[Bug 403215] Re: 2.6.31 guest vm's unable to use virtio

[Jamie Strandboge]

I'm not sure this is completely fixed. I saw the following which states 0.11 still has the issue.
http://www.mail-archive.com/kvm@vger.kernel.org/msg22891.html

The changelog for qemu-kvm doesn't make any mention of this bug either.

I was doing ISO testing for
http://iso.qa.ubuntu.com/qatracker/result/3238/41 and had 3 other ISO
tests running at the same time. I specified ubuntuKarmic to libvirt,
which uses virtio. While the other 3 ISO tests worked fine, the one I
did without LVM had problems in mountall:

mountall: Cancelled
General error mounting filesystems.
A maintenance shell will now be started.
CONTROL-D will terminate this shell and re-try.

This happened *after* I logged in as a regular user and the console kept
alternating back and forth between the maintenance shell and the regular
user shell. It was very confusing.

I checked dmesg and the only interesting thing I saw was:
[    15.868803] JBD: barrier-based sync failed on vda1:8 - disabling barriers

-- 
2.6.31 guest vm's unable to use virtio
https://bugs.launchpad.net/bugs/403215
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