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Re: [libvirt] failed to mount cgroup



On Tue, Mar 5, 2013 at 5:48 PM, Hu Tao <hutao cn fujitsu com> wrote:
On Tue, Mar 05, 2013 at 05:29:02PM +0800, Gao feng wrote:
> On 2013/03/05 14:43, Yin Olivia-R63875 wrote:
> > Hi,
> >
> > I tried to run libvirt-1.0.2 with LXC as below, but it failed to mount cgroup.
> >
>
> You should change your cgroup configuration as below
> cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
> cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu)
> cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
> cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
> cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
> cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls)
> cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
> cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
>
> Libvirt lxc doesn't support configure cgroup as you did below now.

Why? IIRC old systems mount cgroup at /cgroup by default. This means
libvirt lxc has backward compatibility on supporting cgroup?

I think it is due to the upstream kernel change, which is merged in 2.6.36 version.

Discussion thread here for your reference.
http://thread.gmane.org/gmane.linux.kernel/1013171

--
Qiu Yu

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