[libvirt-users] libvirt with lxc: internal error The 'cpuacct', 'devices' & 'memory' cgroups controllers must be mounted

[unicell]

Hi,

I'm running OpenStack to manage LXC instance through libvirt. The same
setting runs perfectly well on Ubuntu 12.04, while on CentOS 6u3, libvirt
dumped following message when starting lxc instance.

virsh -c lxc:/// start instance-00000032
error: internal error The 'cpuacct', 'devices' & 'memory' cgroups
controllers must be mounted


Really appreciated if someone could shed some lights. Seems to some libvirt
/ cgroup settings related.

$ cat /proc/mounts
..
none /cgroup cgroup
rw,relatime,net_prio,perf_event,blkio,net_cls,freezer,devices,memory,cpuacct,cpu,ns,cpuset
0 0
..


$ chkconfig --list | grep cg
cgconfig        0:off   1:off   2:off   3:off   4:off   5:off   6:off
cgred           0:off   1:off   2:off   3:off   4:off   5:off   6:off



xml definition
--
<domain type="lxc">
  <uuid>252a2dc5-452c-4e9c-a593-8c386c9f47e6</uuid>
  <name>instance-00000032</name>
  <memory>524288</memory>
  <vcpu>2</vcpu>
  <os>
    <type>exe</type>
    <cmdline>console=ttyS0</cmdline>
    <init>/sbin/init</init>
  </os>
  <clock offset="utc"/>
  <devices>
    <filesystem type="mount">
      <source
dir="/home/stack/nova_state/instances/instance-00000032/rootfs"/>
      <target dir="/"/>
    </filesystem>
    <interface type="bridge">
      <mac address="fa:16:3e:73:67:54"/>
      <source bridge="br100"/>
      <filterref filter="nova-instance-instance-00000032-fa163e736754">
        <parameter name="IP" value="10.0.0.8"/>
        <parameter name="DHCPSERVER" value="10.0.0.1"/>
        <parameter name="PROJNET" value="10.0.0.0"/>
        <parameter name="PROJMASK" value="255.255.255.0"/>
      </filterref>
    </interface>
    <console type="pty"/>
  </devices>
</domain>


Log message with LIBVIRT_DEBUG=1 if that is helpful.
http://pastebin.com/LjZ6Euma

--
Qiu Yu
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