On Mon, 11.08.14 13:41, Markus Weißmann ([email protected]) wrote:
Hi! > I've got an embedded system which can run in two configurations; > configuration 1 will run daemon A, B and C > configuration 2 will run daemon A and D > The configuration is chosen at boot-time with a hardware switch. The > position of this switch is accessible with a userland tool (via > serial interface). My recommendation would be to define two distinct target units for your two modes, and then write a small "generator" tool that checks the switch, and then creates a symlink /etc/systemd/system/default.target that points to the appropriate target for the mode. http://www.freedesktop.org/wiki/Software/systemd/Generators/ Note that this will only work if the serial port is on-board (and not usb or so) and hence available without restrictions already at the time the generators run. > Bonus question: Will the ConditionPathExists be checked only once > and if so when exactly? And does this interfere with setting > Restart=always? (will it be re-evaluated if the daemon needs to be > restarted, only once, ..?) conditions are checked immediately before we'd normally start the first service process for each service. Lennart -- Lennart Poettering, Red Hat _______________________________________________ systemd-devel mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/systemd-devel
