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This commit adds support for zpool version to output in JSON format using '-j' option. Userland kernel module version is collected in nvlist which is later displayed in JSON format. man page for zpool is updated. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Ameer Hamza <ahamza@ixsystems.com> Signed-off-by: Umer Saleem <usaleem@ixsystems.com> Closes #16217
622 lines
19 KiB
Groff
622 lines
19 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 8
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.Os
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.
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.Sh NAME
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.Nm zpool
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.Nd configure ZFS storage pools
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.Sh SYNOPSIS
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.Nm
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.Fl ?V
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.Nm
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.Cm version
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.Op Fl j
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.Nm
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.Cm subcommand
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.Op Ar arguments
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.
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.Sh DESCRIPTION
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The
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.Nm
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command configures ZFS storage pools.
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A storage pool is a collection of devices that provides physical storage and
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data replication for ZFS datasets.
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All datasets within a storage pool share the same space.
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See
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.Xr zfs 8
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for information on managing datasets.
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.Pp
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For an overview of creating and managing ZFS storage pools see the
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.Xr zpoolconcepts 7
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manual page.
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.
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.Sh SUBCOMMANDS
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All subcommands that modify state are logged persistently to the pool in their
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original form.
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.Pp
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The
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.Nm
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command provides subcommands to create and destroy storage pools, add capacity
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to storage pools, and provide information about the storage pools.
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The following subcommands are supported:
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.Bl -tag -width Ds
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.It Xo
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.Nm
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.Fl ?\&
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.Xc
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Displays a help message.
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.It Xo
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.Nm
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.Fl V , -version
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.Xc
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.It Xo
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.Nm
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.Cm version
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.Op Fl j
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.Xc
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Displays the software version of the
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.Nm
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userland utility and the ZFS kernel module.
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Use
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.Fl j
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option to output in JSON format.
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.El
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.
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.Ss Creation
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.Bl -tag -width Ds
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.It Xr zpool-create 8
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Creates a new storage pool containing the virtual devices specified on the
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command line.
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.It Xr zpool-initialize 8
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Begins initializing by writing to all unallocated regions on the specified
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devices, or all eligible devices in the pool if no individual devices are
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specified.
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.El
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.
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.Ss Destruction
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.Bl -tag -width Ds
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.It Xr zpool-destroy 8
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Destroys the given pool, freeing up any devices for other use.
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.It Xr zpool-labelclear 8
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Removes ZFS label information from the specified
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.Ar device .
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.El
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.
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.Ss Virtual Devices
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.Bl -tag -width Ds
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.It Xo
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.Xr zpool-attach 8 Ns / Ns Xr zpool-detach 8
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.Xc
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Converts a non-redundant disk into a mirror, or increases
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the redundancy level of an existing mirror
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.Cm ( attach Ns ), or performs the inverse operation (
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.Cm detach Ns ).
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.It Xo
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.Xr zpool-add 8 Ns / Ns Xr zpool-remove 8
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.Xc
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Adds the specified virtual devices to the given pool,
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or removes the specified device from the pool.
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.It Xr zpool-replace 8
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Replaces an existing device (which may be faulted) with a new one.
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.It Xr zpool-split 8
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Creates a new pool by splitting all mirrors in an existing pool (which decreases
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its redundancy).
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.El
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.
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.Ss Properties
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Available pool properties listed in the
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.Xr zpoolprops 7
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manual page.
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.Bl -tag -width Ds
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.It Xr zpool-list 8
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Lists the given pools along with a health status and space usage.
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.It Xo
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.Xr zpool-get 8 Ns / Ns Xr zpool-set 8
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.Xc
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Retrieves the given list of properties
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.Po
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or all properties if
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.Sy all
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is used
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.Pc
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for the specified storage pool(s).
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.El
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.
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.Ss Monitoring
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.Bl -tag -width Ds
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.It Xr zpool-status 8
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Displays the detailed health status for the given pools.
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.It Xr zpool-iostat 8
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Displays logical I/O statistics for the given pools/vdevs.
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Physical I/O operations may be observed via
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.Xr iostat 1 .
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.It Xr zpool-events 8
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Lists all recent events generated by the ZFS kernel modules.
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These events are consumed by the
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.Xr zed 8
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and used to automate administrative tasks such as replacing a failed device
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with a hot spare.
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That manual page also describes the subclasses and event payloads
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that can be generated.
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.It Xr zpool-history 8
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Displays the command history of the specified pool(s) or all pools if no pool is
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specified.
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.El
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.
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.Ss Maintenance
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.Bl -tag -width Ds
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.It Xr zpool-prefetch 8
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Prefetches specific types of pool data.
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.It Xr zpool-scrub 8
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Begins a scrub or resumes a paused scrub.
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.It Xr zpool-checkpoint 8
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Checkpoints the current state of
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.Ar pool ,
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which can be later restored by
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.Nm zpool Cm import Fl -rewind-to-checkpoint .
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.It Xr zpool-trim 8
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Initiates an immediate on-demand TRIM operation for all of the free space in a
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pool.
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This operation informs the underlying storage devices of all blocks
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in the pool which are no longer allocated and allows thinly provisioned
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devices to reclaim the space.
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.It Xr zpool-sync 8
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This command forces all in-core dirty data to be written to the primary
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pool storage and not the ZIL.
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It will also update administrative information including quota reporting.
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Without arguments,
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.Nm zpool Cm sync
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will sync all pools on the system.
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Otherwise, it will sync only the specified pool(s).
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.It Xr zpool-upgrade 8
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Manage the on-disk format version of storage pools.
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.It Xr zpool-wait 8
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Waits until all background activity of the given types has ceased in the given
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pool.
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.El
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.
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.Ss Fault Resolution
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.Bl -tag -width Ds
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.It Xo
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.Xr zpool-offline 8 Ns / Ns Xr zpool-online 8
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.Xc
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Takes the specified physical device offline or brings it online.
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.It Xr zpool-resilver 8
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Starts a resilver.
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If an existing resilver is already running it will be restarted from the
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beginning.
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.It Xr zpool-reopen 8
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Reopen all the vdevs associated with the pool.
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.It Xr zpool-clear 8
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Clears device errors in a pool.
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.El
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.
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.Ss Import & Export
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.Bl -tag -width Ds
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.It Xr zpool-import 8
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Make disks containing ZFS storage pools available for use on the system.
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.It Xr zpool-export 8
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Exports the given pools from the system.
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.It Xr zpool-reguid 8
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Generates a new unique identifier for the pool.
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.El
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.
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.Sh EXIT STATUS
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The following exit values are returned:
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.Bl -tag -compact -offset 4n -width "a"
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.It Sy 0
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Successful completion.
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.It Sy 1
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An error occurred.
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.It Sy 2
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Invalid command line options were specified.
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.El
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.
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.Sh EXAMPLES
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.\" Examples 1, 2, 3, 4, 12, 13 are shared with zpool-create.8.
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.\" Examples 6, 14 are shared with zpool-add.8.
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.\" Examples 7, 16 are shared with zpool-list.8.
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.\" Examples 8 are shared with zpool-destroy.8.
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.\" Examples 9 are shared with zpool-export.8.
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.\" Examples 10 are shared with zpool-import.8.
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.\" Examples 11 are shared with zpool-upgrade.8.
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.\" Examples 15 are shared with zpool-remove.8.
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.\" Examples 17 are shared with zpool-status.8.
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.\" Examples 14, 17 are also shared with zpool-iostat.8.
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.\" Make sure to update them omnidirectionally
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.Ss Example 1 : No Creating a RAID-Z Storage Pool
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The following command creates a pool with a single raidz root vdev that
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consists of six disks:
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.Dl # Nm zpool Cm create Ar tank Sy raidz Pa sda sdb sdc sdd sde sdf
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.
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.Ss Example 2 : No Creating a Mirrored Storage Pool
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The following command creates a pool with two mirrors, where each mirror
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contains two disks:
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.Dl # Nm zpool Cm create Ar tank Sy mirror Pa sda sdb Sy mirror Pa sdc sdd
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.
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.Ss Example 3 : No Creating a ZFS Storage Pool by Using Partitions
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The following command creates a non-redundant pool using two disk partitions:
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.Dl # Nm zpool Cm create Ar tank Pa sda1 sdb2
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.
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.Ss Example 4 : No Creating a ZFS Storage Pool by Using Files
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The following command creates a non-redundant pool using files.
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While not recommended, a pool based on files can be useful for experimental
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purposes.
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.Dl # Nm zpool Cm create Ar tank Pa /path/to/file/a /path/to/file/b
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.
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.Ss Example 5 : No Making a non-mirrored ZFS Storage Pool mirrored
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The following command converts an existing single device
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.Ar sda
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into a mirror by attaching a second device to it,
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.Ar sdb .
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.Dl # Nm zpool Cm attach Ar tank Pa sda sdb
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.
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.Ss Example 6 : No Adding a Mirror to a ZFS Storage Pool
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The following command adds two mirrored disks to the pool
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.Ar tank ,
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assuming the pool is already made up of two-way mirrors.
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The additional space is immediately available to any datasets within the pool.
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.Dl # Nm zpool Cm add Ar tank Sy mirror Pa sda sdb
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.
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.Ss Example 7 : No Listing Available ZFS Storage Pools
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The following command lists all available pools on the system.
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In this case, the pool
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.Ar zion
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is faulted due to a missing device.
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The results from this command are similar to the following:
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.Bd -literal -compact -offset Ds
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.No # Nm zpool Cm list
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NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
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rpool 19.9G 8.43G 11.4G - 33% 42% 1.00x ONLINE -
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tank 61.5G 20.0G 41.5G - 48% 32% 1.00x ONLINE -
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zion - - - - - - - FAULTED -
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.Ed
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.
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.Ss Example 8 : No Destroying a ZFS Storage Pool
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The following command destroys the pool
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.Ar tank
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and any datasets contained within:
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.Dl # Nm zpool Cm destroy Fl f Ar tank
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.
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.Ss Example 9 : No Exporting a ZFS Storage Pool
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The following command exports the devices in pool
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.Ar tank
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so that they can be relocated or later imported:
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.Dl # Nm zpool Cm export Ar tank
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.
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.Ss Example 10 : No Importing a ZFS Storage Pool
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The following command displays available pools, and then imports the pool
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.Ar tank
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for use on the system.
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The results from this command are similar to the following:
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.Bd -literal -compact -offset Ds
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.No # Nm zpool Cm import
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pool: tank
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id: 15451357997522795478
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state: ONLINE
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action: The pool can be imported using its name or numeric identifier.
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config:
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tank ONLINE
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mirror ONLINE
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sda ONLINE
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sdb ONLINE
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.No # Nm zpool Cm import Ar tank
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.Ed
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.
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.Ss Example 11 : No Upgrading All ZFS Storage Pools to the Current Version
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The following command upgrades all ZFS Storage pools to the current version of
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the software:
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.Bd -literal -compact -offset Ds
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.No # Nm zpool Cm upgrade Fl a
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This system is currently running ZFS version 2.
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.Ed
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.
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.Ss Example 12 : No Managing Hot Spares
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The following command creates a new pool with an available hot spare:
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.Dl # Nm zpool Cm create Ar tank Sy mirror Pa sda sdb Sy spare Pa sdc
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.Pp
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If one of the disks were to fail, the pool would be reduced to the degraded
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state.
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The failed device can be replaced using the following command:
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.Dl # Nm zpool Cm replace Ar tank Pa sda sdd
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.Pp
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Once the data has been resilvered, the spare is automatically removed and is
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made available for use should another device fail.
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The hot spare can be permanently removed from the pool using the following
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command:
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.Dl # Nm zpool Cm remove Ar tank Pa sdc
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.
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.Ss Example 13 : No Creating a ZFS Pool with Mirrored Separate Intent Logs
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The following command creates a ZFS storage pool consisting of two, two-way
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mirrors and mirrored log devices:
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.Dl # Nm zpool Cm create Ar pool Sy mirror Pa sda sdb Sy mirror Pa sdc sdd Sy log mirror Pa sde sdf
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.
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.Ss Example 14 : No Adding Cache Devices to a ZFS Pool
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The following command adds two disks for use as cache devices to a ZFS storage
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pool:
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.Dl # Nm zpool Cm add Ar pool Sy cache Pa sdc sdd
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.Pp
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Once added, the cache devices gradually fill with content from main memory.
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Depending on the size of your cache devices, it could take over an hour for
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them to fill.
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Capacity and reads can be monitored using the
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.Cm iostat
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subcommand as follows:
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.Dl # Nm zpool Cm iostat Fl v Ar pool 5
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.
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.Ss Example 15 : No Removing a Mirrored top-level (Log or Data) Device
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The following commands remove the mirrored log device
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.Sy mirror-2
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and mirrored top-level data device
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.Sy mirror-1 .
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.Pp
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Given this configuration:
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.Bd -literal -compact -offset Ds
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pool: tank
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state: ONLINE
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scrub: none requested
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config:
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NAME STATE READ WRITE CKSUM
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tank ONLINE 0 0 0
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mirror-0 ONLINE 0 0 0
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sda ONLINE 0 0 0
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sdb ONLINE 0 0 0
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mirror-1 ONLINE 0 0 0
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sdc ONLINE 0 0 0
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sdd ONLINE 0 0 0
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logs
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mirror-2 ONLINE 0 0 0
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sde ONLINE 0 0 0
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sdf ONLINE 0 0 0
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.Ed
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.Pp
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The command to remove the mirrored log
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.Ar mirror-2 No is :
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.Dl # Nm zpool Cm remove Ar tank mirror-2
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.Pp
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The command to remove the mirrored data
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.Ar mirror-1 No is :
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.Dl # Nm zpool Cm remove Ar tank mirror-1
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.
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.Ss Example 16 : No Displaying expanded space on a device
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The following command displays the detailed information for the pool
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.Ar data .
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This pool is comprised of a single raidz vdev where one of its devices
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increased its capacity by 10 GiB.
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In this example, the pool will not be able to utilize this extra capacity until
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all the devices under the raidz vdev have been expanded.
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.Bd -literal -compact -offset Ds
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.No # Nm zpool Cm list Fl v Ar data
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NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
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data 23.9G 14.6G 9.30G - 48% 61% 1.00x ONLINE -
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raidz1 23.9G 14.6G 9.30G - 48%
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sda - - - - -
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sdb - - - 10G -
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sdc - - - - -
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.Ed
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.
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.Ss Example 17 : 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 ENVIRONMENT VARIABLES
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.Bl -tag -compact -width "ZPOOL_STATUS_NON_NATIVE_ASHIFT_IGNORE"
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.It Sy ZFS_ABORT
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|
Cause
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.Nm
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|
to dump core on exit for the purposes of running
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.Sy ::findleaks .
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.It Sy ZFS_COLOR
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|
Use ANSI color in
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.Nm zpool Cm status
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and
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.Nm zpool Cm iostat
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|
output.
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|
.It Sy ZPOOL_AUTO_POWER_ON_SLOT
|
|
Automatically attempt to turn on the drives enclosure slot power to a drive when
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running the
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.Nm zpool Cm online
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or
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.Nm zpool Cm clear
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commands.
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This has the same effect as passing the
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.Fl -power
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option to those commands.
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.It Sy ZPOOL_POWER_ON_SLOT_TIMEOUT_MS
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|
The maximum time in milliseconds to wait for a slot power sysfs value
|
|
to return the correct value after writing it.
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|
For example, after writing "on" to the sysfs enclosure slot power_control file,
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it can take some time for the enclosure to power down the slot and return
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|
"on" if you read back the 'power_control' value.
|
|
Defaults to 30 seconds (30000ms) if not set.
|
|
.It Sy ZPOOL_IMPORT_PATH
|
|
The search path for devices or files to use with the pool.
|
|
This is a colon-separated list of directories in which
|
|
.Nm
|
|
looks for device nodes and files.
|
|
Similar to the
|
|
.Fl d
|
|
option in
|
|
.Nm zpool import .
|
|
.It Sy ZPOOL_IMPORT_UDEV_TIMEOUT_MS
|
|
The maximum time in milliseconds that
|
|
.Nm zpool import
|
|
will wait for an expected device to be available.
|
|
.It Sy ZPOOL_STATUS_NON_NATIVE_ASHIFT_IGNORE
|
|
If set, suppress warning about non-native vdev ashift in
|
|
.Nm zpool Cm status .
|
|
The value is not used, only the presence or absence of the variable matters.
|
|
.It Sy ZPOOL_VDEV_NAME_GUID
|
|
Cause
|
|
.Nm
|
|
subcommands to output vdev guids by default.
|
|
This behavior is identical to the
|
|
.Nm zpool Cm status Fl g
|
|
command line option.
|
|
.It Sy ZPOOL_VDEV_NAME_FOLLOW_LINKS
|
|
Cause
|
|
.Nm
|
|
subcommands to follow links for vdev names by default.
|
|
This behavior is identical to the
|
|
.Nm zpool Cm status Fl L
|
|
command line option.
|
|
.It Sy ZPOOL_VDEV_NAME_PATH
|
|
Cause
|
|
.Nm
|
|
subcommands to output full vdev path names by default.
|
|
This behavior is identical to the
|
|
.Nm zpool Cm status Fl P
|
|
command line option.
|
|
.It Sy ZFS_VDEV_DEVID_OPT_OUT
|
|
Older OpenZFS implementations had issues when attempting to display pool
|
|
config vdev names if a
|
|
.Sy devid
|
|
NVP value is present in the pool's config.
|
|
.Pp
|
|
For example, a pool that originated on illumos platform would have a
|
|
.Sy devid
|
|
value in the config and
|
|
.Nm zpool Cm status
|
|
would fail when listing the config.
|
|
This would also be true for future Linux-based pools.
|
|
.Pp
|
|
A pool can be stripped of any
|
|
.Sy devid
|
|
values on import or prevented from adding
|
|
them on
|
|
.Nm zpool Cm create
|
|
or
|
|
.Nm zpool Cm add
|
|
by setting
|
|
.Sy ZFS_VDEV_DEVID_OPT_OUT .
|
|
.Pp
|
|
.It Sy ZPOOL_SCRIPTS_AS_ROOT
|
|
Allow a privileged user to run
|
|
.Nm zpool Cm status Ns / Ns Cm iostat Fl c .
|
|
Normally, only unprivileged users are allowed to run
|
|
.Fl c .
|
|
.It Sy ZPOOL_SCRIPTS_PATH
|
|
The search path for scripts when running
|
|
.Nm zpool Cm status Ns / Ns Cm iostat Fl c .
|
|
This is a colon-separated list of directories and overrides the default
|
|
.Pa ~/.zpool.d
|
|
and
|
|
.Pa /etc/zfs/zpool.d
|
|
search paths.
|
|
.It Sy ZPOOL_SCRIPTS_ENABLED
|
|
Allow a user to run
|
|
.Nm zpool Cm status Ns / Ns Cm iostat Fl c .
|
|
If
|
|
.Sy ZPOOL_SCRIPTS_ENABLED
|
|
is not set, it is assumed that the user is allowed to run
|
|
.Nm zpool Cm status Ns / Ns Cm iostat Fl c .
|
|
.\" Shared with zfs.8
|
|
.It Sy ZFS_MODULE_TIMEOUT
|
|
Time, in seconds, to wait for
|
|
.Pa /dev/zfs
|
|
to appear.
|
|
Defaults to
|
|
.Sy 10 ,
|
|
max
|
|
.Sy 600 Pq 10 minutes .
|
|
If
|
|
.Pf < Sy 0 ,
|
|
wait forever; if
|
|
.Sy 0 ,
|
|
don't wait.
|
|
.El
|
|
.
|
|
.Sh INTERFACE STABILITY
|
|
.Sy Evolving
|
|
.
|
|
.Sh SEE ALSO
|
|
.Xr zfs 4 ,
|
|
.Xr zpool-features 7 ,
|
|
.Xr zpoolconcepts 7 ,
|
|
.Xr zpoolprops 7 ,
|
|
.Xr zed 8 ,
|
|
.Xr zfs 8 ,
|
|
.Xr zpool-add 8 ,
|
|
.Xr zpool-attach 8 ,
|
|
.Xr zpool-checkpoint 8 ,
|
|
.Xr zpool-clear 8 ,
|
|
.Xr zpool-create 8 ,
|
|
.Xr zpool-destroy 8 ,
|
|
.Xr zpool-detach 8 ,
|
|
.Xr zpool-events 8 ,
|
|
.Xr zpool-export 8 ,
|
|
.Xr zpool-get 8 ,
|
|
.Xr zpool-history 8 ,
|
|
.Xr zpool-import 8 ,
|
|
.Xr zpool-initialize 8 ,
|
|
.Xr zpool-iostat 8 ,
|
|
.Xr zpool-labelclear 8 ,
|
|
.Xr zpool-list 8 ,
|
|
.Xr zpool-offline 8 ,
|
|
.Xr zpool-online 8 ,
|
|
.Xr zpool-prefetch 8 ,
|
|
.Xr zpool-reguid 8 ,
|
|
.Xr zpool-remove 8 ,
|
|
.Xr zpool-reopen 8 ,
|
|
.Xr zpool-replace 8 ,
|
|
.Xr zpool-resilver 8 ,
|
|
.Xr zpool-scrub 8 ,
|
|
.Xr zpool-set 8 ,
|
|
.Xr zpool-split 8 ,
|
|
.Xr zpool-status 8 ,
|
|
.Xr zpool-sync 8 ,
|
|
.Xr zpool-trim 8 ,
|
|
.Xr zpool-upgrade 8 ,
|
|
.Xr zpool-wait 8
|