cgroups don't get mounted inside LXD container

[palica]

Running LXD 2.* on openrc host and starting openrc container doesn't mount any cgroup inside the container.

  driver: lxc
  driver_version: 2.0.9
  kernel: Linux
  kernel_architecture: x86_64
  kernel_version: 4.13.10-1-dl3x0-g7-r1
  server: lxd
  server_pid: 18280
  server_version: "2.20"
  storage: btrfs
  storage_version: 4.10.2

[palica]

LXD/LXC people told me that OpenRC should take care of mounting cgroups inside container.

See:
LXD issue - https://github.com/lxc/lxd/issues/4052
LXD Forum - https://discuss.linuxcontainers.org/t/running-lxd-an-openrc-container-on-a-openrc-system-trouble-with-cgroups/843

[palica]

Solution to this would be something like removing cgroupsfs mount logic from the sysfs initscript and putting it in separate initscript and running it also in lxc containers.

I have made some edits to the sysfs initscript inside container and this is working for me.

Now cgroups get mounted also inside lxc/lxd container.

[palica]

Or implementing a detection if /sys is already mounted and skipping that part of script ...