diff options
Diffstat (limited to 'sys/contrib/openzfs/man/man7/vdevprops.7')
| -rw-r--r-- | sys/contrib/openzfs/man/man7/vdevprops.7 | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/sys/contrib/openzfs/man/man7/vdevprops.7 b/sys/contrib/openzfs/man/man7/vdevprops.7 index acabe6b6613a..0fb28d7db13c 100644 --- a/sys/contrib/openzfs/man/man7/vdevprops.7 +++ b/sys/contrib/openzfs/man/man7/vdevprops.7 @@ -19,9 +19,9 @@ .\" .\" CDDL HEADER END .\" -.\" Copyright (c) 2021 Klara, Inc. +.\" Copyright (c) 2021, 2025, Klara, Inc. .\" -.Dd October 30, 2022 +.Dd July 23, 2024 .Dt VDEVPROPS 7 .Os . @@ -106,11 +106,17 @@ The number of children belonging to this vdev .It Sy read_errors , write_errors , checksum_errors , initialize_errors , trim_errors The number of errors of each type encountered by this vdev .It Sy slow_ios -The number of slow I/Os encountered by this vdev, -These represent I/O operations that didn't complete in +This indicates the number of slow I/O operations encountered by this vdev. +A slow I/O is defined as an operation that did not complete within the .Sy zio_slow_io_ms -milliseconds +threshold in milliseconds .Pq Sy 30000 No by default . +For +.Sy RAIDZ +and +.Sy DRAID +configurations, this value also represents the number of times the vdev was +identified as an outlier and excluded from participating in read I/O operations. .It Sy null_ops , read_ops , write_ops , free_ops , claim_ops , trim_ops The number of I/O operations of each type performed by this vdev .It Xo @@ -150,6 +156,31 @@ The amount of space to reserve for the EFI system partition .It Sy failfast If this device should propagate BIO errors back to ZFS, used to disable failfast. +.It Sy sit_out +Only valid for +.Sy RAIDZ +and +.Sy DRAID +vdevs. +True when a slow disk outlier was detected and the vdev is currently in a sit +out state. +This property can be manually set to cause vdevs to sit out. +It will also be automatically set by the +.Sy autosit +logic if that is enabled. +While sitting out, the vdev will not participate in normal reads, instead its +data will be reconstructed as needed from parity. +.It Sy autosit +Only valid for +.Sy RAIDZ +and +.Sy DRAID +vdevs. +If set, this enables the kernel-level slow disk detection logic. +This logic automatically causes any vdevs that are significant negative +performance outliers to sit out, as described in the +.Sy sit_out +property. .It Sy path The path to the device for this vdev .It Sy allocating |