zfs is one of the strong points of FreeBSD.
Nowadays it is available also on Linux, although we tested it quite thoroughly numerous times, only to find subtle bugs.
Here is a curated lists of tools that makes using
zfs features easier.
sudo pkg install -y beadm
beadm takes snapshots of the boot disk to manage Boot Environments on ZFS filesystems.
I use it every time I do a majot pkg upgrade.
sudo pkg install -y zfsnap2
This will take a snaphot of zpool/dataset flagged to last 1h
zfsnap snapshot -s -S -a 1h zpool/dataset
This will destroy all snapshots that are expired from those two pools
sudo /usr/local/sbin/zfsnap destroy zroot/usr/home backup/backup/home
sudo pkg install -y zxfer
This will copy all snapshots to backup (via zfs send/receive). It could be any remote zpool too.
zxfer -dFkPv -R zroot/usr/home backup
sudo pkg install -y zfs-snap-diff
It allows to browse snapshots of a given zpool, showing diffs.
This tools shows how
zfs is way better that Apple TimeMachine.
sudo zfs-snap-diff zpool
will launch a web server. Navigating to
127.0.0.1:12345 will show its interface and allow to see all the snapshots and navigate the diffs.