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62e7d3c89e
This change adds a new `zpool prefetch -t ddt $pool` command which causes a pool's DDT to be loaded into the ARC. The primary goal is to remove the need to "warm" a pool's cache before deduplication stops slowing write performance. It may also provide a way to reload portions of a DDT if they have been flushed due to inactivity. Sponsored-by: iXsystems, Inc. Sponsored-by: Catalogics, Inc. Sponsored-by: Klara, Inc. Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Allan Jude <allan@klarasystems.com> Signed-off-by: Will Andrews <will.andrews@klarasystems.com> Signed-off-by: Fred Weigel <fred.weigel@klarasystems.com> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Signed-off-by: Don Brady <don.brady@klarasystems.com> Co-authored-by: Will Andrews <will.andrews@klarasystems.com> Co-authored-by: Don Brady <don.brady@klarasystems.com> Closes #15890
172 lines
5.7 KiB
Groff
172 lines
5.7 KiB
Groff
.\"
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.\" CDDL HEADER START
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.\"
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.\" The contents of this file are subject to the terms of the
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.\" Common Development and Distribution License (the "License").
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.\" You may not use this file except in compliance with the License.
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.\"
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.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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.\" or https://opensource.org/licenses/CDDL-1.0.
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.\" See the License for the specific language governing permissions
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.\" and limitations under the License.
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.\"
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.\" When distributing Covered Code, include this CDDL HEADER in each
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.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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.\" If applicable, add the following below this CDDL HEADER, with the
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.\" fields enclosed by brackets "[]" replaced with your own identifying
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.\" information: Portions Copyright [yyyy] [name of copyright owner]
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.\"
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.\" CDDL HEADER END
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.\"
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.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved.
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.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved.
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.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved.
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.\" Copyright (c) 2017 Datto Inc.
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.\" Copyright (c) 2018 George Melikov. All Rights Reserved.
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.\" Copyright 2017 Nexenta Systems, Inc.
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.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
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.\"
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.Dd February 14, 2024
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.Dt ZPOOL-STATUS 8
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.Os
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.
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.Sh NAME
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.Nm zpool-status
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.Nd show detailed health status for ZFS storage pools
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.Sh SYNOPSIS
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.Nm zpool
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.Cm status
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.Op Fl DegiLpPstvx
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.Op Fl T Sy u Ns | Ns Sy d
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.Op Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns …
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.Oo Ar pool Oc Ns …
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.Op Ar interval Op Ar count
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.
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.Sh DESCRIPTION
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Displays the detailed health status for the given pools.
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If no
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.Ar pool
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is specified, then the status of each pool in the system is displayed.
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For more information on pool and device health, see the
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.Sx Device Failure and Recovery
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section of
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.Xr zpoolconcepts 7 .
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.Pp
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If a scrub or resilver is in progress, this command reports the percentage done
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and the estimated time to completion.
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Both of these are only approximate, because the amount of data in the pool and
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the other workloads on the system can change.
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.Bl -tag -width Ds
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.It Fl -power
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Display vdev enclosure slot power status (on or off).
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.It Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns …
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Run a script (or scripts) on each vdev and include the output as a new column
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in the
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.Nm zpool Cm status
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output.
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See the
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.Fl c
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option of
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.Nm zpool Cm iostat
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for complete details.
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.It Fl D
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Display a histogram of deduplication statistics, showing the allocated
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.Pq physically present on disk
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and referenced
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.Pq logically referenced in the pool
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block counts and sizes by reference count.
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If repeated, (-DD), also shows statistics on how much of the DDT is resident
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in the ARC.
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.It Fl e
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Only show unhealthy vdevs (not-ONLINE or with errors).
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.It Fl g
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Display vdev GUIDs instead of the normal device names
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These GUIDs can be used in place of device names for the zpool
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detach/offline/remove/replace commands.
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.It Fl i
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Display vdev initialization status.
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.It Fl L
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Display real paths for vdevs resolving all symbolic links.
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This can be used to look up the current block device name regardless of the
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.Pa /dev/disk/
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path used to open it.
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.It Fl p
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Display numbers in parsable (exact) values.
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.It Fl P
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Display full paths for vdevs instead of only the last component of
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the path.
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This can be used in conjunction with the
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.Fl L
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flag.
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.It Fl s
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Display the number of leaf vdev slow I/O operations.
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This is the number of I/O operations that didn't complete in
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.Sy zio_slow_io_ms
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milliseconds
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.Pq Sy 30000 No by default .
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This does not necessarily mean the I/O operations failed to complete, just took
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an
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unreasonably long amount of time.
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This may indicate a problem with the underlying storage.
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.It Fl t
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Display vdev TRIM status.
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.It Fl T Sy u Ns | Ns Sy d
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Display a time stamp.
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Specify
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.Sy u
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for a printed representation of the internal representation of time.
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See
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.Xr time 1 .
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Specify
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.Sy d
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for standard date format.
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See
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.Xr date 1 .
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.It Fl v
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Displays verbose data error information, printing out a complete list of all
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data errors since the last complete pool scrub.
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If the head_errlog feature is enabled and files containing errors have been
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removed then the respective filenames will not be reported in subsequent runs
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of this command.
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.It Fl x
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Only display status for pools that are exhibiting errors or are otherwise
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unavailable.
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Warnings about pools not using the latest on-disk format will not be included.
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.El
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.
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.Sh EXAMPLES
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.\" These are, respectively, examples 16 from zpool.8
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.\" Make sure to update them bidirectionally
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.Ss Example 1 : No Adding output columns
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Additional columns can be added to the
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.Nm zpool Cm status No and Nm zpool Cm iostat No output with Fl c .
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.Bd -literal -compact -offset Ds
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.No # Nm zpool Cm status Fl c Pa vendor , Ns Pa model , Ns Pa size
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NAME STATE READ WRITE CKSUM vendor model size
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tank ONLINE 0 0 0
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mirror-0 ONLINE 0 0 0
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U1 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
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U10 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
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U11 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
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U12 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
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U13 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
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U14 ONLINE 0 0 0 SEAGATE ST8000NM0075 7.3T
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.No # Nm zpool Cm iostat Fl vc Pa size
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capacity operations bandwidth
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pool alloc free read write read write size
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---------- ----- ----- ----- ----- ----- ----- ----
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rpool 14.6G 54.9G 4 55 250K 2.69M
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sda1 14.6G 54.9G 4 55 250K 2.69M 70G
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---------- ----- ----- ----- ----- ----- ----- ----
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.Ed
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.
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.Sh SEE ALSO
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.Xr zpool-events 8 ,
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.Xr zpool-history 8 ,
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.Xr zpool-iostat 8 ,
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.Xr zpool-list 8 ,
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.Xr zpool-resilver 8 ,
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.Xr zpool-scrub 8 ,
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.Xr zpool-wait 8
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