cyla

#!/bin/sh
#%# family=auto
#%# capabilities=autoconf suggest

if [ "$1" = "autoconf" ]; then
    echo yes
    exit 0
fi

if [ "$1" = "suggest" ]; then
    awk ' / [hs]d[a-z][0-9]* / { print $3 }' /proc/diskstats
    exit 0
fi

device=`basename $0 | sed 's/^diskutil_//g'`
ncpu=$(egrep '^cpu[0-9]+ ' /proc/stat | wc -l)

if [ "$1" = "config" ]; then
    echo 'graph_category disk'
    echo "graph_title Disk Utilization ${device}"
    echo 'graph_args --base 1000 -l 0'
    echo 'graph_vlabel %'
    echo 'util.label utilization'
    echo 'util.info utilization %'
    echo 'util.type GAUGE'
    echo 'util.draw LINE2'
    exit 0
fi

statefiledir=/var/lib/munin/plugin-state/
statefile="${statefiledir}diskutil-${device}.state"

newticks=`awk '/^cpu / { print $2+$3+$4+$5+$6+$7+$8+$9+$10 }' /proc/stat`
newioticks=`cat /proc/diskstats | grep " $device " | awk '{ print $13 }'`
if [ -s $statefile ] ; then
    oldticks=`awk '{print $1}' $statefile`
    oldioticks=`awk '{print $2}' $statefile`
else
    oldticks=$newticks
    oldioticks=$newioticks
fi
echo "${newticks} ${newioticks}" > $statefile

deltaticks=$(($newticks-$oldticks))
deltaioticks=$(($newioticks-$oldioticks))

echo "${deltaioticks} ${deltaticks} ${ncpu}" | awk '{ printf "util.value %f\n", $1/$2*$3*10 }'