I haven’t had as much time as I would have liked to post more information on gathering I/O stats with zpool iostat and presenting them via SNMP. However, I have a couple test graphs up and running to see how the current stat gathering is working, and I figured I would show some charts.

After fumbling around a bit with bash in Part 3, I got to a point where I could graph a single storage pool using the data that was being updated in our /tmp/iostat.cache file. While this is great for small ZFS setups, what happens if you have more than one pool? Since I was creating [...]

After seeing a basic example of creating a custom OID for the zpool capacity, I really wanted to extend some additional statistics that are available using the zpool iostat command. In it’s simplest form, you can use the following command to see two sets of statistics on a zpool: The command is very basic, run [...]

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