Bug#977681: systemd: New error: Failed to migrate controller cgroups

[Michael Biebl]

Am 18.12.20 um 20:23 schrieb Helge Kreutzmann:
> Package: systemd
> Version: 247.1-3
> Severity: minor
> 
> 
> A few days ago (maybe correlated with a systemd update, if it matters
> I can investigate) I see for every login the follwoing message:
> 
> Dec 17 17:30:28 samd systemd[1935]: -.slice: Failed to migrate controller cgroups from /user.slice/user-109.slice/user at 109.service, ignoring: Permission denied
> 
> This is a service user, but for ordinary users this message is the
> same, except the UID is 1000, 1001 or similar, of course.
> 
> If this message is harmless, please consider adding a logcheck rule
> masking this out.
> 
> I've not experienced any visible problem.
> 

https://salsa.debian.org/systemd-team/systemd/-/blob/debian/master/src/core/cgroup.c#L1905

This is from unit_update_cgroup() when running under cgroupv1.
The log message will go away once we make the switch to cgroupv2.

Michael


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