Hi,<div><br></div><div>I&#39;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.</div>

<div><br></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div>virsh -c lxc:/// start instance-00000032</div><div>error: internal error The &#39;cpuacct&#39;, &#39;devices&#39; &amp; &#39;memory&#39; cgroups controllers must be mounted</div>

</blockquote><div><div><br></div><div>Really appreciated if someone could shed some lights. Seems to some libvirt / cgroup settings related.</div><div><br></div></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px">

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

</div></div><div><div>..</div></div></blockquote><div><div><br></div></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><div><div>$ chkconfig --list | grep cg</div></div></div><div><div><div>cgconfig        0:off   1:off   2:off   3:off   4:off   5:off   6:off</div>

</div></div><div><div><div>cgred           0:off   1:off   2:off   3:off   4:off   5:off   6:off</div></div></div></blockquote><div><div><br></div><div><br></div></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px">

<div>xml definition</div><div>--</div><div><div>&lt;domain type=&quot;lxc&quot;&gt;</div></div><div><div>  &lt;uuid&gt;252a2dc5-452c-4e9c-a593-8c386c9f47e6&lt;/uuid&gt;</div></div><div><div>  &lt;name&gt;instance-00000032&lt;/name&gt;</div>

</div><div><div>  &lt;memory&gt;524288&lt;/memory&gt;</div></div><div><div>  &lt;vcpu&gt;2&lt;/vcpu&gt;</div></div><div><div>  &lt;os&gt;</div></div><div><div>    &lt;type&gt;exe&lt;/type&gt;</div></div><div><div>    &lt;cmdline&gt;console=ttyS0&lt;/cmdline&gt;</div>

</div><div><div>    &lt;init&gt;/sbin/init&lt;/init&gt;</div></div><div><div>  &lt;/os&gt;</div></div><div><div>  &lt;clock offset=&quot;utc&quot;/&gt;</div></div><div><div>  &lt;devices&gt;</div></div><div><div>    &lt;filesystem type=&quot;mount&quot;&gt;</div>

</div><div><div>      &lt;source dir=&quot;/home/stack/nova_state/instances/instance-00000032/rootfs&quot;/&gt;</div></div><div><div>      &lt;target dir=&quot;/&quot;/&gt;</div></div><div><div>    &lt;/filesystem&gt;</div>

</div><div><div>    &lt;interface type=&quot;bridge&quot;&gt;</div></div><div><div>      &lt;mac address=&quot;fa:16:3e:73:67:54&quot;/&gt;</div></div><div><div>      &lt;source bridge=&quot;br100&quot;/&gt;</div></div><div>

<div>      &lt;filterref filter=&quot;nova-instance-instance-00000032-fa163e736754&quot;&gt;</div></div><div><div>        &lt;parameter name=&quot;IP&quot; value=&quot;10.0.0.8&quot;/&gt;</div></div><div><div>        &lt;parameter name=&quot;DHCPSERVER&quot; value=&quot;10.0.0.1&quot;/&gt;</div>

</div><div><div>        &lt;parameter name=&quot;PROJNET&quot; value=&quot;10.0.0.0&quot;/&gt;</div></div><div><div>        &lt;parameter name=&quot;PROJMASK&quot; value=&quot;255.255.255.0&quot;/&gt;</div></div><div><div>

      &lt;/filterref&gt;</div></div><div><div>    &lt;/interface&gt;</div></div><div><div>    &lt;console type=&quot;pty&quot;/&gt;</div></div><div><div>  &lt;/devices&gt;</div></div><div><div>&lt;/domain&gt;</div></div>
</blockquote>
<div><br></div><div>Log message with LIBVIRT_DEBUG=1 if that is helpful. </div><div><a href="http://pastebin.com/LjZ6Euma">http://pastebin.com/LjZ6Euma</a></div><div><br clear="all">--<br>Qiu Yu<br>
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