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60600d6b63
zfs list might list a bunch of transient snapshots if `zpool listsnapshots=on` and something like zfs-auto-snapshot is used. It's also not useful to graph them since they're unchanging in time, and the parent volume is graphed anyway. Limit zfs list to "filesystem,volume" instead of "all" including snapshots
99 lines
2.8 KiB
Bash
Executable file
99 lines
2.8 KiB
Bash
Executable file
#!/bin/bash
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#
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# Plugin to monitor ZFS Filesystems
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# Author: Adam Michel (elfurbe@furbism.com)
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# Description:
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# This is an extension of the zfs_fs plugin
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# modified as a multigraph to graph all zfs
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# filesystems it can find
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#
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# Tested on Ubuntu-14.04
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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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#%# family=auto
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. "$MUNIN_LIBDIR/plugins/plugin.sh"
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need_multigraph()
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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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if [ "$1" = "config" ]; then
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for i in `zfs list -Hp -t filesystem,volume | awk '{print $1}'`; do
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values=( $(zfs get -p usedbydataset,usedbychildren,usedbysnapshots,usedbyrefreservation,available,quota $i | awk 'BEGIN {total=0;} { if( NR==1 ) next; } !/quota/ {total=total+$3;} {print $3} END{print total;}') )
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fsname=$(clean_fieldname $(echo "$i" | sed 's/\//__/g'))
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echo <<EOF "multigraph zfs_list_$fsname
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graph_title $fsname usage
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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 --upper-limit ${values[6]}
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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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done
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exit 0
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fi
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for i in `zfs list -Hp -t filesystem,volume | awk '{print $1}'`; do
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values=( $(zfs get -p usedbydataset,usedbychildren,usedbysnapshots,usedbyrefreservation,available,quota $i | awk 'BEGIN {total=0;} { if( NR==1 ) next; } !/quota/ {total=total+$3;} {print $3} END{print total;}') )
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fsname=$(clean_fieldname $(echo "$i" | sed 's/\//__/g'))
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if [ ${values[5]} = "-" ]; then
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quota=0
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else
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quota=${values[5]}
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fi
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echo <<EOF "multigraph zfs_list_$fsname
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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 $quota"
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EOF
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done
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exit 0
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