hartvig.de

Hey, that’s what I have searched for a long time. Thanks, man. It works!

Great post – works really well. Thanks.

If anybody’s interested, I also added some code at the top of the script to check that it is being run as root…

if [ "$(id -u)" != "0" ]; then
echo “This script must be run as root” 1>&2
exit 1
fi

Obviously this is not needed for cron, but useful for testing etc.

hey!

many thanks for the script.

for external usb drive compatibility i added the following lines.

#convert UUID to ID
disk=$(blkid | grep $1 | cut -c 6-9)

#check if the disk uuid, or pieces of it were ok
if [ ! -n $disk ]; then
echo “no such disk – disk!”
exit 1
fi

cheers

Are md5sum and sed really necessary? Could you not just do a diff between OLDstate.txt and NEWstate.txt?

[ -z $(diff OLDstate.txt NEWstate.txt) ] && sdparm –flexible –command=stop /dev/$1

Translation: Spin down when diff returns a zero-length string on comparing OLDstate.txt and NEWstate.txt. This gets rid of a few lines of code and reduces external dependencies.

Awesome, just what I was looking for since my internal SATA HD’s would not spin down anymore after upgrade to ubuntu 10.04

*/5 * * * * root sh /home/user/bin/spindown/spindown.sh sdX

should the sdX be sda, sdb, sdc etc or should it stay sdX

thanks

When i run this command, the drive stops for a second and immediately spins back up. any ideas?

# !/bin/sh

if [[ -e /dev/$1 ]]; then
echo $1 Spin power down
notify-send –icon=’/usr/share/icons/GartoonRedux/scalable/apps/gaim.svg’ “Spinning Powerdown: $1″
else
# Get new state from diskstats
NEWstate=$(cat /proc/diskstats | grep $1)
echo $NEWstate > /var/ds.state/NEWstate.$1

# compare md5 sums
md5new=$(md5sum /var/ds.state/NEWstate.$1 | sed ‘s/ .*//’)
md5old=$(md5sum /var/ds.state/OLDstate.$1 | sed ‘s/ .*//’)

# if no changes, power down
if [ "$md5new" = "$md5old" ]; then
sdparm –flexible –command=stop /dev/$1 &>/dev/null
fi

# Write current state to file
echo $NEWstate > /var/ds.state/OLDstate.$1

echo $1 Device Does Not Exist !
exit 0
fi

So… i put a notify in the script and the oldstat,txt is replaced with oldstate.$ so will permit to use it on more than one disk as the extension will be .sdX and made a sort of check if the disk exist, was a good idea and a good job to start wirh, thanks

# !/bin/sh

if [[ -e /dev/$1 ]]; then
echo $1 Spin power down
notify-send –icon=’/usr/share/icons/GartoonRedux/scalable/apps/gaim.svg’ “Spinning Powerdown: $1″
# Get new state from diskstats
NEWstate=$(cat /proc/diskstats | grep $1)
echo $NEWstate > /var/ds.state/NEWstate.$1

# compare md5 sums
md5new=$(md5sum /var/ds.state/NEWstate.$1 | sed ‘s/ .*//’)
md5old=$(md5sum /var/ds.state/OLDstate.$1 | sed ‘s/ .*//’)

# if no changes, power down
if [ "$md5new" = "$md5old" ]; then
sdparm –flexible –command=stop /dev/$1 &>/dev/null
fi

# Write current state to file
echo $NEWstate > /var/ds.state/OLDstate.$1
else
echo $1 Device Does Not Exist !
exit 0
fi

ops i posted the wrong one… this one works

yes sdx could be sda sdb sde or so on, seems working fine here,but i found something similar:
#!/bin/bash
let a=0

for i in `seq 0 100`
do
let a=`cat /proc/diskstats | grep “0 $1″ | awk ‘{print $(NF-2)}’`+a
sleep 0.1s
done
echo $a
if [ $a == 0 ]
then
sdparm -C stop /dev/$1
fi
exit 0

seems working also, and no need to write down the stats….

Even if i can say that the disk is almost powerd on if you even access to the desktop, i dont see much usefull this can be, the drive goes on off too many times and this is harmfull for it.

i just finished my netgear script today, nice stuff, keepd up the line at the max speed connection than can get on that moment and changes speed if the s/n or attenuation changes on the line to not break down,it’s a sort of stay on the max speed the line can support on that moment.
running that for a few days now, and i believe who is far from the box it’s a need.

you can always set 10 instead of 0.1…

@admin
This script is nice ’cause it makes sure that there is no activity within a 10 second period. Run it periodically as a cron job.

What would I need to do to spin two drives down?

Cheers

Sorbus