RE: [Xen-devel] Migration questions

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> Second, when a VM is migrated, is there a way to keep a 
> permanent ID assigned to the VM?  For example, if I create my 
> VM and assign it an ID of 500, when I migrate the VM to a new 
> machine, will the VM still have an ID of 500?  My 
> understanding is that XEN will assign a new ID to the VM.

The name will stay constant. The domain id is only a temporary thing and
will not be preserved across migration (it can even change across VM
reboots on the same machine). Think of it like a PID.

If you're configuring devices etc for a domain you should key it off the
name, not the domain id.

Ian



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