Copy domU over network

# copy LVM image over network (run on source machine)

lvcreate --name xp-disk --size 16G vg1
dd if=/dev/vg01/xp-disk bs=16M | ssh root@TARGET_XEN_HOST 'dd of=/dev/vg1/xp-disk'

# copy XEN config file
scp /etc/xen/xp root@TARGET_XEN_HOST:/etc/xen/xp

Links
http://barkingiguana.com/2011/03/13/moving-lvm-volumes-between-hosts-without-an-intermediate-file/ - Moving LVM volumes between hosts