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Re: [Libvir] save/restore support for KVM



On Fri, Aug 10, 2007 at 11:06:02AM +0100, Richard W.M. Jones wrote:
> Daniel P. Berrange wrote:
> >>- I append the domain's UUID at the end of the migration image. 
> >>  This doesn't affect KVM at all (it ignores the extra data).
> >>  Does that seem reasonable?  It's unclear how the saved image
> >>  is supposed to get associated with a particular VM configuration
> >>  without doing something like this.
> >
> >Actually I'd store the entire XML config appended to the end of the image.
> >Its quite possible the saved image may be restored on a different machine
> >so libvirt will need the XML config there & its not much work to 
> >automatically
> >append it all & use it when restoring later.
> 
> How does this (or even _does_ this) work in the Xen case?  Does Xen save 
> this info like UUID, name, etc. in the migration image?

XenD stuffs the entire SEXPR config for the guest in the start of the
saved image file & reads it out when restoring. So my suggestion is
basically the same

Regards,
Dan.
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