[global]
ioengine=libaio
direct=1
filename=/dev/fioa
iodepth=128
size=1G
loops=1
group_reporting=1
readwrite=write
do_verify=0
verify=md5
numjobs=1
thread
bssplit=512/50:1M/50

[thread0]
offset=0G

[thread-mix0]
offset=4G
readwrite=rw
size=1G
bsrange=512:1M