Pvebash

• Traversing an OpenVZ container (including non bootable ones) in Proxmox VE 3.4 and earlier can be done using the /usr/bin/pvebash script chmodded to 755.
• When migrating OpenVZ containers to the new LXC container ecosystem, the said `pvebash <CTID> private` can be used to set it right at the outset.

• In LXC, there may be some script like OpenVZ's Proxbash that does nearly the same work.

• Mounting a LXC raw image to rootfs

• LXC Debugging Documentation

• Since 2016: LXC hides the container mount namespace from the host, so you cannot see the rootfs (unless you use ZFS). We plan to implement some helper commands to make it easier to copy files from/to containers.