> On Wed, Feb 20, 2013 at 04:04:49PM +0000, Dietmar Maurer wrote: > > > The backup writer abstraction is a special case interface somewhere > > > between an image format and live migration. I'd prefer it if the > > > backup block job stuck to BlockDriverState as the destination for backup > data. > > > Then you could save a point-in-time copy of a disk to a raw or even > > > qcow2 image. > > > > backup needs to work on non-seekable pipes. > > In _your_ use case. That means that we should support using non-seekable > pipes, but it doesn't mean that any other use case is irrelevant. In fact I > think > backing up to a normal raw or qcow2 image file is the interesting case for the > majority of people.
VMs can have more than one disk. How do you backup them into a single raw or qcow2 image? And where do you store the configuration inside a qcow2 file?
