Using libcontainer on LXC

Question

I'm trying to run Docker (1.9) on a lxc container. Docker works fine if I use lxc exec driver but fails with libcontainer.

So my questions are:

• Is it possible to use libcontainer on lxc?
• If not, why is it so?

I vaguely know it probably doesn't make sense not to use lxc driver on lxc, but I want to understand more details.

Answer 1

That isn't surprising when you see pull request like PR 17700:

Remove LXC support

The LXC driver was deprecated in Docker 1.8.
Following the deprecation rules, we can remove a deprecated feature after two major releases.
LXC won't be supported anymore starting on Docker 1.10.

As I mentioned in "Difference between LXC and libcontainer", libcontainer (or runc now) is supposed to replace and abstract LXC. So "running libcontainer on lxc" doesn't seem to make sense.

Answer 2

Docker 1.10 has removed support for the LXC execution driver. That doesn't mean that you can't use Docker 1.10 inside of an LXC -- you definitely can.