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.
zfs |
jail
jailid|jailname
filesystem |
zfs |
unjail
jailid|jailname
filesystem |
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.
jail(8),
zfsprops(8)