[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH 7/9] virtio-blk: live migrate s->rq with multiqu

From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [PATCH 7/9] virtio-blk: live migrate s->rq with multiqueue
Date: Fri, 27 May 2016 14:42:22 -0700
User-agent: Mutt/1.6.0 (2016-04-01)

On Sat, May 21, 2016 at 05:37:27PM +0200, Paolo Bonzini wrote:
> On 21/05/2016 01:40, Stefan Hajnoczi wrote:
> >      while (req) {
> >          qemu_put_sbyte(f, 1);
> Could you just put an extra 32-bit queue id here if num_queues > 1?  A
> guest with num_queues > 1 cannot be started on pre-2.7 QEMU, so you can
> change the migration format (if virtio were using vmstate, it would be a

That's a good point: the same command-line would not work on old QEMU so
there is no possibility of new->old migration in the first place!

Your solution is much simpler than my hack (which took me a long time to
find and I was kind of proud of).  Will change for v2.


Attachment: signature.asc
Description: PGP signature

reply via email to

[Prev in Thread] Current Thread [Next in Thread]