Best way to "revert" to LVM snapshot?
- From: "Tim Hull" <thully@xxxxxxxxx>
- Date: Wed, 8 Aug 2007 21:58:47 -0400
Hi all,
I'm using LVM for all the partitions on my main hard drive (boot partition
excepted) for the ability to take "snapshots" of the partitions at a
particular point in time.
Anyway, while I have figured out perfectly how to take snapshots, mount
them, and read/write to/from them, I have yet to find a good way to *revert*
volumes (in particular, my root volume) to the state they were as of the
snapshots. Currently, what I am doing to "revert" my root volume is:
1. Reboot from a separate volume with the Debian base system installed
2. lvcreate a new volume with the same size as my root volume
3. cp /dev/debian/snapshot /dev/debian/new_volume
4. lvrename /dev/debian/root /dev/debian/something_else
5. lvrename /dev/debian/new_volume /dev/debian/root
This works fine. However, it is - of course - quite tedious, as it requires
copying some 10GB worth of data. Does anyone know of a better way?
Possibly using rsync? I may want to do this quite often in the future, as I
plan on testing all sorts of somewhat-hairy things on this system and want
to be able to easily revert to a snapshot.
Tim
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