From 95de2056c00d874da10615b34dc94f9c27d61404 Mon Sep 17 00:00:00 2001
From: Ryan O'Hara <rohara@redhat.com>
Date: Mon, 28 Jul 2008 10:46:02 -0500
Subject: [PATCH] cman: add option to init script to prevent joining the fence
 domain

New sysconfig variable FENCE_JOIN will control whether or not the
node joins the fence domain. This variable can be set to either
value "yes" or "no". When FENCE_JOIN is set to "no", the init script
will not attempt to join the fence domain. Any other value is
equivalant to "yes", in which case the init script will attempt to
join the fence domain. (BZ #455598)
---
 cman/init.d/cman | 90 ++++++++++++++++++++++++++++++++++++------------
 1 file changed, 68 insertions(+), 22 deletions(-)

diff --git a/cman/init.d/cman b/cman/init.d/cman
index f489dd18..d3b12377 100644
--- a/cman/init.d/cman
+++ b/cman/init.d/cman
@@ -33,12 +33,11 @@
 #     startup quorum is needed by many other applications, so we may as 
 #     well wait here.  If CMAN_QUORUM_TIMEOUT is less than 1, quorum will 
 #     be ignored.
-#CMAN_QUORUM_TIMEOUT=300
 [ -z "$CMAN_QUORUM_TIMEOUT" ] && CMAN_QUORUM_TIMEOUT=0
 
 # CMAN_SHUTDOWN_TIMEOUT -- amount of time to wait for cman to become a 
 #     cluster member before calling cman_tool leave during shutdown.  
-#     default is 60 seconds
+#     The default is 60 seconds
 [ -z "$CMAN_SHUTDOWN_TIMEOUT" ] && CMAN_SHUTDOWN_TIMEOUT=60
 
 # FENCED_START_TIMEOUT -- amount of time to wait for starting fenced
@@ -58,6 +57,14 @@
 # higher elsewhere it will not be reduced here.
 [ -z "$NET_RMEM_MAX" ] && NET_RMEM_MAX=4194304
 
+# FENCE_JOIN -- boolean value used to control whether or not this node
+#     should join the fence domain. If FENCE_JOIN is set to "no", then
+#     the script will not attempt to the fence domain. If FENCE_JOIN is
+#     set to "yes", then the script will attempt to join the fence domain.
+#     If FENCE_JOIN is set to any other value, the default behavior is
+#     to join the fence domain (equivalent to "yes").
+[ -z "$FENCE_JOIN" ] && FENCE_JOIN="yes"
+
 [ -z "$LOCK_FILE" ] && LOCK_FILE="/var/lock/subsys/cman"
 
 [ -n "$CLUSTERNAME" ] && cman_join_opts="-c $CLUSTERNAME"
@@ -230,6 +237,14 @@ xend_bridged_net_start() {
 
 fence_xvmd_enabled()
 {
+    #
+    # Check the value of FENCE_JOIN.
+    # If FENCE_JOIN is set to "no", then we should disable fence_xvm.
+    #
+    if [ "$FENCE_JOIN" == "no" ]; then
+	return 1
+    fi
+
     #
     # Check for the 'xm' binary.  If it's not here, we are not
     # running on a machine capable of running xvmd.
@@ -272,6 +287,21 @@ set_networking_params()
     fi
 }
 
+fence_join_enabled()
+{
+    #
+    # Check the value of FENCE_JOIN.
+    # If FENCE_JOIN is set to "no", we will not attempt to join
+    # the fence domain. If FENCE_JOIN is set to any other value,
+    # we will attempt to join the fence domain (default).
+    #
+    if [ "$FENCE_JOIN" == "no" ]; then
+	return 1
+    else
+	return 0
+    fi
+}
+
 start()
 {
     echo "Starting cluster: "
@@ -289,6 +319,7 @@ start()
 			return 1
         fi
     fi
+
     echo -n "   Loading modules... "
     ulimit -c unlimited
     load_modules
@@ -299,6 +330,7 @@ start()
 	echo "failed"
 	return 1
     fi
+
     echo -n "   Mounting configfs... "
     start_configfs
     if [ $? -eq 0 ] 
@@ -308,6 +340,7 @@ start()
 	echo "failed"
 	return 1
     fi	
+
     echo -n "   Setting network parameters... "
     set_networking_params
     if [ $? -eq 0 ] 
@@ -317,6 +350,7 @@ start()
 	echo "failed"
 	return 1
     fi
+
     echo -n "   Starting ccsd... "
     start_ccsd
     if [ $? -eq 0 ] 
@@ -326,6 +360,7 @@ start()
 	echo "failed"
 	return 1
     fi
+
     echo -n "   Starting cman... "
     start_cman
     if [ $? -eq 0 ] 
@@ -347,16 +382,19 @@ start()
 	echo "failed"
 	return 1
     fi
-    echo -n "   Starting fencing... "
-    start_fence
-    if [ $? -eq 0 ] 
-    then
-	echo "done"
-    else
-	echo "failed"
-	return 1
+
+    if fence_join_enabled; then
+	echo -n "   Starting fencing... "
+	start_fence
+	if [ $? -eq 0 ] 
+	    then
+	    echo "done"
+	else
+	    echo "failed"
+	    return 1
+	fi
     fi
-    
+
     if fence_xvmd_enabled; then
 	echo -n "   Starting virtual machine fencing host... "
 	start_fence_xvmd
@@ -463,6 +501,7 @@ stop_fence_xvmd()
 stop()
 {
     echo "Stopping cluster: "
+
     if fence_xvmd_enabled; then
 	echo -n "   Stopping virtual machine fencing host... "
 	stop_fence_xvmd
@@ -473,16 +512,20 @@ stop()
 	    echo "failed"
 	    return 1
 	fi
-    fi        
-    echo -n "   Stopping fencing... "
-    stop_fence
-    if [ $? -eq 0 ]
-    then
-	echo "done"
-    else
-	echo "failed"
-	return 1
     fi
+
+    if fence_join_enabled; then
+	echo -n "   Stopping fencing... "
+	stop_fence
+	if [ $? -eq 0 ]
+	    then
+	    echo "done"
+	else
+	    echo "failed"
+	    return 1
+	fi
+    fi
+
     echo -n "   Stopping cman... "
     if [ $1 ]; then
 	stop_cman $1
@@ -496,8 +539,10 @@ stop()
 	echo "failed"
 	return 1
     fi
-#    stop_daemons
-#    [ $? -ne 0 ] && return 1
+
+#   stop_daemons
+#   [ $? -ne 0 ] && return 1
+
     echo -n "   Stopping ccsd... "
     stop_ccsd
     if [ $? -eq 0 ]
@@ -507,6 +552,7 @@ stop()
 	echo "failed"
 	return 1
     fi
+
     echo -n "   Unmounting configfs... "
     stop_configfs
     if [ $? -eq 0 ]
-- 
2.43.5