Fix: systemd: make corosync wait for sbd-start to complete

If sbd fails to start it prevents pacemaker from starting, but corosync
continues to start without errors. This generates a quorum vote for the
current node although the sbd and pacemaker components are not alive.

Author: Valentin Vidic

src/sbd.service.in

@@ -1,6 +1,7 @@
 [Unit]
 Description=Shared-storage based fencing daemon
 Documentation=man:sbd(8)
+Before=corosync.service
 Before=pacemaker.service
 Before=dlm.service
 After=systemd-modules-load.service iscsi.service