#!/bin/bash
#
# PoH/LCC-Stats
#

function rpad {
   word="$1"
   while [ ${#word} -lt $2 ]; do
   word="$word$3";
   done;
   echo "$word";
}

# SMART attribute #9 - Power on hours
poh_sda=`smartctl -a /dev/sda |grep "^  9" | tr -s " " | cut -d"-" -f2 | tr -d " "`
poh_sdb=`smartctl -a /dev/sdb |grep "^  9" | tr -s " " | cut -d"-" -f2 | tr -d " "`
poh_sdc=`smartctl -a /dev/sdc |grep "^  9" | tr -s " " | cut -d"-" -f2 | tr -d " "`
poh_sdd=`smartctl -a /dev/sdd |grep "^  9" | tr -s " " | cut -d"-" -f2 | tr -d " "`

# Pad to 6 characters
poh_sda=`rpad $poh_sda 6 " "`
poh_sdb=`rpad $poh_sdb 6 " "`
poh_sdc=`rpad $poh_sdc 6 " "`
poh_sdd=`rpad $poh_sdd 6 " "`

# SMART attribute #193 - LCC
lcc_sda=`smartctl -a /dev/sda |grep "^193" | tr -s " " | cut -d"-" -f2 | tr -d " "`
lcc_sdb=`smartctl -a /dev/sdb |grep "^193" | tr -s " " | cut -d"-" -f2 | tr -d " "`
lcc_sdc=`smartctl -a /dev/sdc |grep "^193" | tr -s " " | cut -d"-" -f2 | tr -d " "`
lcc_sdd=`smartctl -a /dev/sdd |grep "^193" | tr -s " " | cut -d"-" -f2 | tr -d " "`

# Pad to 6 characters
lcc_sda=`rpad $lcc_sda 6 " "`
lcc_sdb=`rpad $lcc_sdb 6 " "`
lcc_sdc=`rpad $lcc_sdc 6 " "`
lcc_sdd=`rpad $lcc_sdd 6 " "`

# Power on days
pod_sda=$(echo $poh_sda/24 | /usr/bin/bc)
pod_sdb=$(echo $poh_sdb/24 | /usr/bin/bc)
pod_sdc=$(echo $poh_sdc/24 | /usr/bin/bc)
pod_sdd=$(echo $poh_sdd/24 | /usr/bin/bc)

# Pad to 4 characters
pod_sda=`rpad $pod_sda 4 " "`
pod_sdb=`rpad $pod_sdb 4 " "`
pod_sdc=`rpad $pod_sdc 4 " "`
pod_sdd=`rpad $pod_sdd 4 " "`

# LCC per hour
lph_sda=`echo $lcc_sda $poh_sda | awk '{ print $1/$2 }'`
lph_sdb=`echo $lcc_sdb $poh_sdb | awk '{ print $1/$2 }'`
lph_sdc=`echo $lcc_sdc $poh_sdc | awk '{ print $1/$2 }'`
lph_sdd=`echo $lcc_sdd $poh_sdd | awk '{ print $1/$2 }'`

# Pad to 6 characters
lph_sda=`rpad $lph_sda 3 " "`
lph_sdb=`rpad $lph_sdb 3 " "`
lph_sdc=`rpad $lph_sdc 3 " "`
lph_sdd=`rpad $lph_sdd 3 " "`

# Output
echo "Harddisk power-on hours"
echo "----------------------------------------------"
echo "/dev/sda: ${poh_sda} hours (${pod_sda} days)"
echo "/dev/sdb: ${poh_sdb} hours (${pod_sdb} days)"
echo "/dev/sdc: ${poh_sdc} hours (${pod_sdc} days)"
echo "/dev/sdd: ${poh_sdd} hours (${pod_sdd} days)"
echo
echo "Harddisk load cycle counts"
echo "----------------------------------------------"
echo "/dev/sda: ${lcc_sda} unloads (per hour: ${lph_sda})"
echo "/dev/sda: ${lcc_sdb} unloads (per hour: ${lph_sdb})"
echo "/dev/sda: ${lcc_sdc} unloads (per hour: ${lph_sdc})"
echo "/dev/sda: ${lcc_sdd} unloads (per hour: ${lph_sdd})"