Adding libvirt KVM instances on LVM

Hello,

I'm installing a newlly acquired Cloudmin Pro on a CentOS 5.5 KVM host. 2 VM's were already created, and ran over LVM.

The plan is to use Cloudmin to migrate and manage virtual domains on those VM's

When I add the KVM host, I ask cloudmin to search existing KVM VM's and add them. But as an answer, I get thi message (also when I try to manually add KVM instances) :

"Failed to add system : Primary disk image /dev/VolGroup00/LogVol00 for KVM instance is in the format , but only the raw format is supported by Cloudmin".

From that, I guess Cloudmin maps raw images files on LVM volumes, and cannot deal with filesystems on LVM.

Am I right ? Is it a Cloudmin limitation ? Is there a way to bypass this problem ?

Thanks for your quick answer