Failed upgrade from 2.x to 3.x - sent to maintenance mode

So... I did:

apt-get update && apt-get dist-upgrade && omv-update

then

omv-release-upgrade

And it failed at some point. For reasons I would not like to get in to (my puppy jumped up on my and I clicked reboot on web esxi), I got sent in to recovery boot.

On normal boot, I get stuck here: https://imgur.com/a/yCEHr

And this is the mode I got in to after rebooting from the other error: https://imgur.com/a/YLwEr

Any ideas on how to fix this?

Edit:

I have tried researching more - but as it is I cannot find any of the upgrade scripts to see what the actual error was, or which logfile it might have been written to if any.

-- Running "apt-get update" again returns

Creating index of openmediavault plugins ...
E: dpkg was interrupted, you must manually run 'dpkg --configure -a' to correct the problem

Doing so reboots the system and does not fix the problem.

I tried it - it did a bunch of stuff, rebooted, but the error comes back

Thats what I was afraid of - I have a backup I can go back to as well, but I have to shut the whole physical server off to assign the raidcontroller to the VM.