[libvirt] vcpuinfo returns wrong CPU value for kvm
Daniel P. Berrange
berrange at redhat.com
Wed Apr 15 09:05:32 UTC 2009
On Tue, Apr 14, 2009 at 09:53:51PM +0200, Gerrit Slomma wrote:
> vcpuinfo returns a wrong value for kvm with libvirt 0.6.2:
> Furthermore even when pinning all - in my case both - vCPUs of the
> domain to the second CPU of the node virsh reports the first cpu as the
> assigned cpu.
>
> virsh # vcpupin rr019v3 0 1
> virsh # vcpuinfo rr019v3
> VCPU: 0
> CPU: 0
> Status: laufend
> CPU-Affinität: -y
>
> VCPU: 1
> CPU: 0
> Status: laufend
> CPU-Affinität: -y
>
>
> Watching at the code in virsh.c i am a little bit on my wits end where
> virVcpuInfoPtr is defined as i am no c-programmer - only some java on my
> side.
Unfortunately the answer is rather simple. We never fill in any value
for the 'cpu' field of virVcpuInfo for QEMU/KVM guests, which means
the 'CPU:' line should by virsh will always be zero. We need to fix
this in the QEMU driver.
Regards,
Daniel
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