Re: [Xen-devel] Q: How to find own domid or uuid from domU?

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 18 May 2006, at 10:46, Markus Armbruster wrote:

> I can map from domid to uuid by reading /local/domain/DOMID/vm.
>
> I got that to work by trying DOMIDs starting with 0 until the read
> succeeds, but that's kind of gross.
>
> I can think of some less gross methods to find my domid, but I'd still
> be glad to hear suggestions.
Don't use DOMID. It can change across save/restore and migration.

> Would you like to have an interface for obtaining one's UUID?  What
> about adding a XENVER_get_uuid code to HYPERVISOR_xen_version()?
That might be okay, although even that might appear to change if we 
implement things like VM fork in future.
Why does your guest need to know its ID?

 -- Keir


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