It can be issue with one or more Mellanox FW. My own CX3 was work fine, but I have reports where it don’t work. Same implementation - but different FW. I can refresh a memory to found a reports in case someone have interested. > 17 мая 2020 г., в 11:35, Sagi Grimberg <sagigrim@xxxxxxxxx> написал(а): > > > > On 5/14/20 3:09 AM, Alexey Lyashkov wrote: >> CX3 with fast registration isn’t stable enough. >> I was make this change for Lustre for year or two ago, but it was reverted by serious bugs. > > This must be issues with the Lustre implementation, all the rest of the ULPs (almost) default > to FRWR.