Sahrens 2894088f3894Sahrens if (vdev_resilver_needed(cvd, &cmin, &cmax)) { 2895088f3894Sahrens thismin = MIN(thismin, cmin); 2896088f3894Sahrens thismax = MAX(thismax, cmax); 2897088f3894Sahrens needed = B_TRUE; 2898088f3894Sahrens } 2899088f3894Sahrens } 2900088f3894Sahrens } 2901088f3894Sahrens 2902088f3894Sahrens if (needed && minp) { 2903088f3894Sahrens *minp = thismin; 2904088f3894Sahrens *maxp = thismax; 2905088f3894Sahrens } 2906088f3894Sahrens return (needed); 2907088f3894Sahrens } 2908088f3894Sahrens 290986714001SSerapheim Dimitropoulos /* 291086714001SSerapheim Dimitropoulos * Gets the checkpoint space map object from the vdev's ZAP. 291186714001SSerapheim Dimitropoulos * Returns the spacemap object, or 0 if it wasn't in the ZAP 291286714001SSerapheim Dimitropoulos * or the ZAP doesn't exist yet. 291386714001SSerapheim Dimitropoulos */ 291486714001SSerapheim Dimitropoulos int 291586714001SSerapheim Dimitropoulos vdev_checkpoint_sm_object(vdev_t *vd) 291686714001SSerapheim Dimitropoulos { 291786714001SSerapheim Dimitropoulos ASSERT0(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER)); 291886714001SSerapheim Dimitropoulos if (vd->vdev_top_zap == 0) { 291986714001SSerapheim Dimitropoulos return (0); 292086714001SSerapheim Dimitropoulos } 292186714001SSerapheim Dimitropoulos 292286714001SSerapheim Dimitropoulos uint64_t sm_obj = 0; 292386714001SSerapheim Dimitropoulos int err = zap_lookup(spa_meta_objset(vd->vdev_spa), vd->vdev_top_zap, 292486714001SSerapheim Dimitropoulos VDEV_TOP_ZAP_POOL_CHECKPOINT_SM, sizeof (uint64_t), 1, &sm_obj); 292586714001SSerapheim Dimitropoulos 292686714001SSerapheim Dimitropoulos ASSERT(err == 0 || err == ENOENT); 292786714001SSerapheim Dimitropoulos 292886714001SSerapheim Dimitropoulos return (sm_obj); 292986714001SSerapheim Dimitropoulos } 293086714001SSerapheim Dimitropoulos 29315cabbc6bSPrashanth Sreenivasa int 2932ea8dc4b6Seschrock vdev_load(vdev_t *vd) 2933fa9e4066Sahrens { 29345cabbc6bSPrashanth Sreenivasa int error = 0; 2935fa9e4066Sahrens /* 2936fa9e4066Sahrens * Recursively load all children. 2937fa9e4066Sahrens */ 29385cabbc6bSPrashanth Sreenivasa for (int c = 0; c < vd->vdev_children; c++) { 29395cabbc6bSPrashanth Sreenivasa error = vdev_load(vd->vdev_child[c]); 29405cabbc6bSPrashanth Sreenivasa if (error != 0) { 29415cabbc6bSPrashanth Sreenivasa return (error); 29425cabbc6bSPrashanth Sreenivasa } 29435cabbc6bSPrashanth Sreenivasa } 29445cabbc6bSPrashanth Sreenivasa 29455cabbc6bSPrashanth Sreenivasa vdev_set_deflate_ratio(vd); 2946fa9e4066Sahrens 2947663207adSDon Brady /* 2948663207adSDon Brady * On spa_load path, grab the allocation bias from our zap 2949663207adSDon Brady */ 2950663207adSDon Brady if (vd == vd->vdev_top && vd->vdev_top_zap != 0) { 2951663207adSDon Brady spa_t *spa = vd->vdev_spa; 2952663207adSDon Brady char bias_str[64]; 2953663207adSDon Brady 2954663207adSDon Brady if (zap_lookup(spa->spa_meta_objset, vd->vdev_top_zap, 2955663207adSDon Brady VDEV_TOP_ZAP_ALLOCATION_BIAS, 1, sizeof (bias_str), 2956663207adSDon Brady bias_str) == 0) { 2957663207adSDon Brady ASSERT(vd->vdev_alloc_bias == VDEV_BIAS_NONE); 2958663207adSDon Brady vd->vdev_alloc_bias = vdev_derive_alloc_bias(bias_str); 2959663207adSDon Brady } 2960663207adSDon Brady } 2961663207adSDon Brady 2962fa9e4066Sahrens /* 29630e34b6a7Sbonwick * If this is a top-level vdev, initialize its metaslabs. 2964fa9e4066Sahrens */ 29655cabbc6bSPrashanth Sreenivasa if (vd == vd->vdev_top && vdev_is_concrete(vd)) { 2966663207adSDon Brady vdev_metaslab_group_create(vd); 2967663207adSDon Brady 29685cabbc6bSPrashanth Sreenivasa if (vd->vdev_ashift == 0 || vd->vdev_asize == 0) { 29695cabbc6bSPrashanth Sreenivasa vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 29705cabbc6bSPrashanth Sreenivasa VDEV_AUX_CORRUPT_DATA); 29713ee8c80cSPavel Zakharov vdev_dbgmsg(vd, "vdev_load: invalid size. ashift=%llu, " 29723ee8c80cSPavel Zakharov "asize=%llu", (u_longlong_t)vd->vdev_ashift, 29733ee8c80cSPavel Zakharov (u_longlong_t)vd->vdev_asize); 29745cabbc6bSPrashanth Sreenivasa return (SET_ERROR(ENXIO)); 2975555d674dSSerapheim Dimitropoulos } 2976555d674dSSerapheim Dimitropoulos 2977555d674dSSerapheim Dimitropoulos error = vdev_metaslab_init(vd, 0); 2978555d674dSSerapheim Dimitropoulos if (error != 0) { 29793ee8c80cSPavel Zakharov vdev_dbgmsg(vd, "vdev_load: metaslab_init failed " 29803ee8c80cSPavel Zakharov "[error=%d]", error); 29815cabbc6bSPrashanth Sreenivasa vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 29825cabbc6bSPrashanth Sreenivasa VDEV_AUX_CORRUPT_DATA); 29835cabbc6bSPrashanth Sreenivasa return (error); 29845cabbc6bSPrashanth Sreenivasa } 298586714001SSerapheim Dimitropoulos 298686714001SSerapheim Dimitropoulos uint64_t checkpoint_sm_obj = vdev_checkpoint_sm_object(vd); 298786714001SSerapheim Dimitropoulos if (checkpoint_sm_obj != 0) { 298886714001SSerapheim Dimitropoulos objset_t *mos = spa_meta_objset(vd->vdev_spa); 298986714001SSerapheim Dimitropoulos ASSERT(vd->vdev_asize != 0); 299086714001SSerapheim Dimitropoulos ASSERT3P(vd->vdev_checkpoint_sm, ==, NULL); 299186714001SSerapheim Dimitropoulos 2992555d674dSSerapheim Dimitropoulos error = space_map_open(&vd->vdev_checkpoint_sm, 299386714001SSerapheim Dimitropoulos mos, checkpoint_sm_obj, 0, vd->vdev_asize, 2994555d674dSSerapheim Dimitropoulos vd->vdev_ashift); 2995555d674dSSerapheim Dimitropoulos if (error != 0) { 299686714001SSerapheim Dimitropoulos vdev_dbgmsg(vd, "vdev_load: space_map_open " 299786714001SSerapheim Dimitropoulos "failed for checkpoint spacemap (obj %llu) " 299886714001SSerapheim Dimitropoulos "[error=%d]", 299986714001SSerapheim Dimitropoulos (u_longlong_t)checkpoint_sm_obj, error); 300086714001SSerapheim Dimitropoulos return (error); 300186714001SSerapheim Dimitropoulos } 300286714001SSerapheim Dimitropoulos ASSERT3P(vd->vdev_checkpoint_sm, !=, NULL); 300386714001SSerapheim Dimitropoulos 300486714001SSerapheim Dimitropoulos /* 300586714001SSerapheim Dimitropoulos * Since the checkpoint_sm contains free entries 3006555d674dSSerapheim Dimitropoulos * exclusively we can use space_map_allocated() to 3007555d674dSSerapheim Dimitropoulos * indicate the cumulative checkpointed space that 3008555d674dSSerapheim Dimitropoulos * has been freed. 300986714001SSerapheim Dimitropoulos */ 301086714001SSerapheim Dimitropoulos vd->vdev_stat.vs_checkpoint_space = 3011555d674dSSerapheim Dimitropoulos -space_map_allocated(vd->vdev_checkpoint_sm); 301286714001SSerapheim Dimitropoulos vd->vdev_spa->spa_checkpoint_info.sci_dspace += 301386714001SSerapheim Dimitropoulos vd->vdev_stat.vs_checkpoint_space; 301486714001SSerapheim Dimitropoulos } 30155cabbc6bSPrashanth Sreenivasa } 3016fa9e4066Sahrens 3017fa9e4066Sahrens /* 3018fa9e4066Sahrens * If this is a leaf vdev, load its DTL. 3019fa9e4066Sahrens */ 30205cabbc6bSPrashanth Sreenivasa if (vd->vdev_ops->vdev_op_leaf && (error = vdev_dtl_load(vd)) != 0) { 3021560e6e96Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 3022560e6e96Seschrock VDEV_AUX_CORRUPT_DATA); 30233ee8c80cSPavel Zakharov vdev_dbgmsg(vd, "vdev_load: vdev_dtl_load failed " 30243ee8c80cSPavel Zakharov "[error=%d]", error); 30255cabbc6bSPrashanth Sreenivasa return (error); 30265cabbc6bSPrashanth Sreenivasa } 30275cabbc6bSPrashanth Sreenivasa 30285cabbc6bSPrashanth Sreenivasa uint64_t obsolete_sm_object = vdev_obsolete_sm_object(vd); 30295cabbc6bSPrashanth Sreenivasa if (obsolete_sm_object != 0) { 30305cabbc6bSPrashanth Sreenivasa objset_t *mos = vd->vdev_spa->spa_meta_objset; 30315cabbc6bSPrashanth Sreenivasa ASSERT(vd->vdev_asize != 0); 303286714001SSerapheim Dimitropoulos ASSERT3P(vd->vdev_obsolete_sm, ==, NULL); 30335cabbc6bSPrashanth Sreenivasa 30345cabbc6bSPrashanth Sreenivasa if ((error = space_map_open(&vd->vdev_obsolete_sm, mos, 30355cabbc6bSPrashanth Sreenivasa obsolete_sm_object, 0, vd->vdev_asize, 0))) { 30365cabbc6bSPrashanth Sreenivasa vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 30375cabbc6bSPrashanth Sreenivasa VDEV_AUX_CORRUPT_DATA); 30383ee8c80cSPavel Zakharov vdev_dbgmsg(vd, "vdev_load: space_map_open failed for " 30393ee8c80cSPavel Zakharov "obsolete spacemap (obj %llu) [error=%d]", 30403ee8c80cSPavel Zakharov (u_longlong_t)obsolete_sm_object, error); 30415cabbc6bSPrashanth Sreenivasa return (error); 30425cabbc6bSPrashanth Sreenivasa } 30435cabbc6bSPrashanth Sreenivasa } 30445cabbc6bSPrashanth Sreenivasa 30455cabbc6bSPrashanth Sreenivasa return (0); 3046fa9e4066Sahrens } 3047fa9e4066Sahrens 304899653d4eSeschrock /* 3049fa94a07fSbrendan * The special vdev case is used for hot spares and l2cache devices. Its 3050fa94a07fSbrendan * sole purpose it to set the vdev state for the associated vdev. To do this, 3051fa94a07fSbrendan * we make sure that we can open the underlying device, then try to read the 3052fa94a07fSbrendan * label, and make sure that the label is sane and that it hasn't been 3053fa94a07fSbrendan * repurposed to another pool. 305499653d4eSeschrock */ 305599653d4eSeschrock int 3056fa94a07fSbrendan vdev_validate_aux(vdev_t *vd) 305799653d4eSeschrock { 305899653d4eSeschrock nvlist_t *label; 305999653d4eSeschrock uint64_t guid, version; 306099653d4eSeschrock uint64_t state; 306199653d4eSeschrock 3062e14bb325SJeff Bonwick if (!vdev_readable(vd)) 3063c5904d13Seschrock return (0); 3064c5904d13Seschrock 3065dfbb9432SGeorge Wilson if ((label = vdev_label_read_config(vd, -1ULL)) == NULL) { 306699653d4eSeschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 306799653d4eSeschrock VDEV_AUX_CORRUPT_DATA); 306899653d4eSeschrock return (-1); 306999653d4eSeschrock } 307099653d4eSeschrock 307199653d4eSeschrock if (nvlist_lookup_uint64(label, ZPOOL_CONFIG_VERSION, &version) != 0 || 3072ad135b5dSChristopher Siden !SPA_VERSION_IS_SUPPORTED(version) || 307399653d4eSeschrock nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) != 0 || 307499653d4eSeschrock guid != vd->vdev_guid || 307599653d4eSeschrock nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_STATE, &state) != 0) { 307699653d4eSeschrock vdev_set_state(vd, B_TRUE, VDEV_STATE_CANT_OPEN, 307799653d4eSeschrock VDEV_AUX_CORRUPT_DATA); 307899653d4eSeschrock nvlist_free(label); 307999653d4eSeschrock return (-1); 308099653d4eSeschrock } 308199653d4eSeschrock 308299653d4eSeschrock /* 308399653d4eSeschrock * We don't actually check the pool state here. If it's in fact in 308499653d4eSeschrock * use by another pool, we update this fact on the fly when requested. 308599653d4eSeschrock */ 308699653d4eSeschrock nvlist_free(label); 308799653d4eSeschrock return (0); 308899653d4eSeschrock } 308999653d4eSeschrock 3090814dcd43SSerapheim Dimitropoulos static void 3091814dcd43SSerapheim Dimitropoulos vdev_destroy_ms_flush_data(vdev_t *vd, dmu_tx_t *tx) 3092814dcd43SSerapheim Dimitropoulos { 3093814dcd43SSerapheim Dimitropoulos objset_t *mos = spa_meta_objset(vd->vdev_spa); 3094814dcd43SSerapheim Dimitropoulos 3095814dcd43SSerapheim Dimitropoulos if (vd->vdev_top_zap == 0) 3096814dcd43SSerapheim Dimitropoulos return; 3097814dcd43SSerapheim Dimitropoulos 3098814dcd43SSerapheim Dimitropoulos uint64_t object = 0; 3099814dcd43SSerapheim Dimitropoulos int err = zap_lookup(mos, vd->vdev_top_zap, 3100814dcd43SSerapheim Dimitropoulos VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, sizeof (uint64_t), 1, &object); 3101814dcd43SSerapheim Dimitropoulos if (err == ENOENT) 3102814dcd43SSerapheim Dimitropoulos return; 3103814dcd43SSerapheim Dimitropoulos 3104814dcd43SSerapheim Dimitropoulos VERIFY0(dmu_object_free(mos, object, tx)); 3105814dcd43SSerapheim Dimitropoulos VERIFY0(zap_remove(mos, vd->vdev_top_zap, 3106814dcd43SSerapheim Dimitropoulos VDEV_TOP_ZAP_MS_UNFLUSHED_PHYS_TXGS, tx)); 3107814dcd43SSerapheim Dimitropoulos } 3108814dcd43SSerapheim Dimitropoulos 31095cabbc6bSPrashanth Sreenivasa /* 31105cabbc6bSPrashanth Sreenivasa * Free the objects used to store this vdev's spacemaps, and the array 31115cabbc6bSPrashanth Sreenivasa * that points to them. 31125cabbc6bSPrashanth Sreenivasa */ 311388ecc943SGeorge Wilson void 31145cabbc6bSPrashanth Sreenivasa vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx) 31155cabbc6bSPrashanth Sreenivasa { 31165cabbc6bSPrashanth Sreenivasa if (vd->vdev_ms_array == 0) 31175cabbc6bSPrashanth Sreenivasa return; 31185cabbc6bSPrashanth Sreenivasa 31195cabbc6bSPrashanth Sreenivasa objset_t *mos = vd->vdev_spa->spa_meta_objset; 31205cabbc6bSPrashanth Sreenivasa uint64_t array_count = vd->vdev_asize >> vd->vdev_ms_shift; 31215cabbc6bSPrashanth Sreenivasa size_t array_bytes = array_count * sizeof (uint64_t); 31225cabbc6bSPrashanth Sreenivasa uint64_t *smobj_array = kmem_alloc(array_bytes, KM_SLEEP); 31235cabbc6bSPrashanth Sreenivasa VERIFY0(dmu_read(mos, vd->vdev_ms_array, 0, 31245cabbc6bSPrashanth Sreenivasa array_bytes, smobj_array, 0)); 31255cabbc6bSPrashanth Sreenivasa 31265cabbc6bSPrashanth Sreenivasa for (uint64_t i = 0; i < array_count; i++) { 31275cabbc6bSPrashanth Sreenivasa uint64_t smobj = smobj_array[i]; 31285cabbc6bSPrashanth Sreenivasa if (smobj == 0) 31295cabbc6bSPrashanth Sreenivasa continue; 31305cabbc6bSPrashanth Sreenivasa 31315cabbc6bSPrashanth Sreenivasa space_map_free_obj(mos, smobj, tx); 31325cabbc6bSPrashanth Sreenivasa } 31335cabbc6bSPrashanth Sreenivasa 31345cabbc6bSPrashanth Sreenivasa kmem_free(smobj_array, array_bytes); 31355cabbc6bSPrashanth Sreenivasa VERIFY0(dmu_object_free(mos, vd->vdev_ms_array, tx)); 3136814dcd43SSerapheim Dimitropoulos vdev_destroy_ms_flush_data(vd, tx); 31375cabbc6bSPrashanth Sreenivasa vd->vdev_ms_array = 0; 31385cabbc6bSPrashanth Sreenivasa } 31395cabbc6bSPrashanth Sreenivasa 31405cabbc6bSPrashanth Sreenivasa static void 31414e75ba68SSerapheim Dimitropoulos vdev_remove_empty_log(vdev_t *vd, uint64_t txg) 314288ecc943SGeorge Wilson { 314388ecc943SGeorge Wilson spa_t *spa = vd->vdev_spa; 314488ecc943SGeorge Wilson 31454e75ba68SSerapheim Dimitropoulos ASSERT(vd->vdev_islog); 3146215198a6SJoe Stein ASSERT(vd == vd->vdev_top); 3147215198a6SJoe Stein ASSERT3U(txg, ==, spa_syncing_txg(spa)); 314888ecc943SGeorge Wilson 31494e75ba68SSerapheim Dimitropoulos dmu_tx_t *tx = dmu_tx_create_assigned(spa_get_dsl(spa), txg); 3150215198a6SJoe Stein 31514e75ba68SSerapheim Dimitropoulos vdev_destroy_spacemaps(vd, tx); 31524e75ba68SSerapheim Dimitropoulos if (vd->vdev_top_zap != 0) { 3153215198a6SJoe Stein vdev_destroy_unlink_zap(vd, vd->vdev_top_zap, tx); 3154215198a6SJoe Stein vd->vdev_top_zap = 0; 3155215198a6SJoe Stein } 31564e75ba68SSerapheim Dimitropoulos 315788ecc943SGeorge Wilson dmu_tx_commit(tx); 315888ecc943SGeorge Wilson } 315988ecc943SGeorge Wilson 3160fa9e4066Sahrens void 3161fa9e4066Sahrens vdev_sync_done(vdev_t *vd, uint64_t txg) 3162fa9e4066Sahrens { 3163fa9e4066Sahrens metaslab_t *msp; 316480eb36f2SGeorge Wilson boolean_t reassess = !txg_list_empty(&vd->vdev_ms_list, TXG_CLEAN(txg)); 3165fa9e4066Sahrens 31665cabbc6bSPrashanth Sreenivasa ASSERT(vdev_is_concrete(vd)); 316788ecc943SGeorge Wilson 3168094e47e9SGeorge Wilson while ((msp = txg_list_remove(&vd->vdev_ms_list, TXG_CLEAN(txg))) 3169094e47e9SGeorge Wilson != NULL) 3170fa9e4066Sahrens metaslab_sync_done(msp, txg); 317180eb36f2SGeorge Wilson 317280eb36f2SGeorge Wilson if (reassess) 317380eb36f2SGeorge Wilson metaslab_sync_reassess(vd->vdev_mg); 3174fa9e4066Sahrens } 3175fa9e4066Sahrens 3176fa9e4066Sahrens void 3177fa9e4066Sahrens vdev_sync(vdev_t *vd, uint64_t txg) 3178fa9e4066Sahrens { 3179fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 3180fa9e4066Sahrens vdev_t *lvd; 3181fa9e4066Sahrens metaslab_t *msp; 3182fa9e4066Sahrens 3183555d674dSSerapheim Dimitropoulos ASSERT3U(txg, ==, spa->spa_syncing_txg); 3184555d674dSSerapheim Dimitropoulos dmu_tx_t *tx = dmu_tx_create_assigned(spa->spa_dsl_pool, txg); 31855cabbc6bSPrashanth Sreenivasa if (range_tree_space(vd->vdev_obsolete_segments) > 0) { 31865cabbc6bSPrashanth Sreenivasa ASSERT(vd->vdev_removing || 31875cabbc6bSPrashanth Sreenivasa vd->vdev_ops == &vdev_indirect_ops); 318888ecc943SGeorge Wilson 31895cabbc6bSPrashanth Sreenivasa vdev_indirect_sync_obsolete(vd, tx); 31905cabbc6bSPrashanth Sreenivasa 31915cabbc6bSPrashanth Sreenivasa /* 31925cabbc6bSPrashanth Sreenivasa * If the vdev is indirect, it can't have dirty 31935cabbc6bSPrashanth Sreenivasa * metaslabs or DTLs. 31945cabbc6bSPrashanth Sreenivasa */ 31955cabbc6bSPrashanth Sreenivasa if (vd->vdev_ops == &vdev_indirect_ops) { 31965cabbc6bSPrashanth Sreenivasa ASSERT(txg_list_empty(&vd->vdev_ms_list, txg)); 31975cabbc6bSPrashanth Sreenivasa ASSERT(txg_list_empty(&vd->vdev_dtl_list, txg)); 3198555d674dSSerapheim Dimitropoulos dmu_tx_commit(tx); 31995cabbc6bSPrashanth Sreenivasa return; 32005cabbc6bSPrashanth Sreenivasa } 32015cabbc6bSPrashanth Sreenivasa } 32025cabbc6bSPrashanth Sreenivasa 32035cabbc6bSPrashanth Sreenivasa ASSERT(vdev_is_concrete(vd)); 32045cabbc6bSPrashanth Sreenivasa 32055cabbc6bSPrashanth Sreenivasa if (vd->vdev_ms_array == 0 && vd->vdev_ms_shift != 0 && 32065cabbc6bSPrashanth Sreenivasa !vd->vdev_removing) { 3207ecc2d604Sbonwick ASSERT(vd == vd->vdev_top); 32085cabbc6bSPrashanth Sreenivasa ASSERT0(vd->vdev_indirect_config.vic_mapping_object); 3209ecc2d604Sbonwick vd->vdev_ms_array = dmu_object_alloc(spa->spa_meta_objset, 3210ecc2d604Sbonwick DMU_OT_OBJECT_ARRAY, 0, DMU_OT_NONE, 0, tx); 3211ecc2d604Sbonwick ASSERT(vd->vdev_ms_array != 0); 3212ecc2d604Sbonwick vdev_config_dirty(vd); 3213ecc2d604Sbonwick } 3214fa9e4066Sahrens 3215ecc2d604Sbonwick while ((msp = txg_list_remove(&vd->vdev_ms_list, txg)) != NULL) { 3216fa9e4066Sahrens metaslab_sync(msp, txg); 3217ecc2d604Sbonwick (void) txg_list_add(&vd->vdev_ms_list, msp, TXG_CLEAN(txg)); 3218ecc2d604Sbonwick } 3219fa9e4066Sahrens 3220fa9e4066Sahrens while ((lvd = txg_list_remove(&vd->vdev_dtl_list, txg)) != NULL) 3221fa9e4066Sahrens vdev_dtl_sync(lvd, txg); 3222fa9e4066Sahrens 32235cabbc6bSPrashanth Sreenivasa /* 32244e75ba68SSerapheim Dimitropoulos * If this is an empty log device being removed, destroy the 32254e75ba68SSerapheim Dimitropoulos * metadata associated with it. 32265cabbc6bSPrashanth Sreenivasa */ 32274e75ba68SSerapheim Dimitropoulos if (vd->vdev_islog && vd->vdev_stat.vs_alloc == 0 && vd->vdev_removing) 32284e75ba68SSerapheim Dimitropoulos vdev_remove_empty_log(vd, txg); 32295cabbc6bSPrashanth Sreenivasa 3230fa9e4066Sahrens (void) txg_list_add(&spa->spa_vdev_txg_list, vd, TXG_CLEAN(txg)); 3231555d674dSSerapheim Dimitropoulos dmu_tx_commit(tx); 3232fa9e4066Sahrens } 3233fa9e4066Sahrens 3234fa9e4066Sahrens uint64_t 3235fa9e4066Sahrens vdev_psize_to_asize(vdev_t *vd, uint64_t psize) 3236fa9e4066Sahrens { 3237fa9e4066Sahrens return (vd->vdev_ops->vdev_op_asize(vd, psize)); 3238fa9e4066Sahrens } 3239fa9e4066Sahrens 32403d7072f8Seschrock /* 32413d7072f8Seschrock * Mark the given vdev faulted. A faulted vdev behaves as if the device could 32423d7072f8Seschrock * not be opened, and no I/O is attempted. 32433d7072f8Seschrock */ 3244fa9e4066Sahrens int 3245069f55e2SEric Schrock vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux) 3246fa9e4066Sahrens { 32474b964adaSGeorge Wilson vdev_t *vd, *tvd; 3248fa9e4066Sahrens 32498f18d1faSGeorge Wilson spa_vdev_state_enter(spa, SCL_NONE); 3250fa9e4066Sahrens 3251c5904d13Seschrock if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) 3252e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENODEV)); 3253e14bb325SJeff Bonwick 32543d7072f8Seschrock if (!vd->vdev_ops->vdev_op_leaf) 3255e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); 3256fa9e4066Sahrens 32574b964adaSGeorge Wilson tvd = vd->vdev_top; 32584b964adaSGeorge Wilson 3259069f55e2SEric Schrock /* 3260069f55e2SEric Schrock * We don't directly use the aux state here, but if we do a 3261069f55e2SEric Schrock * vdev_reopen(), we need this value to be present to remember why we 3262069f55e2SEric Schrock * were faulted. 3263069f55e2SEric Schrock */ 3264069f55e2SEric Schrock vd->vdev_label_aux = aux; 3265069f55e2SEric Schrock 32663d7072f8Seschrock /* 32673d7072f8Seschrock * Faulted state takes precedence over degraded. 32683d7072f8Seschrock */ 326998d1cbfeSGeorge Wilson vd->vdev_delayed_close = B_FALSE; 32703d7072f8Seschrock vd->vdev_faulted = 1ULL; 32713d7072f8Seschrock vd->vdev_degraded = 0ULL; 3272069f55e2SEric Schrock vdev_set_state(vd, B_FALSE, VDEV_STATE_FAULTED, aux); 32733d7072f8Seschrock 32743d7072f8Seschrock /* 3275c79790bcSGeorge Wilson * If this device has the only valid copy of the data, then 3276c79790bcSGeorge Wilson * back off and simply mark the vdev as degraded instead. 32773d7072f8Seschrock */ 32784b964adaSGeorge Wilson if (!tvd->vdev_islog && vd->vdev_aux == NULL && vdev_dtl_required(vd)) { 32793d7072f8Seschrock vd->vdev_degraded = 1ULL; 32803d7072f8Seschrock vd->vdev_faulted = 0ULL; 32813d7072f8Seschrock 32823d7072f8Seschrock /* 32833d7072f8Seschrock * If we reopen the device and it's not dead, only then do we 32843d7072f8Seschrock * mark it degraded. 32853d7072f8Seschrock */ 32864b964adaSGeorge Wilson vdev_reopen(tvd); 32873d7072f8Seschrock 3288069f55e2SEric Schrock if (vdev_readable(vd)) 3289069f55e2SEric Schrock vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, aux); 32903d7072f8Seschrock } 32913d7072f8Seschrock 3292e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, vd, 0)); 32933d7072f8Seschrock } 32943d7072f8Seschrock 32953d7072f8Seschrock /* 32963d7072f8Seschrock * Mark the given vdev degraded. A degraded vdev is purely an indication to the 32973d7072f8Seschrock * user that something is wrong. The vdev continues to operate as normal as far 32983d7072f8Seschrock * as I/O is concerned. 32993d7072f8Seschrock */ 33003d7072f8Seschrock int 3301069f55e2SEric Schrock vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux) 33023d7072f8Seschrock { 3303c5904d13Seschrock vdev_t *vd; 33040a4e9518Sgw 33058f18d1faSGeorge Wilson spa_vdev_state_enter(spa, SCL_NONE); 33063d7072f8Seschrock 3307c5904d13Seschrock if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) 3308e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENODEV)); 3309e14bb325SJeff Bonwick 33100e34b6a7Sbonwick if (!vd->vdev_ops->vdev_op_leaf) 3311e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); 33120e34b6a7Sbonwick 33133d7072f8Seschrock /* 33143d7072f8Seschrock * If the vdev is already faulted, then don't do anything. 33153d7072f8Seschrock */ 3316e14bb325SJeff Bonwick if (vd->vdev_faulted || vd->vdev_degraded) 3317e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, 0)); 33183d7072f8Seschrock 33193d7072f8Seschrock vd->vdev_degraded = 1ULL; 33203d7072f8Seschrock if (!vdev_is_dead(vd)) 33213d7072f8Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, 3322069f55e2SEric Schrock aux); 33233d7072f8Seschrock 3324e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, vd, 0)); 33253d7072f8Seschrock } 33263d7072f8Seschrock 33273d7072f8Seschrock /* 3328f7170741SWill Andrews * Online the given vdev. 3329f7170741SWill Andrews * 3330f7170741SWill Andrews * If 'ZFS_ONLINE_UNSPARE' is set, it implies two things. First, any attached 3331f7170741SWill Andrews * spare device should be detached when the device finishes resilvering. 3332f7170741SWill Andrews * Second, the online should be treated like a 'test' online case, so no FMA 3333f7170741SWill Andrews * events are generated if the device fails to open. 33343d7072f8Seschrock */ 33353d7072f8Seschrock int 3336e14bb325SJeff Bonwick vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, vdev_state_t *newstate) 33373d7072f8Seschrock { 3338573ca77eSGeorge Wilson vdev_t *vd, *tvd, *pvd, *rvd = spa->spa_root_vdev; 33395f368aefSYuri Pankov boolean_t wasoffline; 33405f368aefSYuri Pankov vdev_state_t oldstate; 33413d7072f8Seschrock 33428f18d1faSGeorge Wilson spa_vdev_state_enter(spa, SCL_NONE); 33433d7072f8Seschrock 3344c5904d13Seschrock if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) 3345e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENODEV)); 33463d7072f8Seschrock 33473d7072f8Seschrock if (!vd->vdev_ops->vdev_op_leaf) 3348e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); 3349fa9e4066Sahrens 33505f368aefSYuri Pankov wasoffline = (vd->vdev_offline || vd->vdev_tmpoffline); 33515f368aefSYuri Pankov oldstate = vd->vdev_state; 335214372834SHans Rosenfeld 3353573ca77eSGeorge Wilson tvd = vd->vdev_top; 3354fa9e4066Sahrens vd->vdev_offline = B_FALSE; 3355441d80aaSlling vd->vdev_tmpoffline = B_FALSE; 3356e14bb325SJeff Bonwick vd->vdev_checkremove = !!(flags & ZFS_ONLINE_CHECKREMOVE); 3357e14bb325SJeff Bonwick vd->vdev_forcefault = !!(flags & ZFS_ONLINE_FORCEFAULT); 3358573ca77eSGeorge Wilson 3359573ca77eSGeorge Wilson /* XXX - L2ARC 1.0 does not support expansion */ 3360573ca77eSGeorge Wilson if (!vd->vdev_aux) { 3361573ca77eSGeorge Wilson for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) 3362573ca77eSGeorge Wilson pvd->vdev_expanding = !!(flags & ZFS_ONLINE_EXPAND); 3363573ca77eSGeorge Wilson } 3364573ca77eSGeorge Wilson 3365573ca77eSGeorge Wilson vdev_reopen(tvd); 33663d7072f8Seschrock vd->vdev_checkremove = vd->vdev_forcefault = B_FALSE; 33673d7072f8Seschrock 3368573ca77eSGeorge Wilson if (!vd->vdev_aux) { 3369573ca77eSGeorge Wilson for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) 3370573ca77eSGeorge Wilson pvd->vdev_expanding = B_FALSE; 3371573ca77eSGeorge Wilson } 3372573ca77eSGeorge Wilson 33733d7072f8Seschrock if (newstate) 33743d7072f8Seschrock *newstate = vd->vdev_state; 33753d7072f8Seschrock if ((flags & ZFS_ONLINE_UNSPARE) && 33763d7072f8Seschrock !vdev_is_dead(vd) && vd->vdev_parent && 33773d7072f8Seschrock vd->vdev_parent->vdev_ops == &vdev_spare_ops && 33783d7072f8Seschrock vd->vdev_parent->vdev_child[0] == vd) 33793d7072f8Seschrock vd->vdev_unspare = B_TRUE; 3380fa9e4066Sahrens 3381573ca77eSGeorge Wilson if ((flags & ZFS_ONLINE_EXPAND) || spa->spa_autoexpand) { 3382573ca77eSGeorge Wilson 3383573ca77eSGeorge Wilson /* XXX - L2ARC 1.0 does not support expansion */ 3384573ca77eSGeorge Wilson if (vd->vdev_aux) 3385573ca77eSGeorge Wilson return (spa_vdev_state_exit(spa, vd, ENOTSUP)); 3386573ca77eSGeorge Wilson spa_async_request(spa, SPA_ASYNC_CONFIG_UPDATE); 3387573ca77eSGeorge Wilson } 338814372834SHans Rosenfeld 3389094e47e9SGeorge Wilson /* Restart initializing if necessary */ 3390094e47e9SGeorge Wilson mutex_enter(&vd->vdev_initialize_lock); 3391094e47e9SGeorge Wilson if (vdev_writeable(vd) && 3392094e47e9SGeorge Wilson vd->vdev_initialize_thread == NULL && 3393094e47e9SGeorge Wilson vd->vdev_initialize_state == VDEV_INITIALIZE_ACTIVE) { 3394094e47e9SGeorge Wilson (void) vdev_initialize(vd); 3395094e47e9SGeorge Wilson } 3396094e47e9SGeorge Wilson mutex_exit(&vd->vdev_initialize_lock); 3397094e47e9SGeorge Wilson 3398084fd14fSBrian Behlendorf /* Restart trimming if necessary */ 3399084fd14fSBrian Behlendorf mutex_enter(&vd->vdev_trim_lock); 3400084fd14fSBrian Behlendorf if (vdev_writeable(vd) && 3401084fd14fSBrian Behlendorf vd->vdev_trim_thread == NULL && 3402084fd14fSBrian Behlendorf vd->vdev_trim_state == VDEV_TRIM_ACTIVE) { 3403084fd14fSBrian Behlendorf (void) vdev_trim(vd, vd->vdev_trim_rate, vd->vdev_trim_partial, 3404084fd14fSBrian Behlendorf vd->vdev_trim_secure); 3405084fd14fSBrian Behlendorf } 3406084fd14fSBrian Behlendorf mutex_exit(&vd->vdev_trim_lock); 3407084fd14fSBrian Behlendorf 34085f368aefSYuri Pankov if (wasoffline || 34095f368aefSYuri Pankov (oldstate < VDEV_STATE_DEGRADED && 34105f368aefSYuri Pankov vd->vdev_state >= VDEV_STATE_DEGRADED)) 3411ce1577b0SDave Eddy spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_ONLINE); 341214372834SHans Rosenfeld 34138ad4d6ddSJeff Bonwick return (spa_vdev_state_exit(spa, vd, 0)); 3414fa9e4066Sahrens } 3415fa9e4066Sahrens 3416a1521560SJeff Bonwick static int 3417a1521560SJeff Bonwick vdev_offline_locked(spa_t *spa, uint64_t guid, uint64_t flags) 3418fa9e4066Sahrens { 3419e6ca193dSGeorge Wilson vdev_t *vd, *tvd; 34208f18d1faSGeorge Wilson int error = 0; 34218f18d1faSGeorge Wilson uint64_t generation; 34228f18d1faSGeorge Wilson metaslab_group_t *mg; 34230a4e9518Sgw 34248f18d1faSGeorge Wilson top: 34258f18d1faSGeorge Wilson spa_vdev_state_enter(spa, SCL_ALLOC); 3426fa9e4066Sahrens 3427c5904d13Seschrock if ((vd = spa_lookup_by_guid(spa, guid, B_TRUE)) == NULL) 3428e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENODEV)); 3429fa9e4066Sahrens 34300e34b6a7Sbonwick if (!vd->vdev_ops->vdev_op_leaf) 3431e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, ENOTSUP)); 34320e34b6a7Sbonwick 3433e6ca193dSGeorge Wilson tvd = vd->vdev_top; 34348f18d1faSGeorge Wilson mg = tvd->vdev_mg; 34358f18d1faSGeorge Wilson generation = spa->spa_config_generation + 1; 3436e6ca193dSGeorge Wilson 3437fa9e4066Sahrens /* 3438ecc2d604Sbonwick * If the device isn't already offline, try to offline it. 3439fa9e4066Sahrens */ 3440ecc2d604Sbonwick if (!vd->vdev_offline) { 3441ecc2d604Sbonwick /* 34428ad4d6ddSJeff Bonwick * If this device has the only valid copy of some data, 3443e6ca193dSGeorge Wilson * don't allow it to be offlined. Log devices are always 3444e6ca193dSGeorge Wilson * expendable. 3445ecc2d604Sbonwick */ 3446e6ca193dSGeorge Wilson if (!tvd->vdev_islog && vd->vdev_aux == NULL && 3447e6ca193dSGeorge Wilson vdev_dtl_required(vd)) 3448e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, EBUSY)); 3449fa9e4066Sahrens 34508f18d1faSGeorge Wilson /* 3451b24ab676SJeff Bonwick * If the top-level is a slog and it has had allocations 3452b24ab676SJeff Bonwick * then proceed. We check that the vdev's metaslab group 3453b24ab676SJeff Bonwick * is not NULL since it's possible that we may have just 3454b24ab676SJeff Bonwick * added this vdev but not yet initialized its metaslabs. 34558f18d1faSGeorge Wilson */ 34568f18d1faSGeorge Wilson if (tvd->vdev_islog && mg != NULL) { 34578f18d1faSGeorge Wilson /* 34588f18d1faSGeorge Wilson * Prevent any future allocations. 34598f18d1faSGeorge Wilson */ 3460a1521560SJeff Bonwick metaslab_group_passivate(mg); 34618f18d1faSGeorge Wilson (void) spa_vdev_state_exit(spa, vd, 0); 34628f18d1faSGeorge Wilson 34635cabbc6bSPrashanth Sreenivasa error = spa_reset_logs(spa); 34648f18d1faSGeorge Wilson 346586714001SSerapheim Dimitropoulos /* 346686714001SSerapheim Dimitropoulos * If the log device was successfully reset but has 346786714001SSerapheim Dimitropoulos * checkpointed data, do not offline it. 346886714001SSerapheim Dimitropoulos */ 346986714001SSerapheim Dimitropoulos if (error == 0 && 347086714001SSerapheim Dimitropoulos tvd->vdev_checkpoint_sm != NULL) { 347186714001SSerapheim Dimitropoulos error = ZFS_ERR_CHECKPOINT_EXISTS; 347286714001SSerapheim Dimitropoulos } 347386714001SSerapheim Dimitropoulos 34748f18d1faSGeorge Wilson spa_vdev_state_enter(spa, SCL_ALLOC); 34758f18d1faSGeorge Wilson 34768f18d1faSGeorge Wilson /* 34778f18d1faSGeorge Wilson * Check to see if the config has changed. 34788f18d1faSGeorge Wilson */ 34798f18d1faSGeorge Wilson if (error || generation != spa->spa_config_generation) { 3480a1521560SJeff Bonwick metaslab_group_activate(mg); 34818f18d1faSGeorge Wilson if (error) 34828f18d1faSGeorge Wilson return (spa_vdev_state_exit(spa, 34838f18d1faSGeorge Wilson vd, error)); 34848f18d1faSGeorge Wilson (void) spa_vdev_state_exit(spa, vd, 0); 34858f18d1faSGeorge Wilson goto top; 34868f18d1faSGeorge Wilson } 3487fb09f5aaSMadhav Suresh ASSERT0(tvd->vdev_stat.vs_alloc); 34888f18d1faSGeorge Wilson } 34898f18d1faSGeorge Wilson 3490ecc2d604Sbonwick /* 3491ecc2d604Sbonwick * Offline this device and reopen its top-level vdev. 3492e6ca193dSGeorge Wilson * If the top-level vdev is a log device then just offline 3493e6ca193dSGeorge Wilson * it. Otherwise, if this action results in the top-level 3494e6ca193dSGeorge Wilson * vdev becoming unusable, undo it and fail the request. 3495ecc2d604Sbonwick */ 3496ecc2d604Sbonwick vd->vdev_offline = B_TRUE; 3497e6ca193dSGeorge Wilson vdev_reopen(tvd); 3498e6ca193dSGeorge Wilson 3499e6ca193dSGeorge Wilson if (!tvd->vdev_islog && vd->vdev_aux == NULL && 3500e6ca193dSGeorge Wilson vdev_is_dead(tvd)) { 3501ecc2d604Sbonwick vd->vdev_offline = B_FALSE; 3502e6ca193dSGeorge Wilson vdev_reopen(tvd); 3503e14bb325SJeff Bonwick return (spa_vdev_state_exit(spa, NULL, EBUSY)); 3504ecc2d604Sbonwick } 35058f18d1faSGeorge Wilson 35068f18d1faSGeorge Wilson /* 35078f18d1faSGeorge Wilson * Add the device back into the metaslab rotor so that 35088f18d1faSGeorge Wilson * once we online the device it's open for business. 35098f18d1faSGeorge Wilson */ 35108f18d1faSGeorge Wilson if (tvd->vdev_islog && mg != NULL) 3511a1521560SJeff Bonwick metaslab_group_activate(mg); 3512fa9e4066Sahrens } 3513fa9e4066Sahrens 3514e14bb325SJeff Bonwick vd->vdev_tmpoffline = !!(flags & ZFS_OFFLINE_TEMPORARY); 3515ecc2d604Sbonwick 35168f18d1faSGeorge Wilson return (spa_vdev_state_exit(spa, vd, 0)); 3517fa9e4066Sahrens } 3518fa9e4066Sahrens 3519a1521560SJeff Bonwick int 3520a1521560SJeff Bonwick vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags) 3521a1521560SJeff Bonwick { 3522a1521560SJeff Bonwick int error; 3523a1521560SJeff Bonwick 3524a1521560SJeff Bonwick mutex_enter(&spa->spa_vdev_top_lock); 3525a1521560SJeff Bonwick error = vdev_offline_locked(spa, guid, flags); 3526a1521560SJeff Bonwick mutex_exit(&spa->spa_vdev_top_lock); 3527a1521560SJeff Bonwick 3528a1521560SJeff Bonwick return (error); 3529a1521560SJeff Bonwick } 3530a1521560SJeff Bonwick 3531ea8dc4b6Seschrock /* 3532ea8dc4b6Seschrock * Clear the error counts associated with this vdev. Unlike vdev_online() and 3533ea8dc4b6Seschrock * vdev_offline(), we assume the spa config is locked. We also clear all 3534ea8dc4b6Seschrock * children. If 'vd' is NULL, then the user wants to clear all vdevs. 3535ea8dc4b6Seschrock */ 3536ea8dc4b6Seschrock void 3537e14bb325SJeff Bonwick vdev_clear(spa_t *spa, vdev_t *vd) 3538fa9e4066Sahrens { 3539e14bb325SJeff Bonwick vdev_t *rvd = spa->spa_root_vdev; 3540e14bb325SJeff Bonwick 3541e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE_ALL, RW_WRITER) == SCL_STATE_ALL); 3542fa9e4066Sahrens 3543ea8dc4b6Seschrock if (vd == NULL) 3544e14bb325SJeff Bonwick vd = rvd; 3545fa9e4066Sahrens 3546ea8dc4b6Seschrock vd->vdev_stat.vs_read_errors = 0; 3547ea8dc4b6Seschrock vd->vdev_stat.vs_write_errors = 0; 3548ea8dc4b6Seschrock vd->vdev_stat.vs_checksum_errors = 0; 3549dd50e0ccSTony Hutter vd->vdev_stat.vs_slow_ios = 0; 3550fa9e4066Sahrens 3551e14bb325SJeff Bonwick for (int c = 0; c < vd->vdev_children; c++) 3552e14bb325SJeff Bonwick vdev_clear(spa, vd->vdev_child[c]); 35533d7072f8Seschrock 35545cabbc6bSPrashanth Sreenivasa /* 35555cabbc6bSPrashanth Sreenivasa * It makes no sense to "clear" an indirect vdev. 35565cabbc6bSPrashanth Sreenivasa */ 35575cabbc6bSPrashanth Sreenivasa if (!vdev_is_concrete(vd)) 35585cabbc6bSPrashanth Sreenivasa return; 35595cabbc6bSPrashanth Sreenivasa 35603d7072f8Seschrock /* 35618a79c1b5Sek * If we're in the FAULTED state or have experienced failed I/O, then 35628a79c1b5Sek * clear the persistent state and attempt to reopen the device. We 35638a79c1b5Sek * also mark the vdev config dirty, so that the new faulted state is 35648a79c1b5Sek * written out to disk. 35653d7072f8Seschrock */ 3566e14bb325SJeff Bonwick if (vd->vdev_faulted || vd->vdev_degraded || 3567e14bb325SJeff Bonwick !vdev_readable(vd) || !vdev_writeable(vd)) { 35688a79c1b5Sek 3569096d22d4SEric Schrock /* 3570096d22d4SEric Schrock * When reopening in reponse to a clear event, it may be due to 3571096d22d4SEric Schrock * a fmadm repair request. In this case, if the device is 3572096d22d4SEric Schrock * still broken, we want to still post the ereport again. 3573096d22d4SEric Schrock */ 3574096d22d4SEric Schrock vd->vdev_forcefault = B_TRUE; 3575096d22d4SEric Schrock 35764b964adaSGeorge Wilson vd->vdev_faulted = vd->vdev_degraded = 0ULL; 3577e14bb325SJeff Bonwick vd->vdev_cant_read = B_FALSE; 3578e14bb325SJeff Bonwick vd->vdev_cant_write = B_FALSE; 3579e14bb325SJeff Bonwick 3580f9af39baSGeorge Wilson vdev_reopen(vd == rvd ? rvd : vd->vdev_top); 35813d7072f8Seschrock 3582096d22d4SEric Schrock vd->vdev_forcefault = B_FALSE; 3583096d22d4SEric Schrock 3584f9af39baSGeorge Wilson if (vd != rvd && vdev_writeable(vd->vdev_top)) 3585e14bb325SJeff Bonwick vdev_state_dirty(vd->vdev_top); 3586e14bb325SJeff Bonwick 35870c06d385Sjwpoduska /* If a resilver isn't required, check if vdevs can be culled */ 35880c06d385Sjwpoduska if (vd->vdev_aux == NULL && !vdev_is_dead(vd) && 35890c06d385Sjwpoduska !dsl_scan_resilvering(spa->spa_dsl_pool) && 35900c06d385Sjwpoduska !dsl_scan_resilver_scheduled(spa->spa_dsl_pool)) 35910c06d385Sjwpoduska spa_async_request(spa, SPA_ASYNC_RESILVER_DONE); 35923d7072f8Seschrock 3593ce1577b0SDave Eddy spa_event_notify(spa, vd, NULL, ESC_ZFS_VDEV_CLEAR); 35943d7072f8Seschrock } 3595096d22d4SEric Schrock 3596096d22d4SEric Schrock /* 3597096d22d4SEric Schrock * When clearing a FMA-diagnosed fault, we always want to 3598096d22d4SEric Schrock * unspare the device, as we assume that the original spare was 3599096d22d4SEric Schrock * done in response to the FMA fault. 3600096d22d4SEric Schrock */ 3601096d22d4SEric Schrock if (!vdev_is_dead(vd) && vd->vdev_parent != NULL && 3602096d22d4SEric Schrock vd->vdev_parent->vdev_ops == &vdev_spare_ops && 3603096d22d4SEric Schrock vd->vdev_parent->vdev_child[0] == vd) 3604096d22d4SEric Schrock vd->vdev_unspare = B_TRUE; 3605fa9e4066Sahrens } 3606fa9e4066Sahrens 3607e14bb325SJeff Bonwick boolean_t 3608e14bb325SJeff Bonwick vdev_is_dead(vdev_t *vd) 36090a4e9518Sgw { 361088ecc943SGeorge Wilson /* 361188ecc943SGeorge Wilson * Holes and missing devices are always considered "dead". 361288ecc943SGeorge Wilson * This simplifies the code since we don't have to check for 361388ecc943SGeorge Wilson * these types of devices in the various code paths. 361488ecc943SGeorge Wilson * Instead we rely on the fact that we skip over dead devices 361588ecc943SGeorge Wilson * before issuing I/O to them. 361688ecc943SGeorge Wilson */ 36175cabbc6bSPrashanth Sreenivasa return (vd->vdev_state < VDEV_STATE_DEGRADED || 36185cabbc6bSPrashanth Sreenivasa vd->vdev_ops == &vdev_hole_ops || 361988ecc943SGeorge Wilson vd->vdev_ops == &vdev_missing_ops); 36200a4e9518Sgw } 36210a4e9518Sgw 3622e14bb325SJeff Bonwick boolean_t 3623e14bb325SJeff Bonwick vdev_readable(vdev_t *vd) 36240a4e9518Sgw { 3625e14bb325SJeff Bonwick return (!vdev_is_dead(vd) && !vd->vdev_cant_read); 36260a4e9518Sgw } 36270a4e9518Sgw 3628e14bb325SJeff Bonwick boolean_t 3629e14bb325SJeff Bonwick vdev_writeable(vdev_t *vd) 3630fa9e4066Sahrens { 36315cabbc6bSPrashanth Sreenivasa return (!vdev_is_dead(vd) && !vd->vdev_cant_write && 36325cabbc6bSPrashanth Sreenivasa vdev_is_concrete(vd)); 3633fa9e4066Sahrens } 3634fa9e4066Sahrens 3635a31e6787SGeorge Wilson boolean_t 3636a31e6787SGeorge Wilson vdev_allocatable(vdev_t *vd) 3637a31e6787SGeorge Wilson { 36388ad4d6ddSJeff Bonwick uint64_t state = vd->vdev_state; 36398ad4d6ddSJeff Bonwick 3640a31e6787SGeorge Wilson /* 36418ad4d6ddSJeff Bonwick * We currently allow allocations from vdevs which may be in the 3642a31e6787SGeorge Wilson * process of reopening (i.e. VDEV_STATE_CLOSED). If the device 3643a31e6787SGeorge Wilson * fails to reopen then we'll catch it later when we're holding 36448ad4d6ddSJeff Bonwick * the proper locks. Note that we have to get the vdev state 36458ad4d6ddSJeff Bonwick * in a local variable because although it changes atomically, 36468ad4d6ddSJeff Bonwick * we're asking two separate questions about it. 3647a31e6787SGeorge Wilson */ 36488ad4d6ddSJeff Bonwick return (!(state < VDEV_STATE_DEGRADED && state != VDEV_STATE_CLOSED) && 36495cabbc6bSPrashanth Sreenivasa !vd->vdev_cant_write && vdev_is_concrete(vd) && 36500f7643c7SGeorge Wilson vd->vdev_mg->mg_initialized); 3651a31e6787SGeorge Wilson } 3652a31e6787SGeorge Wilson 3653e14bb325SJeff Bonwick boolean_t 3654e14bb325SJeff Bonwick vdev_accessible(vdev_t *vd, zio_t *zio) 3655fa9e4066Sahrens { 3656e14bb325SJeff Bonwick ASSERT(zio->io_vd == vd); 3657fa9e4066Sahrens 3658e14bb325SJeff Bonwick if (vdev_is_dead(vd) || vd->vdev_remove_wanted) 3659e14bb325SJeff Bonwick return (B_FALSE); 3660fa9e4066Sahrens 3661e14bb325SJeff Bonwick if (zio->io_type == ZIO_TYPE_READ) 3662e14bb325SJeff Bonwick return (!vd->vdev_cant_read); 3663fa9e4066Sahrens 3664e14bb325SJeff Bonwick if (zio->io_type == ZIO_TYPE_WRITE) 3665e14bb325SJeff Bonwick return (!vd->vdev_cant_write); 3666fa9e4066Sahrens 3667e14bb325SJeff Bonwick return (B_TRUE); 3668fa9e4066Sahrens } 3669fa9e4066Sahrens 3670dd50e0ccSTony Hutter static void 3671dd50e0ccSTony Hutter vdev_get_child_stat(vdev_t *cvd, vdev_stat_t *vs, vdev_stat_t *cvs) 3672dd50e0ccSTony Hutter { 3673dd50e0ccSTony Hutter for (int t = 0; t < VS_ZIO_TYPES; t++) { 3674dd50e0ccSTony Hutter vs->vs_ops[t] += cvs->vs_ops[t]; 3675dd50e0ccSTony Hutter vs->vs_bytes[t] += cvs->vs_bytes[t]; 3676dd50e0ccSTony Hutter } 3677dd50e0ccSTony Hutter 3678dd50e0ccSTony Hutter cvs->vs_scan_removing = cvd->vdev_removing; 3679dd50e0ccSTony Hutter } 3680dd50e0ccSTony Hutter 3681dd50e0ccSTony Hutter /* 3682dd50e0ccSTony Hutter * Get extended stats 3683dd50e0ccSTony Hutter */ 3684dd50e0ccSTony Hutter static void 3685dd50e0ccSTony Hutter vdev_get_child_stat_ex(vdev_t *cvd, vdev_stat_ex_t *vsx, vdev_stat_ex_t *cvsx) 3686dd50e0ccSTony Hutter { 3687dd50e0ccSTony Hutter int t, b; 3688dd50e0ccSTony Hutter for (t = 0; t < ZIO_TYPES; t++) { 3689dd50e0ccSTony Hutter for (b = 0; b < ARRAY_SIZE(vsx->vsx_disk_histo[0]); b++) 3690dd50e0ccSTony Hutter vsx->vsx_disk_histo[t][b] += cvsx->vsx_disk_histo[t][b]; 3691dd50e0ccSTony Hutter 3692dd50e0ccSTony Hutter for (b = 0; b < ARRAY_SIZE(vsx->vsx_total_histo[0]); b++) { 3693dd50e0ccSTony Hutter vsx->vsx_total_histo[t][b] += 3694dd50e0ccSTony Hutter cvsx->vsx_total_histo[t][b]; 3695dd50e0ccSTony Hutter } 3696dd50e0ccSTony Hutter } 3697dd50e0ccSTony Hutter 3698dd50e0ccSTony Hutter for (t = 0; t < ZIO_PRIORITY_NUM_QUEUEABLE; t++) { 3699dd50e0ccSTony Hutter for (b = 0; b < ARRAY_SIZE(vsx->vsx_queue_histo[0]); b++) { 3700dd50e0ccSTony Hutter vsx->vsx_queue_histo[t][b] += 3701dd50e0ccSTony Hutter cvsx->vsx_queue_histo[t][b]; 3702dd50e0ccSTony Hutter } 3703dd50e0ccSTony Hutter vsx->vsx_active_queue[t] += cvsx->vsx_active_queue[t]; 3704dd50e0ccSTony Hutter vsx->vsx_pend_queue[t] += cvsx->vsx_pend_queue[t]; 3705dd50e0ccSTony Hutter 3706dd50e0ccSTony Hutter for (b = 0; b < ARRAY_SIZE(vsx->vsx_ind_histo[0]); b++) 3707dd50e0ccSTony Hutter vsx->vsx_ind_histo[t][b] += cvsx->vsx_ind_histo[t][b]; 3708dd50e0ccSTony Hutter 3709dd50e0ccSTony Hutter for (b = 0; b < ARRAY_SIZE(vsx->vsx_agg_histo[0]); b++) 3710dd50e0ccSTony Hutter vsx->vsx_agg_histo[t][b] += cvsx->vsx_agg_histo[t][b]; 3711dd50e0ccSTony Hutter } 3712dd50e0ccSTony Hutter 3713dd50e0ccSTony Hutter } 3714dd50e0ccSTony Hutter 371586714001SSerapheim Dimitropoulos boolean_t 371686714001SSerapheim Dimitropoulos vdev_is_spacemap_addressable(vdev_t *vd) 371786714001SSerapheim Dimitropoulos { 3718a0b03b16SSerapheim Dimitropoulos if (spa_feature_is_active(vd->vdev_spa, SPA_FEATURE_SPACEMAP_V2)) 3719a0b03b16SSerapheim Dimitropoulos return (B_TRUE); 3720a0b03b16SSerapheim Dimitropoulos 372186714001SSerapheim Dimitropoulos /* 3722a0b03b16SSerapheim Dimitropoulos * If double-word space map entries are not enabled we assume 3723a0b03b16SSerapheim Dimitropoulos * 47 bits of the space map entry are dedicated to the entry's 3724a0b03b16SSerapheim Dimitropoulos * offset (see SM_OFFSET_BITS in space_map.h). We then use that 3725a0b03b16SSerapheim Dimitropoulos * to calculate the maximum address that can be described by a 3726a0b03b16SSerapheim Dimitropoulos * space map entry for the given device. 372786714001SSerapheim Dimitropoulos */ 3728a0b03b16SSerapheim Dimitropoulos uint64_t shift = vd->vdev_ashift + SM_OFFSET_BITS; 372986714001SSerapheim Dimitropoulos 373086714001SSerapheim Dimitropoulos if (shift >= 63) /* detect potential overflow */ 373186714001SSerapheim Dimitropoulos return (B_TRUE); 373286714001SSerapheim Dimitropoulos 373386714001SSerapheim Dimitropoulos return (vd->vdev_asize < (1ULL << shift)); 373486714001SSerapheim Dimitropoulos } 373586714001SSerapheim Dimitropoulos 3736fa9e4066Sahrens /* 3737fa9e4066Sahrens * Get statistics for the given vdev. 3738fa9e4066Sahrens */ 3739dd50e0ccSTony Hutter static void 3740dd50e0ccSTony Hutter vdev_get_stats_ex_impl(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx) 3741fa9e4066Sahrens { 3742dd50e0ccSTony Hutter int t; 3743dd50e0ccSTony Hutter /* 3744dd50e0ccSTony Hutter * If we're getting stats on the root vdev, aggregate the I/O counts 3745dd50e0ccSTony Hutter * over all top-level vdevs (i.e. the direct children of the root). 3746dd50e0ccSTony Hutter */ 3747dd50e0ccSTony Hutter if (!vd->vdev_ops->vdev_op_leaf) { 3748dd50e0ccSTony Hutter if (vs) { 3749dd50e0ccSTony Hutter memset(vs->vs_ops, 0, sizeof (vs->vs_ops)); 3750dd50e0ccSTony Hutter memset(vs->vs_bytes, 0, sizeof (vs->vs_bytes)); 3751dd50e0ccSTony Hutter } 3752dd50e0ccSTony Hutter if (vsx) 3753dd50e0ccSTony Hutter memset(vsx, 0, sizeof (*vsx)); 37542e4c9986SGeorge Wilson 3755dd50e0ccSTony Hutter for (int c = 0; c < vd->vdev_children; c++) { 3756dd50e0ccSTony Hutter vdev_t *cvd = vd->vdev_child[c]; 3757dd50e0ccSTony Hutter vdev_stat_t *cvs = &cvd->vdev_stat; 3758dd50e0ccSTony Hutter vdev_stat_ex_t *cvsx = &cvd->vdev_stat_ex; 3759fa9e4066Sahrens 3760dd50e0ccSTony Hutter vdev_get_stats_ex_impl(cvd, cvs, cvsx); 3761dd50e0ccSTony Hutter if (vs) 3762dd50e0ccSTony Hutter vdev_get_child_stat(cvd, vs, cvs); 3763dd50e0ccSTony Hutter if (vsx) 3764dd50e0ccSTony Hutter vdev_get_child_stat_ex(cvd, vsx, cvsx); 3765dd50e0ccSTony Hutter 3766dd50e0ccSTony Hutter } 3767dd50e0ccSTony Hutter } else { 3768094e47e9SGeorge Wilson /* 3769dd50e0ccSTony Hutter * We're a leaf. Just copy our ZIO active queue stats in. The 3770dd50e0ccSTony Hutter * other leaf stats are updated in vdev_stat_update(). 3771094e47e9SGeorge Wilson */ 3772dd50e0ccSTony Hutter if (!vsx) 3773dd50e0ccSTony Hutter return; 3774084fd14fSBrian Behlendorf 3775dd50e0ccSTony Hutter memcpy(vsx, &vd->vdev_stat_ex, sizeof (vd->vdev_stat_ex)); 3776084fd14fSBrian Behlendorf 3777dd50e0ccSTony Hutter for (t = 0; t < ARRAY_SIZE(vd->vdev_queue.vq_class); t++) { 3778dd50e0ccSTony Hutter vsx->vsx_active_queue[t] = 3779dd50e0ccSTony Hutter vd->vdev_queue.vq_class[t].vqc_active; 3780dd50e0ccSTony Hutter vsx->vsx_pend_queue[t] = avl_numnodes( 3781dd50e0ccSTony Hutter &vd->vdev_queue.vq_class[t].vqc_queued_tree); 3782dd50e0ccSTony Hutter } 37832986efa8SAlex Reece } 3784dd50e0ccSTony Hutter } 3785fa9e4066Sahrens 3786dd50e0ccSTony Hutter void 3787dd50e0ccSTony Hutter vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx) 3788dd50e0ccSTony Hutter { 3789dd50e0ccSTony Hutter vdev_t *tvd = vd->vdev_top; 37909a4eed61SToomas Soome spa_t *spa = vd->vdev_spa; 37919a4eed61SToomas Soome 3792dd50e0ccSTony Hutter mutex_enter(&vd->vdev_stat_lock); 3793dd50e0ccSTony Hutter if (vs) { 3794dd50e0ccSTony Hutter bcopy(&vd->vdev_stat, vs, sizeof (*vs)); 3795dd50e0ccSTony Hutter vs->vs_timestamp = gethrtime() - vs->vs_timestamp; 3796dd50e0ccSTony Hutter vs->vs_state = vd->vdev_state; 3797dd50e0ccSTony Hutter vs->vs_rsize = vdev_get_min_asize(vd); 3798dd50e0ccSTony Hutter if (vd->vdev_ops->vdev_op_leaf) { 3799dd50e0ccSTony Hutter vs->vs_rsize += VDEV_LABEL_START_SIZE + 3800dd50e0ccSTony Hutter VDEV_LABEL_END_SIZE; 3801dd50e0ccSTony Hutter /* 3802dd50e0ccSTony Hutter * Report initializing progress. Since we don't 3803dd50e0ccSTony Hutter * have the initializing locks held, this is only 3804dd50e0ccSTony Hutter * an estimate (although a fairly accurate one). 3805dd50e0ccSTony Hutter */ 3806dd50e0ccSTony Hutter vs->vs_initialize_bytes_done = 3807dd50e0ccSTony Hutter vd->vdev_initialize_bytes_done; 3808dd50e0ccSTony Hutter vs->vs_initialize_bytes_est = 3809dd50e0ccSTony Hutter vd->vdev_initialize_bytes_est; 3810dd50e0ccSTony Hutter vs->vs_initialize_state = vd->vdev_initialize_state; 3811dd50e0ccSTony Hutter vs->vs_initialize_action_time = 3812dd50e0ccSTony Hutter vd->vdev_initialize_action_time; 3813fa9e4066Sahrens 3814dd50e0ccSTony Hutter /* 3815dd50e0ccSTony Hutter * Report manual TRIM progress. Since we don't have 3816dd50e0ccSTony Hutter * the manual TRIM locks held, this is only an 3817dd50e0ccSTony Hutter * estimate (although fairly accurate one). 3818dd50e0ccSTony Hutter */ 3819dd50e0ccSTony Hutter vs->vs_trim_notsup = !vd->vdev_has_trim; 3820dd50e0ccSTony Hutter vs->vs_trim_bytes_done = vd->vdev_trim_bytes_done; 3821dd50e0ccSTony Hutter vs->vs_trim_bytes_est = vd->vdev_trim_bytes_est; 3822dd50e0ccSTony Hutter vs->vs_trim_state = vd->vdev_trim_state; 3823dd50e0ccSTony Hutter vs->vs_trim_action_time = vd->vdev_trim_action_time; 3824dd50e0ccSTony Hutter } 3825dd50e0ccSTony Hutter /* 3826dd50e0ccSTony Hutter * Report expandable space on top-level, non-auxiliary devices 3827dd50e0ccSTony Hutter * only. The expandable space is reported in terms of metaslab 3828dd50e0ccSTony Hutter * sized units since that determines how much space the pool 3829dd50e0ccSTony Hutter * can expand. 3830dd50e0ccSTony Hutter */ 3831dd50e0ccSTony Hutter if (vd->vdev_aux == NULL && tvd != NULL) { 3832dd50e0ccSTony Hutter vs->vs_esize = P2ALIGN( 38339a4eed61SToomas Soome vd->vdev_max_asize - vd->vdev_asize - 38349a4eed61SToomas Soome spa->spa_bootsize, 1ULL << tvd->vdev_ms_shift); 3835dd50e0ccSTony Hutter } 3836dd50e0ccSTony Hutter if (vd->vdev_aux == NULL && vd == vd->vdev_top && 3837dd50e0ccSTony Hutter vdev_is_concrete(vd)) { 3838dd50e0ccSTony Hutter vs->vs_fragmentation = (vd->vdev_mg != NULL) ? 3839dd50e0ccSTony Hutter vd->vdev_mg->mg_fragmentation : 0; 3840fa9e4066Sahrens } 3841dd50e0ccSTony Hutter if (vd->vdev_ops->vdev_op_leaf) 3842dd50e0ccSTony Hutter vs->vs_resilver_deferred = vd->vdev_resilver_deferred; 3843fa9e4066Sahrens } 3844dd50e0ccSTony Hutter 3845dd50e0ccSTony Hutter vdev_get_stats_ex_impl(vd, vs, vsx); 38462e4c9986SGeorge Wilson mutex_exit(&vd->vdev_stat_lock); 3847fa9e4066Sahrens } 3848fa9e4066Sahrens 3849dd50e0ccSTony Hutter void 3850dd50e0ccSTony Hutter vdev_get_stats(vdev_t *vd, vdev_stat_t *vs) 3851dd50e0ccSTony Hutter { 3852dd50e0ccSTony Hutter return (vdev_get_stats_ex(vd, vs, NULL)); 3853dd50e0ccSTony Hutter } 3854dd50e0ccSTony Hutter 3855fa94a07fSbrendan void 3856fa94a07fSbrendan vdev_clear_stats(vdev_t *vd) 3857fa94a07fSbrendan { 3858fa94a07fSbrendan mutex_enter(&vd->vdev_stat_lock); 3859fa94a07fSbrendan vd->vdev_stat.vs_space = 0; 3860fa94a07fSbrendan vd->vdev_stat.vs_dspace = 0; 3861fa94a07fSbrendan vd->vdev_stat.vs_alloc = 0; 3862fa94a07fSbrendan mutex_exit(&vd->vdev_stat_lock); 3863fa94a07fSbrendan } 3864fa94a07fSbrendan 38653f9d6ad7SLin Ling void 38663f9d6ad7SLin Ling vdev_scan_stat_init(vdev_t *vd) 38673f9d6ad7SLin Ling { 38683f9d6ad7SLin Ling vdev_stat_t *vs = &vd->vdev_stat; 38693f9d6ad7SLin Ling 38703f9d6ad7SLin Ling for (int c = 0; c < vd->vdev_children; c++) 38713f9d6ad7SLin Ling vdev_scan_stat_init(vd->vdev_child[c]); 38723f9d6ad7SLin Ling 38733f9d6ad7SLin Ling mutex_enter(&vd->vdev_stat_lock); 38743f9d6ad7SLin Ling vs->vs_scan_processed = 0; 38753f9d6ad7SLin Ling mutex_exit(&vd->vdev_stat_lock); 38763f9d6ad7SLin Ling } 38773f9d6ad7SLin Ling 3878fa9e4066Sahrens void 3879e14bb325SJeff Bonwick vdev_stat_update(zio_t *zio, uint64_t psize) 3880fa9e4066Sahrens { 38818ad4d6ddSJeff Bonwick spa_t *spa = zio->io_spa; 38828ad4d6ddSJeff Bonwick vdev_t *rvd = spa->spa_root_vdev; 3883e14bb325SJeff Bonwick vdev_t *vd = zio->io_vd ? zio->io_vd : rvd; 3884fa9e4066Sahrens vdev_t *pvd; 3885fa9e4066Sahrens uint64_t txg = zio->io_txg; 3886fa9e4066Sahrens vdev_stat_t *vs = &vd->vdev_stat; 3887dd50e0ccSTony Hutter vdev_stat_ex_t *vsx = &vd->vdev_stat_ex; 3888fa9e4066Sahrens zio_type_t type = zio->io_type; 3889fa9e4066Sahrens int flags = zio->io_flags; 3890fa9e4066Sahrens 3891e14bb325SJeff Bonwick /* 3892e14bb325SJeff Bonwick * If this i/o is a gang leader, it didn't do any actual work. 3893e14bb325SJeff Bonwick */ 3894e14bb325SJeff Bonwick if (zio->io_gang_tree) 3895e14bb325SJeff Bonwick return; 3896e14bb325SJeff Bonwick 3897fa9e4066Sahrens if (zio->io_error == 0) { 3898e14bb325SJeff Bonwick /* 3899e14bb325SJeff Bonwick * If this is a root i/o, don't count it -- we've already 3900e14bb325SJeff Bonwick * counted the top-level vdevs, and vdev_get_stats() will 3901e14bb325SJeff Bonwick * aggregate them when asked. This reduces contention on 3902e14bb325SJeff Bonwick * the root vdev_stat_lock and implicitly handles blocks 3903e14bb325SJeff Bonwick * that compress away to holes, for which there is no i/o. 3904e14bb325SJeff Bonwick * (Holes never create vdev children, so all the counters 3905e14bb325SJeff Bonwick * remain zero, which is what we want.) 3906e14bb325SJeff Bonwick * 3907e14bb325SJeff Bonwick * Note: this only applies to successful i/o (io_error == 0) 3908e14bb325SJeff Bonwick * because unlike i/o counts, errors are not additive. 3909e14bb325SJeff Bonwick * When reading a ditto block, for example, failure of 3910e14bb325SJeff Bonwick * one top-level vdev does not imply a root-level error. 3911e14bb325SJeff Bonwick */ 3912e14bb325SJeff Bonwick if (vd == rvd) 3913e14bb325SJeff Bonwick return; 3914e14bb325SJeff Bonwick 3915e14bb325SJeff Bonwick ASSERT(vd == zio->io_vd); 39168ad4d6ddSJeff Bonwick 39178ad4d6ddSJeff Bonwick if (flags & ZIO_FLAG_IO_BYPASS) 39188ad4d6ddSJeff Bonwick return; 39198ad4d6ddSJeff Bonwick 39208ad4d6ddSJeff Bonwick mutex_enter(&vd->vdev_stat_lock); 39218ad4d6ddSJeff Bonwick 3922e14bb325SJeff Bonwick if (flags & ZIO_FLAG_IO_REPAIR) { 392344ecc532SGeorge Wilson if (flags & ZIO_FLAG_SCAN_THREAD) { 39243f9d6ad7SLin Ling dsl_scan_phys_t *scn_phys = 39253f9d6ad7SLin Ling &spa->spa_dsl_pool->dp_scan->scn_phys; 39263f9d6ad7SLin Ling uint64_t *processed = &scn_phys->scn_processed; 39273f9d6ad7SLin Ling 39283f9d6ad7SLin Ling /* XXX cleanup? */ 39293f9d6ad7SLin Ling if (vd->vdev_ops->vdev_op_leaf) 39303f9d6ad7SLin Ling atomic_add_64(processed, psize); 39313f9d6ad7SLin Ling vs->vs_scan_processed += psize; 39323f9d6ad7SLin Ling } 39333f9d6ad7SLin Ling 39348ad4d6ddSJeff Bonwick if (flags & ZIO_FLAG_SELF_HEAL) 3935e14bb325SJeff Bonwick vs->vs_self_healed += psize; 3936fa9e4066Sahrens } 39378ad4d6ddSJeff Bonwick 3938084fd14fSBrian Behlendorf /* 3939dd50e0ccSTony Hutter * The bytes/ops/histograms are recorded at the leaf level and 3940dd50e0ccSTony Hutter * aggregated into the higher level vdevs in vdev_get_stats(). 3941084fd14fSBrian Behlendorf */ 3942dd50e0ccSTony Hutter if (vd->vdev_ops->vdev_op_leaf && 3943dd50e0ccSTony Hutter (zio->io_priority < ZIO_PRIORITY_NUM_QUEUEABLE)) { 3944dd50e0ccSTony Hutter zio_type_t vs_type = type; 3945dd50e0ccSTony Hutter 3946dd50e0ccSTony Hutter /* 3947dd50e0ccSTony Hutter * TRIM ops and bytes are reported to user space as 3948dd50e0ccSTony Hutter * ZIO_TYPE_IOCTL. This is done to preserve the 3949dd50e0ccSTony Hutter * vdev_stat_t structure layout for user space. 3950dd50e0ccSTony Hutter */ 3951dd50e0ccSTony Hutter if (type == ZIO_TYPE_TRIM) 3952dd50e0ccSTony Hutter vs_type = ZIO_TYPE_IOCTL; 3953dd50e0ccSTony Hutter 3954dd50e0ccSTony Hutter vs->vs_ops[vs_type]++; 3955dd50e0ccSTony Hutter vs->vs_bytes[vs_type] += psize; 3956dd50e0ccSTony Hutter 3957dd50e0ccSTony Hutter if (flags & ZIO_FLAG_DELEGATED) { 3958dd50e0ccSTony Hutter vsx->vsx_agg_histo[zio->io_priority] 3959dd50e0ccSTony Hutter [RQ_HISTO(zio->io_size)]++; 3960dd50e0ccSTony Hutter } else { 3961dd50e0ccSTony Hutter vsx->vsx_ind_histo[zio->io_priority] 3962dd50e0ccSTony Hutter [RQ_HISTO(zio->io_size)]++; 3963dd50e0ccSTony Hutter } 3964084fd14fSBrian Behlendorf 3965dd50e0ccSTony Hutter if (zio->io_delta && zio->io_delay) { 3966dd50e0ccSTony Hutter vsx->vsx_queue_histo[zio->io_priority] 3967dd50e0ccSTony Hutter [L_HISTO(zio->io_delta - zio->io_delay)]++; 3968dd50e0ccSTony Hutter vsx->vsx_disk_histo[type] 3969dd50e0ccSTony Hutter [L_HISTO(zio->io_delay)]++; 3970dd50e0ccSTony Hutter vsx->vsx_total_histo[type] 3971dd50e0ccSTony Hutter [L_HISTO(zio->io_delta)]++; 3972dd50e0ccSTony Hutter } 3973dd50e0ccSTony Hutter } 39748ad4d6ddSJeff Bonwick 39758ad4d6ddSJeff Bonwick mutex_exit(&vd->vdev_stat_lock); 3976fa9e4066Sahrens return; 3977fa9e4066Sahrens } 3978fa9e4066Sahrens 3979fa9e4066Sahrens if (flags & ZIO_FLAG_SPECULATIVE) 3980fa9e4066Sahrens return; 3981fa9e4066Sahrens 39828956713aSEric Schrock /* 39838956713aSEric Schrock * If this is an I/O error that is going to be retried, then ignore the 39848956713aSEric Schrock * error. Otherwise, the user may interpret B_FAILFAST I/O errors as 39858956713aSEric Schrock * hard errors, when in reality they can happen for any number of 39868956713aSEric Schrock * innocuous reasons (bus resets, MPxIO link failure, etc). 39878956713aSEric Schrock */ 39888956713aSEric Schrock if (zio->io_error == EIO && 39898956713aSEric Schrock !(zio->io_flags & ZIO_FLAG_IO_RETRY)) 39908956713aSEric Schrock return; 39918956713aSEric Schrock 39928f18d1faSGeorge Wilson /* 39938f18d1faSGeorge Wilson * Intent logs writes won't propagate their error to the root 39948f18d1faSGeorge Wilson * I/O so don't mark these types of failures as pool-level 39958f18d1faSGeorge Wilson * errors. 39968f18d1faSGeorge Wilson */ 39978f18d1faSGeorge Wilson if (zio->io_vd == NULL && (zio->io_flags & ZIO_FLAG_DONT_PROPAGATE)) 39988f18d1faSGeorge Wilson return; 39998f18d1faSGeorge Wilson 4000e14bb325SJeff Bonwick mutex_enter(&vd->vdev_stat_lock); 4001b47119fdSGeorge Wilson if (type == ZIO_TYPE_READ && !vdev_is_dead(vd)) { 4002e14bb325SJeff Bonwick if (zio->io_error == ECKSUM) 4003e14bb325SJeff Bonwick vs->vs_checksum_errors++; 4004e14bb325SJeff Bonwick else 4005e14bb325SJeff Bonwick vs->vs_read_errors++; 4006fa9e4066Sahrens } 4007b47119fdSGeorge Wilson if (type == ZIO_TYPE_WRITE && !vdev_is_dead(vd)) 4008e14bb325SJeff Bonwick vs->vs_write_errors++; 4009e14bb325SJeff Bonwick mutex_exit(&vd->vdev_stat_lock); 4010fa9e4066Sahrens 40115cabbc6bSPrashanth Sreenivasa if (spa->spa_load_state == SPA_LOAD_NONE && 40125cabbc6bSPrashanth Sreenivasa type == ZIO_TYPE_WRITE && txg != 0 && 40138ad4d6ddSJeff Bonwick (!(flags & ZIO_FLAG_IO_REPAIR) || 401444ecc532SGeorge Wilson (flags & ZIO_FLAG_SCAN_THREAD) || 4015b24ab676SJeff Bonwick spa->spa_claiming)) { 40168ad4d6ddSJeff Bonwick /* 4017b24ab676SJeff Bonwick * This is either a normal write (not a repair), or it's 4018b24ab676SJeff Bonwick * a repair induced by the scrub thread, or it's a repair 4019b24ab676SJeff Bonwick * made by zil_claim() during spa_load() in the first txg. 4020b24ab676SJeff Bonwick * In the normal case, we commit the DTL change in the same 4021b24ab676SJeff Bonwick * txg as the block was born. In the scrub-induced repair 4022b24ab676SJeff Bonwick * case, we know that scrubs run in first-pass syncing context, 4023b24ab676SJeff Bonwick * so we commit the DTL change in spa_syncing_txg(spa). 4024b24ab676SJeff Bonwick * In the zil_claim() case, we commit in spa_first_txg(spa). 40258ad4d6ddSJeff Bonwick * 40268ad4d6ddSJeff Bonwick * We currently do not make DTL entries for failed spontaneous 40278ad4d6ddSJeff Bonwick * self-healing writes triggered by normal (non-scrubbing) 40288ad4d6ddSJeff Bonwick * reads, because we have no transactional context in which to 40298ad4d6ddSJeff Bonwick * do so -- and it's not clear that it'd be desirable anyway. 40308ad4d6ddSJeff Bonwick */ 40318ad4d6ddSJeff Bonwick if (vd->vdev_ops->vdev_op_leaf) { 40328ad4d6ddSJeff Bonwick uint64_t commit_txg = txg; 403344ecc532SGeorge Wilson if (flags & ZIO_FLAG_SCAN_THREAD) { 40348ad4d6ddSJeff Bonwick ASSERT(flags & ZIO_FLAG_IO_REPAIR); 40358ad4d6ddSJeff Bonwick ASSERT(spa_sync_pass(spa) == 1); 40368ad4d6ddSJeff Bonwick vdev_dtl_dirty(vd, DTL_SCRUB, txg, 1); 4037b24ab676SJeff Bonwick commit_txg = spa_syncing_txg(spa); 4038b24ab676SJeff Bonwick } else if (spa->spa_claiming) { 4039b24ab676SJeff Bonwick ASSERT(flags & ZIO_FLAG_IO_REPAIR); 4040b24ab676SJeff Bonwick commit_txg = spa_first_txg(spa); 40418ad4d6ddSJeff Bonwick } 4042b24ab676SJeff Bonwick ASSERT(commit_txg >= spa_syncing_txg(spa)); 40438ad4d6ddSJeff Bonwick if (vdev_dtl_contains(vd, DTL_MISSING, txg, 1)) 4044fa9e4066Sahrens return; 40458ad4d6ddSJeff Bonwick for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent) 40468ad4d6ddSJeff Bonwick vdev_dtl_dirty(pvd, DTL_PARTIAL, txg, 1); 40478ad4d6ddSJeff Bonwick vdev_dirty(vd->vdev_top, VDD_DTL, vd, commit_txg); 4048fa9e4066Sahrens } 40498ad4d6ddSJeff Bonwick if (vd != rvd) 40508ad4d6ddSJeff Bonwick vdev_dtl_dirty(vd, DTL_MISSING, txg, 1); 4051fa9e4066Sahrens } 4052fa9e4066Sahrens } 4053fa9e4066Sahrens 4054663207adSDon Brady int64_t 4055663207adSDon Brady vdev_deflated_space(vdev_t *vd, int64_t space) 4056663207adSDon Brady { 4057663207adSDon Brady ASSERT((space & (SPA_MINBLOCKSIZE-1)) == 0); 4058663207adSDon Brady ASSERT(vd->vdev_deflate_ratio != 0 || vd->vdev_isl2cache); 4059663207adSDon Brady 4060663207adSDon Brady return ((space >> SPA_MINBLOCKSHIFT) * vd->vdev_deflate_ratio); 4061663207adSDon Brady } 4062663207adSDon Brady 4063fa9e4066Sahrens /* 4064084fd14fSBrian Behlendorf * Update the in-core space usage stats for this vdev, its metaslab class, 4065084fd14fSBrian Behlendorf * and the root vdev. 4066fa9e4066Sahrens */ 4067fa9e4066Sahrens void 4068b24ab676SJeff Bonwick vdev_space_update(vdev_t *vd, int64_t alloc_delta, int64_t defer_delta, 4069b24ab676SJeff Bonwick int64_t space_delta) 4070fa9e4066Sahrens { 4071663207adSDon Brady int64_t dspace_delta; 40728654d025Sperrin spa_t *spa = vd->vdev_spa; 40738654d025Sperrin vdev_t *rvd = spa->spa_root_vdev; 4074fa9e4066Sahrens 40758654d025Sperrin ASSERT(vd == vd->vdev_top); 407699653d4eSeschrock 40778654d025Sperrin /* 40788654d025Sperrin * Apply the inverse of the psize-to-asize (ie. RAID-Z) space-expansion 40798654d025Sperrin * factor. We must calculate this here and not at the root vdev 40808654d025Sperrin * because the root vdev's psize-to-asize is simply the max of its 40818654d025Sperrin * childrens', thus not accurate enough for us. 40828654d025Sperrin */ 4083663207adSDon Brady dspace_delta = vdev_deflated_space(vd, space_delta); 40848654d025Sperrin 40858654d025Sperrin mutex_enter(&vd->vdev_stat_lock); 40869740f25fSSerapheim Dimitropoulos /* ensure we won't underflow */ 40879740f25fSSerapheim Dimitropoulos if (alloc_delta < 0) { 40889740f25fSSerapheim Dimitropoulos ASSERT3U(vd->vdev_stat.vs_alloc, >=, -alloc_delta); 40899740f25fSSerapheim Dimitropoulos } 40909740f25fSSerapheim Dimitropoulos 40918654d025Sperrin vd->vdev_stat.vs_alloc += alloc_delta; 4092b24ab676SJeff Bonwick vd->vdev_stat.vs_space += space_delta; 40938654d025Sperrin vd->vdev_stat.vs_dspace += dspace_delta; 40948654d025Sperrin mutex_exit(&vd->vdev_stat_lock); 40958654d025Sperrin 4096663207adSDon Brady /* every class but log contributes to root space stats */ 4097663207adSDon Brady if (vd->vdev_mg != NULL && !vd->vdev_islog) { 40989740f25fSSerapheim Dimitropoulos ASSERT(!vd->vdev_isl2cache); 4099fa94a07fSbrendan mutex_enter(&rvd->vdev_stat_lock); 4100fa94a07fSbrendan rvd->vdev_stat.vs_alloc += alloc_delta; 4101b24ab676SJeff Bonwick rvd->vdev_stat.vs_space += space_delta; 4102fa94a07fSbrendan rvd->vdev_stat.vs_dspace += dspace_delta; 4103fa94a07fSbrendan mutex_exit(&rvd->vdev_stat_lock); 4104fa94a07fSbrendan } 4105663207adSDon Brady /* Note: metaslab_class_space_update moved to metaslab_space_update */ 4106fa9e4066Sahrens } 4107fa9e4066Sahrens 4108fa9e4066Sahrens /* 4109fa9e4066Sahrens * Mark a top-level vdev's config as dirty, placing it on the dirty list 4110fa9e4066Sahrens * so that it will be written out next time the vdev configuration is synced. 4111fa9e4066Sahrens * If the root vdev is specified (vdev_top == NULL), dirty all top-level vdevs. 4112fa9e4066Sahrens */ 4113fa9e4066Sahrens void 4114fa9e4066Sahrens vdev_config_dirty(vdev_t *vd) 4115fa9e4066Sahrens { 4116fa9e4066Sahrens spa_t *spa = vd->vdev_spa; 4117fa9e4066Sahrens vdev_t *rvd = spa->spa_root_vdev; 4118fa9e4066Sahrens int c; 4119fa9e4066Sahrens 4120f9af39baSGeorge Wilson ASSERT(spa_writeable(spa)); 4121f9af39baSGeorge Wilson 4122c5904d13Seschrock /* 41236809eb4eSEric Schrock * If this is an aux vdev (as with l2cache and spare devices), then we 41246809eb4eSEric Schrock * update the vdev config manually and set the sync flag. 4125c5904d13Seschrock */ 4126c5904d13Seschrock if (vd->vdev_aux != NULL) { 4127c5904d13Seschrock spa_aux_vdev_t *sav = vd->vdev_aux; 4128c5904d13Seschrock nvlist_t **aux; 4129c5904d13Seschrock uint_t naux; 4130c5904d13Seschrock 4131c5904d13Seschrock for (c = 0; c < sav->sav_count; c++) { 4132c5904d13Seschrock if (sav->sav_vdevs[c] == vd) 4133c5904d13Seschrock break; 4134c5904d13Seschrock } 4135c5904d13Seschrock 4136e14bb325SJeff Bonwick if (c == sav->sav_count) { 4137e14bb325SJeff Bonwick /* 4138e14bb325SJeff Bonwick * We're being removed. There's nothing more to do. 4139e14bb325SJeff Bonwick */ 4140e14bb325SJeff Bonwick ASSERT(sav->sav_sync == B_TRUE); 4141e14bb325SJeff Bonwick return; 4142e14bb325SJeff Bonwick } 4143e14bb325SJeff Bonwick 4144c5904d13Seschrock sav->sav_sync = B_TRUE; 4145c5904d13Seschrock 41466809eb4eSEric Schrock if (nvlist_lookup_nvlist_array(sav->sav_config, 41476809eb4eSEric Schrock ZPOOL_CONFIG_L2CACHE, &aux, &naux) != 0) { 41486809eb4eSEric Schrock VERIFY(nvlist_lookup_nvlist_array(sav->sav_config, 41496809eb4eSEric Schrock ZPOOL_CONFIG_SPARES, &aux, &naux) == 0); 41506809eb4eSEric Schrock } 4151c5904d13Seschrock 4152c5904d13Seschrock ASSERT(c < naux); 4153c5904d13Seschrock 4154c5904d13Seschrock /* 4155c5904d13Seschrock * Setting the nvlist in the middle if the array is a little 4156c5904d13Seschrock * sketchy, but it will work. 4157c5904d13Seschrock */ 4158c5904d13Seschrock nvlist_free(aux[c]); 41593f9d6ad7SLin Ling aux[c] = vdev_config_generate(spa, vd, B_TRUE, 0); 4160c5904d13Seschrock 4161c5904d13Seschrock return; 4162c5904d13Seschrock } 4163c5904d13Seschrock 41645dabedeeSbonwick /* 4165e14bb325SJeff Bonwick * The dirty list is protected by the SCL_CONFIG lock. The caller 4166e14bb325SJeff Bonwick * must either hold SCL_CONFIG as writer, or must be the sync thread 4167e14bb325SJeff Bonwick * (which holds SCL_CONFIG as reader). There's only one sync thread, 41685dabedeeSbonwick * so this is sufficient to ensure mutual exclusion. 41695dabedeeSbonwick */ 4170e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || 4171e14bb325SJeff Bonwick (dsl_pool_sync_context(spa_get_dsl(spa)) && 4172e14bb325SJeff Bonwick spa_config_held(spa, SCL_CONFIG, RW_READER))); 41735dabedeeSbonwick 4174fa9e4066Sahrens if (vd == rvd) { 4175fa9e4066Sahrens for (c = 0; c < rvd->vdev_children; c++) 4176fa9e4066Sahrens vdev_config_dirty(rvd->vdev_child[c]); 4177fa9e4066Sahrens } else { 4178fa9e4066Sahrens ASSERT(vd == vd->vdev_top); 4179fa9e4066Sahrens 418088ecc943SGeorge Wilson if (!list_link_active(&vd->vdev_config_dirty_node) && 41815cabbc6bSPrashanth Sreenivasa vdev_is_concrete(vd)) { 4182e14bb325SJeff Bonwick list_insert_head(&spa->spa_config_dirty_list, vd); 41835cabbc6bSPrashanth Sreenivasa } 4184fa9e4066Sahrens } 4185fa9e4066Sahrens } 4186fa9e4066Sahrens 4187fa9e4066Sahrens void 4188fa9e4066Sahrens vdev_config_clean(vdev_t *vd) 4189fa9e4066Sahrens { 41905dabedeeSbonwick spa_t *spa = vd->vdev_spa; 41915dabedeeSbonwick 4192e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_CONFIG, RW_WRITER) || 4193e14bb325SJeff Bonwick (dsl_pool_sync_context(spa_get_dsl(spa)) && 4194e14bb325SJeff Bonwick spa_config_held(spa, SCL_CONFIG, RW_READER))); 41955dabedeeSbonwick 4196e14bb325SJeff Bonwick ASSERT(list_link_active(&vd->vdev_config_dirty_node)); 4197e14bb325SJeff Bonwick list_remove(&spa->spa_config_dirty_list, vd); 4198e14bb325SJeff Bonwick } 4199e14bb325SJeff Bonwick 4200e14bb325SJeff Bonwick /* 4201e14bb325SJeff Bonwick * Mark a top-level vdev's state as dirty, so that the next pass of 4202e14bb325SJeff Bonwick * spa_sync() can convert this into vdev_config_dirty(). We distinguish 4203e14bb325SJeff Bonwick * the state changes from larger config changes because they require 4204e14bb325SJeff Bonwick * much less locking, and are often needed for administrative actions. 4205e14bb325SJeff Bonwick */ 4206e14bb325SJeff Bonwick void 4207e14bb325SJeff Bonwick vdev_state_dirty(vdev_t *vd) 4208e14bb325SJeff Bonwick { 4209e14bb325SJeff Bonwick spa_t *spa = vd->vdev_spa; 4210e14bb325SJeff Bonwick 4211f9af39baSGeorge Wilson ASSERT(spa_writeable(spa)); 4212e14bb325SJeff Bonwick ASSERT(vd == vd->vdev_top); 4213e14bb325SJeff Bonwick 4214e14bb325SJeff Bonwick /* 4215e14bb325SJeff Bonwick * The state list is protected by the SCL_STATE lock. The caller 4216e14bb325SJeff Bonwick * must either hold SCL_STATE as writer, or must be the sync thread 4217e14bb325SJeff Bonwick * (which holds SCL_STATE as reader). There's only one sync thread, 4218e14bb325SJeff Bonwick * so this is sufficient to ensure mutual exclusion. 4219e14bb325SJeff Bonwick */ 4220e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || 4221e14bb325SJeff Bonwick (dsl_pool_sync_context(spa_get_dsl(spa)) && 4222e14bb325SJeff Bonwick spa_config_held(spa, SCL_STATE, RW_READER))); 4223e14bb325SJeff Bonwick 42245cabbc6bSPrashanth Sreenivasa if (!list_link_active(&vd->vdev_state_dirty_node) && 42255cabbc6bSPrashanth Sreenivasa vdev_is_concrete(vd)) 4226e14bb325SJeff Bonwick list_insert_head(&spa->spa_state_dirty_list, vd); 4227e14bb325SJeff Bonwick } 4228e14bb325SJeff Bonwick 4229e14bb325SJeff Bonwick void 4230e14bb325SJeff Bonwick vdev_state_clean(vdev_t *vd) 4231e14bb325SJeff Bonwick { 4232e14bb325SJeff Bonwick spa_t *spa = vd->vdev_spa; 4233e14bb325SJeff Bonwick 4234e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_STATE, RW_WRITER) || 4235e14bb325SJeff Bonwick (dsl_pool_sync_context(spa_get_dsl(spa)) && 4236e14bb325SJeff Bonwick spa_config_held(spa, SCL_STATE, RW_READER))); 4237e14bb325SJeff Bonwick 4238e14bb325SJeff Bonwick ASSERT(list_link_active(&vd->vdev_state_dirty_node)); 4239e14bb325SJeff Bonwick list_remove(&spa->spa_state_dirty_list, vd); 4240fa9e4066Sahrens } 4241fa9e4066Sahrens 424232b87932Sek /* 424332b87932Sek * Propagate vdev state up from children to parent. 424432b87932Sek */ 424544cd46caSbillm void 424644cd46caSbillm vdev_propagate_state(vdev_t *vd) 424744cd46caSbillm { 42488ad4d6ddSJeff Bonwick spa_t *spa = vd->vdev_spa; 42498ad4d6ddSJeff Bonwick vdev_t *rvd = spa->spa_root_vdev; 425044cd46caSbillm int degraded = 0, faulted = 0; 425144cd46caSbillm int corrupted = 0; 425244cd46caSbillm vdev_t *child; 425344cd46caSbillm 42543d7072f8Seschrock if (vd->vdev_children > 0) { 4255573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) { 42563d7072f8Seschrock child = vd->vdev_child[c]; 425751ece835Seschrock 425888ecc943SGeorge Wilson /* 42595cabbc6bSPrashanth Sreenivasa * Don't factor holes or indirect vdevs into the 42605cabbc6bSPrashanth Sreenivasa * decision. 426188ecc943SGeorge Wilson */ 42625cabbc6bSPrashanth Sreenivasa if (!vdev_is_concrete(child)) 426388ecc943SGeorge Wilson continue; 426488ecc943SGeorge Wilson 4265e14bb325SJeff Bonwick if (!vdev_readable(child) || 42668ad4d6ddSJeff Bonwick (!vdev_writeable(child) && spa_writeable(spa))) { 426751ece835Seschrock /* 426851ece835Seschrock * Root special: if there is a top-level log 426951ece835Seschrock * device, treat the root vdev as if it were 427051ece835Seschrock * degraded. 427151ece835Seschrock */ 427251ece835Seschrock if (child->vdev_islog && vd == rvd) 427351ece835Seschrock degraded++; 427451ece835Seschrock else 427551ece835Seschrock faulted++; 427651ece835Seschrock } else if (child->vdev_state <= VDEV_STATE_DEGRADED) { 42773d7072f8Seschrock degraded++; 427851ece835Seschrock } 427944cd46caSbillm 42803d7072f8Seschrock if (child->vdev_stat.vs_aux == VDEV_AUX_CORRUPT_DATA) 42813d7072f8Seschrock corrupted++; 42823d7072f8Seschrock } 428344cd46caSbillm 42843d7072f8Seschrock vd->vdev_ops->vdev_op_state_change(vd, faulted, degraded); 42853d7072f8Seschrock 42863d7072f8Seschrock /* 4287e14bb325SJeff Bonwick * Root special: if there is a top-level vdev that cannot be 42883d7072f8Seschrock * opened due to corrupted metadata, then propagate the root 42893d7072f8Seschrock * vdev's aux state as 'corrupt' rather than 'insufficient 42903d7072f8Seschrock * replicas'. 42913d7072f8Seschrock */ 42923d7072f8Seschrock if (corrupted && vd == rvd && 42933d7072f8Seschrock rvd->vdev_state == VDEV_STATE_CANT_OPEN) 42943d7072f8Seschrock vdev_set_state(rvd, B_FALSE, VDEV_STATE_CANT_OPEN, 42953d7072f8Seschrock VDEV_AUX_CORRUPT_DATA); 42963d7072f8Seschrock } 42973d7072f8Seschrock 429851ece835Seschrock if (vd->vdev_parent) 42993d7072f8Seschrock vdev_propagate_state(vd->vdev_parent); 430044cd46caSbillm } 430144cd46caSbillm 4302fa9e4066Sahrens /* 4303ea8dc4b6Seschrock * Set a vdev's state. If this is during an open, we don't update the parent 4304ea8dc4b6Seschrock * state, because we're in the process of opening children depth-first. 4305ea8dc4b6Seschrock * Otherwise, we propagate the change to the parent. 4306ea8dc4b6Seschrock * 4307ea8dc4b6Seschrock * If this routine places a device in a faulted state, an appropriate ereport is 4308ea8dc4b6Seschrock * generated. 4309fa9e4066Sahrens */ 4310fa9e4066Sahrens void 4311ea8dc4b6Seschrock vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, vdev_aux_t aux) 4312fa9e4066Sahrens { 4313560e6e96Seschrock uint64_t save_state; 4314c5904d13Seschrock spa_t *spa = vd->vdev_spa; 4315ea8dc4b6Seschrock 4316ea8dc4b6Seschrock if (state == vd->vdev_state) { 4317ea8dc4b6Seschrock vd->vdev_stat.vs_aux = aux; 4318fa9e4066Sahrens return; 4319ea8dc4b6Seschrock } 4320ea8dc4b6Seschrock 4321560e6e96Seschrock save_state = vd->vdev_state; 4322fa9e4066Sahrens 4323fa9e4066Sahrens vd->vdev_state = state; 4324fa9e4066Sahrens vd->vdev_stat.vs_aux = aux; 4325fa9e4066Sahrens 43263d7072f8Seschrock /* 43273d7072f8Seschrock * If we are setting the vdev state to anything but an open state, then 432898d1cbfeSGeorge Wilson * always close the underlying device unless the device has requested 432998d1cbfeSGeorge Wilson * a delayed close (i.e. we're about to remove or fault the device). 433098d1cbfeSGeorge Wilson * Otherwise, we keep accessible but invalid devices open forever. 433198d1cbfeSGeorge Wilson * We don't call vdev_close() itself, because that implies some extra 433298d1cbfeSGeorge Wilson * checks (offline, etc) that we don't want here. This is limited to 433398d1cbfeSGeorge Wilson * leaf devices, because otherwise closing the device will affect other 433498d1cbfeSGeorge Wilson * children. 433598d1cbfeSGeorge Wilson */ 433698d1cbfeSGeorge Wilson if (!vd->vdev_delayed_close && vdev_is_dead(vd) && 433798d1cbfeSGeorge Wilson vd->vdev_ops->vdev_op_leaf) 43383d7072f8Seschrock vd->vdev_ops->vdev_op_close(vd); 43393d7072f8Seschrock 4340069f55e2SEric Schrock /* 4341069f55e2SEric Schrock * If we have brought this vdev back into service, we need 4342069f55e2SEric Schrock * to notify fmd so that it can gracefully repair any outstanding 4343069f55e2SEric Schrock * cases due to a missing device. We do this in all cases, even those 4344069f55e2SEric Schrock * that probably don't correlate to a repaired fault. This is sure to 4345069f55e2SEric Schrock * catch all cases, and we let the zfs-retire agent sort it out. If 4346069f55e2SEric Schrock * this is a transient state it's OK, as the retire agent will 4347069f55e2SEric Schrock * double-check the state of the vdev before repairing it. 4348069f55e2SEric Schrock */ 4349069f55e2SEric Schrock if (state == VDEV_STATE_HEALTHY && vd->vdev_ops->vdev_op_leaf && 4350069f55e2SEric Schrock vd->vdev_prevstate != state) 4351069f55e2SEric Schrock zfs_post_state_change(spa, vd); 4352069f55e2SEric Schrock 43533d7072f8Seschrock if (vd->vdev_removed && 43543d7072f8Seschrock state == VDEV_STATE_CANT_OPEN && 43553d7072f8Seschrock (aux == VDEV_AUX_OPEN_FAILED || vd->vdev_checkremove)) { 43563d7072f8Seschrock /* 43573d7072f8Seschrock * If the previous state is set to VDEV_STATE_REMOVED, then this 43583d7072f8Seschrock * device was previously marked removed and someone attempted to 43593d7072f8Seschrock * reopen it. If this failed due to a nonexistent device, then 43603d7072f8Seschrock * keep the device in the REMOVED state. We also let this be if 43613d7072f8Seschrock * it is one of our special test online cases, which is only 43623d7072f8Seschrock * attempting to online the device and shouldn't generate an FMA 43633d7072f8Seschrock * fault. 43643d7072f8Seschrock */ 43653d7072f8Seschrock vd->vdev_state = VDEV_STATE_REMOVED; 43663d7072f8Seschrock vd->vdev_stat.vs_aux = VDEV_AUX_NONE; 43673d7072f8Seschrock } else if (state == VDEV_STATE_REMOVED) { 43683d7072f8Seschrock vd->vdev_removed = B_TRUE; 43693d7072f8Seschrock } else if (state == VDEV_STATE_CANT_OPEN) { 4370ea8dc4b6Seschrock /* 4371cb04b873SMark J Musante * If we fail to open a vdev during an import or recovery, we 4372cb04b873SMark J Musante * mark it as "not available", which signifies that it was 4373cb04b873SMark J Musante * never there to begin with. Failure to open such a device 4374cb04b873SMark J Musante * is not considered an error. 4375ea8dc4b6Seschrock */ 4376cb04b873SMark J Musante if ((spa_load_state(spa) == SPA_LOAD_IMPORT || 4377cb04b873SMark J Musante spa_load_state(spa) == SPA_LOAD_RECOVER) && 4378560e6e96Seschrock vd->vdev_ops->vdev_op_leaf) 4379560e6e96Seschrock vd->vdev_not_present = 1; 4380560e6e96Seschrock 4381560e6e96Seschrock /* 4382560e6e96Seschrock * Post the appropriate ereport. If the 'prevstate' field is 4383560e6e96Seschrock * set to something other than VDEV_STATE_UNKNOWN, it indicates 4384560e6e96Seschrock * that this is part of a vdev_reopen(). In this case, we don't 4385560e6e96Seschrock * want to post the ereport if the device was already in the 4386560e6e96Seschrock * CANT_OPEN state beforehand. 43873d7072f8Seschrock * 43883d7072f8Seschrock * If the 'checkremove' flag is set, then this is an attempt to 43893d7072f8Seschrock * online the device in response to an insertion event. If we 43903d7072f8Seschrock * hit this case, then we have detected an insertion event for a 43913d7072f8Seschrock * faulted or offline device that wasn't in the removed state. 43923d7072f8Seschrock * In this scenario, we don't post an ereport because we are 43933d7072f8Seschrock * about to replace the device, or attempt an online with 43943d7072f8Seschrock * vdev_forcefault, which will generate the fault for us. 4395560e6e96Seschrock */ 43963d7072f8Seschrock if ((vd->vdev_prevstate != state || vd->vdev_forcefault) && 43973d7072f8Seschrock !vd->vdev_not_present && !vd->vdev_checkremove && 4398c5904d13Seschrock vd != spa->spa_root_vdev) { 4399ea8dc4b6Seschrock const char *class; 4400ea8dc4b6Seschrock 4401ea8dc4b6Seschrock switch (aux) { 4402ea8dc4b6Seschrock case VDEV_AUX_OPEN_FAILED: 4403ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_OPEN_FAILED; 4404ea8dc4b6Seschrock break; 4405ea8dc4b6Seschrock case VDEV_AUX_CORRUPT_DATA: 4406ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_CORRUPT_DATA; 4407ea8dc4b6Seschrock break; 4408ea8dc4b6Seschrock case VDEV_AUX_NO_REPLICAS: 4409ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_NO_REPLICAS; 4410ea8dc4b6Seschrock break; 4411ea8dc4b6Seschrock case VDEV_AUX_BAD_GUID_SUM: 4412ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_BAD_GUID_SUM; 4413ea8dc4b6Seschrock break; 4414ea8dc4b6Seschrock case VDEV_AUX_TOO_SMALL: 4415ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_TOO_SMALL; 4416ea8dc4b6Seschrock break; 4417ea8dc4b6Seschrock case VDEV_AUX_BAD_LABEL: 4418ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_BAD_LABEL; 4419ea8dc4b6Seschrock break; 44205711d393Sloli case VDEV_AUX_BAD_ASHIFT: 44215711d393Sloli class = FM_EREPORT_ZFS_DEVICE_BAD_ASHIFT; 44225711d393Sloli break; 4423ea8dc4b6Seschrock default: 4424ea8dc4b6Seschrock class = FM_EREPORT_ZFS_DEVICE_UNKNOWN; 4425ea8dc4b6Seschrock } 4426ea8dc4b6Seschrock 44279b088140SToomas Soome (void) zfs_ereport_post(class, spa, vd, NULL, NULL, 4428eb633035STom Caputi save_state, 0); 4429ea8dc4b6Seschrock } 4430ea8dc4b6Seschrock 44313d7072f8Seschrock /* Erase any notion of persistent removed state */ 44323d7072f8Seschrock vd->vdev_removed = B_FALSE; 44333d7072f8Seschrock } else { 44343d7072f8Seschrock vd->vdev_removed = B_FALSE; 44353d7072f8Seschrock } 4436ea8dc4b6Seschrock 44378b33d774STim Haley if (!isopen && vd->vdev_parent) 44388b33d774STim Haley vdev_propagate_state(vd->vdev_parent); 4439fa9e4066Sahrens } 444015e6edf1Sgw 44416f793812SPavel Zakharov boolean_t 44426f793812SPavel Zakharov vdev_children_are_offline(vdev_t *vd) 44436f793812SPavel Zakharov { 44446f793812SPavel Zakharov ASSERT(!vd->vdev_ops->vdev_op_leaf); 44456f793812SPavel Zakharov 44466f793812SPavel Zakharov for (uint64_t i = 0; i < vd->vdev_children; i++) { 44476f793812SPavel Zakharov if (vd->vdev_child[i]->vdev_state != VDEV_STATE_OFFLINE) 44486f793812SPavel Zakharov return (B_FALSE); 44496f793812SPavel Zakharov } 44506f793812SPavel Zakharov 44516f793812SPavel Zakharov return (B_TRUE); 44526f793812SPavel Zakharov } 44536f793812SPavel Zakharov 445415e6edf1Sgw /* 445515e6edf1Sgw * Check the vdev configuration to ensure that it's capable of supporting 4456c8811bd3SToomas Soome * a root pool. We do not support partial configuration. 445715e6edf1Sgw */ 445815e6edf1Sgw boolean_t 445915e6edf1Sgw vdev_is_bootable(vdev_t *vd) 446015e6edf1Sgw { 446115e6edf1Sgw if (!vd->vdev_ops->vdev_op_leaf) { 446215e6edf1Sgw char *vdev_type = vd->vdev_ops->vdev_op_type; 446315e6edf1Sgw 44645623f66bSPatrick Mooney if (strcmp(vdev_type, VDEV_TYPE_MISSING) == 0) { 446515e6edf1Sgw return (B_FALSE); 446615e6edf1Sgw } 446715e6edf1Sgw } 446815e6edf1Sgw 4469573ca77eSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) { 447015e6edf1Sgw if (!vdev_is_bootable(vd->vdev_child[c])) 447115e6edf1Sgw return (B_FALSE); 447215e6edf1Sgw } 447315e6edf1Sgw return (B_TRUE); 447415e6edf1Sgw } 4475e6ca193dSGeorge Wilson 44765cabbc6bSPrashanth Sreenivasa boolean_t 44775cabbc6bSPrashanth Sreenivasa vdev_is_concrete(vdev_t *vd) 44785cabbc6bSPrashanth Sreenivasa { 44795cabbc6bSPrashanth Sreenivasa vdev_ops_t *ops = vd->vdev_ops; 44805cabbc6bSPrashanth Sreenivasa if (ops == &vdev_indirect_ops || ops == &vdev_hole_ops || 44815cabbc6bSPrashanth Sreenivasa ops == &vdev_missing_ops || ops == &vdev_root_ops) { 44825cabbc6bSPrashanth Sreenivasa return (B_FALSE); 44835cabbc6bSPrashanth Sreenivasa } else { 44845cabbc6bSPrashanth Sreenivasa return (B_TRUE); 44855cabbc6bSPrashanth Sreenivasa } 44865cabbc6bSPrashanth Sreenivasa } 44875cabbc6bSPrashanth Sreenivasa 44884b964adaSGeorge Wilson /* 44894b964adaSGeorge Wilson * Determine if a log device has valid content. If the vdev was 44904b964adaSGeorge Wilson * removed or faulted in the MOS config then we know that 44914b964adaSGeorge Wilson * the content on the log device has already been written to the pool. 44924b964adaSGeorge Wilson */ 44934b964adaSGeorge Wilson boolean_t 44944b964adaSGeorge Wilson vdev_log_state_valid(vdev_t *vd) 44954b964adaSGeorge Wilson { 44964b964adaSGeorge Wilson if (vd->vdev_ops->vdev_op_leaf && !vd->vdev_faulted && 44974b964adaSGeorge Wilson !vd->vdev_removed) 44984b964adaSGeorge Wilson return (B_TRUE); 44994b964adaSGeorge Wilson 45004b964adaSGeorge Wilson for (int c = 0; c < vd->vdev_children; c++) 45014b964adaSGeorge Wilson if (vdev_log_state_valid(vd->vdev_child[c])) 45024b964adaSGeorge Wilson return (B_TRUE); 45034b964adaSGeorge Wilson 45044b964adaSGeorge Wilson return (B_FALSE); 45054b964adaSGeorge Wilson } 45064b964adaSGeorge Wilson 4507573ca77eSGeorge Wilson /* 4508573ca77eSGeorge Wilson * Expand a vdev if possible. 4509573ca77eSGeorge Wilson */ 4510573ca77eSGeorge Wilson void 4511573ca77eSGeorge Wilson vdev_expand(vdev_t *vd, uint64_t txg) 4512573ca77eSGeorge Wilson { 4513573ca77eSGeorge Wilson ASSERT(vd->vdev_top == vd); 4514573ca77eSGeorge Wilson ASSERT(spa_config_held(vd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL); 451511f6a968SSerapheim Dimitropoulos ASSERT(vdev_is_concrete(vd)); 4516573ca77eSGeorge Wilson 45175cabbc6bSPrashanth Sreenivasa vdev_set_deflate_ratio(vd); 45185cabbc6bSPrashanth Sreenivasa 4519663207adSDon Brady if ((vd->vdev_asize >> vd->vdev_ms_shift) > vd->vdev_ms_count && 4520663207adSDon Brady vdev_is_concrete(vd)) { 4521663207adSDon Brady vdev_metaslab_group_create(vd); 4522573ca77eSGeorge Wilson VERIFY(vdev_metaslab_init(vd, txg) == 0); 4523573ca77eSGeorge Wilson vdev_config_dirty(vd); 4524573ca77eSGeorge Wilson } 4525573ca77eSGeorge Wilson } 45261195e687SMark J Musante 45271195e687SMark J Musante /* 45281195e687SMark J Musante * Split a vdev. 45291195e687SMark J Musante */ 45301195e687SMark J Musante void 45311195e687SMark J Musante vdev_split(vdev_t *vd) 45321195e687SMark J Musante { 45331195e687SMark J Musante vdev_t *cvd, *pvd = vd->vdev_parent; 45341195e687SMark J Musante 45351195e687SMark J Musante vdev_remove_child(pvd, vd); 45361195e687SMark J Musante vdev_compact_children(pvd); 45371195e687SMark J Musante 45381195e687SMark J Musante cvd = pvd->vdev_child[0]; 45391195e687SMark J Musante if (pvd->vdev_children == 1) { 45401195e687SMark J Musante vdev_remove_parent(cvd); 45411195e687SMark J Musante cvd->vdev_splitting = B_TRUE; 45421195e687SMark J Musante } 45431195e687SMark J Musante vdev_propagate_state(cvd); 45441195e687SMark J Musante } 4545283b8460SGeorge.Wilson 4546283b8460SGeorge.Wilson void 4547283b8460SGeorge.Wilson vdev_deadman(vdev_t *vd) 4548283b8460SGeorge.Wilson { 4549283b8460SGeorge.Wilson for (int c = 0; c < vd->vdev_children; c++) { 4550283b8460SGeorge.Wilson vdev_t *cvd = vd->vdev_child[c]; 4551283b8460SGeorge.Wilson 4552283b8460SGeorge.Wilson vdev_deadman(cvd); 4553283b8460SGeorge.Wilson } 4554283b8460SGeorge.Wilson 4555283b8460SGeorge.Wilson if (vd->vdev_ops->vdev_op_leaf) { 4556283b8460SGeorge.Wilson vdev_queue_t *vq = &vd->vdev_queue; 4557283b8460SGeorge.Wilson 4558283b8460SGeorge.Wilson mutex_enter(&vq->vq_lock); 455969962b56SMatthew Ahrens if (avl_numnodes(&vq->vq_active_tree) > 0) { 4560283b8460SGeorge.Wilson spa_t *spa = vd->vdev_spa; 4561283b8460SGeorge.Wilson zio_t *fio; 4562283b8460SGeorge.Wilson uint64_t delta; 4563283b8460SGeorge.Wilson 4564283b8460SGeorge.Wilson /* 4565283b8460SGeorge.Wilson * Look at the head of all the pending queues, 4566283b8460SGeorge.Wilson * if any I/O has been outstanding for longer than 4567283b8460SGeorge.Wilson * the spa_deadman_synctime we panic the system. 4568283b8460SGeorge.Wilson */ 456969962b56SMatthew Ahrens fio = avl_first(&vq->vq_active_tree); 4570c55e05cbSMatthew Ahrens delta = gethrtime() - fio->io_timestamp; 4571c55e05cbSMatthew Ahrens if (delta > spa_deadman_synctime(spa)) { 45723ee8c80cSPavel Zakharov vdev_dbgmsg(vd, "SLOW IO: zio timestamp " 45733ee8c80cSPavel Zakharov "%lluns, delta %lluns, last io %lluns", 45743ee8c80cSPavel Zakharov fio->io_timestamp, (u_longlong_t)delta, 4575283b8460SGeorge.Wilson vq->vq_io_complete_ts); 4576283b8460SGeorge.Wilson fm_panic("I/O to pool '%s' appears to be " 4577283b8460SGeorge.Wilson "hung.", spa_name(spa)); 4578283b8460SGeorge.Wilson } 4579283b8460SGeorge.Wilson } 4580283b8460SGeorge.Wilson mutex_exit(&vq->vq_lock); 4581283b8460SGeorge.Wilson } 4582283b8460SGeorge.Wilson } 4583e4c795beSTom Caputi 4584e4c795beSTom Caputi void 45850c06d385Sjwpoduska vdev_defer_resilver(vdev_t *vd) 4586e4c795beSTom Caputi { 45870c06d385Sjwpoduska ASSERT(vd->vdev_ops->vdev_op_leaf); 4588e4c795beSTom Caputi 45890c06d385Sjwpoduska vd->vdev_resilver_deferred = B_TRUE; 45900c06d385Sjwpoduska vd->vdev_spa->spa_resilver_deferred = B_TRUE; 45910c06d385Sjwpoduska } 45920c06d385Sjwpoduska 45930c06d385Sjwpoduska /* 45940c06d385Sjwpoduska * Clears the resilver deferred flag on all leaf devs under vd. Returns 45950c06d385Sjwpoduska * B_TRUE if we have devices that need to be resilvered and are available to 45960c06d385Sjwpoduska * accept resilver I/Os. 45970c06d385Sjwpoduska */ 45980c06d385Sjwpoduska boolean_t 45990c06d385Sjwpoduska vdev_clear_resilver_deferred(vdev_t *vd, dmu_tx_t *tx) 46000c06d385Sjwpoduska { 46010c06d385Sjwpoduska boolean_t resilver_needed = B_FALSE; 46020c06d385Sjwpoduska spa_t *spa = vd->vdev_spa; 46030c06d385Sjwpoduska 46040c06d385Sjwpoduska for (int c = 0; c < vd->vdev_children; c++) { 46050c06d385Sjwpoduska vdev_t *cvd = vd->vdev_child[c]; 46060c06d385Sjwpoduska resilver_needed |= vdev_clear_resilver_deferred(cvd, tx); 4607e4c795beSTom Caputi } 4608e4c795beSTom Caputi 46090c06d385Sjwpoduska if (vd == spa->spa_root_vdev && 46100c06d385Sjwpoduska spa_feature_is_active(spa, SPA_FEATURE_RESILVER_DEFER)) { 46110c06d385Sjwpoduska spa_feature_decr(spa, SPA_FEATURE_RESILVER_DEFER, tx); 46120c06d385Sjwpoduska vdev_config_dirty(vd); 46130c06d385Sjwpoduska spa->spa_resilver_deferred = B_FALSE; 46140c06d385Sjwpoduska return (resilver_needed); 46150c06d385Sjwpoduska } 46160c06d385Sjwpoduska 46170c06d385Sjwpoduska if (!vdev_is_concrete(vd) || vd->vdev_aux || 46180c06d385Sjwpoduska !vd->vdev_ops->vdev_op_leaf) 46190c06d385Sjwpoduska return (resilver_needed); 46200c06d385Sjwpoduska 46210c06d385Sjwpoduska vd->vdev_resilver_deferred = B_FALSE; 46220c06d385Sjwpoduska 46230c06d385Sjwpoduska return (!vdev_is_dead(vd) && !vd->vdev_offline && 46240c06d385Sjwpoduska vdev_resilver_needed(vd, NULL, NULL)); 4625e4c795beSTom Caputi } 4626084fd14fSBrian Behlendorf 4627084fd14fSBrian Behlendorf /* 4628084fd14fSBrian Behlendorf * Translate a logical range to the physical range for the specified vdev_t. 4629084fd14fSBrian Behlendorf * This function is initially called with a leaf vdev and will walk each 4630084fd14fSBrian Behlendorf * parent vdev until it reaches a top-level vdev. Once the top-level is 4631084fd14fSBrian Behlendorf * reached the physical range is initialized and the recursive function 4632084fd14fSBrian Behlendorf * begins to unwind. As it unwinds it calls the parent's vdev specific 4633084fd14fSBrian Behlendorf * translation function to do the real conversion. 4634084fd14fSBrian Behlendorf */ 4635084fd14fSBrian Behlendorf void 46364d7988d6SPaul Dagnelie vdev_xlate(vdev_t *vd, const range_seg64_t *logical_rs, 46374d7988d6SPaul Dagnelie range_seg64_t *physical_rs) 4638084fd14fSBrian Behlendorf { 4639084fd14fSBrian Behlendorf /* 4640084fd14fSBrian Behlendorf * Walk up the vdev tree 4641084fd14fSBrian Behlendorf */ 4642084fd14fSBrian Behlendorf if (vd != vd->vdev_top) { 4643084fd14fSBrian Behlendorf vdev_xlate(vd->vdev_parent, logical_rs, physical_rs); 4644084fd14fSBrian Behlendorf } else { 4645084fd14fSBrian Behlendorf /* 4646084fd14fSBrian Behlendorf * We've reached the top-level vdev, initialize the 4647084fd14fSBrian Behlendorf * physical range to the logical range and start to 4648084fd14fSBrian Behlendorf * unwind. 4649084fd14fSBrian Behlendorf */ 4650084fd14fSBrian Behlendorf physical_rs->rs_start = logical_rs->rs_start; 4651084fd14fSBrian Behlendorf physical_rs->rs_end = logical_rs->rs_end; 4652084fd14fSBrian Behlendorf return; 4653084fd14fSBrian Behlendorf } 4654084fd14fSBrian Behlendorf 4655084fd14fSBrian Behlendorf vdev_t *pvd = vd->vdev_parent; 4656084fd14fSBrian Behlendorf ASSERT3P(pvd, !=, NULL); 4657084fd14fSBrian Behlendorf ASSERT3P(pvd->vdev_ops->vdev_op_xlate, !=, NULL); 4658084fd14fSBrian Behlendorf 4659084fd14fSBrian Behlendorf /* 4660084fd14fSBrian Behlendorf * As this recursive function unwinds, translate the logical 4661084fd14fSBrian Behlendorf * range into its physical components by calling the 4662084fd14fSBrian Behlendorf * vdev specific translate function. 4663084fd14fSBrian Behlendorf */ 46644d7988d6SPaul Dagnelie range_seg64_t intermediate = { 0 }; 4665084fd14fSBrian Behlendorf pvd->vdev_ops->vdev_op_xlate(vd, physical_rs, &intermediate); 4666084fd14fSBrian Behlendorf 4667084fd14fSBrian Behlendorf physical_rs->rs_start = intermediate.rs_start; 4668084fd14fSBrian Behlendorf physical_rs->rs_end = intermediate.rs_end; 4669084fd14fSBrian Behlendorf } 4670