i figured it out, i think.
i keep getting emergency mode, or missing raid etc.
the issue is that the drives are not seen until the fan,led service is loaded
the drives are trying to be mounted at boot and are not seen so it goes into emergency mode
i just setup omv with unionfs and the same thing.
i found this when i restarted the service to change the temp and flip the display
the hdds dropped out and gave errors.
reboot is not an issue, its when you shut down and power back up. always emergency mode and missing drives.
first attempt was mdadm raid lvl 5 with 4 drives. everything went fine until i shutdown to put the top case back on. the service was stopped before the raid was unmounted and the drives were listed as failed and removed.
gave up on raid 5 mdadm and i setup unionfs.
same thing. everything was great until i shutdown.
at reboot. the drives were not seen when trying to mount as the service for the lcd was not loaded yet. emergency mode…
i had it fixed by mounting the drives after boot using the fix posted here with fc.local and a mount.sh file. but that doesnt fix the shutdown issue. as the service is stopped before the drives are unmounted.
starting to regret my purchase