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Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12129
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2021-05-27 02:46:40 +02:00
committed by Brian Behlendorf
parent 13c9a41140
commit c650ceb64d
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man/man8/zfs-jail.8
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@@ -18,7 +18,6 @@
.\"
.\" CDDL HEADER END
.\"
.\"
.\" Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved.
.\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org>
.\" Copyright (c) 2011, 2019 by Delphix. All rights reserved.
@@ -37,82 +36,87 @@
.\" Copyright 2018 Nexenta Systems, Inc.
.\" Copyright 2019 Joyent, Inc.
.\"
.Dd December 9, 2019
.Dd May 27, 2021
.Dt ZFS-JAIL 8
.Os FreeBSD
.Os
.
.Sh NAME
.Nm zfs-jail
.Nd Attaches and detaches ZFS filesystems from FreeBSD jails.
.No A Tn ZFS
dataset can be attached to a jail by using the
.Qq Nm zfs jail
subcommand. You cannot attach a dataset to one jail and the children of the
same dataset to another jail. You can also not attach the root file system
of the jail or any dataset which needs to be mounted before the zfs rc script
is run inside the jail, as it would be attached unmounted until it is
mounted from the rc script inside the jail. To allow management of the
dataset from within a jail, the
.Sy jailed
property has to be set and the jail needs access to the
.Pa /dev/zfs
device. The
.Sy quota
property cannot be changed from within a jail. See
.Xr jail 8
for information on how to allow mounting
.Tn ZFS
datasets from within a jail.
.Pp
.No A Tn ZFS
dataset can be detached from a jail using the
.Qq Nm zfs unjail
subcommand.
.Pp
After a dataset is attached to a jail and the jailed property is set, a jailed
file system cannot be mounted outside the jail, since the jail administrator
might have set the mount point to an unacceptable value.
.Nd attach or detach ZFS filesystem from FreeBSD jail
.Sh SYNOPSIS
.Nm zfs
.Cm jail
.Ar jailid Ns | Ns Ar jailname filesystem
.Nm zfs
.Cm unjail
.Ar jailid Ns | Ns Ar jailname filesystem
.Nm zfs Cm jail
.Ar jailid Ns | Ns Ar jailname
.Ar filesystem
.Nm zfs Cm unjail
.Ar jailid Ns | Ns Ar jailname
.Ar filesystem
.
.Sh DESCRIPTION
.Bl -tag -width ""
.It Xo
.Nm zfs
.Cm jail
.Ar jailid filesystem
.Ar jailid Ns | Ns Ar jailname
.Ar filesystem
.Xc
.Pp
Attaches the specified
Attach the specified
.Ar filesystem
to the jail identified by JID
.Ar jailid .
.Ar jailid
or name
.Ar jailname .
From now on this file system tree can be managed from within a jail if the
.Sy jailed
property has been set. To use this functuinality, the jail needs the
.Va allow.mount
property has been set.
To use this functionality, the jail needs the
.Sy allow.mount
and
.Va allow.mount.zfs
parameters set to 1 and the
.Va enforce_statfs
parameter set to a value lower than 2.
.Sy allow.mount.zfs
parameters set to
.Sy 1
and the
.Sy enforce_statfs
parameter set to a value lower than
.Sy 2 .
.Pp
You cannot attach a jailed dataset's children to another jail.
You can also not attach the root file system
of the jail or any dataset which needs to be mounted before the zfs rc script
is run inside the jail, as it would be attached unmounted until it is
mounted from the rc script inside the jail.
.Pp
To allow management of the dataset from within a jail, the
.Sy jailed
property has to be set and the jail needs access to the
.Pa /dev/zfs
device.
The
.Sy quota
property cannot be changed from within a jail.
.Pp
After a dataset is attached to a jail and the
.Sy jailed
property is set, a jailed file system cannot be mounted outside the jail,
since the jail administrator might have set the mount point to an unacceptable value.
.Pp
See
.Xr jail 8
for more information on managing jails and configuring the parameters above.
for more information on managing jails.
Jails are a
.Fx
feature and are not relevant on other platforms.
.It Xo
.Nm zfs
.Cm unjail
.Ar jailid filesystem
.Ar jailid Ns | Ns Ar jailname
.Ar filesystem
.Xc
.Pp
Detaches the specified
.Ar filesystem
from the jail identified by JID
.Ar jailid .
.Ar jailid
or name
.Ar jailname .
.El
.Sh SEE ALSO
.Xr jail 8 ,