ReadyNAS and Cacti: grumble

Since we've been having a few temperature issues lately, I thought it might be a good time to start using our Cacti to graph temperatures, so we can see the trends (as well as the alerts which Nagios sends us). We have a SafetyNet5 which for some reason I cannot get to produce graphs... still puzzling over that one.

But we have a ReadyNAS at most of our sites, so why not get the temperature data and graph that? Good idea, right? Yep, in theory. If I ever get the chance, I'd like to ask the authors of the ReadyNAS MIB why they thought that returning temperature data as a String containing both Celcuis and Fahrenheit data was A Good Idea. For some funny reason, Cacti isn't that keen on numbers that look like this: "32.0C/89.6F"

Oh well, nice try. There is a neato solution for this on the cacti forums, but:

1. it requires a more recent Cacti than we have
   
2. it requires a more recent ReadyNAS firmware than we have

Bugger.