<source lang='bash'>
cd /var/virtualization
fio --ioengine=gfapi \
--volume=virtualization \
--iodepth=16 \
--numjobs=16 \
--runtime=60 \
--group_reporting \
--name=fio-test
</source>
=== Simulating Qemu/Libvirt re-open ===
'''WIP'''
There is currently a [https://bugzilla.redhat.com/show_bug.cgi?id=1061229 ressource leak in gfapi] which can be triggered by re-opening files. The following is a way on how to reproduce it using fio.
The ideas are:
* use threads instead of forks to make sure that ressources are not cleaned up by the OS
* use a much smaller file such that the jobs can finish
* every job is run after the previous finished (instead of in parallel)
<source lang='bash'>
fio --ioengine=gfapi \
--volume=virtualization \
--brick=10.1.120.11 \
--filename=fio.test \
--size=4M \
--direct=1 \
--rw=randrw \
--refill_buffers \
--norandommap \
--bs=8k \
--rwmixread=70 \
--iodepth=16 \
--numjobs=16 \
--thread --stonewall \
--runtime=60 \
--group_reporting \
--name=fio-test
</source>