[linux-lvm] Snapshots and disk re-use

[Phillip Susi]

On 2/23/2011 12:54 PM, Stuart D. Gathman wrote:
> Or maybe you want to *revert* the origin back to the state saved
> in a snapshot.  A specific revert command is in the works, but
> to do it manually, unmount the origin, and copy the snapshot over

That is lvconvert --merge, and it has been around for a while now.  It
is quite handy for testing a dist-upgrade and then rolling back.