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 /* 233f9d6ad7SLin Ling * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24*8704186eSDan McDonald * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 25*8704186eSDan McDonald * Copyright (c) 2011 by Delphix. All rights reserved. 26fa9e4066Sahrens */ 27fa9e4066Sahrens 28fa9e4066Sahrens #include <sys/spa.h> 29fa9e4066Sahrens #include <sys/spa_impl.h> 30fa9e4066Sahrens #include <sys/nvpair.h> 31fa9e4066Sahrens #include <sys/uio.h> 32fa9e4066Sahrens #include <sys/fs/zfs.h> 33fa9e4066Sahrens #include <sys/vdev_impl.h> 34fa9e4066Sahrens #include <sys/zfs_ioctl.h> 3595173954Sek #include <sys/utsname.h> 3695173954Sek #include <sys/systeminfo.h> 3795173954Sek #include <sys/sunddi.h> 38ea8dc4b6Seschrock #ifdef _KERNEL 39ea8dc4b6Seschrock #include <sys/kobj.h> 405679c89fSjv #include <sys/zone.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 */ 66c5904d13Seschrock 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; 79e14bb325SJeff Bonwick char *pathname; 80ea8dc4b6Seschrock struct _buf *file; 81b1b8ab34Slling uint64_t fsize; 82fa9e4066Sahrens 83fa9e4066Sahrens /* 84fa9e4066Sahrens * Open the configuration file. 85fa9e4066Sahrens */ 86e14bb325SJeff Bonwick pathname = kmem_alloc(MAXPATHLEN, KM_SLEEP); 87e14bb325SJeff Bonwick 88e14bb325SJeff Bonwick (void) snprintf(pathname, MAXPATHLEN, "%s%s", 89c5904d13Seschrock (rootdir != NULL) ? "./" : "", spa_config_path); 90ea8dc4b6Seschrock 91ea8dc4b6Seschrock file = kobj_open_file(pathname); 92e14bb325SJeff Bonwick 93e14bb325SJeff Bonwick kmem_free(pathname, MAXPATHLEN); 94e14bb325SJeff Bonwick 95ea8dc4b6Seschrock if (file == (struct _buf *)-1) 96fa9e4066Sahrens return; 97fa9e4066Sahrens 98b1b8ab34Slling if (kobj_get_filesize(file, &fsize) != 0) 99fa9e4066Sahrens goto out; 100fa9e4066Sahrens 101b1b8ab34Slling buf = kmem_alloc(fsize, KM_SLEEP); 102fa9e4066Sahrens 103ea8dc4b6Seschrock /* 104ea8dc4b6Seschrock * Read the nvlist from the file. 105ea8dc4b6Seschrock */ 106b1b8ab34Slling if (kobj_read_file(file, buf, fsize, 0) < 0) 107fa9e4066Sahrens goto out; 108fa9e4066Sahrens 109fa9e4066Sahrens /* 110fa9e4066Sahrens * Unpack the nvlist. 111fa9e4066Sahrens */ 112b1b8ab34Slling if (nvlist_unpack(buf, fsize, &nvlist, KM_SLEEP) != 0) 113fa9e4066Sahrens goto out; 114fa9e4066Sahrens 115fa9e4066Sahrens /* 116fa9e4066Sahrens * Iterate over all elements in the nvlist, creating a new spa_t for 117fa9e4066Sahrens * each one with the specified configuration. 118fa9e4066Sahrens */ 119fa9e4066Sahrens mutex_enter(&spa_namespace_lock); 120fa9e4066Sahrens nvpair = NULL; 121fa9e4066Sahrens while ((nvpair = nvlist_next_nvpair(nvlist, nvpair)) != NULL) { 122fa9e4066Sahrens if (nvpair_type(nvpair) != DATA_TYPE_NVLIST) 123fa9e4066Sahrens continue; 124fa9e4066Sahrens 125fa9e4066Sahrens VERIFY(nvpair_value_nvlist(nvpair, &child) == 0); 126fa9e4066Sahrens 127fa9e4066Sahrens if (spa_lookup(nvpair_name(nvpair)) != NULL) 128fa9e4066Sahrens continue; 129468c413aSTim Haley (void) spa_add(nvpair_name(nvpair), child, NULL); 130fa9e4066Sahrens } 131fa9e4066Sahrens mutex_exit(&spa_namespace_lock); 132fa9e4066Sahrens 133fa9e4066Sahrens nvlist_free(nvlist); 134fa9e4066Sahrens 135fa9e4066Sahrens out: 136fa9e4066Sahrens if (buf != NULL) 137b1b8ab34Slling kmem_free(buf, fsize); 138fa9e4066Sahrens 139ea8dc4b6Seschrock kobj_close_file(file); 140fa9e4066Sahrens } 141fa9e4066Sahrens 1422f8aaab3Seschrock static void 143c5904d13Seschrock spa_config_write(spa_config_dirent_t *dp, nvlist_t *nvl) 1442f8aaab3Seschrock { 1452f8aaab3Seschrock size_t buflen; 1462f8aaab3Seschrock char *buf; 1472f8aaab3Seschrock vnode_t *vp; 1482f8aaab3Seschrock int oflags = FWRITE | FTRUNC | FCREAT | FOFFMAX; 149e14bb325SJeff Bonwick char *temp; 150c5904d13Seschrock 151c5904d13Seschrock /* 152c5904d13Seschrock * If the nvlist is empty (NULL), then remove the old cachefile. 153c5904d13Seschrock */ 154c5904d13Seschrock if (nvl == NULL) { 155c5904d13Seschrock (void) vn_remove(dp->scd_path, UIO_SYSSPACE, RMFILE); 156c5904d13Seschrock return; 157c5904d13Seschrock } 1582f8aaab3Seschrock 159fa9e4066Sahrens /* 160fa9e4066Sahrens * Pack the configuration into a buffer. 161fa9e4066Sahrens */ 162c5904d13Seschrock VERIFY(nvlist_size(nvl, &buflen, NV_ENCODE_XDR) == 0); 163fa9e4066Sahrens 164fa9e4066Sahrens buf = kmem_alloc(buflen, KM_SLEEP); 165e14bb325SJeff Bonwick temp = kmem_zalloc(MAXPATHLEN, KM_SLEEP); 166fa9e4066Sahrens 167c5904d13Seschrock VERIFY(nvlist_pack(nvl, &buf, &buflen, NV_ENCODE_XDR, 168ea8dc4b6Seschrock KM_SLEEP) == 0); 169fa9e4066Sahrens 170fa9e4066Sahrens /* 171fa9e4066Sahrens * Write the configuration to disk. We need to do the traditional 172fa9e4066Sahrens * 'write to temporary file, sync, move over original' to make sure we 173fa9e4066Sahrens * always have a consistent view of the data. 174fa9e4066Sahrens */ 175e14bb325SJeff Bonwick (void) snprintf(temp, MAXPATHLEN, "%s.tmp", dp->scd_path); 176fa9e4066Sahrens 177e14bb325SJeff Bonwick if (vn_open(temp, UIO_SYSSPACE, oflags, 0644, &vp, CRCREAT, 0) == 0) { 178e14bb325SJeff Bonwick if (vn_rdwr(UIO_WRITE, vp, buf, buflen, 0, UIO_SYSSPACE, 179e14bb325SJeff Bonwick 0, RLIM64_INFINITY, kcred, NULL) == 0 && 180e14bb325SJeff Bonwick VOP_FSYNC(vp, FSYNC, kcred, NULL) == 0) { 181e14bb325SJeff Bonwick (void) vn_rename(temp, dp->scd_path, UIO_SYSSPACE); 182e14bb325SJeff Bonwick } 183e14bb325SJeff Bonwick (void) VOP_CLOSE(vp, oflags, 1, 0, kcred, NULL); 184e14bb325SJeff Bonwick VN_RELE(vp); 185fa9e4066Sahrens } 186fa9e4066Sahrens 187e14bb325SJeff Bonwick (void) vn_remove(temp, UIO_SYSSPACE, RMFILE); 188fa9e4066Sahrens 189fa9e4066Sahrens kmem_free(buf, buflen); 190e14bb325SJeff Bonwick kmem_free(temp, MAXPATHLEN); 1912f8aaab3Seschrock } 1922f8aaab3Seschrock 1932f8aaab3Seschrock /* 194c5904d13Seschrock * Synchronize pool configuration to disk. This must be called with the 195c5904d13Seschrock * namespace lock held. 1962f8aaab3Seschrock */ 1972f8aaab3Seschrock void 198c5904d13Seschrock spa_config_sync(spa_t *target, boolean_t removing, boolean_t postsysevent) 1992f8aaab3Seschrock { 200c5904d13Seschrock spa_config_dirent_t *dp, *tdp; 201c5904d13Seschrock nvlist_t *nvl; 2022f8aaab3Seschrock 2032f8aaab3Seschrock ASSERT(MUTEX_HELD(&spa_namespace_lock)); 2042f8aaab3Seschrock 2054f0f5e5bSVictor Latushkin if (rootdir == NULL || !(spa_mode_global & FWRITE)) 2069fddc96aSGeorge Wilson return; 2079fddc96aSGeorge Wilson 208c5904d13Seschrock /* 209c5904d13Seschrock * Iterate over all cachefiles for the pool, past or present. When the 210c5904d13Seschrock * cachefile is changed, the new one is pushed onto this list, allowing 211c5904d13Seschrock * us to update previous cachefiles that no longer contain this pool. 212c5904d13Seschrock */ 213c5904d13Seschrock for (dp = list_head(&target->spa_config_list); dp != NULL; 214c5904d13Seschrock dp = list_next(&target->spa_config_list, dp)) { 215e14bb325SJeff Bonwick spa_t *spa = NULL; 216c5904d13Seschrock if (dp->scd_path == NULL) 217c5904d13Seschrock continue; 218c5904d13Seschrock 219c5904d13Seschrock /* 220c5904d13Seschrock * Iterate over all pools, adding any matching pools to 'nvl'. 221c5904d13Seschrock */ 222c5904d13Seschrock nvl = NULL; 223c5904d13Seschrock while ((spa = spa_next(spa)) != NULL) { 224c5904d13Seschrock if (spa == target && removing) 225c5904d13Seschrock continue; 226c5904d13Seschrock 227e14bb325SJeff Bonwick mutex_enter(&spa->spa_props_lock); 228c5904d13Seschrock tdp = list_head(&spa->spa_config_list); 229e14bb325SJeff Bonwick if (spa->spa_config == NULL || 230e14bb325SJeff Bonwick tdp->scd_path == NULL || 231e14bb325SJeff Bonwick strcmp(tdp->scd_path, dp->scd_path) != 0) { 232e14bb325SJeff Bonwick mutex_exit(&spa->spa_props_lock); 233c5904d13Seschrock continue; 234e14bb325SJeff Bonwick } 235c5904d13Seschrock 236c5904d13Seschrock if (nvl == NULL) 237c5904d13Seschrock VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME, 238c5904d13Seschrock KM_SLEEP) == 0); 239c5904d13Seschrock 240c5904d13Seschrock VERIFY(nvlist_add_nvlist(nvl, spa->spa_name, 241c5904d13Seschrock spa->spa_config) == 0); 242e14bb325SJeff Bonwick mutex_exit(&spa->spa_props_lock); 243c5904d13Seschrock } 244c5904d13Seschrock 245c5904d13Seschrock spa_config_write(dp, nvl); 246c5904d13Seschrock nvlist_free(nvl); 247c5904d13Seschrock } 2482f8aaab3Seschrock 2492f8aaab3Seschrock /* 250c5904d13Seschrock * Remove any config entries older than the current one. 2512f8aaab3Seschrock */ 252c5904d13Seschrock dp = list_head(&target->spa_config_list); 253c5904d13Seschrock while ((tdp = list_next(&target->spa_config_list, dp)) != NULL) { 254c5904d13Seschrock list_remove(&target->spa_config_list, tdp); 255c5904d13Seschrock if (tdp->scd_path != NULL) 256c5904d13Seschrock spa_strfree(tdp->scd_path); 257c5904d13Seschrock kmem_free(tdp, sizeof (spa_config_dirent_t)); 2582f8aaab3Seschrock } 2592f8aaab3Seschrock 2602f8aaab3Seschrock spa_config_generation++; 261c5904d13Seschrock 262c5904d13Seschrock if (postsysevent) 263c5904d13Seschrock 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; 276e14bb325SJeff Bonwick spa_t *spa = NULL; 277fa9e4066Sahrens 278fa9e4066Sahrens if (*generation == spa_config_generation) 279fa9e4066Sahrens return (NULL); 280fa9e4066Sahrens 281ea8dc4b6Seschrock VERIFY(nvlist_alloc(&pools, NV_UNIQUE_NAME, KM_SLEEP) == 0); 282fa9e4066Sahrens 283fa9e4066Sahrens mutex_enter(&spa_namespace_lock); 284fa9e4066Sahrens while ((spa = spa_next(spa)) != NULL) { 285fa9e4066Sahrens if (INGLOBALZONE(curproc) || 286fa9e4066Sahrens zone_dataset_visible(spa_name(spa), NULL)) { 287e14bb325SJeff Bonwick mutex_enter(&spa->spa_props_lock); 288fa9e4066Sahrens VERIFY(nvlist_add_nvlist(pools, spa_name(spa), 289fa9e4066Sahrens spa->spa_config) == 0); 290e14bb325SJeff Bonwick mutex_exit(&spa->spa_props_lock); 291fa9e4066Sahrens } 292fa9e4066Sahrens } 293fa9e4066Sahrens *generation = spa_config_generation; 294e14bb325SJeff Bonwick mutex_exit(&spa_namespace_lock); 295fa9e4066Sahrens 296fa9e4066Sahrens return (pools); 297fa9e4066Sahrens } 298fa9e4066Sahrens 299fa9e4066Sahrens void 300fa9e4066Sahrens spa_config_set(spa_t *spa, nvlist_t *config) 301fa9e4066Sahrens { 302e14bb325SJeff Bonwick mutex_enter(&spa->spa_props_lock); 303fa9e4066Sahrens if (spa->spa_config != NULL) 304fa9e4066Sahrens nvlist_free(spa->spa_config); 305fa9e4066Sahrens spa->spa_config = config; 306e14bb325SJeff Bonwick mutex_exit(&spa->spa_props_lock); 307fa9e4066Sahrens } 308fa9e4066Sahrens 309fa9e4066Sahrens /* 310fa9e4066Sahrens * Generate the pool's configuration based on the current in-core state. 311fa9e4066Sahrens * We infer whether to generate a complete config or just one top-level config 312fa9e4066Sahrens * based on whether vd is the root vdev. 313fa9e4066Sahrens */ 314fa9e4066Sahrens nvlist_t * 315fa9e4066Sahrens spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, int getstats) 316fa9e4066Sahrens { 317fa9e4066Sahrens nvlist_t *config, *nvroot; 318fa9e4066Sahrens vdev_t *rvd = spa->spa_root_vdev; 31995173954Sek unsigned long hostid = 0; 320e14bb325SJeff Bonwick boolean_t locked = B_FALSE; 3211195e687SMark J Musante uint64_t split_guid; 322fa9e4066Sahrens 323e14bb325SJeff Bonwick if (vd == NULL) { 324fa9e4066Sahrens vd = rvd; 325e14bb325SJeff Bonwick locked = B_TRUE; 326e14bb325SJeff Bonwick spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER); 327e14bb325SJeff Bonwick } 328e14bb325SJeff Bonwick 329e14bb325SJeff Bonwick ASSERT(spa_config_held(spa, SCL_CONFIG | SCL_STATE, RW_READER) == 330e14bb325SJeff Bonwick (SCL_CONFIG | SCL_STATE)); 331fa9e4066Sahrens 332fa9e4066Sahrens /* 333fa9e4066Sahrens * If txg is -1, report the current value of spa->spa_config_txg. 334fa9e4066Sahrens */ 335fa9e4066Sahrens if (txg == -1ULL) 336fa9e4066Sahrens txg = spa->spa_config_txg; 337fa9e4066Sahrens 338ea8dc4b6Seschrock VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, KM_SLEEP) == 0); 339fa9e4066Sahrens 340fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, 34199653d4eSeschrock spa_version(spa)) == 0); 342fa9e4066Sahrens VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, 343fa9e4066Sahrens spa_name(spa)) == 0); 344fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, 345fa9e4066Sahrens spa_state(spa)) == 0); 346fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, 347fa9e4066Sahrens txg) == 0); 348fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, 349fa9e4066Sahrens spa_guid(spa)) == 0); 350*8704186eSDan McDonald VERIFY(spa->spa_comment == NULL || nvlist_add_string(config, 351*8704186eSDan McDonald ZPOOL_CONFIG_COMMENT, spa->spa_comment) == 0); 352*8704186eSDan McDonald 353*8704186eSDan McDonald 3545679c89fSjv #ifdef _KERNEL 3555679c89fSjv hostid = zone_get_hostid(NULL); 3565679c89fSjv #else /* _KERNEL */ 3575679c89fSjv /* 3585679c89fSjv * We're emulating the system's hostid in userland, so we can't use 3595679c89fSjv * zone_get_hostid(). 3605679c89fSjv */ 36195173954Sek (void) ddi_strtoul(hw_serial, NULL, 10, &hostid); 3625679c89fSjv #endif /* _KERNEL */ 36317194a52Slling if (hostid != 0) { 36417194a52Slling VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_HOSTID, 3658654d025Sperrin hostid) == 0); 36617194a52Slling } 36795173954Sek VERIFY(nvlist_add_string(config, ZPOOL_CONFIG_HOSTNAME, 36895173954Sek utsname.nodename) == 0); 369fa9e4066Sahrens 370fa9e4066Sahrens if (vd != rvd) { 371fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_TOP_GUID, 372fa9e4066Sahrens vd->vdev_top->vdev_guid) == 0); 373fa9e4066Sahrens VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_GUID, 374fa9e4066Sahrens vd->vdev_guid) == 0); 37599653d4eSeschrock if (vd->vdev_isspare) 37699653d4eSeschrock VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_IS_SPARE, 37799653d4eSeschrock 1ULL) == 0); 3788654d025Sperrin if (vd->vdev_islog) 3798654d025Sperrin VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_IS_LOG, 3808654d025Sperrin 1ULL) == 0); 381fa9e4066Sahrens vd = vd->vdev_top; /* label contains top config */ 3821195e687SMark J Musante } else { 3831195e687SMark J Musante /* 3841195e687SMark J Musante * Only add the (potentially large) split information 3851195e687SMark J Musante * in the mos config, and not in the vdev labels 3861195e687SMark J Musante */ 3871195e687SMark J Musante if (spa->spa_config_splitting != NULL) 3881195e687SMark J Musante VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_SPLIT, 3891195e687SMark J Musante spa->spa_config_splitting) == 0); 390fa9e4066Sahrens } 391fa9e4066Sahrens 39288ecc943SGeorge Wilson /* 39388ecc943SGeorge Wilson * Add the top-level config. We even add this on pools which 3944b964adaSGeorge Wilson * don't support holes in the namespace. 39588ecc943SGeorge Wilson */ 39688ecc943SGeorge Wilson vdev_top_config_generate(spa, config); 39788ecc943SGeorge Wilson 3981195e687SMark J Musante /* 3991195e687SMark J Musante * If we're splitting, record the original pool's guid. 4001195e687SMark J Musante */ 4011195e687SMark J Musante if (spa->spa_config_splitting != NULL && 4021195e687SMark J Musante nvlist_lookup_uint64(spa->spa_config_splitting, 4031195e687SMark J Musante ZPOOL_CONFIG_SPLIT_GUID, &split_guid) == 0) { 4041195e687SMark J Musante VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_SPLIT_GUID, 4051195e687SMark J Musante split_guid) == 0); 4061195e687SMark J Musante } 4071195e687SMark J Musante 4083f9d6ad7SLin Ling nvroot = vdev_config_generate(spa, vd, getstats, 0); 409fa9e4066Sahrens VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0); 410fa9e4066Sahrens nvlist_free(nvroot); 411fa9e4066Sahrens 4129eb19f4dSGeorge Wilson if (getstats && spa_load_state(spa) == SPA_LOAD_NONE) { 4139eb19f4dSGeorge Wilson ddt_histogram_t *ddh; 4149eb19f4dSGeorge Wilson ddt_stat_t *dds; 4159eb19f4dSGeorge Wilson ddt_object_t *ddo; 4169eb19f4dSGeorge Wilson 4179eb19f4dSGeorge Wilson ddh = kmem_zalloc(sizeof (ddt_histogram_t), KM_SLEEP); 4189eb19f4dSGeorge Wilson ddt_get_dedup_histogram(spa, ddh); 4199eb19f4dSGeorge Wilson VERIFY(nvlist_add_uint64_array(config, 4209eb19f4dSGeorge Wilson ZPOOL_CONFIG_DDT_HISTOGRAM, 4219eb19f4dSGeorge Wilson (uint64_t *)ddh, sizeof (*ddh) / sizeof (uint64_t)) == 0); 4229eb19f4dSGeorge Wilson kmem_free(ddh, sizeof (ddt_histogram_t)); 4239eb19f4dSGeorge Wilson 4249eb19f4dSGeorge Wilson ddo = kmem_zalloc(sizeof (ddt_object_t), KM_SLEEP); 4259eb19f4dSGeorge Wilson ddt_get_dedup_object_stats(spa, ddo); 4269eb19f4dSGeorge Wilson VERIFY(nvlist_add_uint64_array(config, 4279eb19f4dSGeorge Wilson ZPOOL_CONFIG_DDT_OBJ_STATS, 4289eb19f4dSGeorge Wilson (uint64_t *)ddo, sizeof (*ddo) / sizeof (uint64_t)) == 0); 4299eb19f4dSGeorge Wilson kmem_free(ddo, sizeof (ddt_object_t)); 4309eb19f4dSGeorge Wilson 4319eb19f4dSGeorge Wilson dds = kmem_zalloc(sizeof (ddt_stat_t), KM_SLEEP); 4329eb19f4dSGeorge Wilson ddt_get_dedup_stats(spa, dds); 4339eb19f4dSGeorge Wilson VERIFY(nvlist_add_uint64_array(config, 4349eb19f4dSGeorge Wilson ZPOOL_CONFIG_DDT_STATS, 4359eb19f4dSGeorge Wilson (uint64_t *)dds, sizeof (*dds) / sizeof (uint64_t)) == 0); 4369eb19f4dSGeorge Wilson kmem_free(dds, sizeof (ddt_stat_t)); 4379eb19f4dSGeorge Wilson } 4389eb19f4dSGeorge Wilson 439e14bb325SJeff Bonwick if (locked) 440e14bb325SJeff Bonwick spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG); 441e14bb325SJeff Bonwick 442fa9e4066Sahrens return (config); 443fa9e4066Sahrens } 4440373e76bSbonwick 445e7cbe64fSgw /* 446e7cbe64fSgw * Update all disk labels, generate a fresh config based on the current 447e7cbe64fSgw * in-core state, and sync the global config cache (do not sync the config 448e7cbe64fSgw * cache if this is a booting rootpool). 449e7cbe64fSgw */ 450e7cbe64fSgw void 451bc758434SLin Ling spa_config_update(spa_t *spa, int what) 4520373e76bSbonwick { 4530373e76bSbonwick vdev_t *rvd = spa->spa_root_vdev; 4540373e76bSbonwick uint64_t txg; 4550373e76bSbonwick int c; 4560373e76bSbonwick 4570373e76bSbonwick ASSERT(MUTEX_HELD(&spa_namespace_lock)); 4580373e76bSbonwick 459e14bb325SJeff Bonwick spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER); 4600373e76bSbonwick txg = spa_last_synced_txg(spa) + 1; 4610373e76bSbonwick if (what == SPA_CONFIG_UPDATE_POOL) { 4620373e76bSbonwick vdev_config_dirty(rvd); 4630373e76bSbonwick } else { 4640373e76bSbonwick /* 4650373e76bSbonwick * If we have top-level vdevs that were added but have 4660373e76bSbonwick * not yet been prepared for allocation, do that now. 4670373e76bSbonwick * (It's safe now because the config cache is up to date, 4680373e76bSbonwick * so it will be able to translate the new DVAs.) 4690373e76bSbonwick * See comments in spa_vdev_add() for full details. 4700373e76bSbonwick */ 4710373e76bSbonwick for (c = 0; c < rvd->vdev_children; c++) { 4720373e76bSbonwick vdev_t *tvd = rvd->vdev_child[c]; 473573ca77eSGeorge Wilson if (tvd->vdev_ms_array == 0) 474573ca77eSGeorge Wilson vdev_metaslab_set_size(tvd); 475573ca77eSGeorge Wilson vdev_expand(tvd, txg); 4760373e76bSbonwick } 4770373e76bSbonwick } 478e14bb325SJeff Bonwick spa_config_exit(spa, SCL_ALL, FTAG); 4790373e76bSbonwick 4800373e76bSbonwick /* 4810373e76bSbonwick * Wait for the mosconfig to be regenerated and synced. 4820373e76bSbonwick */ 4830373e76bSbonwick txg_wait_synced(spa->spa_dsl_pool, txg); 4840373e76bSbonwick 4850373e76bSbonwick /* 4860373e76bSbonwick * Update the global config cache to reflect the new mosconfig. 4870373e76bSbonwick */ 488bc758434SLin Ling if (!spa->spa_is_root) 489c5904d13Seschrock spa_config_sync(spa, B_FALSE, what != SPA_CONFIG_UPDATE_POOL); 4900373e76bSbonwick 4910373e76bSbonwick if (what == SPA_CONFIG_UPDATE_POOL) 492bc758434SLin Ling spa_config_update(spa, SPA_CONFIG_UPDATE_VDEVS); 4930373e76bSbonwick } 494