xenserver: reload sends SIGHUP to monitor-external-ids

When the init script's reload function is called it will send a
SIGHUP to monitor-external-ids.  This will cause
monitor-external-ids to re-generate everything.

Feature #3668.

diff --git a/xenserver/etc_init.d_openvswitch b/xenserver/etc_init.d_openvswitch
index 68079fc..2827653 100755 (executable)
--- a/xenserver/etc_init.d_openvswitch
+++ b/xenserver/etc_init.d_openvswitch
@@ -117,6 +117,12 @@ else
     monitor_opt=
 fi
 
+function hup_monitor_external_ids {
+    if [ -e /var/run/openvswitch/monitor-external-ids.pid ]; then
+        action "Configuring Open vSwitch external IDs" kill -HUP `cat /var/run/openvswitch/monitor-external-ids.pid`
+    fi
+}
+
 function dp_list {
     "$dpctl" show | grep '^dp[0-9]\+:' | cut -d':' -f 1
 }
@@ -380,8 +386,10 @@ case "$1" in
         restart
         ;;
     reload|force-reload)
-       # Nothing to do--ovs-vswitchd and ovsdb-server keep their configuration
-       # up-to-date all the time.
+        # Nothing to do to ovs-vswitchd and ovsdb-server as they keep their
+        # configuration up-to-date all the time.  HUP monitor-external-ids so it
+        # re-runs.
+        hup_monitor_external_ids
        ;;
     strace-vswitchd)
         shift