Cudy WR3000 monitor data consumption

Installing and Using OpenWrt
1

Hi everyone, I'm new on using OpenWrt, I choose this system as I think it can monitor the internet usage. I want to know hom many giga I use every mouth.

I tried vnstat and nlbwmon, they work well, but each time the router is rebooting, datas are cleared. Can anyone help me to fix this?

BTW, there is no usb port for external data storage
Sorry for my bad english

2

You just answered your own question.

1 Like
3

But I'd like to know if it works if it stored in the router's storage, and how to do it.

4

You can change the location where it's stored, but it might kill your flash down the road, due to excessive writing.

2 Likes
5

which location on openwrt is persistent where I can save the db file?

6

it'd be in /overlay, I guess

7

This works for me. I've added this small tar step to network init to save vnstats and collectd data
on gracefull reboot.

/etc/init.d/network

start_service() {
(...)
        procd_close_instance
+       tar xzf /etc/rrd.tar.gz -C /
  }
(...)
  shutdown() {
+       tar czf /etc/rrd.tar.gz /tmp/rrd /tmp/lib/vnstat/vnstat.db
        ifdown -a
        sleep 1
  }

and crontab monthly (might be often for you)

root@homehub5a:~# crontab -l
9 0 1 * * tar czf /etc/rrd.tar.gz /tmp/rrd /tmp/lib/vnstat/vnstat.db

also added /etc/rrd.tar.gz to /etc/sysupgrade.conf to survive sysupgrade

2 Likes
8

I'll try /overlay and give feeback later :+1:

9

Hi, I tried /overlay partition and it works well now, even after reboot. Thanks a lot