docs: def percent(args=None):
      '''
      Return partition information for volumes mounted on this minion
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' disk.percent /var
      '''
      if __grains__['kernel'] == 'Linux':
          cmd = 'df -P'
      elif __grains__['kernel'] == 'OpenBSD' or __grains__['kernel'] == 'AIX':
          cmd = 'df -kP'
      else:
          cmd = 'df'
      ret = {}
      out = __salt__['cmd.run'](cmd, python_shell=False).splitlines()
      for line in out:
          if not line:
              continue
          if line.startswith('Filesystem'):
              continue
          comps = line.split()
          while len(comps) >= 2 and not comps[1].isdigit():
              comps[0] = '{0} {1}'.format(comps[0], comps[1])
              comps.pop(1)
          if len(comps) < 2:
              continue
          try:
              if __grains__['kernel'] == 'Darwin':
                  ret[comps[8]] = comps[4]
              else:
                  ret[comps[5]] = comps[4]
          except IndexError:
              log.error('Problem parsing disk usage information')
              ret = {}
      if args and args not in ret:
          log.error(
              'Problem parsing disk usage information: Partition \'%s\' '
              'does not exist!', args
          )
          ret = {}
      elif args:
          return ret[args]
  
      return ret