disk usage plugin for VMs

1 files changed, 51 insertions, 0 deletions

diff --git a/munin/vm_du_ b/munin/vm_du_
new file mode 100755
index 0000000..5564c44
--- /dev/null
+++ b/munin/vm_du_
@@ -0,0 +1,51 @@
+#!/bin/bash
+# -*- sh -*-
+
+MUNIN_LIBDIR=${MUNIN_LIBDIR:-/usr/share/munin}
+. $MUNIN_LIBDIR/plugins/plugin.sh
+
+BASE=/srv/vmstore
+
+VM=${0##*vm_du_}
+#VM=${VM//_/.}
+
+case $1 in
+    autoconf)
+        if [[ -d "$BASE" ]]; then
+            echo yes
+            exit 0
+        else
+            echo "no ($BASE not found)"
+            exit 0
+        fi
+        ;;
+    suggest)
+        if [[ -d "$BASE" ]]; then
+            find "$BASE" -mindepth 1 -maxdepth 1 -type d -a ! -name lost+found -printf '%f\n' # | tr . _
+        fi
+        exit 0
+        ;;
+    config)
+        echo "graph_title disk usage VM $VM"
+        echo 'graph_args --base 1024 --lower-limit 0'
+        echo 'graph_vlabel bytes'
+        echo 'graph_category disk'
+        echo 'graph_total Total'
+
+        find "$BASE/$VM" -mindepth 1 -maxdepth 1 -type f |
+        while read fn; do
+            label="${fn##*/}"
+            label=${label//./_}
+            name=${label//-/_}
+            echo "$name.label $label"
+            echo "$name.cdef $name,1024,*"
+        done
+        exit 0
+        ;;
+esac
+
+find "$BASE/$VM" -mindepth 1 -maxdepth 1 -type f -printf '%f %k\n' |
+while read fn du; do
+  fn=${fn//[.-]/_}
+  echo "$fn.value $du"
+done