[systemd-devel] MemoryMax not working with `systemd-run --user` using hybrid cgroups hierarchy

Lennart Poettering lennart at poettering.net
Thu Nov 8 10:33:48 UTC 2018


On Do, 08.11.18 11:24, Piotr Dobrogost (2018 at p.dobrogost.net) wrote:

> Additional question; is there a way to find out which type of hierarchy
> does systemd use?

Try this:

stat -fc %T /sys/fs/cgroup/

if that reports "cgroups2fs" then you are in full cgroupsv2 mode. If
it returns "tmpfs" then you are in either full cgroupsv1 mode, or in
hybrid mode. Then, check if /sys/fs/cgroup/unified exists. If it does,
then you are in hybrid mode. if not you are in pure cgroupsv1 mode.

Lennart

-- 
Lennart Poettering, Red Hat


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