docs: def offline(name, path):
      '''
      Mark a cache storage device as offline. The storage is identified by a path
      which must match exactly a path specified in storage.config. This removes
      the storage from the cache and redirects requests that would have used this
      storage to other storage. This has exactly the same effect as a disk
      failure for that storage. This does not persist across restarts of the
      traffic_server process.
  
      .. code-block:: yaml
  
          offline_ats_path:
            trafficserver.offline:
              - path: /path/to/cache
      '''
      ret = {'name': name,
             'changes': {},
             'result': None,
             'comment': ''}
  
      if __opts__['test']:
          ret['comment'] = 'Setting {0} to offline'.format(path)
          return ret
  
      __salt__['trafficserver.offline'](path)
  
      ret['result'] = True
      ret['comment'] = 'Set {0} as offline'.format(path)
      return ret