check_md_raid

Yet I changed some lines, making this script more useful for our environment, from the last review.

Next step would be to parse the raid status, but so far I got the messages listed below, so this is how far my script could go.

Cheers!

[======>…………..] check = 34.7% (72921088/209711382) finish=6891.0min speed=330K/sec
[========>…………] check = 43.7% (91719680/209711382) finish=480.0min speed=4096K/sec

#!/bin/bash
#
# Created by Sebastian Grewe, Jammicron Technology
#

# Get count of raid arrays
RAID_DEVICES=`grep ^md -c /proc/mdstat`

# Get count of degraded arrays
#RAID_STATUS=`grep “[.*_.*]” /proc/mdstat -c`
RAID_STATUS=`egrep “[.*(=|>|.).*]” /proc/mdstat -c`

# Is an array currently recovering, get percentage of recovery
RAID_RECOVER=`grep recovery /proc/mdstat | awk ‘{print $4}’`
RAID_RESYNC=`grep resync /proc/mdstat | awk ‘{print $4}’`

# Check raid status
# RAID recovers –> Warning
if [[ $RAID_RECOVER ]]; then
STATUS=”WARNING – Checked $RAID_DEVICES arrays, recovering : $RAID_RECOVER”
EXIT=1
elif [[ $RAID_RESYNC ]]; then
STATUS=”WARNING – Checked $RAID_DEVICES arrays, resync : $RAID_RESYNC”
EXIT=1
# RAID ok
elif [[ $RAID_STATUS == “0” ]]; then
STATUS=”OK – Checked $RAID_DEVICES arrays.”
EXIT=0
# All else critical, better save than sorry
else
EXTEND_RAID_STATUS=`egrep “[.*(=|>|.|_).*]” /proc/mdstat | awk ‘{print $2}’ | uniq -c | xargs echo`
STATUS=”WARNING- Checked $RAID_DEVICES arrays, $RAID_STATUS have failed check: $EXTEND_RAID_STATUS ”
EXIT=1
fi

# Status and quit
echo $STATUS
exit $EXIT