It seems that (at least in Ubuntu 12.04 Precise), the cgroup-lite package is used to provide some cgroup capabilities for packages like libvirt-bin and lxc. It sets up a number of cgroups in /sys/fs/cgroup for example.
I was reading the very nice documentation on cgroups for redhat and I wanted to use some of the other cgroup commands that are only in cgroup-bin. But when I installed that, /sys/fs/cgroup became empty, presumably because the cgroup-lite package was uninstalled since it conflicts with cgroup-bin.
What am I missing after having done this? Is there a way to get the same default set of cgroups that cgroup-lite sets up? Is there any documentation for the cgroup definition that cgroup-lite provides?
The lxc documentation in the server guide talks a bit about cgroup-lite, but seems to assume that cgroup-lite will be installed, which won't be true if either recommended packages are skipped, or the alt]ernative, cgroup-bin, is installed.