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Initial version
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plugins/other/zfs-filesystem-graph
Executable file
93
plugins/other/zfs-filesystem-graph
Executable file
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#!/bin/sh
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#
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# Plugin to monitor a ZFS Filesystem
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#
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# Wildcard-plugin to monitor a zfs filesystems.
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# To monitor a filesystem, link zfs_fs_<zpool>_<filesystem> to this file. E.g.
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#
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# ln -s /usr/share/munin/node/plugins-auto/zfs_fs_ /etc/munin/node.d/zfs_fs_tank_foo
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#
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# ...will monitor tank/foo fs.
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#
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# You can monitor zpool as well by a link on zfs_fs_<zpool>
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#
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# Parameters understood:
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#
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# config (required)
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# autoconf (optional - used by munin-config)
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#
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# Magic markers - optional - used by installation scripts and
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# munin-config:
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#
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#%# family=auto
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#%# capabilities=autoconf
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myname=`basename $0 | sed 's/^zfs_fs_//g' | sed -e 's/_/\//'`
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name="${name-\<$myname\>}"
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REGEX="${regex-\<$name\>}"
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if [ "$1" = "autoconf" ]; then
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# Makes little sense to autoconf if you can't suggest
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echo no
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exit 0
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fi
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if [ "$1" = "suggest" ]; then
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exit 0
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fi
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usedbydataset=`zfs get -p usedbydataset $myname | grep $myname | awk '{print $3}'`
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usedbysnapshots=`zfs get -p usedbysnapshots $myname | grep $myname | awk '{print $3}'`
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available=`zfs get -p available $myname | grep $myname | awk '{print $3}'`
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usedbychildren=`zfs get -p usedbychildren $myname | grep $myname | awk '{print $3}'`
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quota=`zfs get -p quota $myname | grep $myname | awk '{print $3}'`
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total=$((usedbydataset+usedbysnapshots+available+usedbychildren))
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if [ "$1" = "config" ]; then
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echo "graph_title zfs $myname"
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echo 'graph_order usedbydataset usedbysnapshots usedbychildren available total quota'
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echo "graph_args --base 1024 -r -l 0 --vertical-label Bytes --upper-limit $total"
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echo 'graph_info This graph shows how is used a zfs filesystems.'
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echo 'graph_category Zfs'
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echo 'graph_period second'
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echo 'usedbydataset.label Used'
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echo 'usedbydataset.draw AREA'
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echo 'usedbydataset.info Used space by Dataset'
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echo 'usedbydataset.colour FF0000'
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echo 'usedbysnapshots.label Snapshots'
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echo 'usedbysnapshots.draw STACK'
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echo 'usedbysnapshots.info Used space by snapshot'
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echo 'usedbysnapshots.colour 0000FF'
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echo 'usedbychildren.label Children'
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echo 'usedbychildren.draw STACK'
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echo 'usedbychildren.info Used space by children'
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echo 'usedbychildren.colour FFCC33'
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echo 'available.label Available'
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echo 'available.draw STACK'
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echo 'available.info Free space'
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echo 'available.colour 00FF00'
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echo 'total.label Total'
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echo 'total.draw LINE1'
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echo 'total.info Total'
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echo 'total.colour 000000'
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echo 'quota.label Quota'
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echo 'quota.draw LINE1'
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echo 'quota.info Quota'
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echo 'quota.colour 555555'
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exit 0
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fi
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echo "usedbydataset.value $usedbydataset"
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echo "usedbysnapshots.value $usedbysnapshots"
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echo "usedbychildren.value $usedbychildren"
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echo "available.value $available"
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echo "total.value $total"
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echo "quota.value $quota"
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exit 0
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