On Fri, Apr 24, 2026 at 05:43:55PM +0200, Edgar Fuß wrote: > For a long time, I've been looking for an NFSv4 server for NetBSD, and, > failing to find one, thinking about writing one. > > Does anyone know more about NFSv4 than "largely improved NFS with Kerberos > support"? > Does anyone know more about Kerberos that "centralized authentication > service handing out signed authentication tickets for services"? > > Is it possible to have a v4-only server or does some part of the protocol > fall back to v3?
Absolutely possible. AWS has the EFS storage service that's NFSv4-only. > What I have in mind is to have a privilledged login process doing the > authentication and forking off a worker process running under the > logged in user's credentials and thus have the kernel do all nifty > permission checking. > > Is someone familiar enough with NFSv4/Kerberos to immediately point out > to me why that can't possibly work? I'm not experienced with Kerberized NFSv4, but I believe something much like what you suggest is possible. It works similarly with AFS already.
