ovirt-img: upload consider sparse to measure

Measure is only required for qcow2 sparse images
to block storage. Currently we only consider the
format, but we can also consider sparse
attribute before measuring the image to avoid
unnecessary measures.

Signed-off-by: Albert Esteve <[email protected]>

ovirt_imageio/client/_upload.py

@@ -132,7 +132,7 @@ def _prepare(args):
         sparse = args.sparse
 
     initial_size = None
-    if disk_format == FORMAT_QCOW2:
+    if disk_format == FORMAT_QCOW2 and sparse:
         initial_size = _api.measure(args.filename, disk_format)["required"]
 
     name = args.name