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
111 lines
3.0 KiB
Groff
111 lines
3.0 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-HOLD 8
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.Os Linux
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.Sh NAME
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.Nm zfs Ns Pf - Cm hold
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.Nd Hold a snapshot to prevent it being removed with the zfs destroy command.
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.Sh SYNOPSIS
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.Nm
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.Cm hold
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.Op Fl r
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.Ar tag Ar snapshot Ns ...
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.Nm
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.Cm holds
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.Op Fl rH
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.Ar snapshot Ns ...
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.Nm
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.Cm release
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.Op Fl r
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.Ar tag Ar snapshot Ns ...
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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 hold
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.Op Fl r
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.Ar tag Ar snapshot Ns ...
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.Xc
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Adds a single reference, named with the
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.Ar tag
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argument, to the specified snapshot or snapshots.
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Each snapshot has its own tag namespace, and tags must be unique within that
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space.
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.Pp
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If a hold exists on a snapshot, attempts to destroy that snapshot by using the
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.Nm zfs Cm destroy
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command return
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.Er EBUSY .
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.Bl -tag -width "-r"
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.It Fl r
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Specifies that a hold with the given tag is applied recursively to the snapshots
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of all descendent file systems.
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.El
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.It Xo
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.Nm
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.Cm holds
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.Op Fl rH
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.Ar snapshot Ns ...
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.Xc
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Lists all existing user references for the given snapshot or snapshots.
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.Bl -tag -width "-r"
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.It Fl r
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Lists the holds that are set on the named descendent snapshots, in addition to
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listing the holds on the named snapshot.
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.It Fl H
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Do not print headers, use tab-delimited output.
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.El
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.It Xo
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.Nm
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.Cm release
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.Op Fl r
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.Ar tag Ar snapshot Ns ...
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.Xc
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Removes a single reference, named with the
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.Ar tag
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argument, from the specified snapshot or snapshots.
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The tag must already exist for each snapshot.
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If a hold exists on a snapshot, attempts to destroy that snapshot by using the
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.Nm zfs Cm destroy
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command return
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.Er EBUSY .
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.Bl -tag -width "-r"
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.It Fl r
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Recursively releases a hold with the given tag on the snapshots of all
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descendent file systems.
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.El
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.El
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.Sh SEE ALSO
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.Xr zfs-destroy 8
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