[pve-devel] how to enable cgroupv2 for lxc ?

[Alexandre Derumier]

Hi,
I'm stil working on rdd && new pressure stats.

pressure stats in cgroup are only available in cgroupv2.
so it's working for qemu, but I  don't have counter for lxc as it's
still using cgroupv1.

I see that wolfgang have already add support for cgroupv2 in LXC::Cgroups,
I would like to enable it to test if I can get correct pressure info.

does somebody known how to enable it ? some sysctl or grub option maybe ?