Key vfs.fs.size[/,used] in zabbix monitoring not work?

Question

I have some hosts in a Template in zabbix for monitoring. All items are work correctly for all hosts except an item vfs.fs.size[/,used] just for one of them in zabbix web interface.

The host OS is Debian 7.3 and Zabbix agent version is 2.0.9.

Note: every time i try that key by zabbix_get from the host, it work correctly and just in zabbix web interface nothing monitor.

Answer 1

You can also calculate the item by

vfs.fs.size[/,total] - vfs.fs.size[/,free]

It looks like vfs.fs.size[/,used] has a history of being reported improperly.