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Re: [libvirt] failed to mount cgroup



There's no cgroug config file in rootfs on my embedded PPC platform, I could mount cgroups manually.
Should it be hierarchy directory mounted?

Or could also looks like:
# Mount -t cgroup cgroup /sys/fs/cgroup

# mount
rootfs on / type rootfs (rw)
/dev/root on / type ext2 (rw,relatime)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
none on /dev type tmpfs (rw,relatime,mode=755)
devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /var/volatile type tmpfs (rw,relatime)
tmpfs on /media/ram type tmpfs (rw,relatime)
cgroup on /sys/fs/cgroup type cgroup (rw,relatime,freezer,devices,memory,cpuacct,cpuset)

But it also failed to mount cgroup on /sys/fs/cgroup

# virsh -c lxc:/// start vm1
error: Failed to start domain vm1
error: internal error guest failed to start: 2013-03-07 08:31:02.418+0000: 2387: info : libvirt version: 1.0.3
2013-03-07 08:31:02.418+0000: 2387: warning : lxcCapsInit:73 : Failed to get host power management capabilities
PATH=/bin:/sbin TERM=linux container=lxc-libvirt container_uuid=8b8492e0-5d90-441c-8822-c04b8e72bda3 LIBVIRT_LXC_UUID=8b8492e0-5d90-441c-8822-c04b8e72bda3 LIBVIRT_LXC_NAME=vm1 /bin/sh
2013-03-07 08:31:02.522+0000: 1: error : lxcContainerMountCGroups:1892 : Failed to mount cgroup on '/sys/fs/cgroup': No such file or directory
2013-03-07 08:31:02.522+0000: 2388: error : virLXCControllerRun:1468 : error receiving signal from container: Input/output error


Best Regards,
Olivia
> -----Original Message-----
> From: Gao feng [mailto:gaofeng cn fujitsu com]
> Sent: Tuesday, March 05, 2013 5:29 PM
> To: Yin Olivia-R63875
> Cc: libvir-list redhat com
> Subject: Re: [libvirt] failed to mount cgroup
> 
> 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.




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