fixing error

xtreemfs_client/div_util.py

@@ -44,11 +44,11 @@ def run_commands(commands, max_processes=200):
             difference = set()
             for running_process in running_processes:
                 if running_process.poll() is not None:
-                    difference.add((running_process.args,
+                    difference.add(running_process)
+                    finished_processes.append((running_process.args,
                                                running_process.communicate(),
                                                running_process.returncode))
             running_processes = running_processes.difference(difference)
-            
 
     for p in running_processes:
         p.wait()
@@ -58,7 +58,8 @@ def run_commands(commands, max_processes=200):
                                    finished_process.communicate(),
                                    finished_process.returncode))
 
-    return list(map(lambda proc: (proc.args, proc.communicate(), proc.returncode), all_processes))
+    return finished_processes
+    # return list(map(lambda proc: (proc.args, proc.communicate(), proc.returncode), all_processes))
 
 
 def print_process_list(processes):