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Bug #53645 ยป stressfs.sh

Dan van der Ster, 12/16/2021 04:32 PM

 
#!/bin/bash

init () {
mkdir -p /cephfs
SECRET=$(ceph auth get-key client.admin)
umount /cephfs
mount -t ceph `hostname -s`:/ /cephfs -oname=admin,secret=${SECRET}
mkdir -p /cephfs/stressfs
cd /cephfs/stressfs
echo init: done
}

loadgen () {
i=0
while true
do
f=$(uuid -v4)
mkdir -p ${f::3}
touch ${f::3}/${f}
i=$((i+1))
if [ "$(($i % 1000))" == "0" ]
then
echo loadgen: created $i files
fi
done
}

rand_maxmds () {
while true
do
sleep $(shuf -i 60-120 -n 1)
MAX=$(shuf -i 1-3 -n 1)
echo rand_maxmds: setting max_mds $MAX
ceph fs set cephfs max_mds $MAX
echo rand_maxmds: done
done
}

rand_export_pin () {
setfattr -n ceph.dir.pin -v -1 /cephfs/stressfs
while true
do
sleep $(shuf -i 300-600 -n 1)
cd /cephfs/stressfs
for DIR in `find . -mindepth 1 -maxdepth 1 -type d | sort`
do
PIN=$(shuf -i 0-2 -n 1)
echo rand_export_pin: pinning $DIR to $PIN ...
setfattr -n ceph.dir.pin -v $PIN $DIR
done
done
}

trim () {
while true
do
sleep $(shuf -i 0-20 -n 1)
echo trim: trimming files more than 120m old...
find /cephfs/stressfs/ -type f -mmin +120 -delete &> /dev/null
find /cephfs/stressfs/ -type d -empty -delete &> /dev/null
echo trim: done
done
}

stat () {
while true
do
echo stat: long listing all files...
ls -lR /cephfs/stressfs/ &> /dev/null
echo stat: done
done
}

init
loadgen &
trim &
stat &

RANK=$(ceph daemon mds.`hostname -s` status | jq -r .whoami)
if [ "$RANK" == "0" ]
then
rand_maxmds &
rand_export_pin &
fi

trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM EXIT
wait
    (1-1/1)