After enabling the unified cgroups hierarchy in systemd and running some tests, I can confirm that most things are working as expected, except for snapd.
The Bileto autopkgtests show (ignoring two unrelated/flaky failures in universe packages: suricata & mosquitto) that:
* The systemd "tests-in-lxd" test fails, for snapd's "WARNING: cgroup v2 is not fully supported yet, proceeding with partial confinement" stderr output. If that stderr output is muted/ignored (by modifying autopkgtests itself) the test passes, as tested locally.
* The snapd "autopkgtest:adt-local:tests/smoke/sandbox" spread test fails with an "all ubuntu systems must have strict confinement" error message.
After enabling the unified cgroups hierarchy in systemd and running some tests, I can confirm that most things are working as expected, except for snapd.
https:/ /bileto. ubuntu. com/excuses/ 4602/impish. html
The Bileto autopkgtests show (ignoring two unrelated/flaky failures in universe packages: suricata & mosquitto) that:
* The systemd "tests-in-lxd" test fails, for snapd's "WARNING: cgroup v2 is not fully supported yet, proceeding with partial confinement" stderr output. If that stderr output is muted/ignored (by modifying autopkgtests itself) the test passes, as tested locally.
* The snapd "autopkgtest: adt-local: tests/smoke/ sandbox" spread test fails with an "all ubuntu systems must have strict confinement" error message.