I just did the omv-release-upgrade on my primary OMV box after getting my backup box running.
I was getting some odd messages in the webgui after updating, so I decided to reboot, and when I did, it never came back online.
Just like rebooting my backup OMV NAS after upgrading it on Friday, I can watch it go through the boot process and when it tries to init the ethernet adapters, it says:
ZitatConfiguring network interfaces...ifup: failed to open statefile /run/network/ifstate: No such file or directory
I logged in as root, and did mkdir /run/network, then ran ifup -a and the network interfaces came up. I then rebooted to see if the network would come up again, and it does not. Same error again. I am afraid to reboot my backup OMV box now since I expect that it will have the same problem again.
Now after rebooting the primary box, and seeing that error again, it gets to Starting NFS kernel daemon: nfsd and it just hangs there. I can't log in at all.