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5815f7ac30
mirror_zfs/module/zfs
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Tom Caputi 5815f7ac30 Fix stalled txg with repeated noop scans 
Currently, the DSL scan code figures out when it should suspend
processing and allow a txg to continue by calling the function
dsl_scan_check_suspend(). Unfortunately, this function only
allows the scan to suspend at a level 0 block. In the event that
the system is scanning a bunch of empty snapshots or a resilver
is running with a high enough scn_cur_min_txg, the scan will
stop processing each dataset at the root level, deciding it
has nothing left to do. This means that the check_suspend
function is never called and the txg remains stuck until a
dataset is found that has data to scan.

This patch fixes the problem by allowing scans to suspend at
the root level of the objset. For backwards compatibility, we
use the bookmark <objsetid, 0, 0, 0> when we suspend here so
that older versions of the code will work as intended.

Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #9300
2019-09-11 11:16:48 -07:00
..
aggsum.c OpenZFS 9688 - aggsum_fini leaks memory 2018-10-19 12:08:03 -07:00
arc.c Enable SIMD for encryption 2019-09-10 10:45:46 -07:00
blkptr.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
bplist.c Fast Clone Deletion 2019-07-26 10:54:14 -07:00
bpobj.c Fast Clone Deletion 2019-07-26 10:54:14 -07:00
bptree.c Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
bqueue.c Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
cityhash.c OpenZFS 8484 - Implement aggregate sum and use for arc counters 2018-06-06 09:35:59 -07:00
dataset_kstats.c Fix panic on DilOS with kstat per dataset statistics 2019-09-03 12:12:31 -07:00
dbuf_stats.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dbuf.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
ddt_zap.c fat zap should prefetch when iterating 2019-06-12 13:13:09 -07:00
ddt.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dmu_diff.c Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
dmu_object.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dmu_objset.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
dmu_recv.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dmu_redact.c Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
dmu_send.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dmu_traverse.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dmu_tx.c Improve performance by using dmu_tx_hold_*_by_dnode() 2019-07-30 09:18:30 -07:00
dmu_zfetch.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dmu.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dnode_sync.c Decrease contention on dn_struct_rwlock 2019-07-08 13:18:50 -07:00
dnode.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
dsl_bookmark.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
dsl_crypt.c Enable SIMD for encryption 2019-09-10 10:45:46 -07:00
dsl_dataset.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dsl_deadlist.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dsl_deleg.c Update build system and packaging 2018-05-29 16:00:33 -07:00
dsl_destroy.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
dsl_dir.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
dsl_pool.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
dsl_prop.c Update build system and packaging 2018-05-29 16:00:33 -07:00
dsl_scan.c Fix stalled txg with repeated noop scans 2019-09-11 11:16:48 -07:00
dsl_synctask.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
dsl_userhold.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
edonr_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
fm.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
gzip.c OpenZFS restructuring - move platform specific sources 2019-09-06 11:26:26 -07:00
hkdf.c Encryption patch follow-up 2017-10-11 16:54:48 -04:00
lz4.c Reword comment in lz4_compress_zfs 2019-05-02 16:46:04 -07:00
lzjb.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
Makefile.in OpenZFS restructuring - move platform specific sources 2019-09-06 11:26:26 -07:00
metaslab.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
mmp.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
multilist.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
objlist.c Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
pathname.c Disable unused pathname::pn_path* (unneeded in Linux) 2019-07-15 13:57:56 -07:00
range_tree.c Metaslab max_size should be persisted while unloaded 2019-08-05 14:34:27 -07:00
refcount.c Prevent race in blkptr_verify against device removal 2019-08-13 21:24:43 -06:00
rrwlock.c 8659 static dtrace probes unavailable on non-GPL modules 2019-07-08 11:20:53 -07:00
sa.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
sha256.c OpenZFS restructuring - move platform specific sources 2019-09-06 11:26:26 -07:00
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_checkpoint.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
spa_config.c Fix /etc/hostid on root pool deadlock 2019-09-10 13:42:30 -07:00
spa_errlog.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
spa_history.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
spa_log_spacemap.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
spa_misc.c Fix /etc/hostid on root pool deadlock 2019-09-10 13:42:30 -07:00
spa.c Fix /etc/hostid on root pool deadlock 2019-09-10 13:42:30 -07:00
space_map.c Log Spacemap Project 2019-07-16 10:11:49 -07:00
space_reftree.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
THIRDPARTYLICENSE.cityhash OpenZFS 8484 - Implement aggregate sum and use for arc counters 2018-06-06 09:35:59 -07:00
THIRDPARTYLICENSE.cityhash.descrip OpenZFS 8484 - Implement aggregate sum and use for arc counters 2018-06-06 09:35:59 -07:00
trace.c 8659 static dtrace probes unavailable on non-GPL modules 2019-07-08 11:20:53 -07:00
txg.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
uberblock.c MMP interval and fail_intervals in uberblock 2019-03-21 12:47:57 -07:00
unique.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
vdev_cache.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
vdev_indirect_births.c Fixes: #8934 Large kmem_alloc 2019-07-10 15:54:49 -07:00
vdev_indirect_mapping.c Get rid of space_map_update() for ms_synced_length 2019-02-12 10:38:11 -08:00
vdev_indirect.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
vdev_initialize.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
vdev_label.c panic in removal_remap test on 4K devices 2019-06-13 13:12:39 -07:00
vdev_mirror.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
vdev_missing.c Update vdev_ops_t from illumos 2019-06-20 18:29:02 -07:00
vdev_queue.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
vdev_raidz_math_aarch64_neon_common.h OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
vdev_raidz_math_aarch64_neon.c Linux 5.0 compat: SIMD compatibility 2019-07-12 09:31:20 -07:00
vdev_raidz_math_aarch64_neonx2.c Linux 5.0 compat: SIMD compatibility 2019-07-12 09:31:20 -07:00
vdev_raidz_math_avx2.c OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
vdev_raidz_math_avx512bw.c OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
vdev_raidz_math_avx512f.c OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
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 Linux 5.3: Fix switch() fall though compiler errors 2019-08-21 09:29:23 -07:00
vdev_raidz_math_sse2.c OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
vdev_raidz_math_ssse3.c OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00
vdev_raidz_math.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
vdev_raidz.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
vdev_removal.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
vdev_root.c Update vdev_ops_t from illumos 2019-06-20 18:29:02 -07:00
vdev_trim.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
vdev.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
zap_leaf.c Off-by-one in zap_leaf_array_create() 2019-01-18 09:58:46 -08:00
zap_micro.c fat zap should prefetch when iterating 2019-06-12 13:13:09 -07:00
zap.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
zcp_get.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
zcp_global.c OpenZFS 8600 - ZFS channel programs - snapshot 2018-02-08 15:29:24 -08:00
zcp_iter.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
zcp_synctask.c OpenZFS 9166 - zfs storage pool checkpoint 2018-06-26 10:07:42 -07:00
zcp.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
zfeature.c Consistently captialize GUID for features 2019-04-16 10:01:51 -07:00
zfs_byteswap.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
zfs_fm.c Add zpool status -s (slow I/Os) and -p (parseable) 2018-11-08 16:47:24 -08:00
zfs_fuid.c Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs_ioctl.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
zfs_log.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
zfs_onexit.c Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs_ratelimit.c Change checksum & IO delay ratelimit values 2018-03-04 17:34:51 -08:00
zfs_replay.c Fix zil replay panic when TX_REMOVE followed by TX_CREATE 2019-08-28 10:42:02 -07:00
zfs_rlock.c OpenZFS 9689 - zfs range lock code should not be zpl-specific 2018-10-11 10:19:33 -07:00
zfs_sa.c Project Quota on ZFS 2018-02-13 14:54:54 -08:00
zil.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
zio_checksum.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
zio_compress.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
zio_inject.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
zio.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
zle.c Fix zle_decompress out of bound access 2018-02-09 10:08:05 -08:00
zrlock.c Update build system and packaging 2018-05-29 16:00:33 -07:00
zthr.c Fast Clone Deletion 2019-07-26 10:54:14 -07:00
zvol.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00