---
 multipath/mpathconf |   37 ++++++++++++++++++++++++++-----------
 1 file changed, 26 insertions(+), 11 deletions(-)

Index: multipath-tools-130222/multipath/mpathconf
===================================================================
--- multipath-tools-130222.orig/multipath/mpathconf
+++ multipath-tools-130222/multipath/mpathconf
@@ -42,6 +42,19 @@ function usage
 	echo ""
 }
 
+function add_wwid
+{
+	INDEX=0
+	while [ "$INDEX" -lt "$WWIDS" ] ; do
+		if [ "$1" = "${WWID_LIST[$INDEX]}" ] ; then
+			return
+		fi
+		((INDEX++))
+	done
+	WWID_LIST[$WWIDS]="$1"
+	((WWIDS++))
+}
+
 function get_dm_deps
 {
 	shift 3
@@ -59,11 +72,9 @@ function get_dm_deps
 function set_dm_wwid
 {
 	if [[ "$1" =~ ^part[[:digit:]]+-mpath- ]] ; then
-		WWID_LIST[$WWIDS]="${1##part*-mpath-}"
-		((WWIDS++))
+		add_wwid "${1##part*-mpath-}"
 	elif [[ "$1" =~ ^mpath- ]] ; then
-		WWID_LIST[$WWIDS]="${1##mpath-}"
-		((WWIDS++))
+		add_wwid "${1##mpath-}"
 	else
 		get_dm_deps `dmsetup deps -u $1`
 	fi
@@ -82,8 +93,7 @@ function set_wwid
 	if [ -n "$UUID" ] ; then
 		set_dm_wwid $UUID
 	else
-		WWID_LIST[$WWIDS]="$1"
-		((WWIDS++))
+		add_wwid "$1"
 	fi
 }
 
@@ -198,13 +208,13 @@ function validate_args
 
 function add_blacklist_exceptions
 {
-	echo "blacklist_exceptions {" >> $TMPFILE
 	INDEX=0
 	while [ "$INDEX" -lt "$WWIDS" ] ; do
-		echo "	wwid \"${WWID_LIST[$INDEX]}\"" >> $TMPFILE
+		sed -i '/^blacklist_exceptions[[:space:]]*{/ a\
+	wwid '"\"${WWID_LIST[$INDEX]}\""'
+' $TMPFILE
 		((INDEX++))
 	done
-	echo "}" >> $TMPFILE
 }
 
 umask 0077
@@ -350,9 +360,14 @@ if [ "$ENABLE" = 2 ]; then
 		sed -i '/^blacklist[[:space:]]*{/,/^}/ s/^[[:space:]]*#[[:space:]]*wwid \"\.\?\*\"/	wwid ".*"/' $TMPFILE
 	fi
 	if [ "$HAVE_EXCEPTIONS" = 1 ]; then
-		sed -i '/^blacklist_exceptions[[:space:]]*{/,/^}/d' $TMPFILE
+		sed -i '/^blacklist_exceptions[[:space:]]*{/,/^}/ {/^[[:space:]]*wwid/ d}' $TMPFILE
+	else
+		cat >> $TMPFILE <<- _EOF_
+
+blacklist_exceptions {
+}
+_EOF_
 	fi
-	echo $HAVE_WWID_DISABLE
 	add_blacklist_exceptions
 elif [ "$ENABLE" = 1 ]; then
 	if [ "$HAVE_DISABLE" = 1 ]; then