zpool_capacity: Added fragmentation % graph

Added fragmentation % graph

plugins/zfs/zpool_capacity

@@ -8,6 +8,7 @@
 
   These functions are implemented:
     capacity      : to monitor zpool capacity %
+    fragmentation : to monitor zpool fragmantation %
     allocated     : to monitor zpool allocated bytes
     dedup         : to monitor zpool dedup and compress ratio
 
@@ -34,6 +35,8 @@
 
   K.Cima https://github.com/shakemid
 
+  Fragmentation graph by https://github.com/rantal
+
 =head1 LICENSE
 
   GPLv2
@@ -54,7 +57,7 @@ set -o nounset
 
 # Global variables
 plugin_name=zpool_capacity
-functions='capacity allocated dedup'
+functions='capacity fragmentation allocated dedup'
 zpool_cmd=/sbin/zpool
 zfs_cmd=/sbin/zfs
 
@@ -92,6 +95,20 @@ preconfig() {
                 ${p} GAUGE LINE2 ${p}"
         done
         ;;
+    fragmentation)
+        global_attr="
+            graph_title ZFS storage pool - Fragmentation
+            graph_category fs
+            graph_args --base 1000 --lower-limit 0 --upper-limit 100
+            graph_vlabel % fragmentation
+            graph_info ZFS storage pool - Fragmentation
+        "
+        for p in $pool_list
+        do
+            data_attr="${data_attr}
+                ${p} GAUGE LINE2 ${p}"
+        done
+        ;;
     allocated)
         global_attr="
             graph_title ZFS storage pool - Allocated bytes
@@ -168,6 +185,9 @@ get_stats() {
     capacity)
         "$zpool_cmd" list -H -o name,capacity | sed 's/%$//'
         ;;
+    fragmentation)
+        "$zpool_cmd" list -H -o name,fragmentation | sed 's/%$//'
+        ;;
     allocated)
         ( "$zpool_cmd" list -H -o name,allocated \
           | awk '{ print $1"_allocated", $2 }'