#!/bin/sh -e

. aux.sh

raid3_create()
{
	providers=${1}

	name="r3test"

	graid3 label ${name} ${providers}

	echo /dev/raid3/${name}
}

raid3_destroy()
{
	full_path=${1}

	graid3 stop `basename ${full_path}`
}

# main

single_speed=`dev_read_speed /dev/ggate1\`mkid 0\` 2`

for providers_cnt in 3 5 9 17 ; do

	speed=`raid_speed ${providers_cnt} raid3_create raid3_destroy`

	data_disks_cnt=$((${providers_cnt} - 1))

	exp=$((${data_disks_cnt} * ${single_speed}))
	drive_avg=$((${speed} / ${data_disks_cnt}))
	percent=`echo "scale=1 ; 100 * ${speed} / ${exp}" |bc -q`

	printf "%2d disks: %8d b/s (exp %8d), avg disk load: %7d (%5.1f%%)\n" \
		${providers_cnt} \
		${speed} \
		${exp} \
		${drive_avg} \
		${percent}
done

# EOF