[CentOS-virt] Re: [kvm-devel] (long) kvm and virt-manager not ready for daily usage

Farkas Levente lfarkas at bppiac.hu
Sat Sep 8 20:50:02 UTC 2007

Anthony Liguori wrote:
>> the host see as i've 4 cpu. i've got a change to gives more cpu to the
>> guest, what's more they starts, but after a few minutes running the
>> system crash. not just the guest os but the host os crash without any
>> kind of info, log or any useful info what was the cause of it, but hard
>> reset helps:-((( first of all it's serious problem, even if it's a known
>> bug and documented somewhere (but there is not any kind of docs about
>> neither kvm nor virt-manager/libvirt and what i can find that very
>> limited), since all of the new hvm cpu (which is required for kvm) has
>> more core, so the guest can't use the real power of the cpu this means
>> i've to put a lots of guests with one virtual cpu to the host or
>> currently can't exploit these cpus.
> I'm having difficulty understanding what your problem is.  Are you

after i reread my sentences it was difficult for me too:-(

> saying that guest SMP isn't working for you?  The host OS definitely
> shouldn't crash.  Can you be more specific about what configs you are
> using?  There was a host oops fixed in kvm-36 so upgrading may help you.

exactly. i've got 4 phisical core (Intel Core 2 Quad) and i try to give
4 cpus for 2 guests and 2 cpus for a third guest and restart libvirtd.
the result was that even the host system crash without any stack trace
or kernel panic and only the hard reset helps.

  Levente                               "Si vis pacem para bellum!"

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