[libvirt-users] Errors while using blkiotune command

[Saurabh Deochake]

Hi Satheesh,

My LXC domain is available in /cgroup/blkio/libvirt/lxc/. I also restarted
the libvirtd. After restart, I'm facing the same problem with memtune
command also.




On Wed, Mar 20, 2013 at 1:54 PM, Satheesh Rajendran <
sathnaga at linux.vnet.ibm.com> wrote:

> 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 at redhat.com> 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 at gmail.com>
> > > To: libvirt-users at 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 at redhat.com
> > > https://www.redhat.com/mailman/listinfo/libvirt-users
> > >
>
> > _______________________________________________
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> > libvirt-users at redhat.com
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>
>
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