On Fri, 2020-05-29 at 20:30 -0700, Zhengzhi Xiong wrote: > Hi, > I am using FIO3.19. I fully filled my zns device. I believe with > setting zonemode=zbd, FIO will reset the full zone before assign > writing command. But looks like I still got io_u error with > zonemode=zbd. > > I will appreciate if you can provide any advice. The upstream kernel does not support ZNS yet. So I am guessing you are using a custom kernel/NVMe driver. Without the same, helping with your problem will be hard as we cannot determine if the problem is from fio or due to your kernel not implementing correctly zoned block device support for ZNS. Another thing to look at: Are you using the mq-deadline scheduler ? You need it for keeping regular write commands ordered and avoid unaligned write command failures. > > Thank you. > > Best, > Zhengzhi -- Damien Le Moal Western Digital Research
