Munin contributed plugins

#!/bin/bash

true << =cut

=head1 NAME

ext2 - Wildcard plugin shows ext2/3/4 filesystem information (mount count, last checked, lifetime writes)

=head1 CONFIGURATION

 [ext2_*]

 group disk,floppy

=head1 AUTHOR

Andreas Hrubak <>

=head1 LICENSE

GPLv2

=head1 MAGICK MARKERS

 #%# family=disk

 #%# capabilities=autoconf

=cut

print_details() {

	local myname

	while read line; do

		key=${line%%:*}

		val=`echo ${line#*:}`

		val1=${val%% *}

		[ -z "$line" ] && break

		case "$key" in

		"Mount count")		myname=$1; mc=$val ;;

		"Maximum mount count")	mmc=$val ;;

		"Last checked")		lcts=`date +%s -d "$val" 2>/dev/null` ;;

		"Check interval")	ciis=$val1 ;;

		"Lifetime writes")	lwGB=$val1 ;;

		esac

	done

	[ -n "$myname" ] && echo "$myname ${mc:-0} ${mmc:-0} ${lcts:-0} ${ciis:-0} ${lwGB:-0}"

}

lse2() {

       while read -r line ; do

               value=( $line );

               LANG=C dumpe2fs -h "${value[1]}" 2>/dev/null | print_details "${value[0]}"

       done <<< "$(lsblk -o NAME,PATH,FSTYPE -r | grep ext[2-4] | uniq )"

}

if [ "$1" = "autoconf" ]; then

	if which dumpe2fs >/dev/null 2>&1; then

		echo yes

	else

		echo no

	fi

	exit 0

fi

if [ "$1" = "suggest" ]; then

	lse2 | while read name rest; do

		echo mounts_$name

		echo checked_$name

		echo writes_$name

	done

	exit 0

fi

self=${0##*/}

self=${self#*_}

plugin=${self%%_*}

if [ -n "${self//[!_]/}" ]; then

	blkdev=${self#*_}

	blkdevAppend=" ($blkdev)"

	blkdevpath=$(lsblk -o PATH,NAME -r | grep "$blkdev" | uniq | cut -d' ' -f1)

else

	blkdev=

	blkdevAppend=

fi

if [ "$1" = "config" ]; then

	echo "graph_category disk"

	args="-l 0"

	case "$plugin" in

	mounts)

		echo "graph_vlabel times"

		echo "graph_title Ext2 Filesystem mount details"

		;;

	checked)

		echo "graph_vlabel days"

		echo "graph_title Ext2 Filesystem fsck interval"

		;;

	writes)

		args="$args --base 1024"

		echo "graph_vlabel bytes"

		echo "graph_title Ext2 Filesystem lifetime writes$blkdevAppend"

		;;

	esac

	echo "graph_args $args"

	if [ -z "$blkdev" ]; then

		lse2

	else

		LANG=C dumpe2fs -h "$blkdevpath" 2>/dev/null | print_details "$blkdev"

	fi | \

	while read name mounts maxmounts last interval writes; do

		[ -z "$blkdev" ] && blkdevAppend2=" ($name)" || blkdevAppend2=

		name_esc=${name//-/_}

		case "$plugin" in

		mounts)

			echo "${name_esc}_mounts.label Mount count$blkdevAppend2"

			echo "${name_esc}_mounts.draw LINE2"

			echo "${name_esc}_maxmounts.label Max. mount count$blkdevAppend2"

			echo "${name_esc}_maxmounts.draw LINE1"

			;;

		checked)

			echo "${name_esc}_last.label Since checked$blkdevAppend2"

			echo "${name_esc}_last.draw LINE2"

			echo "${name_esc}_last.cdef ${name_esc}_last,86400,/"

			echo "${name_esc}_interval.label Check interval$blkdevAppend2"

			echo "${name_esc}_interval.draw LINE1"

			echo "${name_esc}_interval.cdef ${name_esc}_interval,86400,/"

			;;

		writes)

			echo "${name_esc}_writes.label Lifetime writes$blkdevAppend2"

			echo "${name_esc}_writes.type GAUGE"

			echo "${name_esc}_writes.draw LINE2"

			echo "${name_esc}_writes.cdef ${name_esc}_writes,1073741824,*"

			;;

		esac

	done

	exit 0

fi

## fetch ##

if [ -z "$blkdev" ]; then

	lse2

else

	LANG=C dumpe2fs -h "$blkdevpath" 2>/dev/null | print_details "$blkdev"

fi | \

while read name mounts maxmounts last interval writes; do

	name_esc=${name//-/_}

	case "$plugin" in

	mounts)

		echo "${name_esc}_mounts.value $mounts"

		echo "${name_esc}_maxmounts.value $maxmounts"

		;;

	checked)

		now=`date +%s`

		past=$(( now - last ))

		echo "${name_esc}_last.value $past"

		echo "${name_esc}_interval.value $interval"

		;;

	writes)

		echo "${name_esc}_writes.value $writes"

		;;

	esac

done