Add new parameter to prevent grub-mkconfig being run

lib/puppet/provider/grub_config/grub2.rb

@@ -101,6 +101,9 @@ def flush
     fail("Cannot find grub.cfg location to use with grub-mkconfig") unless cfg
 
     super
-    mkconfig "-o", cfg
+
+    if mkconfig
+      mkconfig "-o", cfg
+    end
   end
 end

lib/puppet/provider/grub_menuentry/grub2.rb

@@ -536,7 +536,9 @@ def flush
           FileUtils.rm_f(legacy_target)
 
           # Need to rebuild the full grub config if we removed a legacy target
-          grub2_mkconfig
+          if mkconfig
+            grub2_mkconfig
+          end
         end
       end
     else

lib/puppet/provider/grub_user/grub2.rb

@@ -284,7 +284,9 @@ def flush
       FileUtils.chmod(0755, resource[:target])
     end
 
-    mkconfig "-o", grub2_cfg_path
+    if mkconfig
+      mkconfig "-o", grub2_cfg_path
+    end
   end
 
   private

lib/puppet/provider/kernel_parameter/grub2.rb

@@ -182,8 +182,11 @@ def flush
     fail("Cannot find grub.cfg location to use with grub-mkconfig") unless cfg
 
     super
-    cfg.each {|c|
-      mkconfig "-o", c
-    }
+
+    if mkconfig
+      cfg.each {|c|
+        mkconfig "-o", c
+      }
+    end
   end
 end

lib/puppet/type/grub_user.rb

@@ -78,6 +78,13 @@
     end
   end
 
+  newparam(:mkconfig, :boolean => true) do
+    desc "Whether grub(2)-mkconfig should be ran after updating the GRUB configuration"
+
+    newvalues(:true, :false)
+    defaultto(:true)
+  end
+
   newproperty(:purge, :boolean => true) do
     desc <<-EOM
       Purge all unmanaged users.

lib/puppet/type/kernel_parameter.rb

@@ -32,6 +32,13 @@
     defaultto :all
   end
 
+  newparam(:mkconfig, :boolean => true) do
+    desc "Whether grub(2)-mkconfig should be ran after updating the GRUB configuration"
+
+    newvalues(:true, :false)
+    defaultto(:true)
+  end
+
   autorequire(:file) do
     self[:target]
   end