Today’s Quick Tip addresses Bare Metal Restore (BMR) for Citrix XenServer. This is a popular virtualized environment used by many of our customers. While the benefits of BMR to a hosting provider are clear, the process for performing a BMR of a paravirtualized machine may not be as obvious.
A challenge that we have seen customers run into with BMR of a Citrix Xen paravirtualized (PV) machine is that the BMR is successful, but the restored machine does not boot properly or does not run in a paravirtualized mode. This is due to the nature of backups of paravirtualized machines (using xvda instead of sda) as shown below.