Support specifying an extent size when creating a volume group

lib/puppet/provider/volume_group/lvm.rb

@@ -44,7 +44,12 @@ def self.get_logical_volume_properties(volume_groups_line)
   end
 
   def create
-    vgcreate(@resource[:name], *@resource.should(:physical_volumes))
+    vgcreate_args = [@resource[:name], *@resource.should(:physical_volumes)]
+    extent_args = @resource[:extent_size].nil? ? [] : ['-s', @resource[:extent_size]]
+
+    vgcreate_args.append(*extent_args)
+
+    vgcreate(*vgcreate_args)
   end
 
   def destroy

lib/puppet/type/volume_group.rb

@@ -10,6 +10,10 @@
     isnamevar
   end
 
+  newparam(:extent_size) do
+    desc 'The physical extent size. Uses OS default if not provided. Only applicable on Linux.'
+  end
+
   newproperty(:physical_volumes, array_matching: :all) do
     desc "The list of physical volumes to be included in the volume group; this
          will automatically set these as dependencies, but they must be defined elsewhere