On Wed, Feb 8, 2012 at 2:55 PM, Paolo Bonzini <pbonz...@redhat.com> wrote: > On 02/08/2012 03:39 PM, Stefan Hajnoczi wrote: >> >> >>> > What about taking the existing Ceph/RBD driver in QEMU and changing it >>> > to >>> > support arbitrary image formats rather than just raw? That sounds >>> > much much >>> > easier. The main advantage is that Ceph has a user-space library for >>> > use in >>> > the replication hub. It also supports snapshots. >> >> I missed how Ceph/RBD helps. Can you explain how we would use it? > > > Ceph supports replication, you would just put images in a Ceph store rather > than in a "normal" filesystem.
I don't think that meets the need to replicate guest I/Os before they've been sliced and diced by an image format. Stefan
