NAME
zfs-jail
—
Attaches and detaches ZFS filesystems
from FreeBSD jails. A ZFS dataset can be attached to
a jail by using the "zfs-jail
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
jailed property has to be set and the jail needs access to
the /dev/zfs device. The
quota
property cannot be changed from within a jail. See
jail(8) for information on how to allow mounting ZFS datasets from
within a jail.
A ZFS dataset can be detached from a jail
using the "zfs-jail
unjail
" subcommand.
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.
SYNOPSIS
zfs |
jail
jailid|jailname
filesystem |
zfs |
unjail
jailid|jailname
filesystem |
DESCRIPTION
zfs
jail
jailid filesystem-
Attaches the specified filesystem to the jail identified by JID jailid. From now on this file system tree can be managed from within a jail if the jailed property has been set. To use this functuinality, the jail needs the allow.mount and allow.mount.zfs parameters set to 1 and the enforce_statfs parameter set to a value lower than 2.
See jail(8) for more information on managing jails and configuring the parameters above.
zfs
unjail
jailid filesystem-
Detaches the specified filesystem from the jail identified by JID jailid.