Hi, I wasn't too happy with the HDD power mangement so I wrote the script below tailored to my needs. Basically, it looks for activity on the device and if there was none over the past 10 minutes it sends the disks to sleep. Now - this worked a charm ever since I wrote it, now recently I noticed the keepalive script (see even further below) I use to "keep a foot in the door" (liek when working with gimp so the array doesn't go to sleep and has to spin up and has me waiting everytime I did not save in a while) does not keep the array alive anymore, and I can't figure why. Command is issued, devname did not change, binaries are in place... Pointers appreciated. #!/bin/bash #custom power managment KISS style INTERVAL=600 HDPARM='/sbin/hdparm' LOGGER='/usr/bin/logger' ARRAY=md1 #how many transactions per second averaged over last 10min TPS=`iostat -d $ARRAY $INTERVAL 2 | grep ^$ARRAY |tail -n1| cut -d, -f2 | rev | cut -d" " -f1 | rev` if [[ $TPS -eq 0 ]]; then # idle, going to standby $HDPARM -y /dev/sda $HDPARM -y /dev/sdb $HDPARM -y /dev/sdc $HDPARM -y /dev/sdd $HDPARM -y /dev/sde $HDPARM -y /dev/sdf $LOGGER PWRWATCH sent array to standby else $LOGGER PWRWATCH detected activity, doing nothing fi -------------keepalive---------------- #!/bin/bash #keep array spinning while true; do dd if=/dev/urandom of=/mnt/media/wakeup bs=1M count=100 echo -n blip... time sync sleep 59 done -- -----BEGIN GEEK CODE BLOCK----- Version: 3.12 GCS d--(+)@ s-:+ a C++++ UL++ P+>++ L+++>++++ E-- W++ N o? K- w--(---) !O M+ V- PS+ PE Y++ PGP t++(---)@ 5 X+(++) R+(++) tv--(+)@ b++(+++) DI+++ D- G++ e* h>++ r* y? ------END GEEK CODE BLOCK------
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