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EdeWolf

Member

Registered: 2016-01-06

Posts: 79

[solved] finding the cause for the start of static unit files

In my ever ongoing quest to understand systemd booting and noting, that alsa-restore is a static service, I am wondering, how can I find out, what other unit made this service start?

# cd /usr/lib/systemd/system
# grep -ir 'alsa-restore' *.target
# grep -ir 'alsa-restore' *.service
# 

Nothing here, that would pull in alsa-restore. So, what does actually start it? Or rather, more in general, how can I find out, what loaded static service has been started by what other unit as a dependency? Kind of looking for a reverse dependency tree for service foo.

Last edited by EdeWolf (2016-05-18 21:02:54)

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,424

Website

Re: [solved] finding the cause for the start of static unit files

Not a Sysadmin issue, moving to NC...

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WorMzy

Forum Moderator

From: Scotland

Registered: 2010-06-16

Posts: 11,865

Website

Re: [solved] finding the cause for the start of static unit files

In my ever ongoing quest to understand systemd booting and noting, that alsa-restore is a static service, I am wondering, how can I find out, what other unit made this service start?

# cd /usr/lib/systemd/system
# grep -ir 'alsa-restore' *.target
# grep -ir 'alsa-restore' *.service
# 

Nothing here, that would pull in alsa-restore. So, what does actually start it? Or rather, more in general, how can I find out, what loaded static service has been started by what other unit as a dependency? Kind of looking for a reverse dependency tree for service foo.

You mean like 'systemctl list-dependencies --reverse'?

man systemctl

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EdeWolf

Member

Registered: 2016-01-06

Posts: 79

Re: [solved] finding the cause for the start of static unit files

Thanks for answering, thats it!