Re: [Qemu-devel] storing machine data in qcow images?

[Eduardo Habkost <ehabkost@redhat.com>]

On Tue, May 29, 2018 at 03:03:16PM +0100, Dr. David Alan Gilbert wrote:
> * Richard W.M. Jones (rjones@redhat.com) wrote:
> > On Fri, May 18, 2018 at 06:09:56PM +0100, Daniel P. Berrangé wrote:
> > > The closest to a cross-hypervisor standard is OVF which can store
> > > metadata about required hardware for a VM. I'm pretty sure it does
> > > not have the concept of machine types, but maybe it has a way for
> > > people to define metadata extensions. Since it is just XML at the
> > > end of the day, even if there was nothing official in OVF, it would
> > > be possible to just define a custom XML namespace and declare a
> > > schema for that to follow.
> > 
> > I have a great deal of experience with the OVF "standard".
> > TL;DR: DO NOT USE IT.
> 
> In addition to the detail below, from reading DMTF's OVF spec (DSP0243 v
> 2.1.1) I see absolutely nothing specifying hardware type.
> Sure it can specify size of storage, number of ether cards, MAC
> addresses for them etc - but I don't see any where specify the type of 
> emualted system.

Maybe the VirtualHardwareSection/System/vssd:VirtualSystemType
element could be used for that.  (DSP0243 v2.1.1, line 650).

But based on Richard's feedback, I think we shouldn't even try to
use it.

-- 
Eduardo