net-snmp exec runs script over and over!

[brendonc]

Greetings:

I set up a snmpdiskio stats under net-snmp i.e.

exec .1.3.6.1.4.1.2021.54 hdNum /usr/local/bin/snmpdiskio hdNum

etc. on our NFS servers, which have 41 disks (LUNs). I noticed a walk was extremely slow, so I put an echo at the top of the script to append to a log file each time it's run. It appears that net-snmp runs the script for EACH index plus a couple extra times (43 times). I've searched high and low and haven't been able to figure out why it's doing this. I've tested this on SLES 9 running net-snmp 5.1.3 and CentOS 4 running 5.1.2. Am I missing something? Why does net-snmp run this script over an over again? Anyone else experience this?

Brendon

UPDATE: net-snmp 5.4.1 using "extend" (exec has been deprecated) does not do this. I'd still like to figure out why exec on the older versions reruns the script over and over!