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Jail cloning

jclone command

% cbsd jclone

% cbsd jrclone


Creates a clone of a given jail. The command requires the name of the original jail (passed with old) as well as a name for the clone, specified with new and a FQDN (hostname) with host_hostname. Optionally a new IP Address can be given with the ip4_addr parameter (multiple IPs need to be separated by commas).


Since 11.0.10 version, CBSD on ZFS-based hosters will be use ZFS clone features!

ZFS clone features is ultra fast operation (thanks to Copy-on-write), but imposes some restrictions - you will be dependent on the parent snapshot. If you try to remove parent environment, CBSD automatically executes the zfs promote command, but when you works with snapshot independently - just keep it in your mind

You can control this behaviour via clone_method= argument or, to set it globally, use rclone.conf and bclone.conf to overwrite settings from 'auto' to 'rsync':

% echo 'clone_method="rsync"' > ~cbsd/etc/rclone.conf
% echo 'clone_method="rsync"' > ~cbsd/etc/bclone.conf

~cbsd/etc/bclone.conf (for bclone) and ~cbsd/etc/rclone.conf contain clone_method="rsync", clone will not use zfs clone even on ZFS filesystem and you will get full copy via rsync.

Example: cloning jail jail2 to jail3 with changes ip address ip4_addr and name of hosts host_hostname:

% cbsd jclone old=jail2 new=jail3 ip4_addr=