Disk stats script

disk_stats.sh

#!/bin/bash

DISKS=('sda' 'sda2')
OUT_DIR=/srv/http/
RRD_DIR=/srv/shared/

NOW=$(date +%s)

for disk_name in ${DISKS[@]}; do

RRDFILE=${RRD_DIR}disk.${disk_name}.rrd

case $1 in
        create)
                rrdtool create $RRDFILE \
                        --start ${NOW} \
                        DS:reads:COUNTER:60:U:U \
                        DS:writes:COUNTER:60:U:U \
                        DS:write_ms:COUNTER:60:U:U \
                        DS:io_ms:COUNTER:60:U:U  \
                        RRA:AVERAGE:0.5:1:600      \
                        RRA:AVERAGE:0.5:6:700      \
                        RRA:AVERAGE:0.5:24:775

        ;;
        update)
                reads=$(/srv/bin/dsutil reads_issued ${disk_name})
                writes=$(/srv/bin/dsutil writes_completed ${disk_name})
                time_read=$(/srv/bin/dsutil spent_read ${disk_name})
                io_time=$(/srv/bin/dsutil time_io ${disk_name})
                /usr/bin/rrdtool update $RRDFILE \
                        N:$reads:$writes:$time_read:$io_time

        ;;
        graph)
                /usr/bin/rrdtool graph ${OUT_DIR}diskio_${disk_name}.png \
                        --title "IO calls on ${disk_name}" \
                        DEF:read=$RRDFILE:reads:AVERAGE \
                        DEF:write=$RRDFILE:writes:AVERAGE \
                        LINE3:read#FF0000:"Reads" \
                        LINE3:write#22FF00:"Writes" \
                        -s -1h -v "IO Calls"
                /usr/bin/rrdtool graph ${OUT_DIR}diskio_6hr_${disk_name}.png \
                        --title "IO calls on ${disk_name} (6hr)" \
                        DEF:read=$RRDFILE:reads:AVERAGE \
                        DEF:write=$RRDFILE:writes:AVERAGE \
                        LINE3:read#FF0000:"Read" \
                        LINE3:write#22FF00:"Writes" \
                        -s -6h -v "IO calls"
                /usr/bin/rrdtool graph ${OUT_DIR}disktime_${disk_name}.png \
                        --title "IO Time on ${disk_name}" \
                        DEF:total=$RRDFILE:io_ms:AVERAGE \
                        DEF:write=$RRDFILE:write_ms:AVERAGE \
                        AREA:total#11ad00:"Total time" \
                        LINE2:write#4411ff:"Write Time" \
                        -s -1h -v "I/O Time (ms)"
                /usr/bin/rrdtool graph ${OUT_DIR}disktime_6hr_${disk_name}.png \
                        --title "IO TIme on ${disk_name} (6hr)" \
                        DEF:total=$RRDFILE:io_ms:AVERAGE \
                        DEF:write=$RRDFILE:write_ms:AVERAGE \
                        AREA:total#11ad00:"Total Time" \
                        LINE2:write#4411ff:"Write Time" \
                        -s -6h -v "I/O Time (ms)"
        ;;
        *)
        echo "wut";
        exit 1;
        ;;
esac

done

dsutil

#!/bin/bash

if [ "x$1" == "x" ]; then
        echo "no argument given."
        exit 1
fi
if [ "$x2" == "x" ]; then
        echo "no disk/partition given"
        exit 1
fi

DISK=$2

disk_info=$( cat /proc/diskstats | grep "$DISK " | sed -e 's/  */ /g' | cut -f 5                                                                                                                                                             - -d " ")

function getfield()
{
        echo $disk_info | cut -f $1 -d " "
}

case $1 in
        reads_issued)      getfield 1 ;;
        reads_merged)      getfield 2 ;;
        sectors_read)      getfield 3 ;;
        spent_read)        getfield 4 ;;
        writes_completed)  getfield 5 ;;
        writes_merged)     getfield 6 ;;
        sectors_written)   getfield 7 ;;
        spent_writing)     getfield 8 ;;
        in_progress)       getfield 10;;
        time_io)           getfield 11;;
        *) echo "Unkown argument $1. Need one of:"
           echo "{reads_issued|reads|merged|sectors_read|spent_read|writes_compl                                                                                                                                                             eted|writes_merged"
           echo "|sectors_written|spent_writing|in_progress|time_io}"
           exit 1
           ;;
esac