Re: [Qemu-devel] [PATCH v4 0/8] block: drive-backup live backup command

[Richard W.M. Jones]

On Sun, May 19, 2013 at 09:30:46PM +0200, Paolo Bonzini wrote:
> Il 19/05/2013 18:47, Richard W.M. Jones ha scritto:
> >> > 
> >> > More advanced users may wish to make the target an NBD URL.  The NBD 
> >> > server
> >> > listening on the other side can process the backup writes any way it 
> >> > wishes.  I
> >> > previously posted an RFC series with a backup server that streamed 
> >> > Dietmar's
> >> > VMA backup archive format.
> > I'm guessing the answer is no, but thought I would ask:  Is there
> > any way to use this to do point-in-time inspection of guests?
> 
> Almost, and even for an atomic copy of multiple disks.  All that is left
> is to create the copy with the disk as a backing file, and switch the
> backing file at the end of the copy.  It is a very simple change on top
> of these patches.

Cool news.  I look forward to this :-)

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-top is 'top' for virtual machines.  Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top