Roman, > What is the firmware version? RVT41B6Q > Also, do you have an ASMedia ASM1062 controller to try (often seen on > motherboards for additional SATA ports)? That's the one I tested with. I'm afraid not. > With ASMedia only queued TRIM fails and everything else works fine. So I > wonder if 850's queued TRIM issue in 860's case remains only on some SATA > controllers. Looks likely. In that case we will have to extend the existing trim heuristic to match on controller as well. -- Martin K. Petersen Oracle Linux Engineering