raid-check

#!/bin/bash

megacli="/opt/MegaRAID/MegaCli/MegaCli64"

echo_stderr()
{
    echo "$@" >&2
}

help() {
    cmd=$(basename $0)
    echo "Usage: $cmd [-bdqsh]"
    echo ""
    echo "Options:"
    echo "    -b | --battery : report battery status"
    echo "    -d | --drives  : report physical and virtual drive status"
    echo "    -q | --quiet   : only display message to stderr if problem"
    echo "    -s | --silent  : same as -q/--quiet"
    echo "    -h | --help    : display this help text"
    echo ""
    echo "Exit Status:"
    echo "    0 : no problems found"
    echo "    1 : problem found"
    echo "    2 : invocation error"
}

temp="/tmp/raid-check.$$"
silent=0
chk_bat=0
chk_drv=0
bat_prob=0
drv_prob=0

for i in "$@" ;do
    case $i in
	-b|--battery)
	    chk_bat=1
	    shift
	    ;;
	-d|--drives)
	    chk_drv=1
	    shift
	    ;;
	-q|-s|--quiet|--silent)
	    silent=1
	    shift
	    ;;
	-h|--help)
	    help
	    exit 0
	    ;;
	*)
	    echo_stderr "error: unknown argument \"$i\""
	    exit 2
    esac
done

if [ "$(id -u)" -ne 0 ] ;then
    echo_stderr "error: must be run as root"
    exit 2
fi

# if neither battery nor drives specified, assume both wanted
if [ "$chk_bat" -eq 0 -a "$chk_drv" -eq 0 ] ;then
    chk_bat=1
    chk_drv=1
fi

if [ "$chk_bat" -eq 1 ] ;then
    $megacli -AdpBbuCmd -aAll | \
	egrep 'Battery State|Battery Replacement' | \
	sed 's/^ *//' | sed 's/  */ /g' | sed 's/ *:/:/g' >$temp
    if grep 'Battery State' $temp | grep -qv Optimal ;then
	bat_prob=1
    fi
    if grep 'Battery Replacement' $temp | grep -qv No ;then
	bat_prob=1
    fi
    if [ "$silent" -eq 0 ] ;then
	cat $temp
    fi
fi

if [ "$chk_drv" -eq 1 ] ;then
    $megacli -AdpAllInfo -aALL | \
	sed -n -e '/Virtual Drives/,/Failed Disks/p' >$temp
    if grep -q 'Degraded *: [^0]' $temp ;then
	drv_prob=1
    fi
    if grep -q 'Offline *: [^0]' $temp ;then
	drv_prob=1
    fi
    if grep -q 'Critical Disks *: [^0]' $temp ;then
	drv_prob=1
    fi
    if grep -q 'Failed Disks *: [^0]' $temp ;then
	drv_prob=1
    fi
    if [ "$silent" -eq 0 ] ;then
	cat $temp
    fi
fi

if [ "$silent" -eq 1 ] ;then
    if [ "$bat_prob" -eq 1 ] ;then
	echo_stderr "battery problem"
    fi
    if [ "$drv_prob" -eq 1 ] ;then
	echo_stderr "drive problem"
    fi
fi

if [ -e "$temp" ] ;then
    rm -f "$temp"
fi

if [ "$bat_prob" -eq 1 -o "$drv_prob" -eq 1 ] ;then
    exit 1
else
    exit 0
fi

#### nothing below has any effect ####

# $megacli -LDInfo -Lall -aALL | less

# $megacli -EncInfo -aALL

# other stuff for future enhancement
if false ;then
    for e in 252 ;do
	for s in 0 1 2 3 4 5 6 7 ;do
	    # $megacli -PDInfo -PhysDrv "[${e}:${s}]" -aALL
	    echo foo
	done
    done
fi