code: def get_md_status(self, line):
          
          ret = {}
  
          splitted = split('\W+', line)
          if len(splitted) < 7:
              ret['available'] = None
              ret['used'] = None
              ret['config'] = None
          else:
              # The final 2 entries on this line: [n/m] [UUUU_]
              # [n/m] means that ideally the array would have n devices however, currently, m devices are in use.
              # Obviously when m >= n then things are good.
              ret['available'] = splitted[-4]
              ret['used'] = splitted[-3]
              # [UUUU_] represents the status of each device, either U for up or _ for down.
              ret['config'] = splitted[-2]
  
          return ret
docs: Return a dict of md status define in the line.