Bug#985446: release-notes: cgroupv2 is the default cgroup hierarchy
biebl at debian.org
Thu Mar 18 11:35:48 GMT 2021
X-Debbugs-Cc: pkg-systemd-maintainers at lists.alioth.debian.org
Starting with bullseye, the default cgroup hierarchy will be unified,
ie. cgroupv2 only.
We have this section in our systemd.NEWS file:
systemd (247.2-2) unstable; urgency=medium
systemd now defaults to the "unified" cgroup hierarchy (i.e. cgroupv2).
This change reflects the fact that cgroups2 support has matured
substantially in both systemd and in the kernel.
All major container tools nowadays should support cgroupv2.
If you run into problems with cgroupv2, you can switch back to the previous,
hybrid setup by adding "systemd.unified_cgroup_hierarchy=false" to the
kernel command line.
You can read more about the benefits of cgroupv2 at
-- Michael Biebl <biebl at debian.org> Mon, 21 Dec 2020 18:40:10 +0100
We should add something similar to the release notes.
The above text could be a good starting point.
We track issues related to cgroupv2 via user tags .
Some tools, most notably probably is libcgroup , don't support
More information about the Pkg-systemd-maintainers