On 19/08/2020 15:21, Ming Lei wrote:
I guess that elevator switch may have to be involved in your reproducer, stale request which are freed before switching to new elevator can stay in tags->rqs[], then these stale requests are retrieved when reading iostat before old request slots in tags->rqs[] are reset.
Yeah, just switching -> "none" seems to do it. If I hack the elevator code to default to "none", then no issue.
Thanks
