[systemd-devel] unable to attach pid to service delegated directory in unified mode after restart

[Silvio Knizek]

Am Montag, dem 21.02.2022 um 18:07 +0100 schrieb Felip Moll:
> The hard requirement that my project has is that processes need to
> live even if the daemon who forked them dies.
> Roughly it is how a batch scheduler works: one controller sends a
> request to my daemon for launching a process in the name of a user,
> my daemon forks-exec it. At some point my daemon can be stopped,
> restarted, upgraded, whatever but the forked processes need to always
> be alive because they are continuing their work. We are talking here
> about the HPC world.
You could invoke a man:systemd-run for each new process. Than you can
put every single job in a seperate .slice with its own
man:systemd.resource-control applied.
This would also mean that you don't need to compile against libsystemd.
Just exec() accordingly if a systemd-system is detected.

BR
Silvio