License

Copyright (C) 2008-2017 Oliver Bohlen.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

A copy of the license is included in the section entitled "GNU Free Documentation License".

Introduction

This documentation comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law.

Howto: HD-Spindown for Gentoo Linux

You can check the current power state with

hdparm -C /dev/disk
Please be caraful with this solution. If you set the timeout to low it is possible that your disk is spinning up an down very often which is noch very good for your hardware...

If you want to use this solution you need the following howto(s) finished:

Required software

The required software has to be installed with the following command(s):
emerge sys-apps/hdparm

Changes in /etc/crontab

File permissions:
Owner: root
Group: root
Permissions: -rw-r--r--

Click here for a download of the complete file: /etc/crontab

Changed on 30.11.10
Issued by olli
Beginning line 27

Shutdown /dev/sdb if it is inactive

*/5 * * * *     root    /usr/local/sbin/hdspindown.sh sdb

Changes in /usr/local/sbin/hdspindown.sh

File permissions:
Owner: root
Group: root
Permissions: -rwxr-xr-x

Click here for a download of the complete file: /usr/local/sbin/hdspindown.sh

Changed on 30.11.10
Issued by olli
Beginning line 2

This is a small script to observe the inactivity of given disk(s). If the given disks are longer then $inactive minutes inactive they will be spinned down and set to sleep (e.g. for powersaving). If a disk ist shutdown a mail will be sent to root.

#!/bin/bash

# Time of inactivity after which the disk is spinned down
inactive=30

# Get default profile
. /etc/profile

# Function for checking the disks state
function checkactive {
 # If the disk is not spinned down - shutdown the disk
 if hdparm -C /dev/$1 | grep active >/dev/null
 then
  echo "`date` Spinning down $1" >> /tmp/spinned-down
  echo "1" >/tmp/spindown$1
  spindown $1
# else
#  echo "`date` Already spinned down $1" >> /tmp/spinned-down
 fi
}

# Function for sending a mail and spindown the disk
function spindown {
 echo "Issuing sleep on disk $1:

`ls -l /sys/block/$1/stat`
`cat /sys/block/$1/stat`

`ls -l /tmp/$1-stat`
`cat /tmp/$1-stat`

Date: `date`

Issuing command: hdparm -y /dev/$1:
`hdparm -y /dev/$1 2>&1`
" | mail -s "Spinning down $1" root
}

# Check commandline
if [ $# -eq 0 ]
then
 echo "This is a small script to observe the inactivity of given disk(s). If the given disks are longer then $inactive minutes inactive they will be spinned down and set to sleep (e.g. for powersaving). If a disk ist shutdown a mail will be sent to root.
 
 Please enter the disk(s) you want do observe seperated with space. E.g for observing /dev/hdb and /dev/sda:
$0 hdb sda"
 exit 1
fi

# Go through the arguments
for disk in $*
do
 # If the disk exists
 if [ -L "/sys/block/$disk" ]
 then
  # Create diff-file if it dows not exist
  [ -f /tmp/$disk-stat ] || touch /tmp/$disk-stat
  # If there was nothing changed 
  if diff /sys/block/$disk/stat /tmp/$disk-stat >/dev/null 2>&1
  then
   # Check weather the disk is longer then $inactive inactive
   find /tmp/$disk-stat -mmin -$inactive | grep $disk >/dev/null || checkactive $disk
  # If the file is changed
  else
   # Save changed file
   cat /sys/block/$disk/stat > /tmp/$disk-stat
   if [ -f /tmp/spindown$disk ]
   then
    echo "Disk $disk active again" | mail -s "$disk active again" root
    echo "`date` Disk active: $disk" >> /tmp/spinned-down
    rm -f /tmp/spindown$disk
   fi
#   echo "`date` Disk active: $disk" >> /tmp/spinned-down
  fi
 # If the disk does not exist
 else
  echo "Disk $disk seems not to exist"
 fi
done

Please send a feedback to: doc<at>gabosh.net

Howto listing
File Index

Here you can find the official Gentoo Linux Forums where you can find a lot of answers.

Here a link to the official Gentoo Linux Homepage.

Edit Howto

About / Impressum

Click here for About / Impressum

Wishlist

If you want to support my work you can find my Amazon whishlist here