#!/bin/sh
case "$1" in
fio)
# null ioengine discards all I/O — quick sanity check with no disk access
fio --name=sanity --ioengine=null --rw=randwrite --size=64k \
--bs=4k --iodepth=1 --numjobs=1 2>&1 | grep -qF "sanity"
;;
esac