Does Ubuntu 16.04 lxc container work on Ubuntu 22.04 lxd host?

[sdeziel (Simon Deziel)]

It could be a cgroup version mismatch. Please check setting systemd.unified_cgroup_hierarchy=false helps as mentioned in

Container startup cannot create cgroup

Seems like an issue with the host’s cgroup setup, the error “Failed to create cgroup at_mnt” was mentioned in here too: You could also try this: