FreeNas: Copy-on-write raw image backups with ZFS

How to achieve сopy-on-write raw image backups with ZFS using UrBackup-server within FreeNas Jail? I can not create a sub-dataset within the jail. The command “zfs list” within the jail shows “pool” and “pool/images” as available datasets. But the command “zfs create pool/images/test” will result in “permission denied”.

Someone here in the forums managed to give the jail permssions to create/destroy ZFS snapshots.

I just put the urbackup server in the normal FreeBSD in which FreeNAS also runs (without jail). This has the advantage that the image mounting also works.

Both options require a bit of FreeBSD command line knowledge.

Thanks, Uroni! If I can not give permission to the jail, I put the UrBackup server in the normal FreeBSD in which FreeNAS also runs as you. But I’m worried would not it be a problem if I later want to update FreeNas?