ZFS - Send and recv backup

ZFS explained

So I needed a way to backup all my jails. Lucky for me all my jails are run in a ZFS dataset. ZFS to the rescue.

First. Allow your datasets to be {snapshot,send,hold} by your normal user on the jail server to avoid using root.

sudo zfs allow -u <user> hold,send,snapshot zroot/usr/jails/jail1

Then create the recursive snapshot.

zfs snapshot -r zroot/usr/jails/jail1@backup

Then we also need to prep the receiving side so that your normal user can receive the backups.

zfs create zpool/backup
sudo zfs allow -u <user> create,mount,receive,compression zpool/backup
sudo chown <user> /zpool/backup