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

Marcelo Tosatti
2012-06-12T11:01:48Z

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.
>
> But, Marcelo, you mentioned that you can reproduce it, too. Maybe you
> can give it a try?
>
> Kevin

I cannot. It was a different bug.