On Tue, 08.07.14 13:00, Mario Schuknecht (mario.schukne...@dresearch-fe.de) wrote:
> I have the following problem: > There are 3 (or more) systemd targets. Each of the three targets starts a > number of systemd services. > It can be switched back and forth between the systemd targets. > > As a limitation, it is necessary that the services of a target start only > if the services of actual target are already stopped. Because there have > resources to be released, such as a serial port. > > The problem is solved with Unit paramter Conflicts. Starting a target will > stop the other. I figure your colleague already asked the same question. But long story short: you cannot solve this purely by ordereing only the targets. You need Conflicts= and After= (or Before=) between the actual service units that shall be exclusive to each other. More specifically, if you have two units accessing the same serial port, then they should have Conflicts= as well as After= (or Before=). Also see other mail for the more theoretic background of this. Lennart -- Lennart Poettering, Red Hat _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
