Re: [Xen-devel] How to get the persistent identifier of a domain?

["M.A. Williamson" <maw48@xxxxxxxxx>]

> > Here is my experimental setting. I start a domu, run "xm list --long", 
> > the uuid shown to me was (uuid 6cc8ab86-4ad4-7820-3326-53d666ff96aa). 
> > Then, I shut down this domu, and start the same domu again. I got a 
> > different uuid: (uuid 0c9ee2d6-4a9f-c0bf-989f-148bec284e15). You can see 
> > these two uuids are different.
> > I am using the latest xen-unstable.
> Do you mean that you've done xm create <file>, xm shutdown <domain>, and
> then xm create <file> again?  You are right, this will in effect create
> two separate VMs, with the same configuration, but different identities
> (and different UUIDs).
IIRC if you're using config files instead of the persistent VM support you 
can also ensure a stable UUID by specifying it in the VM config file?
Cheers,
Mark

> If you use the new support for persistent VMs, then you should find
> that the VM retains its identity.  xm new <file>, xm start <domain>,
> xm shutdown <domain>, xm start <domain> should have the same effect as
> the commands above, but you will see that the VM retains its UUID.
>
> HTH,
>
> Ewan.
>
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