#create a snapshot of the LV drive
/usr/sbin/lvcreate -L5G -s -n vm_test_snap /dev/VolGroup00/vm_test

#turn the snapshop into a file image
dd if=/dev/VolGroup00/vm_test_snap | gzip -9 >/backup/vm_test.dd.gz

#remove the snapshot
/usr/sbin/lvremove /dev/VolGroup00/vm_test_snap

#move the file image

#copy and modify the Xen config file
cp /etc/xen/test /etc/zen/test2
vi /etc/zen/test2 

#change the name of the LV drive to vm_test2

#uncompress the file image into a LV drive
/usr/sbin/lvcreate -n vm_test2 --size 5G VolGroup00
gzip -dc /backup/vm_test.dd.gz | dd of=/dev/VolGroup00/vm_test2

#start the new VM
/usr/sbin/xm create -c test2

Источник: http://quadruple.ca/how-move-virtual-machine-one-computer-another