xenserver: make ovs-xenserverd startup configurable and disable it for 5.6.0 onwards.

In my testing with XenServer 5.6.810 without ovs-xenserverd the
vswitch bridge external-id network-uuid field was always kept up to
date over both pool join and pool eject. I believe this is because
xapi is restarted on both pool join and pool eject and on restart all
PIFs are plugged again. This causes the vswitch field to be updated,
either via a call to interface reconfigure or via an explicit
ovs-vsctl call in the case of internal networks.

I think the only reason this daemon would still be required with
XenServer 5.5 is that the explicit call to ovs-vsctl for internl
networks is not present there.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/xenserver/etc_init.d_openvswitch b/xenserver/etc_init.d_openvswitch
index c6cc66b..ce75480 100755 (executable)
--- a/xenserver/etc_init.d_openvswitch
+++ b/xenserver/etc_init.d_openvswitch
@@ -35,10 +35,12 @@ if test "$PRODUCT_VERSION" = "5.5.0"; then
     # XenServer 5.5.0 needs ovs-brcompatd and /proc/net simulation.
     : ${ENABLE_BRCOMPAT:=y}
     : ${ENABLE_FAKE_PROC_NET:=y}
+    : ${ENABLE_XENSERVERD:=y}
 else
     # Later versions don't need them.
     : ${ENABLE_BRCOMPAT:=n}
     : ${ENABLE_FAKE_PROC_NET:=n}
+    : ${ENABLE_XENSERVERD:=n}
 fi
 : ${ENABLE_MONITOR:=y}
 : ${FORCE_COREFILES:=y}
@@ -343,7 +345,9 @@ function start {
     if [ "${ENABLE_BRCOMPAT}" = "y" ] ; then
         start_brcompatd
     fi
-    start_xenserverd
+    if [ "${ENABLE_XENSERVERD}" = "y" ] ; then
+        start_xenserverd
+    fi
     touch /var/lock/subsys/openvswitch
 }
 
@@ -385,7 +389,8 @@ case "$1" in
         status -p "$VSWITCHD_PIDFILE" ovs-vswitchd &&
         (test "$ENABLE_BRCOMPAT" != "y" || 
             status -p "$BRCOMPATD_PIDFILE" ovs-brcompatd) &&
-        status -p "$XENSERVERD_PIDFILE" ovs-xenserverd
+        (test "$ENABLE_XENSERVERD" != "y" ||
+            status -p "$XENSERVERD_PIDFILE" ovs-xenserverd)
         ;;
     version)
         /usr/sbin/ovsdb-server -V

diff --git a/xenserver/usr_share_openvswitch_scripts_sysconfig.template b/xenserver/usr_share_openvswitch_scripts_sysconfig.template
index 6492931..e58dfce 100644 (file)
--- a/xenserver/usr_share_openvswitch_scripts_sysconfig.template
+++ b/xenserver/usr_share_openvswitch_scripts_sysconfig.template
@@ -21,6 +21,11 @@
 #    and not required and not enabled by default for later versions.
 # ENABLE_FAKE_PROC_NET=?
 
+# ENABLE_XENSERVERD: If 'y' then monitor system for changes in pool membership
+#    This is required and enabled by default for XenServer 5.5.0,
+#    and not required and not enabled by default for later versions.
+# ENABLE_XENSERVERD=?
+
 # ENABLE_MONITOR: If 'y' then monitor daemon processes and restart them
 #    if they die due to an error signal.
 # ENABLE_MONITOR=y