[sheepdog-users] Guests do not start after update

Liu Yuan namei.unix at gmail.com
Tue Aug 6 10:45:05 CEST 2013


On Mon, Aug 05, 2013 at 03:00:11PM +0200, Valerio Pachera wrote:
> The problem is repeatable.
> I've been also rebooting the hosts and formatting the cluster twice.
> 
> root at test004:~# time qemu-img convert -f qcow2  wheezy_template.qcow2
> sheepdog:wheezy_template
> real    0m38.084s
> user    0m6.756s
> sys     0m6.456s
> 
> root at test004:~# time qemu-img convert -f qcow2 -t directsync
> wheezy_template.qcow2 sheepdog:wheezy_template2
> real    3m4.104s
> user    0m6.192s
> sys     0m5.900s
> 
> root at test004:~# time qemu-img convert -f qcow2  wheezy_template.qcow2
> sheepdog:wheezy_template3
> real    0m38.218s
> user    0m6.620s
> sys     0m6.456s
> 
> qemu-system-x86_64 -name wheezy_template -enable-kvm -drive
> file=sheepdog:wheezy_template,cache=writeback,if=virtio  (do not work)
> qemu-system-x86_64 -name wheezy_template2 -enable-kvm -drive
> file=sheepdog:wheezy_template2,cache=directsync  (works)
> qemu-system-x86_64 -name wheezy_template3 -enable-kvm -drive
> file=sheepdog:wheezy_template3,cache=directsync  (work)
> 
> I shutdown wheezy_template3 and use cache
>   qemu-system-x86_64 -name wheezy_template3 -enable-kvm -drive
> file=sheepdog:wheezy_template3,cache=writeback (do not work)

I've tracked down the culprit:the newly introduced backgroud pusher. But I am
still in the way fixing the bug that cause qemu-img convert fail to transform
images intact.

Thanks
Yuan



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