Merge branch 'devel-2.4'

* devel-2.4:
  node evac: don't call IAllocator if no instances
Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

lib/cmdlib.py

@@ -9738,10 +9738,13 @@ class LUNodeEvacStrategy(NoHooksLU):
       locks[locking.LEVEL_NODE] = self.op.nodes + [self.op.remote_node]
 
   def Exec(self, feedback_fn):
-    if self.op.remote_node is not None:
     instances = []
     for node in self.op.nodes:
       instances.extend(_GetNodeSecondaryInstances(self.cfg, node))
+    if not instances:
+      return []
+
+    if self.op.remote_node is not None:
       result = []
       for i in instances:
         if i.primary_node == self.op.remote_node: