bb2d13b686
Notable upstream pull request merges: #13782 Fix setting the large_block feature after receiving a snapshot #14157 FreeBSD: stop using buffer cache-only routines on sync #14172 zed: post a udev change event from spa_vdev_attach() #14181 zed: unclean disk attachment faults the vdev #14190 Bump checksum error counter before reporting to ZED #14196 Remove atomics from zh_refcount #14197 Don't leak packed recieved proprties #14198 Switch dnode stats to wmsums #14199 Remove few pointer dereferences in dbuf_read() #14200 Micro-optimize zrl_remove() #14204 Lua: Fix bad bitshift in lua_strx2number() #14212 Zstd fixes #14218 Avoid a null pointer dereference in zfs_mount() on FreeBSD #14235 nopwrites on dmu_sync-ed blocks can result in a panic #14236 zio can deadlock during device removal #14247 Micro-optimize fletcher4 calculations #14261 FreeBSD: zfs_register_callbacks() must implement error check correctly Obtained from: OpenZFS OpenZFS commit: 59493b63c18ea223857066218d6a58b67eb88159
125 lines
3.6 KiB
Groff
125 lines
3.6 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 https://opensource.org/licenses/CDDL-1.0.
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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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.\" 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) 2011, Pawel Jakub Dawidek <pjd@FreeBSD.org>
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.\" Copyright (c) 2012, Glen Barber <gjb@FreeBSD.org>
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.\" Copyright (c) 2012, Bryan Drewery <bdrewery@FreeBSD.org>
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.\" Copyright (c) 2013, Steven Hartland <smh@FreeBSD.org>
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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 (c) 2014, Xin LI <delphij@FreeBSD.org>
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.\" Copyright (c) 2014-2015, The FreeBSD Foundation, All Rights Reserved.
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.\" Copyright (c) 2016 Nexenta Systems, Inc. All Rights Reserved.
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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 May 27, 2021
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.Dt ZFS-JAIL 8
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.Os
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.
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.Sh NAME
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.Nm zfs-jail
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.Nd attach or detach ZFS filesystem from FreeBSD jail
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.Sh SYNOPSIS
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.Nm zfs Cm jail
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.Ar jailid Ns | Ns Ar jailname
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.Ar filesystem
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.Nm zfs Cm unjail
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.Ar jailid Ns | Ns Ar jailname
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.Ar filesystem
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.
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.Sh DESCRIPTION
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.Bl -tag -width ""
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.It Xo
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.Nm zfs
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.Cm jail
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.Ar jailid Ns | Ns Ar jailname
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.Ar filesystem
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.Xc
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Attach the specified
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.Ar filesystem
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to the jail identified by JID
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.Ar jailid
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or name
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.Ar jailname .
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From now on this file system tree can be managed from within a jail if the
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.Sy jailed
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property has been set.
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To use this functionality, the jail needs the
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.Sy allow.mount
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and
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.Sy allow.mount.zfs
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parameters set to
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.Sy 1
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and the
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.Sy enforce_statfs
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parameter set to a value lower than
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.Sy 2 .
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.Pp
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You cannot attach a jailed dataset's children to another jail.
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You can also not attach the root file system
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of the jail or any dataset which needs to be mounted before the zfs rc script
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is run inside the jail, as it would be attached unmounted until it is
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mounted from the rc script inside the jail.
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.Pp
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To allow management of the dataset from within a jail, the
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.Sy jailed
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property has to be set and the jail needs access to the
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.Pa /dev/zfs
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device.
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The
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.Sy quota
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property cannot be changed from within a jail.
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.Pp
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After a dataset is attached to a jail and the
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.Sy jailed
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property is set, a jailed file system cannot be mounted outside the jail,
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since the jail administrator might have set the mount point to an unacceptable
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value.
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.Pp
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See
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.Xr jail 8
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for more information on managing jails.
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Jails are a
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.Fx
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feature and are not relevant on other platforms.
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.It Xo
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.Nm zfs
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.Cm unjail
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.Ar jailid Ns | Ns Ar jailname
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.Ar filesystem
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.Xc
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Detaches the specified
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.Ar filesystem
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from the jail identified by JID
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.Ar jailid
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or name
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.Ar jailname .
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.El
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.Sh SEE ALSO
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.Xr zfsprops 7 ,
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.Xr jail 8
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