Re: [Qemu-devel] [pve-devel] QEMU LIve Migration - swap_free: Bad swap file entry

[Dr. David Alan Gilbert]

* Stefan Priebe (address@hidden) wrote:
> Am 10.02.2014 17:07, schrieb Dr. David Alan Gilbert:
> >* Stefan Priebe (address@hidden) wrote:
> >>i could fix it by explicitly disable xbzrle - it seems its
> >>automatically on if i do not set the migration caps to false.
> >>
> >>So it seems to be a xbzrle bug.
> >
> >Stefan can you give me some more info on your hardware and
> >migration setup;   that stressapptest (which is a really nice
> >find!) really batters the memory and it means the migration
> >isn't converging for me, so I'm curious what your setup is.
> 
> That one is devlopment by google and known to me since a few years.
> Google has detected that memtest and co are not good enough to
> stress test memory.

Hi Stefan,
  I've just posted a patch to qemu-devel that fixes two bugs that
we found; I've only tried a small stressapptest run and it seems
to survive with them (where it didn't before);  you might like to try
it if you're up for rebuilding qemu.

It's the one entitled ' [PATCH] Fix two XBZRLE corruption issues'

I'll try and get a larger run done myself, but I'd be interested to
hear if it fixes it for you (or anyone else who hit the problem).

Dave
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK