[Pkg-ganeti-devel] Bug#875435: ganeti: random freeze on some kvm guests in a jessie ganeti cluster

[Apollon Oikonomopoulos]

Control: reassign -1 qemu-system-x86
Control: found -1 1:2.1+dfsg-12+deb8u6
Control: tags -1 - moreinfo + confirmed
Control: affects -1 ganeti
Control: retitle -1 qemu-system-x86: guest lockup under light disk I/O when using aio=threads

Hi Thomas,

On 12:06 Mon 02 Oct     , Thomas Pierson wrote:
> Hi Apollon,
> 
> I did not experience any issues since I changed disk_aio to native and
> disk_cache to none on all instances and it was 3 weeks ago.
> So I believe you can close this bug now.
> 
> Beside that, maybe these parameters should be the new default in the
> ganeti package or maybe directly in qemu-kvm package?
> 
> Otherwise I will put this tips somewhere in the debian wiki maybe that
> could help other people.

Thanks for reporting back! Rather than close it, I'm reassigning it to 
qemu-system-x86. I've come across the same bug myself in the past, so I 
think it's useful to document it.

That said, I will consider setting aio=native as a default in future package 
versions.

Regards,
Apollon