On 03/19/2013 01:00 AM, Saurabh Deochake wrote:
> Hi all,
>
> I want to limit the I/O bandwidth inside the container, so I used virsh
> command blkiotune. But when I enter a command:
>
> virsh # blkiotune lxcguest --weight 250
>
> I get following errors:
>
> error: Unable to change blkio parameters
> error: Requested operation is not valid: blkio cgroup isn't mounted
>
> I also have blkio cgroup mounted. What can be the problem?

Have you restarted libvirtd since you mounted the blkio cgroup?  Which
version of libvirt are you running, on what platform?

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