Red Hat

#!/bin/bash

# Who should e-mails about failure go to
MAILTO='admin@domain.com'

LOG_FILE=/root/raid.log
OK_FILE=/root/raid.ok

# If OK file doesn't exist create it
if [ ! -e $OK_FILE ]; then
cat /proc/mdstat > $OK_FILE
fi

rm -f $LOG_FILE

SYSTEM=`uname --nodename`

cat /proc/mdstat > $LOG_FILE

DIFF=`diff $OK_FILE $LOG_FILE | wc -l `

if [ $DIFF -ne 0 ]; then
echo "RAID failed"
mail -s "URGENT: RAID disk failure detected on $SYSTEM" $MAILTO < $LOG_FILE
else
echo "RAID OK"
fi
exit 0