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Matthew Ahrens 335b251ac1 OpenZFS 8166 - zpool scrub thinks it repaired offline device 
Authored by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: Matthew Ahrens <mahrens@delphix.com>

If we do a scrub while a leaf device is offline (via "zpool offline"),
we will inadvertently clear the DTL (dirty time log) of the offline
device, even though it is still damaged.  When the device comes back
online, we will incompletely resilver it, thinking that the scrub
repaired blocks written before the scrub was started.  The incomplete
resilver can lead to data loss if there is a subsequent failure of a
different leaf device.

The fix is to never clear the DTL of offline devices.  Note that if a
device is onlined while a scrub is in progress, the scrub will be
restarted.

The problem can be worked around by running "zpool scrub" after
"zpool online".

OpenZFS-issue: https://www.illumos.org/issues/8166
OpenZFS-commit: https://github.com/openzfs/openzfs/pull/372
Closes #5806 
Closes #6103
2017-05-10 10:32:39 -07:00
..
abd.c minor improvement to abd_free_pages() 2017-05-02 10:06:18 -07:00
arc.c Add missing arc_free_cksum() to arc_release() 2017-05-10 10:25:27 -07:00
blkptr.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
bplist.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
bpobj.c panic in bpobj_space(): null pointer dereference 2017-02-09 10:19:12 -08:00
bptree.c OpenZFS 7082 - bptree_iterate() passes wrong args to zfs_dbgmsg() 2017-01-17 14:49:24 -08:00
bqueue.c Fix coverity defects: CID 147565-147567 2016-10-07 13:19:43 -07:00
dbuf_stats.c OpenZFS 6950 - ARC should cache compressed data 2016-09-13 09:58:33 -07:00
dbuf.c OpenZFS 7252 - compressed zfs send / receive 2017-04-26 12:31:43 -07:00
ddt_zap.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
ddt.c Cache ddt_get_dedup_dspace() value if there was no ddt changes 2016-12-02 16:59:35 -07:00
dmu_diff.c OpenZFS 6950 - ARC should cache compressed data 2016-09-13 09:58:33 -07:00
dmu_object.c Clean up by-dnode code in dmu_tx.c 2017-02-24 13:34:26 -08:00
dmu_objset.c Add missing *_destroy/*_fini calls 2017-05-04 19:26:28 -04:00
dmu_send.c OpenZFS 7252 - compressed zfs send / receive 2017-04-26 12:31:43 -07:00
dmu_traverse.c Add TASKQID_INVALID 2016-11-02 12:14:45 -07:00
dmu_tx.c OpenZFS 7801 - add more by-dnode routines (lint) 2017-03-20 12:33:17 -07:00
dmu_zfetch.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
dmu.c Fix unused variable warning 2017-05-05 10:23:58 -07:00
dnode_sync.c OpenZFS 7968 - multi-threaded spa_sync() 2017-03-20 18:36:00 -07:00
dnode.c OpenZFS 7968 - multi-threaded spa_sync() 2017-03-20 18:36:00 -07:00
dsl_bookmark.c OpenZFS 1300 - filename normalization doesn't work for removes 2017-02-02 14:13:41 -08:00
dsl_dataset.c OpenZFS 7968 - multi-threaded spa_sync() 2017-03-20 18:36:00 -07:00
dsl_deadlist.c Add missing *_destroy/*_fini calls 2017-05-04 19:26:28 -04:00
dsl_deleg.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
dsl_destroy.c OpenZFS 7254 - ztest failed assertion in ztest_dataset_dirobj_verify: dirobjs + 1 == usedobjs 2017-01-27 11:43:42 -08:00
dsl_dir.c OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
dsl_pool.c Add missing *_destroy/*_fini calls 2017-05-04 19:26:28 -04:00
dsl_prop.c Fix dsl_props_set_sync_impl to work with nested nvlist 2016-12-20 18:46:59 -08:00
dsl_scan.c OpenZFS 7254 - ztest failed assertion in ztest_dataset_dirobj_verify: dirobjs + 1 == usedobjs 2017-01-27 11:43:42 -08:00
dsl_synctask.c Illumos 4951 - ZFS administrative commands should use reserved space 2015-05-04 09:41:10 -07:00
dsl_userhold.c OpenZFS 6314 - buffer overflow in dsl_dataset_name 2016-06-28 13:47:03 -07:00
edonr_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
fm.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
gzip.c GZIP compression offloading with QAT accelerator 2017-03-22 17:58:47 -07:00
lz4.c OpenZFS 7252 - compressed zfs send / receive 2017-04-26 12:31:43 -07:00
lzjb.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
Makefile.in GZIP compression offloading with QAT accelerator 2017-03-22 17:58:47 -07:00
metaslab.c OpenZFS 8023 - Panic destroying a metaslab deferred range tree 2017-04-09 16:12:35 -07:00
multilist.c OpenZFS 7968 - multi-threaded spa_sync() 2017-03-20 18:36:00 -07:00
pathname.c Add pn_alloc()/pn_free() functions 2016-04-21 09:49:25 -07:00
policy.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
qat_compress.c Change U16 to U32 due to atomic_inc_32_nv 2017-04-25 17:41:58 -07:00
qat_compress.h GZIP compression offloading with QAT accelerator 2017-03-22 17:58:47 -07:00
range_tree.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
refcount.c Linux 4.11 compat: avoid refcount_t name conflict 2017-02-28 16:10:18 -08:00
rrwlock.c Fix spelling 2017-01-03 11:31:18 -06:00
sa.c OpenZFS 8061 - sa_find_idx_tab can be declared more type-safely 2017-04-14 11:11:28 -07:00
sha256.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
skein_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
spa_boot.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
spa_config.c Fix spelling 2017-01-03 11:31:18 -06:00
spa_errlog.c Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t 2014-08-06 14:48:41 -07:00
spa_history.c Fix indefinite article 2016-08-11 11:23:49 -07:00
spa_misc.c Fix size inflation in spa_get_worst_case_asize() 2017-04-10 15:28:21 -07:00
spa_stats.c Fix spelling 2017-01-03 11:31:18 -06:00
spa.c OpenZFS 5120 - zfs should allow large block/gzip/raidz boot pool (loader project) 2017-04-13 09:40:00 -07:00
space_map.c OpenZFS 8023 - Panic destroying a metaslab deferred range tree 2017-04-09 16:12:35 -07:00
space_reftree.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
trace.c OpenZFS 6531 - Provide mechanism to artificially limit disk performance 2016-05-26 10:11:51 -07:00
txg.c Refactor txg history kstat 2016-12-02 16:57:49 -07:00
uberblock.c Illumos 5347 - idle pool may run itself out of space 2015-07-14 10:35:21 -07:00
unique.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
vdev_cache.c Fix wrong offset args in vdev_cache_write 2017-03-28 11:06:22 -07:00
vdev_disk.c OpenZFS 7448 - ZFS doesn't notice when disk vdevs have no write cache 2017-02-04 09:23:50 -08:00
vdev_file.c Linux 4.12 compat: PF_FSTRANS was removed 2017-05-09 10:38:46 -07:00
vdev_label.c Write label 2,3 uberblocks when vdev expands 2017-05-02 13:55:24 -07:00
vdev_mirror.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_missing.c Illumos #5244 - zio pipeline callers should explicitly invoke next stage 2015-04-30 15:07:47 -07:00
vdev_queue.c Increase zfs_vdev_async_write_min_active to 2 2017-04-14 14:03:44 -07:00
vdev_raidz_math_aarch64_neon_common.h ABD raidz NEON support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_aarch64_neon.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math_aarch64_neonx2.c ABD raidz NEON support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_avx2.c ABD raidz avx512f support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_avx512bw.c ABD: Adapt avx512bw raidz assembly 2016-12-15 17:31:33 -08:00
vdev_raidz_math_avx512f.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
vdev_raidz_math_impl.h codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math_scalar.c ABD Vectorized raidz 2016-11-29 14:34:33 -08:00
vdev_raidz_math_sse2.c ABD raidz avx512f support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_ssse3.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz.c Remove dependency on linear ABD 2017-03-29 12:24:51 -07:00
vdev_root.c Illumos #3598 2013-10-31 14:58:04 -07:00
vdev.c OpenZFS 8166 - zpool scrub thinks it repaired offline device 2017-05-10 10:32:39 -07:00
zap_leaf.c OpenZFS 1300 - filename normalization doesn't work for removes 2017-02-02 14:13:41 -08:00
zap_micro.c Add missing *_destroy/*_fini calls 2017-05-04 19:26:28 -04:00
zap.c Add missing *_destroy/*_fini calls 2017-05-04 19:26:28 -04:00
zfeature_common.c OpenZFS 2932 - support crash dumps to raidz, etc. pools 2017-04-10 10:24:17 -07:00
zfeature.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zfs_acl.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_byteswap.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
zfs_ctldir.c Linux 4.12 compat: CURRENT_TIME removed 2017-05-10 09:30:48 -07:00
zfs_debug.c OpenZFS 7503 - zfs-test should tail ::zfs_dbgmsg on test failure 2017-04-12 13:36:48 -07:00
zfs_dir.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_fm.c Skip rate limiting events in zfs_ereport_post 2017-04-11 18:37:45 -07:00
zfs_fuid.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_ioctl.c Add property overriding (-o|-x) to 'zfs receive' 2017-05-09 16:21:09 -07:00
zfs_log.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zfs_onexit.c zfsdev_getminor() should check for invalid file handles 2015-06-22 17:02:13 -07:00
zfs_replay.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_rlock.c Fix spelling 2017-01-03 11:31:18 -06:00
zfs_sa.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_vfsops.c Linux 4.12 compat: super_setup_bdi_name() 2017-05-02 09:46:18 -07:00
zfs_vnops.c Fix lseek result when dnode is dirty 2017-04-24 09:38:31 -07:00
zfs_znode.c Add missing *_destroy/*_fini calls 2017-05-04 19:26:28 -04:00
zil.c OpenZFS 3821 - Race in rollback, zil close, and zil flush 2017-03-23 18:20:58 -07:00
zio_checksum.c Remove dependency on linear ABD 2017-03-29 12:24:51 -07:00
zio_compress.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
zio_inject.c Compile zio.h and zio_impl.h mutual include 2016-12-01 16:36:25 -07:00
zio.c Guarantee PAGESIZE alignment for large zio buffers 2017-05-02 10:04:30 -07:00
zle.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
zpl_ctldir.c Linux 4.12 compat: CURRENT_TIME removed 2017-05-10 09:30:48 -07:00
zpl_export.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
zpl_file.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zpl_inode.c Linux 4.12 compat: CURRENT_TIME removed 2017-05-10 09:30:48 -07:00
zpl_super.c Restructure mount option handling 2017-03-10 09:51:41 -08:00
zpl_xattr.c Linux 4.12 compat: CURRENT_TIME removed 2017-05-10 09:30:48 -07:00
zrlock.c OpenZFS 3746 - ZRLs are racy 2017-01-23 10:35:58 -08:00
zvol.c Default to zvol_request_async=0 2017-05-04 18:01:50 -04:00