[pve-devel] Qemu / virtio-rng-pci

[Stefan Priebe]

Am 03.06.2015 um 17:29 schrieb Dietmar Maurer:
>>> Well, the patch check the version of qemu or the machine option or
>>> forcemachine from qemu live migration.
>>
>> Ah ok sorry didn't saw this. But I still think it's bad to rely on qemu
>> versions.
>> What about a pve compatibility flag in the conf file which gets only reset on
>> a fresh start? Might be also useful for suspends or snapshots? So it would be
>> possible to change options or defaults without the need to change qemu
>> version?
>
> I usually try to avoid complex things unless I really need them ...
>
> It is also unclear to me if you need the virtio-rng-pci device, or is the
> problem solved by those new CPU flags?
>

Sorry for all those noise. We discussed this today in our office. The 
problem is that the implementation done by redhat of the interface is 
not very good and it can result in hanging qemu processes. At least this 
is what i ready on some fedora postings.

So we go for havaged in each VM. Sorry for the noise ;-(

Greets,
Stefan