5.x+ kernel and LXC 3.0.3 doesn't work

[bderenzo]

Describe the bug
With 5.x kernel there is a problem with LXC 3.0.3 (lastest version available in raspbian repository).

The error message is :

Failed to setup limits for the "devices" controller. 
The controller seems to be unused by "cgfsng" cgroup driver or not enabled on the cgroup hierarchy

It seem's related to

• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944389
• lxc-start failed on cgroup_no_v1=all lxc/lxc#2991
• Fails to work with cgroupv2 / unified hierarchy lxc/lxc#3183

To reproduce

• Install lxc
• Set lxc.cgroup.memory.limit_in_bytes = 134217728 in container configuration file.
• Start container

[pelwell]

Same route cause as (so effectively a duplicate of) #3644.

[bderenzo]

@pelwell Thanks for your quick answer and sorry for the duplicate.

[pelwell]

It's not a problem, I'm just reducing the number of places to update when a fix gets merged (which should be soon).