[linux-lvm] Backuping "special" snapshots
Marc Patino Gómez
mpatino at es.clara.net
Wed Oct 3 08:47:43 UTC 2007
Hi list,
I am searching a way to backup a "special" logical volume. This special
lv doesn't contains a filesystem, it contains a hole image disk of a
running server (MBR,Partition Table, Partitions and filesystems), in
fact it is a VBD (Virtual Block Device) of a HVM Xen Guest.
I want to be able to make the backup without shutting down the Virtual
Machine, but the traditional way :
- make a snapshot
- mount snapshot
- backup the snapshots
- umount snapshot
- remove snapshot
is not suitable for this kind of logical volumes.
I search some information about it, but the only clue is:
fdisk -l -u /dev/vg00/lv00
after looking the partition table, mount a partition with mount with the
corresponding offset parameter...
Exists a way to do this using a snapshot? Any other advice to backup
this kind of logical volume?
Many thanks in advance,
Cheers,
Marc
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