Public bug reported: Even though Ubuntu 22.04 is definitely using cgroup2: cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
systemd appears to be using cgroup: cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd) cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct) cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb) cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids) cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma) cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event) cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio) cgroup on /sys/fs/cgroup/misc type cgroup (rw,nosuid,nodev,noexec,relatime,misc) When starting a container using default configuration from `systemd-nspawn@` unit it automatically selects cgroupv1 for some reason: systemd-nspawn@debian-sid.service - Container debian-sid Loaded: loaded (/lib/systemd/system/systemd-nspawn@.service; disabled; vendor preset: enabled) Active: active (running) since Sat 2024-07-20 00:48:30 +07; 1s ago Docs: man:systemd-nspawn(1) Main PID: 5210 (systemd-nspawn) Status: "Container running." Tasks: 2 (limit: 16384) Memory: 2.7M CGroup: /machine.slice/systemd-nspawn@debian-sid.service ├─payload │ └─5214 /usr/lib/systemd/systemd └─supervisor └─5210 systemd-nspawn --quiet --keep-unit --boot --link-journal=try-guest --network-veth -U --settings=override --ma> ก.ค. 20 00:48:30 ubuntu-dev systemd[1]: Starting Container debian-sid... ก.ค. 20 00:48:30 ubuntu-dev systemd[1]: Started Container debian-sid. ก.ค. 20 00:48:30 ubuntu-dev systemd-nspawn[5210]: Legacy cgroup v1 support selected. This is no longer supported ... ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: systemd-container 249.11-0ubuntu3.12 ProcVersionSignature: Ubuntu 6.5.0-44.44~22.04.1-generic 6.5.13 Uname: Linux 6.5.0-44-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sat Jul 20 00:43:45 2024 InstallationDate: Installed on 2024-07-19 (0 days ago) InstallationMedia: Ubuntu 22.04.4 LTS "Jammy Jellyfish" - Release amd64 (20240220) SourcePackage: systemd UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: systemd (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug jammy wayland-session -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2073625 Title: systemd-nspawn uses cgroupv1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/2073625/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs