Suggestion to avoid a lot of bamfdaemon failure messages during shutdown

Hi all, during the shutdown, using systemctl poweroff (or poweroff which is a link to systemctl) the X server is stopped before bamfdaemon.service. As bamfdaemon service uses Restart=on-failure the following happens:

-- Reboot --
mars 28 09:33:14 blackhole systemd[1024]: Starting BAMF Application Matcher Framework...
mars 28 09:33:14 blackhole systemd[1024]: Started BAMF Application Matcher Framework.
mars 29 18:07:53 blackhole bamfdaemon[1492]: bamfdaemon: Fatal IO error 11 (Ressource temporairement non disponible) on X server :0.
mars 29 18:07:53 blackhole systemd[1024]: bamfdaemon.service: Main process exited, code=exited, status=1/FAILURE
mars 29 18:07:53 blackhole systemd[1024]: bamfdaemon.service: Failed with result 'exit-code'.
mars 29 18:07:53 blackhole systemd[1024]: bamfdaemon.service: Scheduled restart job, restart counter is at 1.
mars 29 18:07:53 blackhole systemd[1024]: Stopped BAMF Application Matcher Framework.
mars 29 18:07:53 blackhole systemd[1024]: Starting BAMF Application Matcher Framework...
mars 29 18:07:54 blackhole bamfdaemon[146009]: Unable to init server: Impossible de se connecter : Connexion refusée
mars 29 18:07:54 blackhole bamfdaemon[146009]: cannot open display: :0
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Main process exited, code=exited, status=1/FAILURE
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Failed with result 'exit-code'.
mars 29 18:07:54 blackhole systemd[1024]: Failed to start BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Scheduled restart job, restart counter is at 2.
mars 29 18:07:54 blackhole systemd[1024]: Stopped BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: Starting BAMF Application Matcher Framework...
mars 29 18:07:54 blackhole bamfdaemon[146040]: Unable to init server: Impossible de se connecter : Connexion refusée
mars 29 18:07:54 blackhole bamfdaemon[146040]: cannot open display: :0
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Main process exited, code=exited, status=1/FAILURE
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Failed with result 'exit-code'.
mars 29 18:07:54 blackhole systemd[1024]: Failed to start BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Scheduled restart job, restart counter is at 3.
mars 29 18:07:54 blackhole systemd[1024]: Stopped BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: Starting BAMF Application Matcher Framework...
mars 29 18:07:54 blackhole bamfdaemon[146043]: Unable to init server: Impossible de se connecter : Connexion refusée
mars 29 18:07:54 blackhole bamfdaemon[146043]: cannot open display: :0
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Main process exited, code=exited, status=1/FAILURE
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Failed with result 'exit-code'.
mars 29 18:07:54 blackhole systemd[1024]: Failed to start BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Scheduled restart job, restart counter is at 4.
mars 29 18:07:54 blackhole systemd[1024]: Stopped BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: Starting BAMF Application Matcher Framework...
mars 29 18:07:54 blackhole bamfdaemon[146044]: Unable to init server: Impossible de se connecter : Connexion refusée
mars 29 18:07:54 blackhole bamfdaemon[146044]: cannot open display: :0
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Main process exited, code=exited, status=1/FAILURE
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Failed with result 'exit-code'.
mars 29 18:07:54 blackhole systemd[1024]: Failed to start BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Scheduled restart job, restart counter is at 5.
mars 29 18:07:54 blackhole systemd[1024]: Stopped BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: Starting BAMF Application Matcher Framework...
mars 29 18:07:54 blackhole bamfdaemon[146045]: Unable to init server: Impossible de se connecter : Connexion refusée
mars 29 18:07:54 blackhole bamfdaemon[146045]: cannot open display: :0
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Main process exited, code=exited, status=1/FAILURE
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Failed with result 'exit-code'.
mars 29 18:07:54 blackhole systemd[1024]: Failed to start BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Scheduled restart job, restart counter is at 6.
mars 29 18:07:54 blackhole systemd[1024]: Stopped BAMF Application Matcher Framework.
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Start request repeated too quickly.
mars 29 18:07:54 blackhole systemd[1024]: bamfdaemon.service: Failed with result 'exit-code'.
mars 29 18:07:54 blackhole systemd[1024]: Failed to start BAMF Application Matcher Framework.

In order to avoid that many restart attempts which will never be successful I suggest using RestartSec=Xs with X to be defined provided it's no trouble to wait a few seconds before each restart attempt in any possible use case i.e. not only at shutdown. Otherwise the default delay is 100ms. Another solution would be making this unit a dependency of some other unit in order to make it stop before X server become unreachable. Obviously that would be the cleanest option but I do not know enough of systemd to make a relevant proposal.

Regards,