Comment 2 for bug 1293549

sudo lxc-create -t ubuntu-cloud -n base -- -r precise
sudo lxc-clone --snapshot -o base -n clone-aufs --backingstore aufs
sudo lxc-clone -o base -n clone-dir

I then started each container in different terminals

sudo lxc-start -n clone-dir
sudo lxc-start -n clone-aufs

and executed the following two commands:

sudo chown ubuntu:ubuntu /etc/ssl/private
ls /etc/ssl/private

This worked on clone-dir, and got permission failed on clone-aufs