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mirror_zfs/module/zfs
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Brian Behlendorf b0cfb480ca zed: Add deadman-slot_off.sh zedlet 
Optionally turn off disk's enclosure slot if an I/O is hung
triggering the deadman.

It's possible for outstanding I/O to a misbehaving SCSI disk to
neither promptly complete or return an error.  This can occur due
to retry and recovery actions taken by the SCSI layer, driver, or
disk.  When it occurs the pool will be unresponsive even though
there may be sufficient redundancy configured to proceeded without
this single disk.

When a hung I/O is detected by the kmods it will be posted as a
deadman event.  By default an I/O is considered to be hung after
5 minutes.  This value can be changed with the zfs_deadman_ziotime_ms
module parameter.  If ZED_POWER_OFF_ENCLOSURE_SLOT_ON_DEADMAN is set
the disk's enclosure slot will be powered off causing the outstanding
I/O to fail.  The ZED will then handle this like a normal disk failure.
By default ZED_POWER_OFF_ENCLOSURE_SLOT_ON_DEADMAN is not set.

As part of this change `zfs_deadman_events_per_second` is added
to control the ratelimitting of deadman events independantly of
delay events.  In practice, a single deadman event is sufficient
and more aren't particularly useful.

Alphabetize the zfs_deadman_* entries in zfs.4.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #16226
2024-11-04 10:49:53 -08:00
..
abd.c abd: add page iterator 2024-03-28 13:29:46 -07:00
aggsum.c
arc.c Enable L2 cache of all (MRU+MFU) metadata but MFU data only 2024-08-27 14:53:03 -07:00
blake3_zfs.c blake3: fix up bogus checksums in face of cpu migration 2023-05-01 17:21:27 -07:00
blkptr.c
bplist.c Use list_remove_head() where possible. 2023-06-09 10:12:52 -07:00
bpobj.c Add explicit prefetches to bpobj_iterate(). 2023-07-21 16:35:12 -07:00
bptree.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
bqueue.c Batch enqueue/dequeue for bqueue 2023-01-10 13:39:22 -08:00
brt.c BRT: Skip getting length in brt_entry_lookup() 2024-04-19 10:13:38 -07:00
btree.c Replace P2ALIGN with P2ALIGN_TYPED and delete P2ALIGN. 2024-05-13 10:27:38 -05:00
dataset_kstats.c Fix null ptr deref when renaming a zvol with snaps and snapdev=visible (#16316) 2024-08-22 15:42:49 -07:00
dbuf_stats.c Revert "Reduce dbuf_find() lock contention" 2022-09-22 12:59:41 -07:00
dbuf.c Cleanup DB_DNODE() macros usage 2024-11-04 10:34:48 -08:00
ddt_zap.c Pack our DDT ZAPs a bit denser. 2023-06-30 09:42:02 -07:00
ddt.c ddt_addref: remove unnecessary phys fill when refcount is 0 2023-06-30 09:01:58 -07:00
dmu_diff.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
dmu_object.c Replace P2ALIGN with P2ALIGN_TYPED and delete P2ALIGN. 2024-05-13 10:27:38 -05:00
dmu_objset.c Slightly improve dnode hash 2024-05-29 08:54:19 -07:00
dmu_recv.c ZAP: Massively switch to _by_dnode() interfaces 2024-04-19 10:13:38 -07:00
dmu_redact.c Cleanup: Remove constant comparisons reported by CodeQL 2023-03-08 13:51:46 -08:00
dmu_send.c Don't panic on unencrypted block in encrypted dataset 2024-01-08 16:11:39 -08:00
dmu_traverse.c Fix prefetching of indirect blocks while destroying 2023-03-24 10:20:07 -07:00
dmu_tx.c Cleanup DB_DNODE() macros usage 2024-11-04 10:34:48 -08:00
dmu_zfetch.c Add prefetch property 2024-04-30 10:01:15 -07:00
dmu.c Cleanup DB_DNODE() macros usage 2024-11-04 10:34:48 -08:00
dnode_sync.c free_blocks(): Fix reports from 2016 PVS Studio FreeBSD report 2023-01-23 13:12:37 -08:00
dnode.c Cleanup DB_DNODE() macros usage 2024-11-04 10:34:48 -08:00
dsl_bookmark.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
dsl_crypt.c Allow block cloning across encrypted datasets 2024-01-08 16:11:39 -08:00
dsl_dataset.c head_errlog: fix use-after-free 2024-07-15 09:07:33 -07:00
dsl_deadlist.c Refactor dmu_prefetch(). 2024-04-19 10:13:38 -07:00
dsl_deleg.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
dsl_destroy.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
dsl_dir.c Fix ENOSPC for extended quota 2023-09-28 14:28:21 -07:00
dsl_pool.c Remove lock from dsl_pool_need_dirty_delay() 2023-11-06 16:46:55 -08:00
dsl_prop.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
dsl_scan.c Fix scn_queue races on very old pools 2024-05-29 08:54:19 -07:00
dsl_synctask.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
dsl_userhold.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
edonr_zfs.c Remove unused Edon-R variants 2023-03-14 15:59:58 -07:00
fm.c Use list_remove_head() where possible. 2023-06-09 10:12:52 -07:00
gzip.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
hkdf.c
lz4_zfs.c
lz4.c
lzjb.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
metaslab.c Some improvements to metaslabs eviction 2024-07-17 14:54:47 -07:00
mmp.c vdev probe to slow disk can stall mmp write checker 2024-04-30 10:01:15 -07:00
multilist.c L2ARC: Relax locking during write 2024-04-19 10:13:38 -07:00
objlist.c
pathname.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
range_tree.c btree: Implement faster binary search algorithm 2023-05-26 10:03:12 -07:00
refcount.c Switch refcount tracking from lists to AVL-trees. 2023-06-14 08:02:27 -07:00
rrwlock.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
sa.c Cleanup DB_DNODE() macros usage 2024-11-04 10:34:48 -08:00
sha2_zfs.c Add generic implementation handling and SHA2 impl 2023-03-02 13:52:21 -08:00
skein_zfs.c
spa_checkpoint.c Cleanup: 64-bit kernel module parameters should use fixed width types 2022-10-13 10:03:29 -07:00
spa_config.c Add mutex_enter_interruptible() for interruptible sleeping IOCTLs 2023-11-06 16:47:41 -08:00
spa_errlog.c Update the MOS directory on spa_upgrade_errlog() 2023-09-19 08:51:00 -07:00
spa_history.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
spa_log_spacemap.c Extend import_progress kstat with a notes field 2024-04-29 17:45:53 -07:00
spa_misc.c Extend import_progress kstat with a notes field 2024-04-29 17:45:53 -07:00
spa_stats.c Cleanup: Specify unsignedness on things that should not be signed 2022-09-27 16:42:41 -07:00
spa.c Some improvements to metaslabs eviction 2024-07-17 14:54:47 -07:00
space_map.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
space_reftree.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
THIRDPARTYLICENSE.cityhash
THIRDPARTYLICENSE.cityhash.descrip
txg.c vdev probe to slow disk can stall mmp write checker 2024-04-30 10:01:15 -07:00
uberblock.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
unique.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_draid_rand.c
vdev_draid.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
vdev_indirect_births.c
vdev_indirect_mapping.c
vdev_indirect.c Don't emit cksum_{actual_expected} in ereport.fs.zfs.checksum events 2023-07-21 16:35:12 -07:00
vdev_initialize.c Add the ability to uninitialize 2023-05-18 10:02:20 -07:00
vdev_label.c vdev probe to slow disk can stall mmp write checker 2024-04-30 10:01:15 -07:00
vdev_mirror.c Improve too large physical ashift handling 2022-09-08 10:30:53 -07:00
vdev_missing.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_queue.c Fix accounting error for pending sync IO ops in zpool iostat 2023-11-16 14:23:03 -08:00
vdev_raidz_math_aarch64_neon_common.h Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_raidz_math_aarch64_neon.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_raidz_math_aarch64_neonx2.c Fix Clang 15 compilation errors 2022-11-30 13:46:26 -08:00
vdev_raidz_math_avx2.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_raidz_math_avx512bw.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_raidz_math_avx512f.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_raidz_math_impl.h Cleanup Raid-Z Typo fixes 2022-09-06 09:43:21 -07:00
vdev_raidz_math_powerpc_altivec_common.h Linux ppc64le ieee128 compat: Do not redefine __asm on external headers 2023-01-13 10:58:58 -08:00
vdev_raidz_math_powerpc_altivec.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_raidz_math_scalar.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_raidz_math_sse2.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_raidz_math_ssse3.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_raidz_math.c Miscellaneous FreBSD compilation bugfixes 2023-04-06 10:35:02 -07:00
vdev_raidz.c GCC: Fixes for gcc 14 on Fedora 40 2024-04-29 13:50:05 -07:00
vdev_rebuild.c Tweak rebuild in-flight hard limit 2023-10-03 09:06:07 -07:00
vdev_removal.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
vdev_root.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
vdev_trim.c Autotrim High Load Average Fix 2024-01-18 11:33:29 -08:00
vdev.c zed: Add deadman-slot_off.sh zedlet 2024-11-04 10:49:53 -08:00
zap_leaf.c ZAP: Some cleanups/micro-optimizations 2024-04-19 10:13:38 -07:00
zap_micro.c ZAP: Massively switch to _by_dnode() interfaces 2024-04-19 10:13:38 -07:00
zap.c ZAP: Fix leaf references on zap_expand_leaf() errors 2024-05-29 08:54:19 -07:00
zcp_get.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
zcp_global.c
zcp_iter.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
zcp_set.c
zcp_synctask.c Add zfs.sync.snapshot_rename 2022-09-02 13:31:19 -07:00
zcp.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
zfeature.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zfs_byteswap.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zfs_chksum.c Add generic implementation handling and SHA2 impl 2023-03-02 13:52:21 -08:00
zfs_fm.c Add slow disk diagnosis to ZED 2024-04-29 13:50:05 -07:00
zfs_fuid.c Use list_remove_head() where possible. 2023-06-09 10:12:52 -07:00
zfs_impl.c Add generic implementation handling and SHA2 impl 2023-03-02 13:52:21 -08:00
zfs_ioctl.c vdev probe to slow disk can stall mmp write checker 2024-04-30 10:01:15 -07:00
zfs_log.c zfs_log: add flex array fields to log record structs 2024-11-04 10:34:48 -08:00
zfs_onexit.c Use list_remove_head() where possible. 2023-06-09 10:12:52 -07:00
zfs_quota.c Implementation of block cloning for ZFS 2023-03-10 11:59:53 -08:00
zfs_ratelimit.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zfs_replay.c zfs_log: add flex array fields to log record structs 2024-11-04 10:34:48 -08:00
zfs_rlock.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zfs_sa.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zfs_vnops.c Fix corruption caused by mmap flushing problems 2024-03-29 17:10:04 -07:00
zil.c zfs: add bounds checking to zil_parse (#16308) 2024-08-22 15:12:54 -07:00
zio_checksum.c ZIL: Assert record sizes in different places 2024-01-08 16:11:39 -08:00
zio_compress.c Skip memory allocation when compressing holes 2023-02-27 14:41:02 -08:00
zio_inject.c vdev probe to slow disk can stall mmp write checker 2024-04-30 10:01:15 -07:00
zio.c vdev probe to slow disk can stall mmp write checker 2024-04-30 10:01:15 -07:00
zle.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zrlock.c Micro-optimize zrl_remove() 2022-11-29 09:26:03 -08:00
zthr.c
zvol.c Refactor dmu_prefetch(). 2024-04-19 10:13:38 -07:00