virt-xml: If no XML diff is generated, explicitly warn

1 files changed, 4 insertions, 0 deletions

diff --git a/virt-xml b/virt-xml
index 6487aa7c..5a7b40ba 100755
--- a/virt-xml
+++ b/virt-xml
@@ -333,6 +333,10 @@ def prepare_changes(xmlobj, options, parserclass):
     newxml = xmlobj.get_xml()
     diff = get_diff(origxml, newxml)
 
+    if not diff:
+        logging.warning(_("No XML diff was generated. The requested "
+            "changes will have no effect."))
+
     if options.print_diff:
         if diff:
             print_stdout(diff)