Re: [Qemu-devel] Live Block Migration using Mirroring

[Federico Simoncelli]

----- Original Message -----
> From: "Stefan Hajnoczi" <address@hidden>
> To: "Federico Simoncelli" <address@hidden>
> Cc: address@hidden, address@hidden, address@hidden
> Sent: Thursday, February 23, 2012 5:35:23 PM
> Subject: Re: [Qemu-devel] Live Block Migration using Mirroring
>
> On Wed, Feb 22, 2012 at 5:13 PM, Federico Simoncelli
> <address@hidden> wrote:
> >  recently I've been working on live block migration combining the
> >  live
> > snapshots and the blkmirror patch sent by Marcelo Tosatti few
> > months ago.
> >
> > The design is summarized at this url as "Mirrored-Snapshot":
> >
> > http://www.ovirt.org/wiki/Features/Design/StorageLiveMigration
>
> After mirrored-snapshot completes we're left with the base and the
> snapshot.  Is the idea to implement live snapshot merge next?  Or do
> you have something else planned to avoid growing the backing file
> chain each time mirrored-snapshot is used?

The general idea is that I don't expect the need to migrate to a new
storage to be very frequent. Being able to live merge the new snapshot
would be great.

--
Federico