[systemd-devel] race conditions after SIGTERM

[Andrei Borzenkov]

В Thu, 14 Aug 2014 14:24:49 +0200
Lennart Poettering <lennart at poettering.net> пишет:

> On Sun, 27.07.14 20:04, Reindl Harald (h.reindl at thelounge.net) wrote:
> 
> > but that still don't explain why "ExecStopPost=/sur/bin/true" or
> > whatever "ExecStopPost" solves that and if it is not supported
> > why "systemctl" don't return after the one and only process
> > exited
> 
> Well, this is a misunderstanding how ExecStop= and friends are supposed
> to work. They are supposed to do what they did on sysvinit:
> synchronously terminate a service. And not asynchronously do that.

I have to ask again - why is forcing every package to re-implement busy
loop waiting for process to exit better than doing this wait in one
place - PID 1 - which is the most natural place to do it?

>                                                                    We
> hence don't wait for anything else then, because what is left afterwards
> must be left-over processes that ExecStop= and friends couldn't clean up
> properly...
> 
> Lennart
>