I'm trying to get the disk I/O from my CentOS 5.4 system, and from what I can tell the MIB (UCD-DISKIO-MIB) isn't compiled into CentOS 5.4. Can anyone confirm this? If I need to compile a new net-snmp, I can do that, but I'd rather not. Are there any DiskIO counters that are installed by default with net-snmp on CentOS?