On Thu, 2021-01-21 at 13:05 +0000, John Garry wrote: > > > > > Confirmed my suspicions - it looks like the host is sent more > commands > than it can handle. We would need many disks to see this issue > though, > which you have. > > So for stable kernels, 6eb045e092ef is not in 5.4 . Next is 5.10, and > I > suppose it could be simply fixed by setting .host_tagset in scsi host > template there. If it's really just that, it should be easy enough to verify. @Donald, you'd need to test with a 5.10 kernel, and after reproducing the issue, add .host_tagset = 1, to the definition of pqi_driver_template in drivers/scsi/smartpqi/smartpqi_init.c. You don't need a patch to test that, I believe. Would you able to do this test? Regards, Martin