vfs.dev.* OPS not working

[Jburkemx]

It doesn't seem that vfs.dev.* 'ops' isn't working on newer linux kernels:

Ubuntu 12.04 LTS:

root@server:~# uname -a
Linux spartan 3.2.0-39-generic #62-Ubuntu SMP Thu Feb 28 00:28:53 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

root@server:~# zabbix_agent -V
Zabbix agent v2.0.5 (revision 33558) (12 February 2013)
Compilation time: Apr  4 2013 15:04:50

root@server:~# zabbix_agent -t vfs.dev.read[sda,operations]
vfs.dev.read[sda,operations][sda,operations]  [u|3966436]

root@server:~# zabbix_agent -t vfs.dev.read[sda,ops]
vfs.dev.read[sda,ops][sda,ops]                [m|ZBX_NOTSUPPORTED]

root@server:~# zabbix_agent -t vfs.dev.read[sda,ops,avg1]
vfs.dev.read[sda,ops,avg1][sda,ops,avg1]      [m|ZBX_NOTSUPPORTED]

[BDiE8VNy]

see: ZBX-7597