diff options
Diffstat (limited to 'module/zfs/spa.c')
| -rw-r--r-- | module/zfs/spa.c | 42 |
1 files changed, 39 insertions, 3 deletions
diff --git a/module/zfs/spa.c b/module/zfs/spa.c index a43b88338..31ffd453f 100644 --- a/module/zfs/spa.c +++ b/module/zfs/spa.c @@ -21,9 +21,8 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - */ -/* * Copyright 2011 Nexenta Systems, Inc. All rights reserved. + * Copyright (c) 2011 by Delphix. All rights reserved. */ /* @@ -572,6 +571,43 @@ spa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx) } /* + * Change the GUID for the pool. This is done so that we can later + * re-import a pool built from a clone of our own vdevs. We will modify + * the root vdev's guid, our own pool guid, and then mark all of our + * vdevs dirty. Note that we must make sure that all our vdevs are + * online when we do this, or else any vdevs that weren't present + * would be orphaned from our pool. We are also going to issue a + * sysevent to update any watchers. + */ +int +spa_change_guid(spa_t *spa) +{ + uint64_t oldguid, newguid; + uint64_t txg; + + if (!(spa_mode_global & FWRITE)) + return (EROFS); + + txg = spa_vdev_enter(spa); + + if (spa->spa_root_vdev->vdev_state != VDEV_STATE_HEALTHY) + return (spa_vdev_exit(spa, NULL, txg, ENXIO)); + + oldguid = spa_guid(spa); + newguid = spa_generate_guid(NULL); + ASSERT3U(oldguid, !=, newguid); + + spa->spa_root_vdev->vdev_guid = newguid; + spa->spa_root_vdev->vdev_guid_sum += (newguid - oldguid); + + vdev_config_dirty(spa->spa_root_vdev); + + spa_event_notify(spa, NULL, FM_EREPORT_ZFS_POOL_REGUID); + + return (spa_vdev_exit(spa, NULL, txg, 0)); +} + +/* * ========================================================================== * SPA state manipulation (open/create/destroy/import/export) * ========================================================================== @@ -1773,7 +1809,7 @@ spa_load(spa_t *spa, spa_load_state_t state, spa_import_type_t type, spa_guid_exists(pool_guid, 0)) { error = EEXIST; } else { - spa->spa_load_guid = pool_guid; + spa->spa_config_guid = pool_guid; if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_SPLIT, &nvl) == 0) { |