mirror_zfs/module/zcommon
Don Brady cbe882298e
Add slow disk diagnosis to ZED
Slow disk response times can be indicative of a failing drive. ZFS
currently tracks slow I/Os (slower than zio_slow_io_ms) and generates
events (ereport.fs.zfs.delay).  However, no action is taken by ZED,
like is done for checksum or I/O errors.  This change adds slow disk
diagnosis to ZED which is opt-in using new VDEV properties:
  VDEV_PROP_SLOW_IO_N
  VDEV_PROP_SLOW_IO_T

If multiple VDEVs in a pool are undergoing slow I/Os, then it skips
the zpool_vdev_degrade().

Sponsored-By: OpenDrives Inc.
Sponsored-By: Klara Inc.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Rob Wing <rob.wing@klarasystems.com>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Closes #15469
2024-02-08 09:19:52 -08:00
..
cityhash.c Compile cityhash code into libzfs 2020-03-27 09:11:22 -07:00
zfeature_common.c RAID-Z expansion feature 2023-11-08 10:19:41 -08:00
zfs_comutil.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
zfs_deleg.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
zfs_fletcher_aarch64_neon.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_avx512.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_intel.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_sse.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_superscalar4.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher_superscalar.c Drop lying to the compiler in the fletcher4 code 2023-03-24 10:29:19 -07:00
zfs_fletcher.c Miscellaneous FreBSD compilation bugfixes 2023-04-06 10:35:02 -07:00
zfs_namecheck.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zfs_prop.c zvol: Implement zvol threading as a Property 2023-10-31 09:50:32 -07:00
zpool_prop.c Add slow disk diagnosis to ZED 2024-02-08 09:19:52 -08:00
zprop_common.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00