Hi How do I start a service on shutdown that will start and finish before any of the mount points being unmounted?
As it is explained here ( http://lists.freedesktop.org/archives/systemd-devel/2012-November/007558.html) the shutdown order is the reverse of startup order though it is not clear what is happening when a service that is not in the startup sequence is being started. Following is a sample unit file I have been working on. [Unit] Description=Taking Long Time DefaultDependencies=no Before=shutdown.target [Service] Type=oneshot ExecStart=/bin/sleep 60 [Install] WantedBy=shutdown.target Before=shutdown.target ensures that shutdown.target is not reached before the service is finished since it's type is "oneshot". But if I add "Before=umount.target" or "Before=basic.target" to the service file, the requested shutdown order is not obeyed. Output snipped: [OK] Stopped target Local File Systems Unmounting /usr/local... Unmounting /lib/persistent... Starting Taking Long Time [OK] Unmounted /usr/local [OK] Unmounted /lib/persistent What am I trying to achieve: I would like to start a service on shutdown/restart. This service accesses (read/write) to the file systems and for that reason I don't want any of the file systems unmounted by systemd before the service completes. Thank you, Umut
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