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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 February 25, 2020
+.Dt ZPOOL-TRIM 8
+.Os
+.Sh NAME
+.Nm zpool Ns Pf - Cm trim
+.Nd Initiate immediate TRIM operations for all free space in a ZFS storage pool
+.Sh SYNOPSIS
+.Nm
+.Cm trim
+.Op Fl dw
+.Op Fl r Ar rate
+.Op Fl c | Fl s
+.Ar pool
+.Op Ar device Ns ...
+.Sh DESCRIPTION
+.Bl -tag -width Ds
+.It Xo
+.Nm
+.Cm trim
+.Op Fl dw
+.Op Fl c | Fl s
+.Ar pool
+.Op Ar device Ns ...
+.Xc
+Initiates an immediate on-demand TRIM operation for all of the free space in
+a pool.  This operation informs the underlying storage devices of all blocks
+in the pool which are no longer allocated and allows thinly provisioned
+devices to reclaim the space.
+.Pp
+A manual on-demand TRIM operation can be initiated irrespective of the
+.Sy autotrim
+pool property setting.  See the documentation for the
+.Sy autotrim
+property above for the types of vdev devices which can be trimmed.
+.Bl -tag -width Ds
+.It Fl d -secure
+Causes a secure TRIM to be initiated.  When performing a secure TRIM, the
+device guarantees that data stored on the trimmed blocks has been erased.
+This requires support from the device and is not supported by all SSDs.
+.It Fl r -rate Ar rate
+Controls the rate at which the TRIM operation progresses.  Without this
+option TRIM is executed as quickly as possible. The rate, expressed in bytes
+per second, is applied on a per-vdev basis and may be set differently for
+each leaf vdev.
+.It Fl c, -cancel
+Cancel trimming on the specified devices, or all eligible devices if none
+are specified.
+If one or more target devices are invalid or are not currently being
+trimmed, the command will fail and no cancellation will occur on any device.
+.It Fl s -suspend
+Suspend trimming on the specified devices, or all eligible devices if none
+are specified.
+If one or more target devices are invalid or are not currently being
+trimmed, the command will fail and no suspension will occur on any device.
+Trimming can then be resumed by running
+.Nm zpool Cm trim
+with no flags on the relevant target devices.
+.It Fl w -wait
+Wait until the devices are done being trimmed before returning.
+.El
+.El
+.Sh SEE ALSO
+.Xr zpool-initialize 8 ,
+.Xr zpool-wait 8 ,
+.Xr zpoolprops 8