why libvirtd fails to create vm with internal error 'cpuacct', 'devices' & 'memory' cgroups controllers must be mounted?

Question

To try out LXC on CentOS 6.4 host, I followed the steps in http://wiki.centos.org/HowTos/LXC-on-CentOS6, but it fails with ERROR: internal error 'cpuacct', 'devices' & 'memory' cgroups controllers must be mounted, when install vm using virt-install.

Answer 1

You need to run /etc/init.d/cgconfig daemon to mount the cgroups controllers.