zfs/man/man8/zpool-status.8

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.Dd March 16, 2022
.Dt ZPOOL-STATUS 8
.Os
.
.Sh NAME
.Nm zpool-status
.Nd show detailed health status for ZFS storage pools
.Sh SYNOPSIS
.Nm zpool
.Cm status
.Op Fl DegiLpPstvx
.Op Fl T Sy u Ns | Ns Sy d
.Op Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns
.Oo Ar pool Oc Ns
.Op Ar interval Op Ar count
.
.Sh DESCRIPTION
Displays the detailed health status for the given pools.
If no
.Ar pool
is specified, then the status of each pool in the system is displayed.
For more information on pool and device health, see the
.Sx Device Failure and Recovery
section of
.Xr zpoolconcepts 7 .
.Pp
If a scrub or resilver is in progress, this command reports the percentage done
and the estimated time to completion.
Both of these are only approximate, because the amount of data in the pool and
the other workloads on the system can change.
.Bl -tag -width Ds
.It Fl -power
Display vdev enclosure slot power status (on or off).
.It Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns
Run a script (or scripts) on each vdev and include the output as a new column
in the
.Nm zpool Cm status
output.
See the
.Fl c
option of
.Nm zpool Cm iostat
for complete details.
.It Fl D
Display a histogram of deduplication statistics, showing the allocated
.Pq physically present on disk
and referenced
.Pq logically referenced in the pool
block counts and sizes by reference count.
Add 'zpool status -e' flag to see unhealthy vdevs When very large pools are present, it can be laborious to find reasons for why a pool is degraded and/or where an unhealthy vdev is. This option filters out vdevs that are ONLINE and with no errors to make it easier to see where the issues are. Root and parents of unhealthy vdevs will always be printed. Testing: ZFS errors and drive failures for multiple vdevs were simulated with zinject. Sample vdev listings with '-e' option - All vdevs healthy NAME STATE READ WRITE CKSUM iron5 ONLINE 0 0 0 - ZFS errors NAME STATE READ WRITE CKSUM iron5 ONLINE 0 0 0 raidz2-5 ONLINE 1 0 0 L23 ONLINE 1 0 0 L24 ONLINE 1 0 0 L37 ONLINE 1 0 0 - Vdev faulted NAME STATE READ WRITE CKSUM iron5 DEGRADED 0 0 0 raidz2-6 DEGRADED 0 0 0 L67 FAULTED 0 0 0 too many errors - Vdev faults and data errors NAME STATE READ WRITE CKSUM iron5 DEGRADED 0 0 0 raidz2-1 DEGRADED 0 0 0 L2 FAULTED 0 0 0 too many errors raidz2-5 ONLINE 1 0 0 L23 ONLINE 1 0 0 L24 ONLINE 1 0 0 L37 ONLINE 1 0 0 raidz2-6 DEGRADED 0 0 0 L67 FAULTED 0 0 0 too many errors - Vdev missing NAME STATE READ WRITE CKSUM iron5 DEGRADED 0 0 0 raidz2-6 DEGRADED 0 0 0 L67 UNAVAIL 3 1 0 - Slow devices when -s provided with -e NAME STATE READ WRITE CKSUM SLOW iron5 DEGRADED 0 0 0 - raidz2-5 DEGRADED 0 0 0 - L10 FAULTED 0 0 0 0 external device fault L51 ONLINE 0 0 0 14 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Cameron Harr <harr1@llnl.gov> Closes #15769
2024-02-07 17:12:12 +00:00
.It Fl e
Only show unhealthy vdevs (not-ONLINE or with errors).
.It Fl g
Display vdev GUIDs instead of the normal device names
These GUIDs can be used in place of device names for the zpool
detach/offline/remove/replace commands.
.It Fl i
Display vdev initialization status.
.It Fl L
Display real paths for vdevs resolving all symbolic links.
This can be used to look up the current block device name regardless of the
.Pa /dev/disk/
path used to open it.
.It Fl p
Display numbers in parsable (exact) values.
.It Fl P
Display full paths for vdevs instead of only the last component of
the path.
This can be used in conjunction with the
.Fl L
flag.
.It Fl s
Display the number of leaf vdev slow I/O operations.
This is the number of I/O operations that didn't complete in
.Sy zio_slow_io_ms
milliseconds
.Pq Sy 30000 No by default .
This does not necessarily mean the I/O operations failed to complete, just took
an
unreasonably long amount of time.
This may indicate a problem with the underlying storage.
.It Fl t
Display vdev TRIM status.
.It Fl T Sy u Ns | Ns Sy d
Display a time stamp.
Specify
.Sy u
for a printed representation of the internal representation of time.
See
.Xr time 1 .
Specify
.Sy d
for standard date format.
See
.Xr date 1 .
.It Fl v
Displays verbose data error information, printing out a complete list of all
data errors since the last complete pool scrub.
Enable the head_errlog feature to remove errors In case check_filesystem() does not error out and does not report an error, remove that error block from error lists and logs without requiring a scrub. This can happen when the original file and all snapshots/clones referencing it have been removed. Otherwise zpool status will still report that "Permanent errors have been detected..." without actually reporting any of them. To implement this change the functions introduced in corrective receive were modified to take into account the head_errlog feature. Before this change: ============================= pool: test state: ONLINE status: One or more devices has experienced an error resulting in data corruption. Applications may be affected. action: Restore the file in question if possible. Otherwise restore the entire pool from backup. see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-8A config: NAME STATE READ WRITE CKSUM test ONLINE 0 0 0 /home/user/vdev_a ONLINE 0 0 2 errors: Permanent errors have been detected in the following files: ============================= After this change: ============================= pool: test state: ONLINE status: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected. action: Determine if the device needs to be replaced, and clear the errors using 'zpool clear' or replace the device with 'zpool replace'. see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-9P config: NAME STATE READ WRITE CKSUM test ONLINE 0 0 0 /home/user/vdev_a ONLINE 0 0 2 errors: No known data errors ============================= Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Brian Atkinson <batkinson@lanl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #14813
2023-05-09 15:53:27 +00:00
If the head_errlog feature is enabled and files containing errors have been
removed then the respective filenames will not be reported in subsequent runs
of this command.
.It Fl x
Only display status for pools that are exhibiting errors or are otherwise
unavailable.
Warnings about pools not using the latest on-disk format will not be included.
.El
.
.Sh EXAMPLES
.\" These are, respectively, examples 16 from zpool.8
.\" Make sure to update them bidirectionally
.Ss Example 1 : No Adding output columns
Additional columns can be added to the
.Nm zpool Cm status No and Nm zpool Cm iostat No output with Fl c .
.Bd -literal -compact -offset Ds
.No # Nm zpool Cm status Fl c Pa vendor , Ns Pa model , Ns Pa size
NAME STATE READ WRITE CKSUM vendor model size
tank ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
U1 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
U10 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
U11 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
U12 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
U13 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
U14 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
.No # Nm zpool Cm iostat Fl vc Pa size
capacity operations bandwidth
pool alloc free read write read write size
---------- ----- ----- ----- ----- ----- ----- ----
rpool 14.6G 54.9G 4 55 250K 2.69M
sda1 14.6G 54.9G 4 55 250K 2.69M 70G
---------- ----- ----- ----- ----- ----- ----- ----
.Ed
.
.Sh SEE ALSO
.Xr zpool-events 8 ,
.Xr zpool-history 8 ,
.Xr zpool-iostat 8 ,
.Xr zpool-list 8 ,
.Xr zpool-resilver 8 ,
.Xr zpool-scrub 8 ,
.Xr zpool-wait 8