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Re: [Qemu-devel] [PATCH 2/3] runstate: introduce suspended state

From: Luiz Capitulino
Subject: Re: [Qemu-devel] [PATCH 2/3] runstate: introduce suspended state
Date: Fri, 4 May 2012 10:33:38 -0300

On Fri, 04 May 2012 10:50:08 +0200
Gerd Hoffmann <address@hidden> wrote:

>   Hi,
> > However, I've ran into a different issue today: migrating while suspended
> > doesn't work. The target VM seems to be locked into S3, it just doesn't 
> > resume.
> > 
> > Haven't investigated yet, but this is expected to work, right?
> Well, that one is still on the todo list.  There is the temporary
> stopgap to just resume the machine before migration so we don't have to
> migrate the is_suspended bit (not merged).


> I plan to fix that properly, it needs some discussion to figure a sane
> way as we don't have a vmstate section for global state like this where
> we could attach a subsection to.  That didn't happen yet though ...

There's a quite simple and stupid way to do it. When we migrate an stopped
VM, it's automatically resumed on the target. We could do the same for a
suspended VM: we could automatically resume it before migrating, as you said

That's not the behavior I'd expect, I mean I would expect a stopped VM to
remain stopped after it's migrated. But it has always been this way and I'm
afraid we can't change this.

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