Hi,
This is what i did to fix the "OMV" issue:
- in bios, i set to disabled pci-express slot where was connected my raid card.
- reboot.
- login
- editing mdadm.conf with nano /etc/mdadm/mdadm.conf
- adding ARRAY <ignore> devices=/dev/sda
- save
- reboot
- enabled pci-express slot
same error.
Then, I checked on different OMV 4.x machines of mine, and there is in mdadm.conf at the end of file, a section with:
this machine runs OMV4 and have 1 SSD and 1 Raid HW volume (with card).
/dev/sda1 => raid HW volume
/dev/sdb1 => ssd OS.
but on the new machine, issue.
During my different checks, i start my machine, with disabled pci-express slot, and in OMV webgui, i could see raid HW volume. I was surprised.
And i understood what was wrong:
it was not disabling pci-express slot, but disabling Bios on pci-express slot. So, with disabled bios pci-e slot, my OMV works fine, my Raid volume is mounted, and i opened mdadm.conf file,
there is nothing after this line # definitions of existing MD arrays
So, there were a lot of messages mdadm during boot, because of my wrong settings in bios. Not OMV cause.
thanks