as above.

when I mentioned snapshot, I meant all of the pool and not just the individual filesystem created by FreeBSD. So in case I made a mess in various folders, I can just rollback to this snapshot and my FreeBSD instance feels it's newly installed/factory reset.


for reference, here are the various filesystems created during Auto-ZFS installation

root@mydesktop:/home/myuser # zfs list
zroot                887M  51.0G    96K  /zroot
zroot/ROOT           884M  51.0G    96K  none
zroot/ROOT/default   884M  51.0G   884M  /
zroot/tmp            112K  51.0G   112K  /tmp
zroot/usr            432K  51.0G    96K  /usr
zroot/usr/home       144K  51.0G   144K  /usr/home
zroot/usr/ports       96K  51.0G    96K  /usr/ports
zroot/usr/src         96K  51.0G    96K  /usr/src
zroot/var            724K  51.0G    96K  /var
zroot/var/audit       96K  51.0G    96K  /var/audit
zroot/var/crash       96K  51.0G    96K  /var/crash
zroot/var/log        244K  51.0G   244K  /var/log
zroot/var/mail        96K  51.0G    96K  /var/mail
zroot/var/tmp         96K  51.0G    96K  /var/tmp

1 Answer 1


Unless you want to make a block-level backup of each vdev in the pool (e.g. using dd), ZFS only provides you with a dataset-level backup mechanism. However, you can create recursive snapshots and back these up using zfs send using the -R option. This way you can back up all datasets in your zpool.

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