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'control' => 'CVAR=diskIODevice;$CVAR =~ /sda|sr|disk|xvda|dm\-/',
This tells NMIS that the OID diskIODevice should be checked and only capture the values into RRD if they match the regular expression given. Please see the Advanced Modelling: When a single SNMP variable isn't enough page for further info on custom variables.- indexed => 'true',
Tell NMIS this is an indexed table, it will then go and use the index specified in the sys section above to iterate - graphtype => ''
what graph-types will this rrd section create data for
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