kernel panic when using lvm

[chantal at antenna.nl]

Hoi list,

I have two servers with Ubuntu 8.04 and the xen kernel, I use lvm  
volumes for the xen guests. On different occasions the servers  
crashed, all the crashes happened during lvm actions (for example when  
I made an lvm snapshot or when I tried to build an ext3 filesystem on  
a new logical volume).

uname -a:

Linux servername 2.6.24-16-xen #2 SMP Sun Apr 20 05:49:43 JST 2008  
i686 GNU/Linux

There is nothing in /var/log/messages

is this a bug? I have the same setup on a debian server and I never  
had a problem there.

Thanks!

regards Chantal