Diskuzní fórum Elektro Bastlírny

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root@nas326:/mnt/store# hd-idle -a sda -i 600 -a sdb -i 300  
symlinkPolicy=0, defaultIdle=600, defaultCommand=scsi, defaultPowerCondition=0, debug=false, logFile=, devices={name=sda, givenName=sda, idle=600, commandType=scsi, powerCondition=0}{name=sdb, givenName=sdb, idle=300, commandType=scsi, powerCondition=0}

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#!/bin/bash
# Usage: spindown sda 10 - spins down after 10 seconds

# Remember arguments.
disk=$1
timeout=$2
if test -z "$disk"
then
	echo "Disk not defined." >&2
	exit 1
fi
if test -z "$timeout"
then
	echo "Timeout not defined." >&2
	exit 1
fi

# Initial values.
last_read=0
last_write=0
last_time=$(date '+%s')
sd_time=$last_time

# Loop.
while true
do
	# Get current values.
	time=$(date '+%s')
	read=$(cat /sys/block/$disk/stat | awk '{ print $1 }')
	write=$(cat /sys/block/$disk/stat | awk '{ print $5 }')

	# Test if there is a change.
	if test $read -ne $last_read -o $write -ne $last_write
	then
		# Change found, update last_time.
		last_time=$time
	fi

	# Update last values.
	last_read=$read
	last_write=$write
	
	# Test if in idle too long.
	time_idle=$(( $time - $last_time ))
	#echo "Idle for seconds: $time_idle" >&2
	if test $time_idle -ge $timeout -a $last_time -gt $sd_time
	then
		# Idle too long. Spin down.
		#echo "Spinning down." >&2
		echo hdparm -y /dev/$disk
		sd_time=$time
	fi
	
	# Wait a second.
	sleep 1
done