prealloc.diff

diff --git a/src/datastore_mad/remotes/fs/mkfs b/src/datastore_mad/remotes/fs/mkfs
index afdd851..7f7842f 100755
--- a/src/datastore_mad/remotes/fs/mkfs
+++ b/src/datastore_mad/remotes/fs/mkfs
@@ -49,7 +49,8 @@ done < <($XPATH     /DS_DRIVER_ACTION_DATA/DATASTORE/BASE_PATH \
                     /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/RESTRICTED_DIRS \
                     /DS_DRIVER_ACTION_DATA/DATASTORE/TEMPLATE/SAFE_DIRS \
                     /DS_DRIVER_ACTION_DATA/IMAGE/FSTYPE \
-                    /DS_DRIVER_ACTION_DATA/IMAGE/SIZE)
+                    /DS_DRIVER_ACTION_DATA/IMAGE/SIZE \
+                    /DS_DRIVER_ACTION_DATA/IMAGE/TEMPLATE/QCOW_PREALLOC)
 
 
 BASE_PATH="${XPATH_ELEMENTS[0]}"
@@ -57,6 +58,7 @@ RESTRICTED_DIRS="${XPATH_ELEMENTS[1]}"
 SAFE_DIRS="${XPATH_ELEMENTS[2]}"
 FSTYPE="${XPATH_ELEMENTS[3]}"
 SIZE="${XPATH_ELEMENTS[4]}"
+QCOW_PREALLOC="${XPATH_ELEMENTS[5]}"
 
 mkdir -p "$BASE_PATH"
 set_up_datastore "$BASE_PATH" "$RESTRICTED_DIRS" "$SAFE_DIRS"
@@ -72,11 +74,12 @@ fi
 
 # ------------ Create the image to the repository ------------
 
-MKFS_CMD=`mkfs_command $DST $FSTYPE $SIZE`
-
-exec_and_log "$DD if=/dev/zero of=$DST bs=1 count=1 seek=${SIZE}M" \
-    "Could not create image $DST"
-exec_and_log "$MKFS_CMD" \
-    "Unable to create filesystem $FSTYPE in $DST"
+if [ "$QCOW_PREALLOC" = "YES" ]; then
+    exec_and_log "... the qemu command ..." \
+        "Could not create image $DST"
+else
+    exec_and_log "$MKFS_CMD" \
+        "Unable to create filesystem $FSTYPE in $DST"
+fi
 
 echo "$DST"