0007060: libvirt error "Requested operation is not valid: cgroup CPUACCT controller is not mounted"

When trying to use either virsh or the python-libvirt library to get statistics about kvm you get the following error:<br /> <br /> [<a href="mailto:root@uk5-cnkvm014">root@uk5-cnkvm014</a> ~]# virsh cpu-stats i-17-825-VM<br /> error: Failed to virDomainGetCPUStats()<br /> <br /> error: Requested operation is not valid: cgroup CPUACCT controller is not mounted<br /> <br /> however, cgroups does have cpuaccount mounted:<br /> <br /> [<a href="mailto:root@uk5-cnkvm014">root@uk5-cnkvm014</a> ~]# cat /etc/cgconfig.conf <br /> #<br /> # Copyright IBM Corporation. 2007<br /> #<br /> # Authors: Balbir Singh <<a href="mailto:balbir@linux.vnet.ibm.com">balbir@linux.vnet.ibm.com</a>><br /> # This program is free software; you can redistribute it and/or modify it<br /> # under the terms of version 2.1 of the GNU Lesser General Public License<br /> # as published by the Free Software Foundation.<br /> #<br /> # This program is distributed in the hope that it would be useful, but<br /> # WITHOUT ANY WARRANTY; without even the implied warranty of<br /> # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.<br /> #<br /> # See man cgconfig.conf for further details.<br /> #<br /> # By default, mount all controllers to /cgroup/<controller><br /> <br /> mount {<br /> cpuset = /cgroup/cpuset;<br /> cpu = /cgroup/cpu;<br /> cpuacct = /cgroup/cpuacct;<br /> memory = /cgroup/memory;<br /> devices = /cgroup/devices;<br /> freezer = /cgroup/freezer;<br /> net_cls = /cgroup/net_cls;<br /> blkio = /cgroup/blkio;<br /> }<br /> <br /> group virt {<br /> cpu {<br /> cpu.shares = 9216;<br /> }<br /> }<br /> <br /> [<a href="mailto:root@uk5-cnkvm014">root@uk5-cnkvm014</a> ~]# ls -la /cgroup/cpuacct/<br /> total 4<br /> drwxr-xr-x. 3 root root 0 Nov 27 11:44 .<br /> drwxr-xr-x. 10 root root 4096 Oct 16 15:41 ..<br /> --w--w--w-. 1 root root 0 Nov 27 11:44 cgroup.event_control<br /> -rw-r--r--. 1 root root 0 Nov 27 11:44 cgroup.procs<br /> -r--r--r--. 1 root root 0 Nov 27 11:44 cpuacct.stat<br /> -rw-r--r--. 1 root root 0 Nov 27 11:44 cpuacct.usage<br /> -r--r--r--. 1 root root 0 Nov 27 11:44 cpuacct.usage_percpu<br /> drwxr-xr-x. 4 root root 0 Nov 27 11:44 libvirt<br /> -rw-r--r--. 1 root root 0 Nov 27 11:44 notify_on_release<br /> -rw-r--r--. 1 root root 0 Nov 27 11:44 release_agent<br /> -rw-r--r--. 1 root root 0 Nov 27 11:44 tasks<br /> <br /> [<a href="mailto:root@uk5-cnkvm014">root@uk5-cnkvm014</a> ~]# cat /proc/cgroups <br /> #subsys_name hierarchy num_cgroups enabled<br /> cpuset 9 52 1<br /> ns 0 1 1<br /> cpu 10 53 1<br /> cpuacct 11 52 1<br /> memory 12 16 1<br /> devices 13 16 1<br /> freezer 14 16 1<br /> net_cls 15 1 1<br /> blkio 16 16 1<br /> perf_event 0 1 1<br /> net_prio 0 1 1