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#!/bin/bash
set -x
gen_fio_file() {
iter=$1
f=$2
cat > randio-$$-${iter}.fio <<EOF
[randio]
blocksize_range=32m:128m
blocksize_unaligned=1
filesize=10G:20G
readwrite=randrw
runtime=300
size=20G
filename=${f}
EOF
}
sudo apt-get -y install fio
for i in $(seq 1 20); do
fcount=$(ls donetestfile* 2>/dev/null | wc -l)
donef="foo"
fiof="bar"
if test ${fcount} -gt 0; then
# choose random file
r=$[ ${RANDOM} % ${fcount} ]
testfiles=( $(ls donetestfile*) )
donef=${testfiles[${r}]}
fiof=$(echo ${donef} | sed -e "s|done|fio|")
gen_fio_file $i ${fiof}
else
fiof=fiotestfile.$$.$i
donef=donetestfile.$$.$i
gen_fio_file $i ${fiof}
fi
sudo rm -f ${donef}
sudo fio randio-$$-$i.fio
sudo ln ${fiof} ${donef}
ls -la
done
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