code: def check_storage_controllers():
      
      if ctrl_flag:
          ctrl = walk_data(sess, oid_ctrl, helper)[0]
          for x, data in enumerate(ctrl, 1):
              ctrl_summary_output, ctrl_long_output = state_summary(data, 'Controller %d' % x, normal_state, helper)
              add_output(ctrl_summary_output, ctrl_long_output, helper)
docs: Check the status of the storage controllers
      Skip this check, if --noController is set