example: add a zoned block device write example with GC by trim workload

[fio.git] / examples / zbd-rand-write-trim-gc.fio

; Using the libaio ioengine, random write to a (zoned) block device. Write
; target zones are chosen randomly among the first 128 zones starting from
; device offset corresponding to the 524th zone of the device (524 x 256 MB).
; For first 3 seconds, run only random write. After that, run random write job
; and garbage collection simulation job in parallel. The garbage collection
; simulation job runs trim workload to reset the 128 zones randomly. Use flow
; option to make the zone resets happen every 128 blocks writes by the other
; job. This example does not specify max_open_zones. The limit of maximum
; open zones is obtained from the target block device.

[global]
group_reporting
zonemode=zbd
zonesize=256M
direct=1
time_based
runtime=30

filename=/dev/sdb
offset=524z

[warmup]
rw=randwrite
bs=2M
size=128z
ioengine=libaio
runtime=3

[wjob]
wait_for=warmup
rw=randwrite
bs=2M
size=128z
ioengine=libaio
flow=128

[trimjob]
wait_for=warmup
rw=randtrim
bs=256M
size=128z
ioengine=psync
flow=1