[Openstack-operators] qemu 1.x to 2.0

Joe Topjian joe at topjian.net
Tue Feb 24 19:25:55 UTC 2015

Hi Mathieu,

Yeah, luckily I had an old copy of pxe-virtio.rom and just distributed it
via Puppet. I agree that it should be accessible via UCA.

As an update from my side: while things were working well for a while, we
had a few users report reboot issues. kvm/libvirt refused to start these
"legacy" instances. We were unable to determine if this was a coincidental
edge case, so to just get rid of this issue entirely, we ended up doing a
cloud-wide live-migration-shuffle. We have not had any issues since.

Note that if none of the prior work was done, live-migration wouldn't have
even worked and we would have had to do a cloud-wide hard-reboot of
instances. :/

Let me know if you have any more questions with this. :)


On Tue, Feb 24, 2015 at 11:40 AM, Mathieu Gagné <mgagne at iweb.com> wrote:

> Joe,
> Finally got time to check the QEMU 2.0 upgrade. =)
> On 2014-11-26 11:30 PM, Joe Topjian wrote:
>> Upon trying a migration again, I got an error about a
>> missing pxe-virtio.rom.12.04. This was also mentioned in this bug report:
>> https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1291321
>> So I copied the /usr/share/qemu/pxe-virtio.rom file from a compute node
>> that wasn't yet upgraded as /usr/share/qemu/pxe-virtio.rom.12.04 on the
>> upgraded node (and the destination node of the migration). I rebooted
>> libvirt-bin and sure enough the migration worked!
> I found out that the /usr/share/qemu/pxe-virtio.rom.12.04 file is
> packaged in the kvm-ipxe-precise package.
> Unfortunately, it is missing from UCA for Icehouse (Ubuntu 12.04).
> The package is only available in the Ubuntu 14.04 repository.
> How did you fix it on your side? Did you automate the copy of
> pxe-virtio.rom.12.04?
> Shouldn't the kvm-ipxe-precise package be made available in UCA?
> --
> Mathieu
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