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Re: [Xen-devel] [xen-unstable test] 12876: tolerable FAIL - PUSHED

On Tue, 15 May 2012, Ian Campbell wrote:
> >  After having fixed
> > the gntdev driver in our kernels and the pvops-centric shortcomings in
> > both qemu-s, the qdisk backend still looks somewhat unreliable in
> > testing that Olaf has performed. We haven't narrowed it so far, but
> > a resulting question of course is whether using that backend (and/or
> > qemu-upstream) by default for any guests is a good idea.
> CCing Stefano who made the patch to have PV guests use this guy. Please
> do share details when you have them.

I would prefer precise bug reports, and possibly patches, to "somewhat
unreliable" :-)

Please note that the userspace disk backend is basically the same in
upstream QEMU and qemu-xen-traditional, so switching back to the old
QEMU for pv guests wouldn't improve anything.

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