[libvirt-users] What features of kernel are required to support virDomainGetCPUStats?

[Eric Blake]

On 05/27/2012 10:38 PM, Zhihua Che wrote:
> Hi,
>     Weeks ago, I developed my app under ubuntu-11.10 (kernel 3.0) with
> lilbvirt-0.9.10. In my code , I used virDomainGetCPUStats to query cpu
> usage info of domains, and it worked well.
> However, today, I port my code to ubuntu-10.04.4 (kernel 2.6.32) with
> libvirt-0.9.10, I find the function virDomainGetCPUStats can't work
> and complains "this function is not supported by the connection
> driver: virDomainGetCPUStats".

That's not a problem with your kernel, but with your libvirtd being too
old.  virDomainGetCPUStats was not wired up for qemu until libvirt
0.9.11.  See here for the full table of which libvirtd versions support
which APIs for a given URI:

http://libvirt.org/hvsupport.html

-- 
Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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