fmtopo should be documented
The fmtopo command is incredibly useful and powerful, but it lacks documentation and is relegated to an obscure location in the filesystem (/usr/lib/fm/fmd/fmtopo). It's interface is unstable, but that's no reason not to document it and provide a link from /usr/bin or /usr/sbin. It should get a man page and become available from a typical bin directory.
Updated by Jorge Schrauwen about 5 years ago
Well it seems it does atleast have a '-h' :) And I agree, the commands looks interesting at first glance but would be more useful with an actual man page.
Seems with -V it can be use to quickly map a disk to a port-controller combo without using something like the lsi tools!