Re: [Qemu-devel] Live migration using qcow2

[Tiziano Müller]

Am Mittwoch, den 20.02.2013, 12:20 +0100 schrieb Kevin Wolf:
> On Wed, Feb 20, 2013 at 11:47:56AM +0100, Tiziano Müller wrote:
> > Hi everyone
> > 
> > According to http://wiki.qemu.org/Migration/Storage section "Image
> > Formats" qemu can't do live migration without data corruption when using
> > qcow2 or qed due to the metadata caches.
> > Wasn't that fixed by commit 06d9260 ?
> 
> Yes, it is fixed. Depending on your backend, you still need
> cache=none/directsync, of course.

Thanks for the fast reply. Can you please elaborate on that (or post a
link to an explanation): What exactly does the backend have to provide
that for example cache=writeback can be used? Is there a way to test for
it?

Regards,
Tiziano

-- 
stepping stone GmbH
Neufeldstrasse 9
CH-3012 Bern
Telefon: +41 31 332 53 63
www.stepping-stone.ch
address@hidden