Processed: severity of 467090 is important

[Alasdair G Kergon]

On Sun, Mar 22, 2009 at 08:03:04AM +0000, Debian Bug Tracking System wrote:
> Processing commands for control at bugs.debian.org:
> 
> > severity 467090 important
> Bug#467090: lvm-common: Snapshotting LVM1 volumes with LVM2 tools corrupts volume group
> Severity set to `important' from `critical'
 
The old upstream 2.4 kernel driver uses one on-disk snapshot format; the
new device-mapper driver in 2.6 (or patched into 2.4) uses a different
and incompatible format.

Any upgrade process needs to be aware of this and warn you about it:
it's what you're using in your running kernel that matters: a snapshot
created with device-mapper cannot be used by the old LVM driver and
vice-versa.  (The code does not prevent you from mixing-and-matching
LVM1 and LVM2 as there may a valid reason someone wants to do it.)

Alasdair
-- 
agk at redhat.com