On 01/10/2020 12:41, Shinichiro Kawasaki wrote: > The option --max_open_zones was introduced to fio together with zonemode=zbd, > since the beginning of fio's zoned block device support. If the test target > device is a zoned block device, the test case block/004 checks that fio > supports zonemode=zbd. I think this check is valid for --max_open_zones also. > OK thanks for clarifying, Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>