A Ceph performance benchmark script.

ceph_bench.sh

#!/bin/bash

OSD=( ceph-srv4 ceph-srv5 )
VM=( 32 35 37 )
SLEEP=480

if [ "$1" = "-q" ]; then
    SILENT=true
else
    SILENT=false
fi

#copy fio files
echo "Copy fio script to VMs? [Y]/n"
if $SILENT; then
    ans="Y"
else
    read ans
fi

if [ -z $ans ] || [ "$ans" = "Y" ]; then
    for i in "${VM[@]}"; do
	    scp bench.fio ubuntu@172.29.68.$i:~/
    done
fi

#run dd
echo "Run dd? [Y]/n"
if $SILENT; then
    ans="Y"
else
    read ans
fi

if [ -z $ans ] || [ "$ans" = "Y" ]; then
	#run dd
	for i in "${VM[@]}"; do
	    ssh ubuntu@172.29.68.$i sudo dd if=/dev/zero of=/mnt/file bs=4M count=2500 oflag=direct &
	done

	#sleep
	sleep 120 

	#gather results
	for i in "${VM[@]}"; do
	    ssh ubuntu@172.29.68.$i sudo rm /mnt/file
	done
fi

#run sequential write benchmark
echo "Run sequential write? [Y]/n"
if $SILENT; then
    ans="Y"
else
    read ans
fi

if [ -z $ans ] || [ "$ans" = "Y" ]; then
	#drop cache
	for i in "${OSD[@]}"; do
	    ssh $i sudo bash drop_cache.sh
	done
    
	#run sequential write
	for i in "${VM[@]}"; do
	    ssh ubuntu@172.29.68.$i sudo fio bench.fio --section seq-write-64k --output seq_write_$i &
	done

	#sleep
	sleep $SLEEP

	#gather results
	for i in "${VM[@]}"; do
	    scp ubuntu@172.29.68.$i:~/seq_write_$i .
	done
fi

#run sequential read benchmark
echo "Run sequential read? [Y]/n"
if $SILENT; then
    ans="Y"
else
    read ans
fi

if [ -z $ans ] || [ "$ans" = "Y" ]; then
	#drop cache
	for i in "${OSD[@]}"; do
	    ssh $i sudo bash drop_cache.sh
	done
    
	#run sequential read
	for i in "${VM[@]}"; do
	    ssh ubuntu@172.29.68.$i sudo fio bench.fio --section seq-read-64k --output seq_read_$i &
	done

	#sleep
	sleep $SLEEP

	#gather results
	for i in "${VM[@]}"; do
	    scp ubuntu@172.29.68.$i:~/seq_read_$i .
	done
fi

#run random write benchmark
echo "Run random write? [Y]/n"
if $SILENT; then
    ans="Y"
else
    read ans
fi

if [ -z $ans ] || [ "$ans" = "Y" ]; then
	#drop cache
	for i in "${OSD[@]}"; do
	    ssh $i sudo bash drop_cache.sh
	done
    
	#run random write
	for i in "${VM[@]}"; do
	    ssh ubuntu@172.29.68.$i sudo fio bench.fio --section rand-write-4k --output rand_write_$i &
	done

	#sleep
	sleep $SLEEP

	#gather results
	for i in "${VM[@]}"; do
	    scp ubuntu@172.29.68.$i:~/rand_write_$i .
	done
fi

#run random read benchmark
echo "Run random read? [Y]/n"
if $SILENT; then
    ans="Y"
else
    read ans
fi

if [ -z $ans ] || [ "$ans" = "Y" ]; then
	#drop cache
	for i in "${OSD[@]}"; do
	    ssh $i sudo bash drop_cache.sh
	done
    
	#run random read
	for i in "${VM[@]}"; do
	    ssh ubuntu@172.29.68.$i sudo fio bench.fio --section rand-read-4k --output rand_read_$i &
	done

	#sleep
	sleep $SLEEP

	#gather results
	for i in "${VM[@]}"; do
	    scp ubuntu@172.29.68.$i:~/rand_read_$i .
	done
fi