diff --git a/contrib/nova.sh b/contrib/nova.sh
index d7d34dcbda13..eab68058037c 100755
--- a/contrib/nova.sh
+++ b/contrib/nova.sh
@@ -17,7 +17,7 @@ if [ ! -n "$HOST_IP" ]; then
     HOST_IP=`LC_ALL=C ifconfig  | grep -m 1 'inet addr:'| cut -d: -f2 | awk '{print $1}'`
 fi
 
-USE_MYSQL=${USE_MYSQL:-0}
+USE_MYSQL=${USE_MYSQL:-1}
 INTERFACE=${INTERFACE:-eth0}
 FLOATING_RANGE=${FLOATING_RANGE:-10.6.0.0/27}
 FIXED_RANGE=${FIXED_RANGE:-10.0.0.0/24}
@@ -159,10 +159,6 @@ NOVA_CONF_EOF
     mkdir -p $NOVA_DIR/instances
     rm -rf $NOVA_DIR/networks
     mkdir -p $NOVA_DIR/networks
-    if [ ! -d "$NOVA_DIR/images" ]; then
-        ln -s $DIR/images $NOVA_DIR/images
-    fi
-
     if [ "$TEST" == 1 ]; then
         cd $NOVA_DIR
         python $NOVA_DIR/run_tests.py
@@ -181,8 +177,18 @@ NOVA_CONF_EOF
     # create some floating ips
     $NOVA_DIR/bin/nova-manage floating create `hostname` $FLOATING_RANGE
 
-    # convert old images
-    $NOVA_DIR/bin/nova-manage image convert $DIR/images
+    if [ ! -d "$NOVA_DIR/images" ]; then
+        if [ ! -d "$DIR/converted-images" ]; then
+            # convert old images
+            mkdir $DIR/converted-images
+            ln -s $DIR/converted-images $NOVA_DIR/images
+            $NOVA_DIR/bin/nova-manage image convert $DIR/images
+        else
+            ln -s $DIR/converted-images $NOVA_DIR/images
+        fi
+
+    fi
+
 
     # nova api crashes if we start it with a regular screen command,
     # so send the start command by forcing text into the window.
diff --git a/tools/clean-vlans b/tools/clean-vlans
index 820a9dbe5b0e..a26ad86ada5f 100755
--- a/tools/clean-vlans
+++ b/tools/clean-vlans
@@ -17,9 +17,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-export LC_ALL=C 
+export LC_ALL=C
 
 sudo ifconfig -a | grep br | grep -v bridge | cut -f1 -d" " | xargs -n1 -ifoo ifconfig foo down
 sudo ifconfig -a | grep br | grep -v bridge | cut -f1 -d" " | xargs -n1 -ifoo brctl delbr foo
-sudo ifconfig -a | grep vlan | grep -v vlan124 | grep -v vlan5 | cut -f1 -d" " | xargs -n1 -ifoo ifconfig foo down
-sudo ifconfig -a | grep vlan | grep -v vlan124 | grep -v vlan5 | cut -f1 -d" " | xargs -n1 -ifoo vconfig rem foo
+sudo ifconfig -a | grep vlan | cut -f1 -d" " | xargs -n1 -ifoo ifconfig foo down
+sudo ifconfig -a | grep vlan | cut -f1 -d" " | xargs -n1 -ifoo vconfig rem foo
diff --git a/tools/nova-debug b/tools/nova-debug
index 3ff68ca35606..0a78af16a067 100755
--- a/tools/nova-debug
+++ b/tools/nova-debug
@@ -30,13 +30,15 @@ cd $INSTANCES_PATH/$1
 if [ $CMD != "umount" ] && [ $CMD != "launch" ]; then
 # destroy the instance
 virsh destroy $1
+virsh undefine $1
 
 # mount the filesystem
 mkdir t
-DEVICE=`losetup --show -f disk`
+DEVICE=/dev/nbd0
 echo $DEVICE
-kpartx -a $DEVICE
-mount /dev/mapper/${DEVICE:4}p1 t
+qemu-nbd -c $DEVICE disk
+sleep 3
+mount $DEVICE t
 
 fi
 if [ $CMD != "mount" ] &&  [ $CMD != "umount" ]; then
@@ -66,11 +68,13 @@ sed -i "s/<serial type=\"file\">.*<\/serial>/<serial type=\"pty\"><source path=\
 
 umount t
 
-virsh create debug.xml
+virsh define debug.xml
+virsh start $1
 virsh console $1
 virsh destroy $1
+virsh undefine $1
 
-mount /dev/mapper/${DEVICE:4}p1 t
+mount $DEVICE t
 
 # clear debug root password
 chroot t passwd -l root
@@ -83,10 +87,11 @@ if [ $CMD != "mount" ] && [ $CMD != "launch" ]; then
 
 # unmount the filesystem
 umount t
-kpartx -d $DEVICE
-losetup -d $DEVICE
+qemu-nbd -d $DEVICE
 rmdir t
 
 # recreate the instance
-virsh create libvirt.xml
+virsh define libvirt.xml
+virsh start $1
 fi
+