On the new box:
- Boot it up
- Shut down all three domUs with “xm shutdown”
- Mount all three domU disks in /mnt/xen[1-3]
On the old box:
- Set up an authorized key so that root on the new box can ssh into root on the old box
- Make a snapshot of one of the disks with
lvcreate -L 100G -s -n xen1-snapshot /dev/xen-space/xen1-disk - Mount it with
mount /dev/xen-space/xen1-snapshot /mnt/xen1
On the new box:
- Copy the changed files using
rsync -aSuvrx --numeric-ids --delete -e ssh --exclude /lib/modules root@xen.xcski.com:/mnt/xen1/ /mnt/xen1
On the old box:
- Unmount the snapshot
- Remove the snapshot with
lvremove /dev/xen-space/xen1-snapshot