1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * 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 /* 23e7cbe64fSgw * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24fa9e4066Sahrens * Use is subject to license terms. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 28fa9e4066Sahrens 29fa9e4066Sahrens #include <sys/spa.h> 30fa9e4066Sahrens #include <sys/spa_impl.h> 31fa9e4066Sahrens #include <sys/nvpair.h> 32fa9e4066Sahrens #include <sys/uio.h> 33fa9e4066Sahrens #include <sys/fs/zfs.h> 34fa9e4066Sahrens #include <sys/vdev_impl.h> 35fa9e4066Sahrens #include <sys/zfs_ioctl.h> 3695173954Sek #include <sys/utsname.h> 3795173954Sek #include <sys/systeminfo.h> 3895173954Sek #include <sys/sunddi.h> 39ea8dc4b6Seschrock #ifdef _KERNEL 40ea8dc4b6Seschrock #include <sys/kobj.h> 41ea8dc4b6Seschrock #endif 42ea8dc4b6Seschrock 43fa9e4066Sahrens /* 44fa9e4066Sahrens * Pool configuration repository. 45fa9e4066Sahrens * 462f8aaab3Seschrock * Pool configuration is stored as a packed nvlist on the filesystem. By 472f8aaab3Seschrock * default, all pools are stored in /etc/zfs/zpool.cache and loaded on boot 482f8aaab3Seschrock * (when the ZFS module is loaded). Pools can also have the 'cachefile' 492f8aaab3Seschrock * property set that allows them to be stored in an alternate location until 502f8aaab3Seschrock * the control of external software. 51fa9e4066Sahrens * 522f8aaab3Seschrock * For each cache file, we have a single nvlist which holds all the 532f8aaab3Seschrock * configuration information. When the module loads, we read this information 542f8aaab3Seschrock * from /etc/zfs/zpool.cache and populate the SPA namespace. This namespace is 552f8aaab3Seschrock * maintained independently in spa.c. Whenever the namespace is modified, or 562f8aaab3Seschrock * the configuration of a pool is changed, we call spa_config_sync(), which 572f8aaab3Seschrock * walks through all the active pools and writes the configuration to disk. 58fa9e4066Sahrens */ 59fa9e4066Sahrens 60fa9e4066Sahrens static uint64_t spa_config_generation = 1; 61fa9e4066Sahrens 62fa9e4066Sahrens /* 63fa9e4066Sahrens * This can be overridden in userland to preserve an alternate namespace for 64fa9e4066Sahrens * userland pools when doing testing. 65fa9e4066Sahrens */ 66*c5904d13Seschrock const char *spa_config_path = ZPOOL_CACHE; 67fa9e4066Sahrens 68fa9e4066Sahrens /* 69fa9e4066Sahrens * Called when the module is first loaded, this routine loads the configuration 70fa9e4066Sahrens * file into the SPA namespace. It does not actually open or load the pools; it 71fa9e4066Sahrens * only populates the namespace. 72fa9e4066Sahrens */ 73fa9e4066Sahrens void 74fa9e4066Sahrens spa_config_load(void) 75fa9e4066Sahrens { 76fa9e4066Sahrens void *buf = NULL; 77fa9e4066Sahrens nvlist_t *nvlist, *child; 78fa9e4066Sahrens nvpair_t *nvpair; 79fa9e4066Sahrens spa_t *spa; 80fa9e4066Sahrens char pathname[128]; 81ea8dc4b6Seschrock struct _buf *file; 82b1b8ab34Slling uint64_t fsize; 83fa9e4066Sahrens 84fa9e4066Sahrens /* 85fa9e4066Sahrens * Open the configuration file. 86fa9e4066Sahrens */ 87*c5904d13Seschrock (void) snprintf(pathname, sizeof (pathname), "%s%s", 88*c5904d13Seschrock (rootdir != NULL) ? "./" : "", spa_config_path); 89ea8dc4b6Seschrock 90ea8dc4b6Seschrock file = kobj_open_file(pathname); 91ea8dc4b6Seschrock if (file == (struct _buf *)-1) 92fa9e4066Sahrens return; 93fa9e4066Sahrens 94b1b8ab34Slling if (kobj_get_filesize(file, &fsize) != 0) 95fa9e4066Sahrens goto out; 96fa9e4066Sahrens 97b1b8ab34Slling buf = kmem_alloc(fsize, KM_SLEEP); 98fa9e4066Sahrens 99ea8dc4b6Seschrock /* 100ea8dc4b6Seschrock * Read the nvlist from the file. 101ea8dc4b6Seschrock */ 102b1b8ab34Slling if (kobj_read_file(file, buf, fsize, 0) < 0) 103fa9e4066Sahrens goto out; 104fa9e4066Sahrens 105fa9e4066Sahrens /* 106fa9e4066Sahrens * Unpack the nvlist. 107fa9e4066Sahrens */ 108b1b8ab34Slling if (nvlist_unpack(buf, fsize, &nvlist, KM_SLEEP) != 0) 109fa9e4066Sahrens goto out; 110fa9e4066Sahrens 111fa9e4066Sahrens /* 112fa9e4066Sahrens * Iterate over all elements in the nvlist, creating a new spa_t for 113fa9e4066Sahrens * each one with the specified configuration. 114fa9e4066Sahrens */ 115fa9e4066Sahrens mutex_enter(&spa_namespace_lock); 116fa9e4066Sahrens nvpair = NULL; 117fa9e4066Sahrens while ((nvpair = nvlist_next_nvpair(nvlist, nvpair)) != NULL) { 118fa9e4066Sahrens 119fa9e4066Sahrens if (nvpair_type(nvpair) != DATA_TYPE_NVLIST) 120fa9e4066Sahrens continue; 121fa9e4066Sahrens 122fa9e4066Sahrens VERIFY(nvpair_value_nvlist(nvpair, &child) == 0); 123fa9e4066Sahrens 124fa9e4066Sahrens if (spa_lookup(nvpair_name(nvpair)) != NULL) 125fa9e4066Sahrens continue; 1260373e76bSbonwick spa = spa_add(nvpair_name(nvpair), NULL); 127fa9e4066Sahrens 128fa9e4066Sahrens /* 129fa9e4066Sahrens * We blindly duplicate the configuration here. If it's 130fa9e4066Sahrens * invalid, we will catch it when the pool is first opened. 131fa9e4066Sahrens */ 132fa9e4066Sahrens VERIFY(nvlist_dup(child, &spa->spa_config, 0) == 0); 133fa9e4066Sahrens } 134fa9e4066Sahrens mutex_exit(&spa_namespace_lock); 135fa9e4066Sahrens 136fa9e4066Sahrens nvlist_free(nvlist); 137fa9e4066Sahrens 138fa9e4066Sahrens out: 139fa9e4066Sahrens if (buf != NULL) 140b1b8ab34Slling kmem_free(buf, fsize); 141fa9e4066Sahrens 142ea8dc4b6Seschrock kobj_close_file(file); 143fa9e4066Sahrens } 144fa9e4066Sahrens 1452f8aaab3Seschrock static void 146*c5904d13Seschrock spa_config_write(spa_config_dirent_t *dp, nvlist_t *nvl) 1472f8aaab3Seschrock { 1482f8aaab3Seschrock size_t buflen; 1492f8aaab3Seschrock char *buf; 1502f8aaab3Seschrock vnode_t *vp; 1512f8aaab3Seschrock int oflags = FWRITE | FTRUNC | FCREAT | FOFFMAX; 152*c5904d13Seschrock char tempname[128]; 153*c5904d13Seschrock 154*c5904d13Seschrock /* 155*c5904d13Seschrock * If the nvlist is empty (NULL), then remove the old cachefile. 156*c5904d13Seschrock */ 157*c5904d13Seschrock if (nvl == NULL) { 158*c5904d13Seschrock (void) vn_remove(dp->scd_path, UIO_SYSSPACE, RMFILE); 159*c5904d13Seschrock return; 160*c5904d13Seschrock } 1612f8aaab3Seschrock 162fa9e4066Sahrens /* 163fa9e4066Sahrens * Pack the configuration into a buffer. 164fa9e4066Sahrens */ 165*c5904d13Seschrock VERIFY(nvlist_size(nvl, &buflen, NV_ENCODE_XDR) == 0); 166fa9e4066Sahrens 167fa9e4066Sahrens buf = kmem_alloc(buflen, KM_SLEEP); 168fa9e4066Sahrens 169*c5904d13Seschrock VERIFY(nvlist_pack(nvl, &buf, &buflen, NV_ENCODE_XDR, 170ea8dc4b6Seschrock KM_SLEEP) == 0); 171fa9e4066Sahrens 172fa9e4066Sahrens /* 173fa9e4066Sahrens * Write the configuration to disk. We need to do the traditional 174fa9e4066Sahrens * 'write to temporary file, sync, move over original' to make sure we 175fa9e4066Sahrens * always have a consistent view of the data. 176fa9e4066Sahrens */ 177*c5904d13Seschrock (void) snprintf(tempname, sizeof (tempname), "%s.tmp", dp->scd_path); 178fa9e4066Sahrens 179*c5904d13Seschrock if (vn_open(tempname, UIO_SYSSPACE, oflags, 0644, &vp, CRCREAT, 0) != 0) 180fa9e4066Sahrens goto out; 181fa9e4066Sahrens 182fa9e4066Sahrens if (vn_rdwr(UIO_WRITE, vp, buf, buflen, 0, UIO_SYSSPACE, 183fa9e4066Sahrens 0, RLIM64_INFINITY, kcred, NULL) == 0 && 184da6c28aaSamw VOP_FSYNC(vp, FSYNC, kcred, NULL) == 0) { 185*c5904d13Seschrock (void) vn_rename(tempname, dp->scd_path, UIO_SYSSPACE); 186fa9e4066Sahrens } 187fa9e4066Sahrens 188da6c28aaSamw (void) VOP_CLOSE(vp, oflags, 1, 0, kcred, NULL); 189fa9e4066Sahrens VN_RELE(vp); 190fa9e4066Sahrens 191fa9e4066Sahrens out: 192*c5904d13Seschrock (void) vn_remove(tempname, UIO_SYSSPACE, RMFILE); 193fa9e4066Sahrens kmem_free(buf, buflen); 1942f8aaab3Seschrock } 1952f8aaab3Seschrock 1962f8aaab3Seschrock /* 197*c5904d13Seschrock * Synchronize pool configuration to disk. This must be called with the 198*c5904d13Seschrock * namespace lock held. 1992f8aaab3Seschrock */ 2002f8aaab3Seschrock void 201*c5904d13Seschrock spa_config_sync(spa_t *target, boolean_t removing, boolean_t postsysevent) 2022f8aaab3Seschrock { 2032f8aaab3Seschrock spa_t *spa = NULL; 204*c5904d13Seschrock spa_config_dirent_t *dp, *tdp; 205*c5904d13Seschrock nvlist_t *nvl; 2062f8aaab3Seschrock 2072f8aaab3Seschrock ASSERT(MUTEX_HELD(&spa_namespace_lock)); 2082f8aaab3Seschrock 209*c5904d13Seschrock /* 210*c5904d13Seschrock * Iterate over all cachefiles for the pool, past or present. When the 211*c5904d13Seschrock * cachefile is changed, the new one is pushed onto this list, allowing 212*c5904d13Seschrock * us to update previous cachefiles that no longer contain this pool. 213*c5904d13Seschrock */ 214*c5904d13Seschrock for (dp = list_head(&target->spa_config_list); dp != NULL; 215*c5904d13Seschrock dp = list_next(&target->spa_config_list, dp)) { 216*c5904d13Seschrock spa = NULL; 217*c5904d13Seschrock if (dp->scd_path == NULL) 218*c5904d13Seschrock continue; 219*c5904d13Seschrock 220*c5904d13Seschrock /* 221*c5904d13Seschrock * Iterate over all pools, adding any matching pools to 'nvl'. 222*c5904d13Seschrock */ 223*c5904d13Seschrock nvl = NULL; 224*c5904d13Seschrock while ((spa = spa_next(spa)) != NULL) { 225*c5904d13Seschrock if (spa->spa_config == NULL || spa->spa_name == NULL) 226*c5904d13Seschrock continue; 227*c5904d13Seschrock 228*c5904d13Seschrock if (spa == target && removing) 229*c5904d13Seschrock continue; 230*c5904d13Seschrock 231*c5904d13Seschrock tdp = list_head(&spa->spa_config_list); 232*c5904d13Seschrock ASSERT(tdp != NULL); 233*c5904d13Seschrock if (tdp->scd_path == NULL || 234*c5904d13Seschrock strcmp(tdp->scd_path, dp->scd_path) != 0) 235*c5904d13Seschrock continue; 236*c5904d13Seschrock 237*c5904d13Seschrock if (nvl == NULL) 238*c5904d13Seschrock VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, 239*c5904d13Seschrock KM_SLEEP) == 0); 240*c5904d13Seschrock 241*c5904d13Seschrock VERIFY(nvlist_add_nvlist(nvl, spa->spa_name, 242*c5904d13Seschrock spa->spa_config) == 0); 243*c5904d13Seschrock } 244*c5904d13Seschrock 245*c5904d13Seschrock spa_config_write(dp, nvl); 246*c5904d13Seschrock nvlist_free(nvl); 247*c5904d13Seschrock } 2482f8aaab3Seschrock 2492f8aaab3Seschrock /* 250*c5904d13Seschrock * Remove any config entries older than the current one. 2512f8aaab3Seschrock */ 252*c5904d13Seschrock dp = list_head(&target->spa_config_list); 253*c5904d13Seschrock while ((tdp = list_next(&target->spa_config_list, dp)) != NULL) { 254*c5904d13Seschrock list_remove(&target->spa_config_list, tdp); 255*c5904d13Seschrock if (tdp->scd_path != NULL) 256*c5904d13Seschrock spa_strfree(tdp->scd_path); 257*c5904d13Seschrock kmem_free(tdp, sizeof (spa_config_dirent_t)); 2582f8aaab3Seschrock } 2592f8aaab3Seschrock 2602f8aaab3Seschrock spa_config_generation++; 261*c5904d13Seschrock 262*c5904d13Seschrock if (postsysevent) 263*c5904d13Seschrock spa_event_notify(target, NULL, ESC_ZFS_CONFIG_SYNC); 264fa9e4066Sahrens } 265fa9e4066Sahrens 266fa9e4066Sahrens /* 2670373e76bSbonwick * Sigh. Inside a local zone, we don't have access to /etc/zfs/zpool.cache, 268fa9e4066Sahrens * and we don't want to allow the local zone to see all the pools anyway. 269fa9e4066Sahrens * So we have to invent the ZFS_IOC_CONFIG ioctl to grab the configuration 270fa9e4066Sahrens * information for all pool visible within the zone. 271fa9e4066Sahrens */ 272fa9e4066Sahrens nvlist_t * 273fa9e4066Sahrens spa_all_configs(uint64_t *generation) 274fa9e4066Sahrens { 275fa9e4066Sahrens nvlist_t *pools; 276fa9e4066Sahrens spa_t *spa; 277fa9e4066Sahrens 278fa9e4066Sahrens if (*generation == spa_config_generation) 279fa9e4066Sahrens return (NULL); 280fa9e4066Sahrens 281ea8dc4b6Seschrock VERIFY(nvlist_alloc(&pools, NV_UNIQUE_NAME, KM_SLEEP) == 0); 282fa9e4066Sahrens 283fa9e4066Sahrens spa = NULL; 284fa9e4066Sahrens mutex_enter(&spa_namespace_lock); 285fa9e4066Sahrens while ((spa = spa_next(spa)) != NULL) { 286fa9e4066Sahrens if (INGLOBALZONE(curproc) || 287fa9e4066Sahrens zone_dataset_visible(spa_name(spa), NULL)) { 288fa9e4066Sahrens mutex_enter(&spa->spa_config_cache_lock); 289fa9e4066Sahrens VERIFY(nvlist_add_nvlist(pools, spa_name(spa), 290fa9e4066Sahrens spa->spa_config) == 0); 291fa9e4066Sahrens mutex_exit(&spa->spa_config_cache_lock); 292fa9e4066Sahrens } 293fa9e4066Sahrens } 294fa9e4066Sahrens mutex_exit(&spa_namespace_lock); 295fa9e4066Sahrens 296fa9e4066Sahrens *generation = spa_config_generation; 297fa9e4066Sahrens 298fa9e4066Sahrens return (pools); 299fa9e4066Sahrens } 300fa9e4066Sahrens 301fa9e4066Sahrens void 302fa9e4066Sahrens spa_config_set(spa_t *spa, nvlist_t *config) 303fa9e4066Sahrens { 304fa9e4066Sahrens mutex_enter(&spa->spa_config_cache_lock); 305fa9e4066Sahrens if (spa->spa_config != NULL) 306fa9e4066Sahrens nvlist_free(spa->spa_config); 307fa9e4066Sahrens spa->spa_config = config; 308fa9e4066Sahrens mutex_exit(&spa->spa_config_cache_lock); 309fa9e4066Sahrens } 310fa9e4066Sahrens 311fa9e4066Sahrens /* 312fa9e4066Sahrens * Generate the pool's configuration based on the current in-core state. 313fa9e4066Sahrens * We infer whether to generate a complete config or just one top-level config 314fa9e4066Sahrens * based on whether vd is the root vdev. 315fa9e4066Sahrens */ 316fa9e4066Sahrens nvlist_t * 317fa9e4066Sahrens spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, int getstats) 318fa9e4066Sahrens { 319fa9e4066Sahrens nvlist_t *config, *nvroot; 320fa9e4066Sahrens vdev_t *rvd = spa->spa_root_vdev; 32195173954Sek unsigned long hostid = 0; 322fa9e4066Sahrens 32391ebeef5Sahrens ASSERT(spa_config_held(spa, RW_READER) || 32491ebeef5Sahrens spa_config_held(spa, RW_WRITER)); 3250373e76bSbonwick 326fa9e4066Sahrens if (vd == NULL) 327fa9e4066Sahrens vd = rvd; 328fa9e4066Sahrens 329fa9e4066Sahrens /* 330fa9e4066Sahrens * If txg is -1, report the current value of spa->spa_config_txg. 331fa9e4066Sahrens */ 332fa9e4066Sahrens if (txg == -1ULL) 333fa9e4066Sahrens txg = spa->spa_config_txg; 334fa9e4066Sahrens 335ea8dc4b6Seschrock VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, KM_SLEEP) == 0); 336fa9e4066Sahrens 337fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, 33899653d4eSeschrock spa_version(spa)) == 0); 339fa9e4066Sahrens VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, 340fa9e4066Sahrens spa_name(spa)) == 0); 341fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, 342fa9e4066Sahrens spa_state(spa)) == 0); 343fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, 344fa9e4066Sahrens txg) == 0); 345fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, 346fa9e4066Sahrens spa_guid(spa)) == 0); 34795173954Sek (void) ddi_strtoul(hw_serial, NULL, 10, &hostid); 34817194a52Slling if (hostid != 0) { 34917194a52Slling VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_HOSTID, 3508654d025Sperrin hostid) == 0); 35117194a52Slling } 35295173954Sek VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_HOSTNAME, 35395173954Sek utsname.nodename) == 0); 354fa9e4066Sahrens 355fa9e4066Sahrens if (vd != rvd) { 356fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TOP_GUID, 357fa9e4066Sahrens vd->vdev_top->vdev_guid) == 0); 358fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_GUID, 359fa9e4066Sahrens vd->vdev_guid) == 0); 36099653d4eSeschrock if (vd->vdev_isspare) 36199653d4eSeschrock VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_IS_SPARE, 36299653d4eSeschrock 1ULL) == 0); 3638654d025Sperrin if (vd->vdev_islog) 3648654d025Sperrin VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_IS_LOG, 3658654d025Sperrin 1ULL) == 0); 366fa9e4066Sahrens vd = vd->vdev_top; /* label contains top config */ 367fa9e4066Sahrens } 368fa9e4066Sahrens 369fa94a07fSbrendan nvroot = vdev_config_generate(spa, vd, getstats, B_FALSE, B_FALSE); 370fa9e4066Sahrens VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); 371fa9e4066Sahrens nvlist_free(nvroot); 372fa9e4066Sahrens 373fa9e4066Sahrens return (config); 374fa9e4066Sahrens } 3750373e76bSbonwick 3760373e76bSbonwick /* 377e7cbe64fSgw * For a pool that's not currently a booting rootpool, update all disk labels, 378e7cbe64fSgw * generate a fresh config based on the current in-core state, and sync the 379e7cbe64fSgw * global config cache. 3800373e76bSbonwick */ 3810373e76bSbonwick void 3820373e76bSbonwick spa_config_update(spa_t *spa, int what) 383e7cbe64fSgw { 384e7cbe64fSgw spa_config_update_common(spa, what, FALSE); 385e7cbe64fSgw } 386e7cbe64fSgw 387e7cbe64fSgw /* 388e7cbe64fSgw * Update all disk labels, generate a fresh config based on the current 389e7cbe64fSgw * in-core state, and sync the global config cache (do not sync the config 390e7cbe64fSgw * cache if this is a booting rootpool). 391e7cbe64fSgw */ 392e7cbe64fSgw void 393e7cbe64fSgw spa_config_update_common(spa_t *spa, int what, boolean_t isroot) 3940373e76bSbonwick { 3950373e76bSbonwick vdev_t *rvd = spa->spa_root_vdev; 3960373e76bSbonwick uint64_t txg; 3970373e76bSbonwick int c; 3980373e76bSbonwick 3990373e76bSbonwick ASSERT(MUTEX_HELD(&spa_namespace_lock)); 4000373e76bSbonwick 4010373e76bSbonwick spa_config_enter(spa, RW_WRITER, FTAG); 4020373e76bSbonwick txg = spa_last_synced_txg(spa) + 1; 4030373e76bSbonwick if (what == SPA_CONFIG_UPDATE_POOL) { 4040373e76bSbonwick vdev_config_dirty(rvd); 4050373e76bSbonwick } else { 4060373e76bSbonwick /* 4070373e76bSbonwick * If we have top-level vdevs that were added but have 4080373e76bSbonwick * not yet been prepared for allocation, do that now. 4090373e76bSbonwick * (It's safe now because the config cache is up to date, 4100373e76bSbonwick * so it will be able to translate the new DVAs.) 4110373e76bSbonwick * See comments in spa_vdev_add() for full details. 4120373e76bSbonwick */ 4130373e76bSbonwick for (c = 0; c < rvd->vdev_children; c++) { 4140373e76bSbonwick vdev_t *tvd = rvd->vdev_child[c]; 4150373e76bSbonwick if (tvd->vdev_ms_array == 0) { 4160373e76bSbonwick vdev_init(tvd, txg); 4170373e76bSbonwick vdev_config_dirty(tvd); 4180373e76bSbonwick } 4190373e76bSbonwick } 4200373e76bSbonwick } 4210373e76bSbonwick spa_config_exit(spa, FTAG); 4220373e76bSbonwick 4230373e76bSbonwick /* 4240373e76bSbonwick * Wait for the mosconfig to be regenerated and synced. 4250373e76bSbonwick */ 4260373e76bSbonwick txg_wait_synced(spa->spa_dsl_pool, txg); 4270373e76bSbonwick 4280373e76bSbonwick /* 4290373e76bSbonwick * Update the global config cache to reflect the new mosconfig. 4300373e76bSbonwick */ 431e7cbe64fSgw if (!isroot) 432*c5904d13Seschrock spa_config_sync(spa, B_FALSE, what != SPA_CONFIG_UPDATE_POOL); 4330373e76bSbonwick 4340373e76bSbonwick if (what == SPA_CONFIG_UPDATE_POOL) 435e7cbe64fSgw spa_config_update_common(spa, SPA_CONFIG_UPDATE_VDEVS, isroot); 4360373e76bSbonwick } 437