#!/bin/sh
. /etc/utils.sh

sata_blkdev=$(find_sata_blkdev)
sata_dev=${sata_blkdev#/dev/}

if [ -e /sys/block/${sata_dev}/stat ]; then
  interval=$1
  if [ -z "$interval" ]; then
    interval=15
  fi

  while :; do
    read line </sys/block/${sata_dev}/stat
    echo "$line"
    sleep "$interval"
  done
else
  while :; do sleep 1000000; done
fi