opticsmon: zpcimon: Rename opticsmon to zpcimon

The opticsmon tool started out as a tool for monitoring the health of
optical modules in directly attached PCI NICs. In the future however it
will also monitor the health of other PCI devices. In particular in
a first step it will monitor the health of directly attached NVMe
devices.

To reflect this broadening of its scope rename opticsmon to zpcimon. Add
zpcimon.service and install it both under the new name and symlinked as
opticsmon.service for backwards compatibility. Since users are expected
to mostly just enable the service this keeps old instructions just
working.

Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

systemd/Makefile

@@ -4,7 +4,7 @@ SYSTEM_UNITS = ttyrun-getty@.service iucvtty-login@.service \
                cpacfstatsd.service cpuplugd.service \
                dumpconf.service cpi.service \
                mon_fsstatd.service mon_procd.service \
-               opticsmon.service
+               zpcimon.service
 
 all:
 
@@ -19,6 +19,9 @@ install: system_units
 	  $(INSTALL) -g $(GROUP) -o $(OWNER) \
 	             -m 644 $$unit $(DESTDIR)$(SYSTEMDSYSTEMUNITDIR) ; \
 	done
+	# Make the legacy opticsmon.service a link to zpcimon.service
+	ln -sf zpcimon.service \
+		$(DESTDIR)$(SYSTEMDSYSTEMUNITDIR)/opticsmon.service
 
 else
 

systemd/zpcimon.service.in

@@ -1,5 +1,5 @@
 #
-# Systemd unit for mon_fsstatd (monitor z/VM guest file systems)
+# Systemd unit for zpcimon PCI NIC optical module monitoring
 #
 # Copyright IBM Corp. 2024
 #
@@ -9,11 +9,11 @@
 
 [Unit]
 Description=Monitor health of directly attached PCI NIC optical modules
-# Documentation=man:opticsmon
+# Documentation=man:zpcimon
 
 [Service]
 Type=exec
-ExecStart=@usrsbin_path@/opticsmon --send-report --monitor --interval 86400
+ExecStart=@usrsbin_path@/zpcimon --send-report --monitor --interval 86400
 KillMode=control-group
 
 [Install]