RE: Biweekly KVM Test report, kernel 51bfd299... qemu a1fce560...

Ren, Yongjie
2012-06-13T10:28:42Z

> -----Original Message-----
> From: Marcelo Tosatti [mailto:mtosatti@redhat.com]
> Sent: Wednesday, June 13, 2012 7:25 AM
> To: Kevin Wolf
> Cc: Stefan Hajnoczi; Ren, Yongjie; Avi Kivity; kvm@vger.kernel.org; Liu,
> RongrongX; Anthony Liguori
> Subject: Re: Biweekly KVM Test report, kernel 51bfd299... qemu
> a1fce560...
>
> On Tue, Jun 12, 2012 at 09:45:16AM +0200, Kevin Wolf wrote:
> > Am 12.06.2012 03:52, schrieb Marcelo Tosatti:
> > > On Thu, Jun 07, 2012 at 01:13:50PM +0100, Stefan Hajnoczi wrote:
> > >>>>>> The 1st bad commit in your attached list is abc551bd
> > >>>>>> More detailed info:
> > >>>>>> 171d2f2249a360d7d623130d3aa991418c53716d good
> > >>>>>> fd453a24166e36a3d376c9bc221e520e3ee425af good
> > >>>>>> abc551bd456cf0407fa798395d83dc5aa35f6dbb bad
> > >>>>>> 823ccf41509baa197dd6a3bef63837a6cf101ad8 bad
> > >>>>>
> > >>>>> Thanks, this points to the qcow2 v3 changes. Let's try to find the
> exact
> > >>>>> culprit. I have rebased the qcow2 patches on top of that good
> merge
> > >>>>> (fd453a24). Please apply the attached mbox on top of this merge:
> > >>>>>
> > >>>>> git checkout fd453a24
> > >>>>> git am qcow2v3.mbox
> > >>>>>
> > >>>>> You can then start a git bisect between your new HEAD and
> fd453a24.
> > >>>>
> > >>>> Another thing you could try is if reverting e82dabd and bef0fd59
> fixes
> > >>>> the problem for you.
> > >>>>
> > >>> After reverting bef0fd59, it can work fine.
> > >>
> > >> I'm unable to reproduce this with qemu-kvm.git/master
> > >> (18b012756fd041556764dfa2bb1f307b6923fb71) or the commit you
> > >> 3fd9fedb9fae4517d93d76e93a2924559cacf2f6 reported as bad. The
> RHEL 6
> > >> guest boots without any issues. My host kernel is Linux 3.2 (Debian
> > >> 3.2.0-2-amd64). The guest is Linux 2.6.32-71.el6.
> > >>
> > >> Since the guest sees a disk read error, it may be useful to add
> > >> printfs to hw/ide/core.c:ide_sector_read_cb(). Let's find out why
> the
> > >> disk read is failing.
> > >
> > > Any news on this problem?
> >
> > We're still waiting for the test results with Jan's timer fix.
>
> OK, Ren, can you please retest with qemu-kvm.git master? TIA.
>
Yes, I re-tested with latest qemu-kvm.git master branch (commit: 0a948cbb).
I found the qcow2 image 'disk error' issue can't be reproduced in latest tree.
And, I can still reproduce it against commit e54f008e (May 9) as I reported for this bug.
Any recent patch has been checked in to fix this issue?
Maybe, Jan's "kvm: i8254: Fix conversion of in-kernel to userspace state"?