[libvirt-users] Mapping partitions rather than disks into a Libvirt managed KVM guest

I'm trying to migrate some XEN based environments over to KVM and I'm having a couple of issues with how I'm currently managing the storage On my Xen Server I have a bunch of LVM based partitions that are mapped into the guests as partitions rather than disks For example /dev/VIrtVG/server-home maps to /dev/sda2 which is mounted as /home in the guest. Is there a simple way to reproduce this using KVM and libvirt rather than needing enough spare space to turn each of these partitions into virtual disks. One method I've tried is using mdadm with linear to create a partition table stub but i'm a little worries about data integrity. dd if=/dev/zero of=/root/dummy.mbr count=256 losetup -f /root/dummy.mbr mdadm --build --verbose /dev/md0 --chunk=128 --level=linear --raid-devices=2 /dev/loop0 /dev/VIrtVG/server-home Then try to setup a partition table with fdisk. Any other recommendations? Thanks Steve