vfs.dev.read/write does not work

[q53]

Zabbix 2.0.1. SL 6.2 on both server and agent.
I am trying to make disks IO stat graph.

I have set vfs.partitions.discovery UserParameter as shown in userparameter_examples.conf and define vfs.dev.read[{#PARTITION},sps,avg1] item.
If do "zabbix_get -s host -k 'vfs.dev.write[sda,sps,avg1]'" all runs fine. But any requests from the server printed in the log file like:
15768:20120808:195435.999 Requested [vfs.dev.write[sda ,sps ,avg1]]
15768:20120808:195435.999 Sending back [ZBX_NOTSUPPORTED]
There are certainly no spaces in the item definition.
Any clue?

[tchjts1]

I have set vfs.partitions.discovery UserParameter <snip>

See this in the Wiki for guidance in creating discovery rules:

http://www.zabbix.com/documentation/...evel_discovery

[q53]

See this in the Wiki for guidance in creating discovery rules:

http://www.zabbix.com/documentation/...evel_discovery

Thanks, tchjts1, but the problem had no relation to a discovery configuration at whole. Only, to exact item.

After recreation of the items, it started working.
Mystery.