[systemd-devel] How to find out the processes systemd-shutdown is waiting for?

[Lennart Poettering]

On Mi, 02.03.22 13:02, Arian van Putten (arian.vanputten at gmail.com) wrote:

> I've seen this a lot with docker/containerd. It seems as if for some reason
> systemd doesn't wait for their  cgroups to cleaned up on shutdown. It's
> very easy to reproduce. Start a docker container and then power off the
> machine. Since the move to cgroups V2 containerd should be using systemd to
> manage the cgroup tree so a bit puzzling why it's always happening.
>
> Something seems to be off with containerd's integration into systemd but
> I'm not sure what.

Docker traditionally has not followed any of our documented ways to
interact with cgroups, even though they were made aware of them, not
sure why, I think some systemd hate plays a role there. I am not sure
if this has changed, but please contact Docker if you have issues with
Docker, they have to fix their stuff themselves, we cannot work around
it.

Lennart

--
Lennart Poettering, Berlin