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88 lines
2.4 KiB
Bash
Executable File
88 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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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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#
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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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# ** WARNING **
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# For now this plugin does not allow "_" in the name of a zpool or filesystems
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#
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myname=`basename $0 | sed 's/^zfs_fs_//g' | sed -e 's/_/\//g'`
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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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values=( $(zfs get -p usedbydataset,usedbychildren,usedbysnapshots,usedbyrefreservation,available,quota $myname | awk 'BEGIN {total=0;} { if( NR==1 ) next; } !/quota/ {total=total+$3;} {print $3} END{print total;}') )
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if [ "$1" = "config" ]; then
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echo <<EOF "graph_title zfs $myname
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graph_order usedbydataset usedbychildren usedbysnapshots usedbyrefreservation available total quota
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graph_args --base 1024 -r -l 0 --vertical-label Bytes
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graph_info This graph shows how is used a zfs filesystems.
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graph_category fs
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graph_period second
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usedbydataset.label UsedByDataset
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usedbydataset.draw AREA
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usedbydataset.info Used space by Dataset
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usedbydataset.colour FF0000
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usedbychildren.label UsedByChildren
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usedbychildren.draw STACK
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usedbychildren.info Used space by children
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usedbychildren.colour FFCC33
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usedbysnapshots.label UsedBySnapshots
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usedbysnapshots.draw STACK
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usedbysnapshots.info Used space by snapshot
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usedbysnapshots.colour 0000FF
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usedbyrefreservation.label Usedbyrefreservation
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usedbyrefreservation.draw STACK
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usedbyrefreservation.info Used space by Ref Reservation
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usedbyrefreservation.colour 33CCFF
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available.label Available
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available.draw STACK
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available.info Free space
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available.colour 00FF00
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total.label Total
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total.draw LINE1
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total.info Total
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total.colour 000000
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quota.label Quota
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quota.draw LINE1
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quota.info Quota
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quota.colour 555555"
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EOF
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exit 0
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fi
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echo <<EOF "usedbydataset.value ${values[0]}
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usedbysnapshots.value ${values[2]}
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usedbychildren.value ${values[1]}
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usedbyrefreservation.value ${values[3]}
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available.value ${values[4]}
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total.value ${values[6]}
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quota.value ${values[5]}"
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EOF
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exit 0
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