2019-12-11 22:58:37 +03:00
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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 2019 Joyent, Inc.
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.\"
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.Dd December 9, 2019
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.Dt ZFS-JAIL 8
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.Os FreeBSD
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.Sh NAME
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2020-10-22 21:28:10 +03:00
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.Nm zfs-jail
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2019-12-11 22:58:37 +03:00
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.Nd Attaches and detaches ZFS filesystems from FreeBSD jails.
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.No A Tn ZFS
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dataset can be attached to a jail by using the
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2021-03-10 17:56:01 +03:00
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.Qq Nm zfs jail
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2019-12-11 22:58:37 +03:00
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subcommand. You cannot attach a dataset to one jail and the children of the
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same dataset to another jail. 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. To allow management of the
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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. The
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.Sy quota
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property cannot be changed from within a jail. See
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.Xr jail 8
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for information on how to allow mounting
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.Tn ZFS
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datasets from within a jail.
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.Pp
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.No A Tn ZFS
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dataset can be detached from a jail using the
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2021-03-10 17:56:01 +03:00
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.Qq Nm zfs unjail
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2019-12-11 22:58:37 +03:00
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subcommand.
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.Pp
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After a dataset is attached to a jail and the jailed property is set, a jailed
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file system cannot be mounted outside the jail, since the jail administrator
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might have set the mount point to an unacceptable value.
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.Sh SYNOPSIS
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2020-10-22 21:28:10 +03:00
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.Nm zfs
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2019-12-11 22:58:37 +03:00
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.Cm jail
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.Ar jailid Ns | Ns Ar jailname filesystem
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2020-10-22 21:28:10 +03:00
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.Nm zfs
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2019-12-11 22:58:37 +03:00
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.Cm unjail
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.Ar jailid Ns | Ns Ar jailname filesystem
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.Sh DESCRIPTION
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.Bl -tag -width ""
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.It Xo
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2020-10-22 21:28:10 +03:00
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.Nm zfs
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2019-12-11 22:58:37 +03:00
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.Cm jail
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.Ar jailid filesystem
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.Xc
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.Pp
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Attaches 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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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. To use this functuinality, the jail needs the
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.Va allow.mount
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and
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.Va allow.mount.zfs
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parameters set to 1 and the
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.Va enforce_statfs
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parameter set to a value lower than 2.
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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 and configuring the parameters above.
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.It Xo
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2020-10-22 21:28:10 +03:00
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.Nm zfs
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2019-12-11 22:58:37 +03:00
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.Cm unjail
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.Ar jailid filesystem
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.Xc
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.Pp
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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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.El
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.Sh SEE ALSO
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.Xr jail 8 ,
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.Xr zfsprops 8
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