Hi guys!
Looks like I have exactly the same issue here. I had my Raid5 EXT4 with 4 HDD's, 3TB each.
Deccided to add another, 5th drive (same 3TB size, formatted in Windows NTFS ).
I've started "resize", marked new drive and leave admin panel. After several hours I wanted to log in to OMV, but it was shut down.
After powering on, I couldn't log in. I have same information as nomax on connected screen.
Later I've discoverd, that when I disconnect ONE of the drives, I can log in to OMV (OMV starts, but I can see info "RAID status not OK. Exiting...failed).
When I'm looged in, I see all connected HDD's, but no RAID, no files
device n/a
label n/a
mounted no
refferenced yes
status missing
I would be greatfull for any help, cos now it looks like I've lost almoust 12TB of my stuff.
OMV 2.2.5