#!/bin/bash
#
# This script reads it's configuration from /etc/sysconfig/raid-check
# Please use that file to enable/disable this script or to set the
# type of check you wish performed.

[ -f /etc/sysconfig/raid-check ] || exit 0
. /etc/sysconfig/raid-check

[ "$ENABLED" != "yes" ] && exit 0

case "$CHECK" in
    check) ;;
    repair) ;;
    *) exit 0;;
esac

dev_list=""
for dev in `grep "^md.*: active" /proc/mdstat | cut -f 1 -d ' '`; do
	echo $SKIP_DEVS | grep -w $dev >/dev/null 2>&1 && continue
	if [ -f /sys/block/$dev/md/sync_action ]; then
	    array_state=`cat /sys/block/$dev/md/array_state`
	    sync_action=`cat /sys/block/$dev/md/sync_action`
	    # Only perform the checks on idle, healthy arrays
	    if [ "$array_state" = "clean" -a "$sync_action" = "idle" ]; then
		check=""
		echo $REPAIR_DEVS | grep -w $dev >/dev/null 2>&1 && \
			check="repair"
		echo $CHECK_DEVS | grep -w $dev >/dev/null 2>&1 \
			&& check="check"
		[ -z "$check" ] && check=$CHECK
		echo "$check" > /sys/block/$dev/md/sync_action
		[ "$check" = "check" ] && dev_list="$dev_list $dev"
	    fi
	fi
done

if [ -n "$dev_list" ]; then
	checking=1
	while [ $checking -ne 0 ]
	do
		sleep 3
		checking=0
		for dev in $dev_list; do
			sync_action=`cat /sys/block/$dev/md/sync_action`
			if [ "$sync_action" != "idle" ]; then
				checking=1
			fi
		done
	done
	for dev in $dev_list; do
		mismatch_cnt=`cat /sys/block/$dev/md/mismatch_cnt`
		if [ "$mismatch_cnt" -ne 0 ]; then
			echo "WARNING: mismatch_cnt is not 0 on /dev/$dev"
		fi
	done
fi