[Lxc-users] Archlinux 3.0 Kernel update breaks LXC

[Daniel Lezcano]

On 08/13/2011 01:54 PM, John wrote:
> I've just replaced my "lxc" package with "lxc-git" and it's working 
> again. Many thanks.
> (my installed "lxc" package was probably one version stale also, which 
> was most likely the problem)
>
> I guess there's been a change in the kernel. before seeing your response 
> started to check the kernel config to fix this and noted that 
> CONFIG_CGROUP_NS is gone.
>
> Anyway, all working now.

The ns_cgroup was removed from the kernel by your humble servant :)

http://www.spinics.net/lists/mm-commits/msg80389.html

A compatibility flag has been added in the cgroup : clone_children.

Maby the version of the package you were using was not aware of this
change. A version of lxc >= 0.7.4 should be used to take into account
this change in the kernel. It will detect if the ns_cgroup is present or
not and use the compatibility flag in case.