Munin contributed plugins

#!/bin/sh

#

# Plugin to monitor the power state of hard disk drives on FreeBSD.

#

# Configure the plugin to run as root by adding the following to

# /usr/local/etc/munin/plugin-conf.d/plugins.conf:

#

# [freebsd_hdd_power_state]

# user root

#

# You can also specify the monitored devices using the 'env.devices'

# environment variable, if autoconfiguration doesn't work for you:

#

# env.devices ada0 ada1 ada2 ada3 ada4 ada5 ada6 ada7

#

# Copyright (c) 2014, Petteri Valkonen <petteri.valkonen@iki.fi>

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are met:

#     * Redistributions of source code must retain the above copyright

#       notice, this list of conditions and the following disclaimer.

#     * Redistributions in binary form must reproduce the above copyright

#       notice, this list of conditions and the following disclaimer in the

#       documentation and/or other materials provided with the distribution.

#     * Neither the name of the copyright holder nor the

#       names of its contributors may be used to endorse or promote products

#       derived from this software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND

# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY

# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#

#%# family=auto contrib

#%# capabilities=autoconf

DEVICES=${devices:-$(iostat -x | tail -n +3 | egrep -o '^a?da[0-9]+')}

case $1 in

    config)

        cat <<EOM

multigraph $(basename $0)

graph_title HDD power state

graph_vlabel Power state

graph_args --upper-limit 1 -l 0

graph_scale no

graph_category disk

graph_info The power state of the hard disk drives on the system (1 is spun up, 0 is idle/standby).

EOM

        echo $DEVICES | awk 'BEGIN{OFS=""} { for (i = 0; i++ < NF;) print "power", i, ".label ", $i }'

        exit 0;;

    autoconf)

	if [ -z "$DEVICES" ] ; then

            echo "no (no devices found)"

	else

            echo yes

        fi

        exit 0;;

esac

INDEX=1

set -- $DEVICES

for DEVICE in $@ ; do

    STATE=$(camcontrol cmd $DEVICE -a "E5 00 00 00 00 00 00 00 00 00 00 00" -r - 2>/dev/null | awk '{print $10}')

    if [ -z "$STATE" ] ; then

        VALUE="-1"

    else

        VALUE=$(echo "$(echo "ibase=16; $STATE" | bc) / 255" | bc)

    fi

    printf "power%d.value %d\n" $INDEX $VALUE

    INDEX=$(expr $INDEX + 1)

done