From: Jens Axboe <axboe@xxxxxxxxx> Sent: Wednesday, August 22, 2018 8:49 AM > > On 8/22/18 9:47 AM, Michael Kelley (EOSG) wrote: > > Any special configuration needed to run this test? Any options needs on > > command line? I figured out to enable CONFIG_BLK_DEV_ZONED, but > > now I get the following on my 4.18.3 kernel: > > > > root@MHKfio2:~# ./fio/t/zbd/run-tests-against-zoned-nullb > > ./fio/t/zbd/run-tests-against-zoned-nullb: line 27: ./fio/t/zbd/test-zbd-support: No such file or > directory > > > > /sys/kernel/config/nullb/nullb0/* and /dev/nullb0 are present as expected. > > You need current -git from Linus, the zoned null_blk support was added > after 4.18. So grab the linux-next tree, or are you referring to something else? In my 4.18.3 tree, the source file drivers/block/null_blk_zoned.c is there and builds. Michael