[linux-lvm] restoring filesystem state using snapshot

Cameron Hutchison camh at xdna.net
Fri Jan 9 09:57:02 UTC 2004

Once upon a time Ken Fuchs said...
> >i want to restore the filesystem state using only the snapshot taken by LVM 
> >ie without taking a full backup.
> Will copying the contents of the snapshot over the original logical
> volume do what you want?  If so, this can be done as follows:
> # mount /dev/vg/snapshot /snap
> # mount /dev/vg/original /orig
> # (cd /snap; tar cf - .) | (cd /orig; tar xvf -)

rsync would probably be a better option - it will copy far less and will
remove any files added after the snapshot was taken (if invoked
appropriately). /orig should end up as a replica of /snap.

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