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79bfba2fa8
Use proper names (i.e. zfs-allow and zpool-add) in NAME subsections of zfs/zpool subcommands instead of current "pretty-printed" ones as makewhatis utilities (or some implementations of it, namely the one from mandoc suite used in FreeBSD) look not only at the document title but also in NAME subsection, adding zfs(8)/zpool(8) to search results which is not correct. (Common sense and other utilities splitting subcommands in multiple man pages, e.g. git, do the same.) Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: xtouqh <xtouqh@hotmail.com> Closes #11086
95 lines
3.3 KiB
Groff
95 lines
3.3 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 can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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.\" or http://www.opensolaris.org/os/licensing.
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.\" See the License for the specific language governing permissions
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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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.\" 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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.\"
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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 25, 2020
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.Dt ZPOOL-TRIM 8
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.Os
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.Sh NAME
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.Nm zpool-trim
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.Nd Initiate immediate TRIM operations for all free space in a ZFS storage pool
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.Sh SYNOPSIS
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.Nm zpool
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.Cm trim
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.Op Fl dw
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.Op Fl r Ar rate
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.Op Fl c | Fl s
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.Ar pool
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.Op Ar device Ns ...
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.Sh DESCRIPTION
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.Bl -tag -width Ds
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.It Xo
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.Nm zpool
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.Cm trim
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.Op Fl dw
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.Op Fl c | Fl s
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.Ar pool
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.Op Ar device Ns ...
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.Xc
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Initiates an immediate on-demand TRIM operation for all of the free space in
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a pool. 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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.Pp
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A manual on-demand TRIM operation can be initiated irrespective of the
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.Sy autotrim
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pool property setting. See the documentation for the
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.Sy autotrim
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property above for the types of vdev devices which can be trimmed.
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.Bl -tag -width Ds
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.It Fl d -secure
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Causes a secure TRIM to be initiated. When performing a secure TRIM, the
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device guarantees that data stored on the trimmed blocks has been erased.
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This requires support from the device and is not supported by all SSDs.
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.It Fl r -rate Ar rate
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Controls the rate at which the TRIM operation progresses. Without this
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option TRIM is executed as quickly as possible. The rate, expressed in bytes
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per second, is applied on a per-vdev basis and may be set differently for
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each leaf vdev.
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.It Fl c, -cancel
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Cancel trimming on the specified devices, or all eligible devices if none
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are specified.
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If one or more target devices are invalid or are not currently being
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trimmed, the command will fail and no cancellation will occur on any device.
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.It Fl s -suspend
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Suspend trimming on the specified devices, or all eligible devices if none
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are specified.
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If one or more target devices are invalid or are not currently being
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trimmed, the command will fail and no suspension will occur on any device.
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Trimming can then be resumed by running
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.Nm zpool Cm trim
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with no flags on the relevant target devices.
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.It Fl w -wait
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Wait until the devices are done being trimmed before returning.
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.El
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.El
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.Sh SEE ALSO
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.Xr zpool-initialize 8 ,
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.Xr zpool-wait 8 ,
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.Xr zpoolprops 8
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