I am using observium community edition to monitor a couple systems. Noticed a couple items that seem to make some of the graphs not too useful.

The health / Overview section for file systems is the first. It shows file systems with no problem, however it's graphing the file systems based on their percentage used NOT their used byte size. I don't know how others are using this, but here we grow file systems frequently which this produces graphs like the attached. Is there a way to either change what metric is graphed (bytes/ not percentage) or have a another overview graph of file systems with capacity used.

This gets much more important with ZFS when you add new vdev's or expand them as like the graph will expand all filesystems on that pool which doesn't seem to be too useful and there can be hundreds.

Another question on the same page is the operations/second graphs. This is displaying data twice or more when you are using device mapper you see both the sd* devices as well as the dm-* devices. This is very bad when you're talking about 100's of physical drives (seeing 200 or more depending on how you have it set up with partitions devices). Is there a way to filter out dm-* devices so only sd* ones are calculated/graphed?

Steve