@disk_usage = !is_running ? [] : Watchdog.get_ve_counters_queue('_diskspace', @virtual_server.id).map do |counter|
      diskspace = counter[:held].to_i / (1024 * 1024)
      @disk_max = diskspace if diskspace > @disk_max
      { 'time' => counter[:created_at].min, 'usage' => diskspace }
    end