Flexvolume: Add support for multiple secrets

examples/flexvolume/lvm

@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# Notes:
+#  - Please install "jq" package before using this driver.
 usage() {
 	err "Invalid usage. Usage: "
 	err "\t$0 init"
@@ -46,6 +48,10 @@ attach() {
 	SIZE=$(echo $1 | jq -r '.size')
 	VG=$(echo $1|jq -r '.volumegroup')
 
+	# LVM substitutes - with --
+	VOLUMEID= `echo $VOLUMEID|sed s/-/--/g`
+	VG=`echo $VG|sed s/-/--/g`
+
 	DMDEV="/dev/mapper/${VG}-${VOLUMEID}"
 	if [ ! -b "${DMDEV}" ]; then
 		err "{\"status\": \"Failure\", \"message\": \"Volume ${VOLUMEID} does not exist\"}"
@@ -77,7 +83,7 @@ domount() {
 
 	VOLFSTYPE=`blkid -o udev ${DMDEV} 2>/dev/null|grep "ID_FS_TYPE"|cut -d"=" -f2`
 	if [ "${VOLFSTYPE}" == "" ]; then
-		mkfs -t ${FSTYPE} ${DMDEV}
+		mkfs -t ${FSTYPE} ${DMDEV} >/dev/null 2>&1
 		if [ $? -ne 0 ]; then
 			err "{ \"status\": \"Failure\", \"message\": \"Failed to create fs ${FSTYPE} on device ${DMDEV}\"}"
 			exit 1