Use just IMAGE_PREFIX, not IMAGE_PREFIX+"one"

opennebula/remotes/datastore/vitastor/mkfs

@@ -38,7 +38,6 @@ done < <($XPATH \
     /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/BRIDGE_LIST \
     /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/POOL_NAME \
     /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/IMAGE_PREFIX \
-    /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/STAGING_DIR \
     /DS_DRIVER_ACTION_DATA/IMAGE/FORMAT \
     /DS_DRIVER_ACTION_DATA/IMAGE/SIZE \
     /DS_DRIVER_ACTION_DATA/IMAGE/FS \
@@ -51,8 +50,7 @@ RESTRICTED_DIRS="${XPATH_ELEMENTS[i++]}"
 SAFE_DIRS="${XPATH_ELEMENTS[i++]}"
 BRIDGE_LIST="${XPATH_ELEMENTS[i++]}"
 POOL_NAME="${XPATH_ELEMENTS[i++]}"
-IMAGE_PREFIX="${XPATH_ELEMENTS[i++]}"
-STAGING_DIR="${XPATH_ELEMENTS[i++]:-$STAGING_DIR}"
+IMAGE_PREFIX="${XPATH_ELEMENTS[i++]:-one}"
 FORMAT="${XPATH_ELEMENTS[i++]}"
 SIZE="${XPATH_ELEMENTS[i++]}"
 FS="${XPATH_ELEMENTS[i++]}"
@@ -75,7 +73,7 @@ fi
 
 set_up_datastore "$BASE_PATH" "$RESTRICTED_DIRS" "$SAFE_DIRS"
 
-IMAGE_NAME="${IMAGE_PREFIX}one-${ID}"
+IMAGE_NAME="${IMAGE_PREFIX}-${ID}"
 
 # ------------ Image to save_as disk, no need to create a new image ------------
 
@@ -109,7 +107,6 @@ if [ ! -z $FS ]; then
     set -e -o pipefail
 
     IMAGE_HASH=`generate_image_hash`
-    TMP_DST="$STAGING_DIR/$IMAGE_HASH"
     FS_OPTS=$(eval $(echo "echo \$FS_OPTS_$FS"))
 
     MKFS_CMD=`mkfs_command '$NBD' raw "$SIZE" "$SUPPORTED_FS" "$FS" "$FS_OPTS" | grep -v $QEMU_IMG`