I attempted to do it on the latest version of OMV (currently 7.4.17) but after about 2 hours of following the instructions, hunting down the AMD drivers (neither the links on MCG's site which point to a previous release or where the downloads section on AMD's pointing to the most recent one actual site work...which is wonderful), and then doing the various compilations...I was left with packages that failed to install because the patches were for the 6.6 kernel, his instructions were for either 6.1 or 6.11, but the current release of OMV comes with 6.12.
I wasn't giving up that easily (I'm a Linux System Engineer, and I've been using Linux for like 15 years), so decided to find an earlier release of OMV and give it a shot with that. I downloaded 7.4.17 (https://sourceforge.net/projects/openme ... o/download) since that was released in the same month as MCG's test on TrueNAS, after installation I saw it used the 6.1 kernel so I was hopeful. I installed the 6.1.37 kernel and sources (a minor update from the 6.1.27 kernel it came with), and followed his guide, which required minimal compilation, since he did most of the "leg work" and provided the already patched sources...AND IT WORKED. Total time was maybe 15-20 minutes.
OMV won't add the interfaces automatically, so you have to add them under the Interfaces section manually and activate DHCP on them, but once I did that it picked up an IP without issue.
The only problem is you can't update to the most recent version of OMV (or apply any updates without blacklisting the kernel update somehow) since it uses the new 6.12 kernel
As before, I refuse to be defeated!
I'm gonna attempt it again soon, and will probably have to manually patch it, but for now I'm just happy that it works.Edit: I gave up on trying to use the integrated 2x 10G AMD NICs in OMV and I'm using an external 10G NIC with a PCI-E to M.2 adapter, which means sacrificing one of the drive slots, but it has been working fine for like 2 months. I also had to disable both of the AMD NICs in the BIOS in order to free up PCI lanes.