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henriq20

Member

Registered: 2022-06-27

Posts: 2

Stop Docker before unmounting SSD on shutdown

Every time I reboot or shut down my computer, I get this error:

[FAILED] Failed unmounting /run/media/SSD.

I keep Docker's data under /run/media/SSD/docker. The problem seems to be that the docker service is not stopped until /run/media/SSD is unmounted.

When I run sudo systemctl stop docker before shutting down, I don't get that error. So I'm sure it has to do with docker's not being stopped in time.

How do I stop docker just before my SSD is unmounted?

jonno2002

Member

Registered: 2016-11-21

Posts: 868

Re: Stop Docker before unmounting SSD on shutdown

find your mount target for "/run/meda/SSD" using:

systemctl list-units |grep /run/media/SSD

will be somthing like 'run-media-SSD.mount'

then create a drop in file for docker.service

systemctl edit docker.service

and add the .mount target to After and BindsTo

should look somthing like this:

### Editing /etc/systemd/system/docker.service.d/override.conf
### Anything between here and the comment below will become the new contents of the file

BindsTo=run-media-SSD.mount
After=network-online.target docker.socket firewalld.service run-media-SSD.mount

### Lines below this comment will be discarded
...........

then reload systemd daemon:

systemd daemon-reload

and that SHOULD work, i havent tested it tho

henriq20

Member

Registered: 2022-06-27

Posts: 2

Re: Stop Docker before unmounting SSD on shutdown

It worked!! Thank you so much

My drop-in file:

[Unit]
BindsTo=run-media-henriq-SSD.mount
After=network-online.target docker.socket firewalld.service run-media-henriq-SSD.mount