On Thu, 18 Jul 2019 23:00:31 -0400 "Martin K. Petersen" <martin.petersen@xxxxxxxxxx> wrote: > I have tested two mSATA 860s on two different systems, both with Intel > AHCI controllers, and queued trim works fine for me. What is the firmware version? 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. Before tried with AMD chipset ones, but on those the 860s are known[1] to have serious NCQ issues in general, not just TRIM, so they are not useful for this test. 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. [1] https://bugzilla.kernel.org/show_bug.cgi?id=201693 -- With respect, Roman