[Unit]
Description=MARS TESTING dummy process running on /mnt/test/@{res}
Documentation=https://github.com/schoebel/mars/docu/mars-user-manual.pdf

## Markers for the template processor
# TESTING_START

## Prohibit parallelism with any daemon-reload
After=daemon-reload.service

## HINT: in addition to the combination of BindsTo= with After= as
## documented in "man systemd.unit" to get an _ordering_ dependency for
## startup, it looks like we also need PartOf= to get _another_ ordering
## dependency for _stopping_ in the right order.
## The docs were not particularly clear about this, I found this by testing.

## Comment / uncomment the following, depending on test behaviour:

## This version uses an intermediate "delay" service for testing.
## Notice: the pathname part of the delay service is generated by
## pattern matching from ^{mnt} . Look at the generated units.
## This setup also tests transitive systemd dependencies, where
## BindsTo+After+PartOf is crucial for starting and stopping any
## intermediate units in the right order.
#BindsTo=mnt-test-@escvar{res}-delay.service
#After=mnt-test-@escvar{res}-delay.service
#PartOf=mnt-test-@escvar{res}-delay.service

## Direct version without delay. Use in place of the delay service.
BindsTo=mnt-test-@escvar{res}.mount
After=mnt-test-@escvar{res}.mount
PartOf=mnt-test-@escvar{res}.mount

ConditionPathIsMountPoint=/mnt/test/@{res}

[Service]
Type=simple
ExecStart=/etc/marsadm/systemd-templates/SYSTEMD-load-occupy.sh /mnt/test/@{res}
ExecStop=/etc/marsadm/systemd-templates/SYSTEMD-load-stop.sh /mnt/test/@{res}
# Important for avoiding failures: do not send any signals
KillMode=none

## Following is an alternative which does not work due to races.
## Only enable this if you want to trigger such problems for testing.
#ExecStop=/usr/bin/killall -r MARS-load
#KillMode=mixed

[Install]
WantedBy=mars.service