units: Add "GuessMainPID=no" to compatibility unit for rc-local (#3018)

With the current "Type=forking", systemd tries to guess the PID it
should wait on at reboot (because we have no "PIDFile="). Depending on
how wrong the guess is, we can end up hanging forever at reboot.

Asking it not to do that eliminates the problem.

diff --git a/units/rc-local.service.in b/units/rc-local.service.in
index d4db1747ed1eece7fb7ebb35ec970ec0bafd06f4..480dddbe37620acc3be51c9597837926fbbebba0 100644 (file)
--- a/units/rc-local.service.in
+++ b/units/rc-local.service.in
@@ -17,3 +17,4 @@ Type=forking
 ExecStart=@RC_LOCAL_SCRIPT_PATH_START@ start
 TimeoutSec=0
 RemainAfterExit=yes
+GuessMainPID=no