@@ -546,9 +546,9 @@ if [[ "$ENABLED_SERVICES" =~ "n-vol" ]]; then

     #

     # By default, the backing file is 2G in size, and is stored in /opt/stack.

     #

-    VOLUME_BACKING_FILE=${VOLUME_BACKING_FILE:-/opt/stack/nova-volumes-backing-file}

-    VOLUME_BACKING_FILE_SIZE=${VOLUME_BACKING_FILE_SIZE:-2052M}

     if ! sudo vgdisplay | grep -q nova-volumes; then

+        VOLUME_BACKING_FILE=${VOLUME_BACKING_FILE:-/opt/stack/nova-volumes-backing-file}

+        VOLUME_BACKING_FILE_SIZE=${VOLUME_BACKING_FILE_SIZE:-2052M}

         truncate -s $VOLUME_BACKING_FILE_SIZE $VOLUME_BACKING_FILE

         DEV=`sudo losetup -f --show $VOLUME_BACKING_FILE`

         sudo vgcreate nova-volumes $DEV

@@ -38,7 +38,7 @@ DEST=${DEST:-/opt/stack}

 WAIT_TILL_LAUNCH=${WAIT_TILL_LAUNCH:-1}

 # Param string to pass to stack.sh.  Like "EC2_DMZ_HOST=192.168.1.1 MYSQL_USER=nova"

-# By default, n-vol is disabled for lxc

+# By default, n-vol is disabled for lxc, as iscsitarget doesn't work properly in lxc

 STACKSH_PARAMS=${STACKSH_PARAMS:-"ENABLED_SERVICES=g-api,g-reg,key,n-api,n-cpu,n-net,n-sch,n-vnc,dash,mysql,rabbit"}

 # Option to use the version of devstack on which we are currently working