Ok long story short - I accidentally deleted my system environment recently (I logged a job for this)
I believe (?) that as I detached the disk which contained this environment, the system was smart enough, to identify that it contained the system environment and relocated it to my primary storage ARRAY.
(When I went to check on S.Env, the menu seemed to indicate it was there, I relocated it again and thought nothing of it)
I made a backup of the system setting at the time in case though.
I have since rebooted finally a few days later and there's no WebUI, no SMB shares, no VMs booting.
System still is getting the right IP and I can log in to it via shell and navigate around to see my data is safe (as I expected, you guys are great!)
/mnt/ARRAY/etcetc still exists.
I'm fairly sure, I saw a poster on reddit complain of the same problem with a WebUI not coming back for them for some reason on RC1 as well. Therefore I'm uncertain if my system environment deletion is entirely, unrelated. (This is my first reboot, since moving to 12 RC1)
So, what do you guys suggest I do, I'd like to help solve this for others as well, so I'm happy to use the IPMI shell and run some commands to dump some info somewhere.
Thanks guys, please do get back to me soonish. I know you're all busy but I'm fully out of action.