From f26076574e59abcab513137d6f702914181ba836 Mon Sep 17 00:00:00 2001
From: Sascha Peilicke <saschpe@suse.de>
Date: Mon, 18 Mar 2013 14:33:49 +0100
Subject: [PATCH] Add grub2 support

Change-Id: I30dda8e5f503b353e103d50242b51f247788076a
---
 recipes/libvirt.rb | 27 ++++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/recipes/libvirt.rb b/recipes/libvirt.rb
index cfefcef6..353c03a6 100644
--- a/recipes/libvirt.rb
+++ b/recipes/libvirt.rb
@@ -26,8 +26,7 @@ platform_options["libvirt_packages"].each do |pkg|
   end
 end
 
-def set_boot_kernel_and_trigger_reboot(flavor='default')
-  # only default and xen flavor is supported by this helper right now
+def set_grub_default_kernel(flavor='default')
   default_boot, current_default = 0, nil
 
   # parse menu.lst, to find boot index for selected flavor
@@ -51,9 +50,31 @@ def set_boot_kernel_and_trigger_reboot(flavor='default')
 
   # change default option for /boot/grub/menu.lst
   unless current_default.eql?(default_boot)
-    puts "changed grub default to #{default_boot}"
+    ::Chef::Log.info("Changed grub default to #{default_boot}")
     %x[sed -i -e "s;^default.*;default #{default_boot};" /boot/grub/menu.lst]
   end
+end
+
+def set_grub2_default_kernel(flavor='default')
+  boot_entry = "'openSUSE GNU/Linux, with Xen hypervisor'"
+  if system("grub2-set-default #{boot_entry}")
+    ::Chef::Log.info("Changed grub2 default to #{boot_entry}")
+  else
+    ::Chef::Application.fatal!(
+      "Unable to change grub2 default to #{boot_entry}")
+  end
+end
+
+def set_boot_kernel_and_trigger_reboot(flavor='default')
+  # only default and xen flavor is supported by this helper right now
+  if File.exists?("/boot/grub/menu.lst")
+    set_grub_default_kernel(flavor)
+  elsif File.exists?("/etc/default/grub")
+    set_grub2_default_kernel(flavor)
+  else
+    ::Chef::Application.fatal!(
+      "Unknown bootloader. Could not change boot kernel.")
+  end
 
   # trigger reboot through reboot_handler, if kernel-$flavor is not yet
   # running