On 09/11/2015 11:28 AM, Eric Blake wrote:

> But design-wise, would it make sense to support:
> 
> "backing":null

Just read Max's response; it sounds like we already have "backing":""
(and don't need "backing":null) for what we want. So maybe we don't need
this patch after all.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org