lib/virtualbox/vm.rb in virtualbox-0.5.1 vs lib/virtualbox/vm.rb in virtualbox-0.5.2

@@ -327,24 +327,27 @@
 
     # Saves the virtual machine if modified. This method saves any modified
     # attributes of the virtual machine. If any related attributes were saved
     # as well (such as storage controllers), those will be saved, too.
     def save(raise_errors=false)
-      # First save all the changed attributes in a single batch
-      saves = changes.inject([]) do |acc, kv|
-        key, values = kv
-        acc << ["--#{key}", values[1]]
-      end
+      if changed?
+        # First save all the changed attributes in a single batch
+        saves = changes.inject([]) do |acc, kv|
+          key, values = kv
+          acc << ["--#{key}", values[1]]
+        end
 
-      # Flatten to pass into vboxmanage
-      saves.flatten!
+        # Flatten to pass into vboxmanage
+        saves.flatten!
 
-      # Save all the attributes in one command
-      Command.vboxmanage("modifyvm", @original_name, *saves)
+        # Save all the attributes in one command
+        Command.vboxmanage("modifyvm", @original_name, *saves)
 
-      # Now clear attributes and call super so relationships are saved
-      @original_name = name
-      clear_dirty!
+        # Now clear attributes and call super so relationships are saved
+        @original_name = name
+        clear_dirty!
+      end
+
       super()
 
       # Force reload
       Global.reload!
 
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