[systemd-devel] Synchronization Between Services at Shutdown

[Michael Biebl]

2015-04-02 13:03 GMT+02:00 Lennart Poettering <lennart at poettering.net>:
> On Thu, 02.04.15 13:00, Michael Biebl (mbiebl at gmail.com) wrote:
>
>> 2015-04-02 11:06 GMT+02:00 Lennart Poettering <lennart at poettering.net>:
>> > If you want to ensure that bus communication still works in your
>> > shutdown code, you hence need to make sure you place
>> > After=dbus.service in your services, so that you are shut down before
>> > dbus is.
>>
>> Type=dbus service currently only get a dependency on dbus.socket (via
>> After=basic.target).
>
> Yeah, and rightfully so. I mean, a service really should be able to
> shutdown if dbus is dead. In fact, it should be able to shutdown in
> pretty much any situation...

Apparently they don't. There were all sorts of failures caused by dbus
being shut down too early.

https://bugs.launchpad.net/ubuntu/+source/dbus/+bug/1438612 is one of
the related bug reports afair.

Since Martin has been working on this, I'll let him comment on this.
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