I've been trying to install OL9.2 on a Dell R630. The drives are freshly formatted. I used Rufus on Windows in DD mode to write out the OL9 installer ISO to a thumb drive. In the OL installer UI, I set the locations to use EXT4 rather than XFS. It completed just fine. Upon boot, it fails the same 6x in a row the exact same way every time no matter what I do.
image
I tried manually entering all the following grub options:

set root=(hd0)
set prefix=(hd0)/boot/grub
insmod normal
normal

That failed with the same fs.c:121:unknown filesystem error.

I wiped the drives and reinstalled OL9.2 a 7th time leaving all the defaults as XFS and it finally worked. FWIW, the same thing happens with the 9.1 and 9.0 installers as well.

What needs to happen for OL9 to use EXT4?