#!/bin/sh
exec </dev/null
export LANG=C

for dev; do
	bs="$((1024*256))"
	size="$(fdisk -l "/dev/$dev" |sed -ne 's/^Disk [^,]*, \([1-9][0-9]*\) bytes.*/\1/p')"
	size="$(($size / 1024))" 2>/dev/null || continue
	[ "$size" -gt 0 ] 2>/dev/null || continue

	hdparm -T -t "/dev/$dev" || continue
	smartctl -a -d ata "/dev/$dev" >$dev.1.smart 2>&1

	time badblocks -w "/dev/$dev"
	smartctl -a -d ata "/dev/$dev" >$dev.2.smart 2>&1

	count="$(($size / $bs - 1))"
	q="$(echo "sqrt($count)" |bc)"
	q1="$(($q - 1))"
	for s in `seq 0 "$q1"`; do
		for i in `seq "$s" "$q" "$count"`; do
			first="$(($i * $bs))"
			last="$((($i + 1) * $bs))"
			echo "count=$i first=$first last=$last"
			time badblocks -n -c $bs "/dev/$dev" $last $first
		done
	done &>$dev.bb
	smartctl -a -d ata "/dev/$dev" >$dev.3.smart 2>&1
done