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870fc32fc9
Most subcommands got their own manpages (e.g. create). Some related commands grouped into a single manpage and symlinks created (e.g. set, get, and inherit). I did this when topics were either too short to warrant their own file or so interrelated that a user would want to refer between commands in the same file. Corrected .Sx internal references to .Xr cross refs; lots of .Sx references from when text was all in zfs.8 needed to be changed to .Xr zfs-$SUBCOMMAND 8 cross references. Divided subcommand list in zfs(8) into sections of related functionality. This required writing new descriptions for some commands. Preserved ".Os Linux", `.Os` macro parsing behavior differs between mandoc from the "BSD" mandoc package (available on Ubuntu) and man from Ubuntu's man-db package, which calls groff to format the manpages. Groff handles the `.Os` macro differently and wrongly, defaulting it to "BSD" in `/usr/share/groff/*/tmac/mdoc/doc-common`, instead of getting the default from `uname`. A future set of changes will introduce build-time preprocessing of manpages for platform-specific documentation and can insert the correct operating system name. Added SEE ALSO sections, the newly-divided zfs-*.8 subcommand man pages needed their own SEE ALSO sections pointing to related subcommands and, in some cases, documentation from other packages (e.g. zfs-share.8). Reviewed-by: Matt Ahrens <matt@delphix.com> Reviewed-by: Kjeld Schouten <kjeld@schouten-lebbing.nl> Reviewed-by: Sean Eric Fagan <sef@ixsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ross Williams <ross@ross-williams.net> Closes #9559
179 lines
5.2 KiB
Groff
179 lines
5.2 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 http://www.opensolaris.org/os/licensing.
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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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.\"
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.\" Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved.
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.\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org>
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.\" Copyright (c) 2011, 2019 by Delphix. All rights reserved.
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.\" Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
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.\" Copyright (c) 2014, Joyent, Inc. All rights reserved.
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.\" Copyright (c) 2014 by Adam Stevko. All rights reserved.
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.\" Copyright (c) 2014 Integros [integros.com]
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.\" Copyright 2019 Richard Laager. All rights reserved.
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.\" Copyright 2018 Nexenta Systems, Inc.
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.\" Copyright 2019 Joyent, Inc.
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.\"
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.Dd June 30, 2019
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.Dt ZFS-DESTROY 8
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.Os Linux
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.Sh NAME
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.Nm zfs Ns Pf - Cm destroy
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.Nd Destroys the given dataset(s), snapshot(s), or bookmark.
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.Sh SYNOPSIS
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.Nm
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.Cm destroy
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.Op Fl Rfnprv
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.Ar filesystem Ns | Ns Ar volume
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.Nm
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.Cm destroy
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.Op Fl Rdnprv
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.Ar filesystem Ns | Ns Ar volume Ns @ Ns Ar snap Ns
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.Oo % Ns Ar snap Ns Oo , Ns Ar snap Ns Oo % Ns Ar snap Oc Oc Oc Ns ...
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.Nm
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.Cm destroy
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.Ar filesystem Ns | Ns Ar volume Ns # Ns Ar bookmark
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.Sh DESCRIPTION
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.Bl -tag -width ""
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.It Xo
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.Nm
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.Cm destroy
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.Op Fl Rfnprv
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.Ar filesystem Ns | Ns Ar volume
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.Xc
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Destroys the given dataset.
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By default, the command unshares any file systems that are currently shared,
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unmounts any file systems that are currently mounted, and refuses to destroy a
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dataset that has active dependents
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.Pq children or clones .
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.Bl -tag -width "-R"
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.It Fl R
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Recursively destroy all dependents, including cloned file systems outside the
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target hierarchy.
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.It Fl f
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Force an unmount of any file systems using the
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.Nm unmount Fl f
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command.
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This option has no effect on non-file systems or unmounted file systems.
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.It Fl n
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Do a dry-run
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.Pq Qq No-op
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deletion.
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No data will be deleted.
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This is useful in conjunction with the
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.Fl v
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or
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.Fl p
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flags to determine what data would be deleted.
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.It Fl p
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Print machine-parsable verbose information about the deleted data.
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.It Fl r
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Recursively destroy all children.
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.It Fl v
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Print verbose information about the deleted data.
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.El
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.Pp
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Extreme care should be taken when applying either the
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.Fl r
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or the
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.Fl R
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options, as they can destroy large portions of a pool and cause unexpected
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behavior for mounted file systems in use.
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.It Xo
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.Nm
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.Cm destroy
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.Op Fl Rdnprv
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.Ar filesystem Ns | Ns Ar volume Ns @ Ns Ar snap Ns
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.Oo % Ns Ar snap Ns Oo , Ns Ar snap Ns Oo % Ns Ar snap Oc Oc Oc Ns ...
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.Xc
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The given snapshots are destroyed immediately if and only if the
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.Ql zfs destroy
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command without the
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.Fl d
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option would have destroyed it.
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Such immediate destruction would occur, for example, if the snapshot had no
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clones and the user-initiated reference count were zero.
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.Pp
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If a snapshot does not qualify for immediate destruction, it is marked for
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deferred deletion.
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In this state, it exists as a usable, visible snapshot until both of the
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preconditions listed above are met, at which point it is destroyed.
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.Pp
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An inclusive range of snapshots may be specified by separating the first and
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last snapshots with a percent sign.
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The first and/or last snapshots may be left blank, in which case the
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filesystem's oldest or newest snapshot will be implied.
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.Pp
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Multiple snapshots
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.Pq or ranges of snapshots
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of the same filesystem or volume may be specified in a comma-separated list of
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snapshots.
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Only the snapshot's short name
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.Po the part after the
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.Sy @
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.Pc
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should be specified when using a range or comma-separated list to identify
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multiple snapshots.
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.Bl -tag -width "-R"
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.It Fl R
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Recursively destroy all clones of these snapshots, including the clones,
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snapshots, and children.
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If this flag is specified, the
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.Fl d
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flag will have no effect.
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.It Fl d
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Destroy immediately. If a snapshot cannot be destroyed now, mark it for
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deferred destruction.
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.It Fl n
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Do a dry-run
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.Pq Qq No-op
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deletion.
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No data will be deleted.
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This is useful in conjunction with the
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.Fl p
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or
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.Fl v
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flags to determine what data would be deleted.
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.It Fl p
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Print machine-parsable verbose information about the deleted data.
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.It Fl r
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Destroy
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.Pq or mark for deferred deletion
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all snapshots with this name in descendent file systems.
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.It Fl v
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Print verbose information about the deleted data.
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.Pp
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Extreme care should be taken when applying either the
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.Fl r
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or the
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.Fl R
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options, as they can destroy large portions of a pool and cause unexpected
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behavior for mounted file systems in use.
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.El
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.It Xo
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.Nm
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.Cm destroy
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.Ar filesystem Ns | Ns Ar volume Ns # Ns Ar bookmark
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.Xc
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The given bookmark is destroyed.
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.El
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.Sh SEE ALSO
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.Xr zfs-create 8 ,
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.Xr zfs-hold 8
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