On Wed, Aug 17, 2022, at 2:54 PM, Chris Murphy wrote: > On Wed, Aug 17, 2022, at 2:33 PM, Jan Kara wrote: >> On Wed 17-08-22 14:18:01, Chris Murphy wrote: >>> >>> >>> On Wed, Aug 17, 2022, at 2:15 PM, Jan Kara wrote: >>> >>> > OK, if this indeed passes then b6e68ee82585 ("blk-mq: Improve performance >>> > of non-mq IO schedulers with multiple HW queues") might be what's causing >>> > issues (although I don't know how yet...). >>> >>> I can revert it from 5.12.0 and try. Let me know which next test is preferred :) >> >> Let's try to revert this first so that we have it narrowed down what >> started causing the issues. > > OK I've reverted b6e68ee82585, and removing > megaraid_sas.host_tagset_enable=0, and will restart the workload... I ran this for 7 hours and the problem didn't happen. -- Chris Murphy