On 12/12/2012 06:46 AM, Paolo Bonzini wrote:
> A persistent dirty bitmap lets mirroring proceed with no waste of work
> after QEMU exits (either offline, or online when the VM restarts).
> It is also useful in order to communicate to management whether the
> switch to the destination was completed or not.
> 
> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
> ---
>  block/mirror.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)

Sure tiny for what it adds :)

Reviewed-by: Eric Blake <ebl...@redhat.com>

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

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