Date: Tue, 12 Jul 2016 11:29:20 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r302647 - in vendor-sys/illumos/dist/uts/common: fs/zfs sys/sysevent Message-ID: <201607121129.u6CBTKTa093229@repo.freebsd.org>
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Author: avg Date: Tue Jul 12 11:29:19 2016 New Revision: 302647 URL: https://svnweb.freebsd.org/changeset/base/302647 Log: 6922 Emit ESC_ZFS_VDEV_REMOVE_AUX after removing an aux device illumos/illumos-gate@63364b0ee2604783e7a55f8425888867768eafa4 https://github.com/illumos/illumos-gate/commit/63364b0ee2604783e7a55f8425888867768eafa4 https://www.illumos.org/issues/6922 ZFS does not do a config_sync after removing an aux (spare, log, or cache) device. AFAICT this isn't being done because it is slow and was deemed unnecessary. However, it should be such a rare operation that speed doesn't matter, and not doing it results in two problems: 1) It is theoretically possible to remove an aux device from one pool and attach it to another, then lose power. When power is restored, both pools would think that they own the aux device. 2) Removal of the aux device doesn't send any useful sysevents to userland. Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Matthew Ahrens <mahrens@delphix.com> Approved by: Dan McDonald <danmcd@omniti.com> Author: Alan Somers <asomers@gmail.com> Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/spa.c vendor-sys/illumos/dist/uts/common/sys/sysevent/eventdefs.h Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/spa.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/spa.c Tue Jul 12 11:27:17 2016 (r302646) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/spa.c Tue Jul 12 11:29:19 2016 (r302647) @@ -5481,6 +5481,7 @@ spa_vdev_remove(spa_t *spa, uint64_t gui } else { error = SET_ERROR(EBUSY); } + spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE_AUX); } else if (spa->spa_l2cache.sav_vdevs != NULL && nvlist_lookup_nvlist_array(spa->spa_l2cache.sav_config, ZPOOL_CONFIG_L2CACHE, &l2cache, &nl2cache) == 0 && @@ -5492,6 +5493,7 @@ spa_vdev_remove(spa_t *spa, uint64_t gui ZPOOL_CONFIG_L2CACHE, l2cache, nl2cache, nv); spa_load_l2cache(spa); spa->spa_l2cache.sav_sync = B_TRUE; + spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE_AUX); } else if (vd != NULL && vd->vdev_islog) { ASSERT(!locked); ASSERT(vd == vd->vdev_top); @@ -5530,6 +5532,7 @@ spa_vdev_remove(spa_t *spa, uint64_t gui */ spa_vdev_remove_from_namespace(spa, vd); + spa_event_notify(spa, vd, ESC_ZFS_VDEV_REMOVE_DEV); } else if (vd != NULL) { /* * Normal vdevs cannot be removed (yet). @@ -5543,7 +5546,7 @@ spa_vdev_remove(spa_t *spa, uint64_t gui } if (!locked) - return (spa_vdev_exit(spa, NULL, txg, error)); + error = spa_vdev_exit(spa, NULL, txg, error); return (error); } Modified: vendor-sys/illumos/dist/uts/common/sys/sysevent/eventdefs.h ============================================================================== --- vendor-sys/illumos/dist/uts/common/sys/sysevent/eventdefs.h Tue Jul 12 11:27:17 2016 (r302646) +++ vendor-sys/illumos/dist/uts/common/sys/sysevent/eventdefs.h Tue Jul 12 11:29:19 2016 (r302647) @@ -249,6 +249,8 @@ extern "C" { #define ESC_ZFS_RESILVER_START "ESC_ZFS_resilver_start" #define ESC_ZFS_RESILVER_FINISH "ESC_ZFS_resilver_finish" #define ESC_ZFS_VDEV_REMOVE "ESC_ZFS_vdev_remove" +#define ESC_ZFS_VDEV_REMOVE_AUX "ESC_ZFS_vdev_remove_aux" +#define ESC_ZFS_VDEV_REMOVE_DEV "ESC_ZFS_vdev_remove_dev" #define ESC_ZFS_POOL_CREATE "ESC_ZFS_pool_create" #define ESC_ZFS_POOL_DESTROY "ESC_ZFS_pool_destroy" #define ESC_ZFS_POOL_IMPORT "ESC_ZFS_pool_import"
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