> [ 286.547112] nvme nvme4: Connect Invalid Data Parameter, cntlid: 1 > [ 286.555181] nvme nvme4: failed to connect queue: 1 ret=16770 It looks like the admin queue pair (0) worked at least. The code path for the two is a bit different. This error sounds familiar. I wonder if there's an error code 16xxx cheat sheet out there. We recently had to downgrade a ConnectX firmware version to fix a similar issue, but on a CX7. I can't remember the firmware versions involved but I could probably dig it up. Have you tried TCP mode? Whether TCP works or not will be useful information for debugging.
