Re: [Xen-devel] [qemu-mainline test] 31329: regressions - FAIL

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

CC'ing Konrad and David as this is most probably a problem with Linux.

On Mon, 3 Nov 2014, Ian Jackson wrote:
> Ian Campbell writes ("Re: [Xen-devel] [qemu-mainline test] 31329: regressions 
> - FAIL"):
> > Looks like this test hasn't succeeded since 6 October (flight 30603).
> > 
> > Looking over the various failures since then the 
> >  test-amd64-i386-pair   17 guest-migrate/src_host/dst_host fail REGR. vs. 
> > 30603
> > one has been consistently failing.
> 
> This is the longstanding mptsas swiotlb bug.
> 
> In this particular test case, the migration test source host reports
> lots of swiotlb full messages, first from bnx2 and then from mptsas.
> 
> The first such message is from bnx2 in the middle of guest boot
> (32-bit PV Debian guest).  The guest is booting on the source host,
> and the guest's filesystem is provided via nbd.  The source host has
> the nbd client and the destination host the nbd server.
> 
> I have added `swiotlb=26422' to the host property `install-append
> wheezy' for these two machines.  Hopefully this will either work
> around the problem, or at least provide more information.
 

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