[Qemu-devel] Re: Qemu-KVM Livate Migration 0.12.2 -> 0.12.3/4 broken?

[Avi Kivity]

On 05/16/2010 11:04 PM, Juan Quintela wrote:
> > > So, to make the story short: I know what is happening, and I know how to
> > > fix it, just that fix is not trivial.  I just need time.
> > >
> > >        
> > Meanwhile, we have a broken 0.12.4.  Is there a quick'n'dirty
> > workaround that will be forward compatible with the real fix that we
> > can push out?
> >      
> revert the patch.  It almost never happen (being in the middle of one
> IO) while migrating.
>    

If the guest does any work, it will always happen.

>    
> > We've regressed from failing some migrations to failing all migrations.
> >      
> Humm, 0.12.4 ->  0.12.4 should work.  My advise is just revert the patch
> and live with it for another week, what do you think?
>    

A week is fine.  I'm not going to release 0.12.4.1 for the week until 
you fix it, and just changing things in git doesn't help users.

--
Do not meddle in the internals of kernels, for they are subtle and quick to 
panic.