[systemd-devel] Antw: Re: Antw: Re: failing unmounts during reboot

[Ulrich Windl]

>>> Lennart Poettering <lennart at poettering.net> schrieb am 29.07.2019 um 14:11
in
Nachricht <20190729121150.GE19185 at gardel-login>:
> On Mo, 29.07.19 14:05, Ulrich Windl (Ulrich.Windl at rz.uni-regensburg.de) 
> wrote:
> 
>> > Key here is that these scope units are ordered after
>> > systemd‑user‑sessions.service, which also means they are terminated
>> > before that service is terminated (since in systemd the shutdown order
>> > is always the inverse of the startup order).
>>
>> I'm afraid the original answer was wrong: "We automatically kill all
unpriv
>> user programs on shutdown."
>>
>> If a user started a process outside of systemd, systemd does not
>> list that.
> 
> I am not sure what "outside of systemd" is supposed to mean? If
> systemd is PID 1 all userspace runs under systemd's supervision.
> 
>> I'm also surprised who _few_ scopes are being shown:
> 
> How many should be there? It shows active sessions. i.e. for each
> entry in "loginctl list-sessions"'s output one (plus one for each
> session that ended but still has processes running, i.e. is abandoned,
> see below).
> 
> Consider using "systemd-cgls" to see the general structure of your
> system in regards to services, scopes and such.
> 
>> 3 loaded units listed.
>> To show all installed unit files use 'systemctl list-unit-files'.
>>
>> Where is the rest?
> 
> Not sure what the "rest" is supposed to mean.
> 
>> Also, the "abandonded" session has a process that is very much active:
> 
> An "abandoned" scope is one the app that created it has lost interest
> in or died. logind is one such app, and as mentioned creates a scope
> unit for each session. And it abandons the scope for a session it
> manages when a session ends but there are still processes in the scope
> left.

OK: The "abandoned" scope most likely is a daemon process started in an
interactive session that does no longer exist ("logout").
Is there a command to display the actual processes abelonging to each scope?

> 
> Lennart
> 
> --
> Lennart Poettering, Berlin