Munin contributed plugins

#!/bin/sh

# -*- sh -*-

#

# $Id: zfs_dmu_prefetch 11 2010-11-25 07:10:14Z patpro $

#

# Parameters:

#

# 	config   (required)

# 	autoconf (optional - used by munin-config)

#

# Magick markers (optional - used by munin-config and som installation

# scripts):

#%# family=auto

#%# capabilities=autoconf

export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# autoconf

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

   # Is the zfs-stats executable there at least ?

   if [ -x /usr/local/bin/zfs-stats ]; then

       if /usr/local/bin/zfs-stats -p > /dev/null 2>&1; then

           echo yes

           exit 0

       else

           echo "no"

           exit 0

       fi

   else

       echo "no (no /usr/local/bin/zfs-stats executable)"

       exit 0

   fi

fi

# config

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

    echo 'graph_title ZFS DMU prefech stats'

    echo 'graph_args --upper-limit 100 -l -100'

    echo 'graph_vlabel %'

    echo 'graph_category ZFS'

    echo 'graph_info This graph shows the DMU prefech stats'

/usr/local/bin/zfs-stats -Z | awk '/Hit Ratio/ {sub(/[\t ]*/,"");sub(/:.*/,""); displayname = $0; gsub(/[ .]/,"_",$0); print $0".label "displayname"\n"$0".min 0"}' 

/usr/local/bin/zfs-stats -Z | awk '/Miss Ratio/ {sub(/[\t ]*/,"");sub(/:.*/,""); displayname = $0; gsub(/[ .]/,"_",$0); print $0".label "displayname"\n"$0".min -100"}' 

	exit 0

fi

# This is the main part of the script, basically it calls

# /usr/local/bin/zfs-stats and processes its output

/usr/local/bin/zfs-stats -Z | awk '/Hit Ratio/ {sub(/[\t ]*/,"");sub(/:/,""); gsub(/[ .]/,"_",$0); sub(/%/,""); sub(/_/,".",$2); print $1".value "$2}'

/usr/local/bin/zfs-stats -Z | awk '/Miss Ratio/ {sub(/[\t ]*/,"");sub(/:/,""); gsub(/[ .]/,"_",$0); sub(/%/,""); sub(/_/,".",$2); print $1".value -"$2}'