systemd (Was Re: tmpfs for strategic directories)

Lennart Poettering mzerqung at
Tue Jun 1 00:32:36 UTC 2010

On Wed, 26.05.10 09:01, Jeff Spaleta (jspaleta at wrote:

> On Wed, May 26, 2010 at 5:55 AM, Lennart Poettering
> <mzerqung at> wrote:
> > Well, that depends on configuration.
> > In systemd you can choose individually for each unit whether you want to
> > allow it to continue run processes on shut down, whether you want the
> > main process killed, the process group to be killed or the cgroup to be
> > killed.
> Do you have a service file example yet in systemd git that can be used
> to get an understanding of the various configuration options which
> determine what gets killed and what doesn't?

Nope, not really.

But it is as easy as this: when we stop a service the "KillMode=" option
controls whether and how any processes remaining after the "ExecStop="
command (if there is such a command, and if there are any processes left)
is killed.

KillMode=control-group → the entire cgroup is shot down
KillMode=process-group → only the process group of the process we forked is shot down 
KillMode=process → only the process we forked is shot down
KillMode=none → nothing is shot down


Lennart Poettering                        Red Hat, Inc.
lennart [at] poettering [dot] net           GnuPG 0x1A015CC4

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