[systemd-devel] Order-only mount units?

[Andrei Borzenkov]

On 07.01.2023 19:06, Norbert Lange wrote:
> Hello,
> 
> Say want a service unit which mounts some stuff, then does further
> steps (create some initial files, etc..).
> The problem here is that it is not automatically ordered in regards to
> mounts in the subdirectories or some other dependencies like
> RequiresMountsFor - that would happen with a mount unit.
> 

Add them to /etc/fstab with "noauto" and use RequiresMountsFor. Unless I 
misunderstand what you need.

> So the idea would be to add a dummy mount unit with a dependency to the service.
> like this:
> 
> [Unit]
> Description=My dummy mount
> After=realmount.service
> 
> [Mount]
> # What were need to be adapted to what realmount.service does
> What=*
> Where=/mountpoint
> Type=*
> Options=remount
> 
> Any thought on this?
> Without a mount unit there is alot of implicit stuff thats hard to recreate.
> 
> Another option would be that realmount.service mounts on another path,
> then the dummy mount unit doing a "bind mount" or move, but I am not
> sure systemd allows that?
> 
> Norbert