It seems that my Threshold on a Filesystem is broken.

For now, I am trying to get Windows boxes to alert when storage usage is above 90%.

When browsing to Component -> Filesystem section, I do see current usage and graph is shown with usage and threshold line.

When I click on Graphs (not under filesystem or component), I get an error on top

PythonThresholdException: User-supplied Python expression (here.getTotalBlocks() * .9) for maximum value caused error: ['usedBlocks_usedBlocks']

I believe these graphs are system built, not custom modified, but I dont recall.

Data Source called usedBlocks seems to point to proper OID.

Threshold "high disk usage" has "here.getTotalBlocks() * .9" for maximum value. It seems Zenoss doesnt like that anymore.

Graph Definition "Utilization" under usedBlocks datapoint has this in RPN: ${here/getTotalBlocks},/,100,*

I am a bit puzzled why this stopped working.

P.S. I am running Zenoss 4.2

Thank you.