Re: [win-pv-devel] Problems with xenvbd

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

Il 21/08/2015 00:03, RafaÅ WojdyÅa ha scritto:
> On 2015-08-19 23:25, Paul Durrant wrote:
> > > -----Original Message----- From:
> > > win-pv-devel-bounces@xxxxxxxxxxxxxxxxxxxx [mailto:win-pv-devel-
> > > bounces@xxxxxxxxxxxxxxxxxxxx] On Behalf Of Rafal Wojdyla Sent: 18
> > > August 2015 14:33 To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx Subject:
> > > [win-pv-devel] Problems with xenvbd
> > >
> > > Hi,
> > >
> > > I've been testing the current pvdrivers code in preparation for
> > > creating upstream patches for my xeniface additions and I noticed
> > > than xenvbd seems to be very unstable for me. I'm not sure if it's
> > > a problem with xenvbd itself or my code because it seemed to only
> > > manifest when the full suite of our guest tools was installed along
> > > with xenvbd. In short, most of the time the system crashed with
> > > kernel memory corruption in seemingly random processes shortly
> > > after start. Driver Verifier didn't seem to catch anything. You can
> > > see a log from one such crash in the attachment crash1.txt.
> > >
> > > Today I tried to perform some more tests but this time without our
> > > guest tools (only pvdrivers and our shared libraries were
> > > installed). To my surprise now Driver Verifier was crashing the
> > > system every time in xenvbd (see crash2.txt). I don't know why it
> > > didn't catch that previously... If adding some timeout to the
> > > offending wait doesn't break anything I'll try that to see if I can
> > > reproduce the previous memory corruptions.
> > Those crashes do look odd. I'm on PTO for the next week but I'll have
> > a look when I get back to the office. I did run verifier on all the
> > drivers a week or so back (while running vbd plug/unplug tests) but
> > there have been a couple of changes since then.
> >
> > Paul
> No problem. I attached some more logs. The last one was during system
> shutdown, after that the OS failed to boot (probably corrupted
> filesystem since the BSOD itself seemed to indicate that). I think every
> time there is a BLKIF_RSP_ERROR somewhere but I'm not yet familiar with
> Xen PV device interfaces so not sure what that means.
>
> In the meantime I've run more tests on my modified xeniface driver to
> make sure it's not contributing to these issues but everything seemed to
> be fine there.
I also had a disk corruption on windows 10 pro 64 bit with pv drivers 
build of 11 august but I'm not sure that is related to winpv drivers, on 
same domU I started testing also snapshot with qcow2 disk overlay.
For this case I don't have useful information because don't try to boot 
windows at all but if rehappen I'll try to take other useful information.
_______________________________________________
win-pv-devel mailing list
win-pv-devel@xxxxxxxxxxxxxxxxxxxx
http://lists.xenproject.org/cgi-bin/mailman/listinfo/win-pv-devel