disk benchmark using fio at different block sizes

disk-bench.sh

#!/bin/env bash
for bs in 4k 16k 64k 256k 1M 4M; do
  echo "Running burst speed test of $1 with block size $bs";     
  fio --name=burst_speed_test --ioengine=libaio --iodepth=1 --rw=rw --direct=1 --runtime=60 --time_based \
  --verify=crc32c --do_verify=1 --verify_fatal=1 --verify_dump=1 --verify_backlog=1000  \
  --filename=$1 --bs=$bs --numjobs=1 --group_reporting; 
done