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.\"
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.\"
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.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved.
.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved.
.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved.
.\" Copyright (c) 2017 Datto Inc.
.\" Copyright (c) 2018 George Melikov. All Rights Reserved.
.\" Copyright 2017 Nexenta Systems, Inc.
.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
.\"
.Dd August 9, 2019
.Dt ZPOOL-REMOVE 8
.Os
.Sh NAME
.Nm zpool-remove
.Nd Remove a device from a ZFS storage pool
.Sh SYNOPSIS
.Nm zpool
.Cm remove
.Op Fl npw
.Ar pool Ar device Ns ...
.Nm zpool
.Cm remove
.Fl s
.Ar pool
.Sh DESCRIPTION
.Bl -tag -width Ds
.It Xo
.Nm zpool
.Cm remove
.Op Fl npw
.Ar pool Ar device Ns ...
.Xc
Removes the specified device from the pool.
This command supports removing hot spare, cache, log, and both mirrored and
non-redundant primary top-level vdevs, including dedup and special vdevs.
When the primary pool storage includes a top-level raidz vdev only hot spare,
cache, and log devices can be removed.
Note that keys for all encrypted datasets must be loaded for top-level vdevs
to be removed.
.sp
Removing a top-level vdev reduces the total amount of space in the storage pool.
The specified device will be evacuated by copying all allocated space from it to
the other devices in the pool.
In this case, the
.Nm zpool Cm remove
command initiates the removal and returns, while the evacuation continues in
the background.
The removal progress can be monitored with
.Nm zpool Cm status .
If an IO error is encountered during the removal process it will be
cancelled. The
.Sy device_removal
feature flag must be enabled to remove a top-level vdev, see
.Xr zpool-features 5 .
.Pp
A mirrored top-level device (log or data) can be removed by specifying the top-level mirror for the
same.
Non-log devices or data devices that are part of a mirrored configuration can be removed using
the
.Nm zpool Cm detach
command.
.Bl -tag -width Ds
.It Fl n
Do not actually perform the removal ("no-op").
Instead, print the estimated amount of memory that will be used by the
mapping table after the removal completes.
This is nonzero only for top-level vdevs.
.El
.Bl -tag -width Ds
.It Fl p
Used in conjunction with the
.Fl n
flag, displays numbers as parsable (exact) values.
.It Fl w
Waits until the removal has completed before returning.
.El
.It Xo
.Nm zpool
.Cm remove
.Fl s
.Ar pool
.Xc
Stops and cancels an in-progress removal of a top-level vdev.
.El
.Sh SEE ALSO
.Xr zpool-add 8 ,
.Xr zpool-detach 8 ,
.Xr zpool-offline 8 ,
.Xr zpool-labelclear 8 ,
.Xr zpool-replace 8 ,
.Xr zpool-split 8
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