fi

	for ((i = 0; i < 20; i++)); do
		test -f ${WORK_DIR}/$1/1/.minio.sys/format.json
		v1=$?
		nextInES=$(($1 + 1)) && [ $nextInES -gt 3 ] && nextInES=1
		foundFiles1=$(find ${WORK_DIR}/$1/1/ | grep -v .minio.sys | grep xl.meta | wc -l)
		foundFiles2=$(find ${WORK_DIR}/$nextInES/1/ | grep -v .minio.sys | grep xl.meta | wc -l)
		test $foundFiles1 -eq $foundFiles2
		v2=$?
		[ $v1 == 0 -a $v2 == 0 ] && return 0
		sleep 10
	done

function prepare_block_devices() {
	set -e
	mkdir -p ${WORK_DIR}/disks/ ${WORK_DIR}/mnt/
	sudo modprobe loop
	for i in 1 2 3 4; do
		dd if=/dev/zero of=${WORK_DIR}/disks/img.${i} bs=1M count=2000
		device=$(sudo losetup --find --show ${WORK_DIR}/disks/img.${i})
		sudo mkfs.ext4 -F ${device}
		mkdir -p ${WORK_DIR}/mnt/disk${i}/
		sudo mount ${device} ${WORK_DIR}/mnt/disk${i}/
		sudo chown "$(id -u):$(id -g)" ${device} ${WORK_DIR}/mnt/disk${i}/
	done

		exit 1
		;;
	esac
}

assert_check_golang_env() {
	if ! which go >/dev/null 2>&1; then
		echo "Cannot find go binary in your PATH configuration, please refer to Go installation document at https://golang.org/doc/install"
		exit 1
	fi

	installed_go_version=$(go version | sed 's/^.* go\([0-9.]*\).*$/\1/')