95 lines
3.3 KiB
Groff
95 lines
3.3 KiB
Groff
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.\" CDDL HEADER START
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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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