OK intelligent is a stretch but all my non-pi systems spin fans up/down based on cooling needs. I wanted that on my Pis too. When my current code didnt' work on my pi4 since it appears wiringpi and its gpio command don't support this chipset yet I found a different way to do it. First expose the har...

I was using image 2017-08-16-raspbian-stretch-lite.img on the pi3 client. The server was dist-upgraded from Wheezy and is a rPi B model if that helps.

Lee

Re-read. dist-upgraded a pi that had a hard drive to stretch (a chore on its own). Verified your exact issue. I network traced the connection for that IP, I see NFS mount request come in, get accepted, then the client wants to do some NFS stuff. Well, while the server ACCEPTED the mount on NFS V2 it...

It worked for me but I have a few differences. I started with a fresh copy of 2017-08-16-raspbian-stretch-lite.img. Touched ssh/tweaked fstab and cmdline.txt after it came up, mounted its new home over NFS and rsync'd the lot there. The NFS server is a small x86_64 Ubuntu Xenial box that handles DNS...