Ceph

The language used in crush maps is very well defined and
hierarchical. I don't know how to do this sort of thing,
but I'm sure there are tools that could be used to translate
a crush map into a visual representation of a tree of bubbles
of some kind. The bubbles could be annotated with extra
info like weight, crush algorithm and hash type, and might
also use a different shape for each type defined in the tree.

I think having a quick visualization of a map you're working
with might be very helpful for quickly identifying problems
or mistakes in the configuration.