OPM has a fixed counter catalog and luns have READ_DATA and WRITE_DATA but volumes do not, which surprised me. If you need these you could use harvest, an alternative community supported data collector which forwards metrics to Graphite/InfluxDB which will be posting to the toolchest shortly.
I'm using an existing InfluxDB instance and the dashboards in Grafana dashboard don't show any data. I can see data going into InfluxDB from the Filers but think the Dashboards may need updating to use point at that data?
Yes, the default Grafana dashboards provided by Harvest are defined with Graphite metric strings and functions. So while Harvest can send data to InfluxDB since it accepts the Graphite newline seperated metrics format you will not be able to use the default dashboards as-is but rather will need to refactor to work with InfluxDB. Sorry I don't have better news for you.
Cheers, Chris Madden
Storage Architect, NetApp EMEA (and author of Harvest)