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

Saurabh, please make sure blkio controller has been mounted on your host firstly then need to restart libvirtd service after manually mounting it. # lssubsys cpuset cpu cpuacct memory devices freezer net_cls blkio or # grep blkio /proc/mounts cgroup /cgroup/blkio cgroup rw,relatime,blkio 0 0 -- Regards, Alex ----- Original Message ----- From: "Saurabh Deochake" <saurabh.d04(a)gmail.com&gt; To: libvirt-users(a)redhat.com Sent: Tuesday, March 19, 2013 3:00:53 PM Subject: [libvirt-users] Errors while using blkiotune command 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? Thanks in advance. Regards, Saurabh Deochake _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users

On Wed, Mar 20, 2013 at 10:27:21AM +0530, Saurabh Deochake wrote: > Hi Alex, > I checked it again and found that blkio controller is already mounted. > Output of above commands are also same. Saurabh, Please check whether libvirt container is mounted in the blkio cgroup controller. (/cgroup/blkio/libvirt/), and if not the libvirt dameon has to be restarted, if it is available check for the respective domain is available in the respective container, (/cgroup/blkio/libvirt/qemu/<domain-name>), if not the respective domain also has to be restarted to get the cgroups reflected. I hope this helps. Regards, -Satheesh. > > So the problem still persists. > > > On Wed, Mar 20, 2013 at 8:23 AM, Alex Jia <ajia(a)redhat.com&gt; wrote: > > > Saurabh, please make sure blkio controller has > > been mounted on your host firstly then need to > > restart libvirtd service after manually mounting > > it. > > > > # lssubsys > > cpuset > > cpu > > cpuacct > > memory > > devices > > freezer > > net_cls > > blkio > > > > or > > > > # grep blkio /proc/mounts > > cgroup /cgroup/blkio cgroup rw,relatime,blkio 0 0 > > > > > > > > -- > > Regards, > > Alex > > > > > > ----- Original Message ----- > > From: "Saurabh Deochake" <saurabh.d04(a)gmail.com&gt; > > To: libvirt-users(a)redhat.com > > Sent: Tuesday, March 19, 2013 3:00:53 PM > > Subject: [libvirt-users] Errors while using blkiotune command > > > > > > > > > > > > > > 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? > > > > > > Thanks in advance. > > > > > > Regards, > > Saurabh Deochake > > > > _______________________________________________ > > libvirt-users mailing list > > libvirt-users(a)redhat.com > > https://www.redhat.com/mailman/listinfo/libvirt-users > > > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users