Masowe snapshoty ZFS
ZFS is very friendly filesystem. You can do a snapshot quick and easy.
For example, if you have ZFS named
tank, you can do snapshot named
# zfs snapshot tank@snap1
Done. But what if you have several pools and several ZFS filesystems on each? You can do a simple loop:
# for a in `zpool list -H -o name`; do zfs snapshot -r $a@20110109; done
This command will create recursive snapshots for all zpools in system. Naturally string 20110109 is exemplary and represents actual date.