Tweak to /usr/local/sbin/mover - no unnecessary spinups

I have my mover for my cache disk run every hour, and it bothered that every time it woke up my array drives, even when there was nothing to move.

So added this little tweak;

...

# If a previous invokation of this script is already running, exit

if [ -f /var/run/mover.pid ]; then

 if ps h `cat /var/run/mover.pid` | grep mover ; then

     echo "mover already running"

     exit 0

 fi

fi

 

# don't bother if there's only 1 entry (./)

cd /mnt/cache

lines=`find -depth -print|wc -l`

if [ $lines == '1' ]; then

       echo "nothing to move"

       exit 0

fi

 

echo $$ >/var/run/mover.pid

 

echo "mover started"

...

This way it will exit out if there's only 1 folder in /mnt/cache/ (the folder itself)

I will elaborate on this in the morning, right now it's way past bedtime.