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

[Dr. David Alan Gilbert]

* Stefan Priebe (address@hidden) wrote:
> anything i could try or debug? to help to find the problem?

I think the most useful would be to see if the problem is 
a new problem in the 1.7 you're using or has existed
for a while; depending on the machine type you used, it might
be possible to load that image on an earlier (or newer) qemu
and try the same test, however if the problem doesn't
repeat reliably it can be hard.

If you have any way of simplifying the configuration of the
VM it would be good; e.g. if you could get a failure on
something without graphics (-nographic) and USB.

Dave

> 
> Stefan
> 
> Am 07.02.2014 14:45, schrieb Stefan Priebe - Profihost AG:
> >it's always the same "pattern" there are too many 0 instead of X.
> >
> >only seen:
> >
> >read:0x0000000000000000 ... expected:0xffffffffffffffff
> >
> >or
> >
> >read:0xffffffff00000000 ... expected:0xffffffffffffffff
> >
> >or
> >
> >read:0x0000bf000000bf00 ... expected:0xffffbfffffffbfff
> >
> >or
> >
> >read:0x0000000000000000 ... expected:0xb5b5b5b5b5b5b5b5
> >
> >no idea if this helps.
> >
> >Stefan
> >
> >Am 07.02.2014 14:39, schrieb Stefan Priebe - Profihost AG:
> >>Hi,
> >>Am 07.02.2014 14:19, schrieb Paolo Bonzini:
> >>>Il 07/02/2014 14:04, Stefan Priebe - Profihost AG ha scritto:
> >>>>first of all i've now a memory image of a VM where i can reproduce it.
> >>>
> >>>You mean you start that VM with -incoming 'exec:cat /path/to/vm.img'?
> >>>But google stress test doesn't report any error until you start
> >>>migration _and_ it finishes?
> >>
> >>Sorry no i meant i have a VM where i saved the memory to disk - so i
> >>don't need to wait hours until i can reproduce as it does not happen
> >>with a fresh started VM. So it's a state file i think.
> >>
> >>>Another test:
> >>>
> >>>- start the VM with -S, migrate, do errors appear on the destination?
> >>
> >>I started with -S and the errors appear AFTER resuming/unpause the VM.
> >>So it is fine until i resume it on the "new" host.
> >>
> >>Stefan
> >>
> 
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK