Don't know if this is part of the scope of the document, but I think more information on how to debug nfsv4 mapping would be *very* useful. I ran into a situation a while ago where things were being mapped to nobody, and even Sun's support could not figure out why -- I knew it was a domain mismatch, but no matter what I tried, couldn't seem to get it to take the correct value.
It wasn't until I stumbled upon /var/run/nfs4_domain that I was able to start figuring out the issue -- it apparently was using the 'domain' value of /etc/resolv.conf (vs. using DNS to resolve the hostname) which had been misset. Unfortunately, I cannot recall finding any of this documented anywhere. This message posted from opensolaris.org
