Should ubuntu 16 container run in lxd 5.11 / Ubuntu 22?

[sdeziel (Simon Deziel)]

Yeah, it’s a known issue with 16.04 containers on modern cgroup2 hosts, see

Ubuntu 16.04 containers don't boot properly after upgrading the host from 20.04 to 22.04

That’s normal, 22.04 uses cgroup2, 16.04 cannot boot under cgroup2. There are a number of forum posts covering this issue. Basically your best bet is to force your 22.04 system into cgroup1 mode by setting systemd.unified_hierarchy=false through the kernel command line.