Links to instructions for installing TrueNAS with front panel display capability on some ReadyNAS

I'm the author of the panel driver. Sandshark, thanks for posting about it in the first place, and sorry it's taken me a while to turn up. I'm on the forum now, so I'm glad to answer things here as well as on GitHub.

Laserbait, I replied to your GitHub issue on the 26th, sorry for the wait. The short version:

The storage pool is the one you want, not the boot pool. A TrueNAS update creates a new boot environment, so anything sitting in the boot pool can get lost, and the installer wants a path under /mnt anyway.

It does survive updates. The files live on the pool, which an update doesn't touch, and the installer registers a POSTINIT script in the TrueNAS config DB, which an update keeps.

Sandshark is right about the 428. The config struct I pulled this out of is named "rn426_8" in the stock kernel, so NETGEAR treated the two models as one board. If you ever have the front bezel off, I'd love a photo of the small board's silkscreen. Mine reads "RN526&RN626X Front Board V20".

On fan control, there's a writeup and a script in the repo now, docs/fan-control.md and tools/it87-fancontrol.sh, so it needn't all be done by hand. portalman, if you've got yours working already I'd be interested in how you went about it. I've only the one machine to go on.

On other models, I agree the RN426 code won't port as it stands, though not quite for the reason you'd expect. The RN426 turns out to be the awkward one. Its panel GPIOs hang off the Denverton SoC through a driver NETGEAR wrote themselves, which never made it to mainline, and that's why my code pokes SoC registers directly.

Every other config I can find in that kernel uses gpio_ich instead. That's ordinary mainline Linux, still in the kernel today. So the other models are probably easier than mine, not harder. I've put the pin maps I extracted in docs/porting.md.

There's a quick test that would tell us whether that holds, if anyone fancies it. Any non-RN426 unit will do. OS6 is too old for gpiodetect, so it needs a live USB, and GRML works fine:

sudo modprobe lpc_ich gpio-ich

gpiodetect

If a chip labelled gpio_ich turns up, it's worth me writing the code. If nothing does, we've found that out in two minutes instead of after I've written a driver blind. No rush, and a negative result is just as useful. I've only got the one RN426, so I can't run it myself.