[Bug 1336855] Re: non-interactive grub updates for 12.04 break on AWS

[Ben Howard]

The reason for this happening is quite simple: /dev/xvda1 is only
considered as a potential grub device if /dev/xvda does not exist. Since
it does appear on HVM instances, the logic is invalid.

The following works:


ben at prongs:/work/patching/cloud-init/cloudinit/config$ bzr diff
=== modified file 'cloudinit/config/cc_grub_dpkg.py'
--- cloudinit/config/cc_grub_dpkg.py	2014-02-12 19:56:55 +0000
+++ cloudinit/config/cc_grub_dpkg.py	2014-07-02 17:00:47 +0000
@@ -46,7 +46,8 @@
             idevs_empty = "false"
         if idevs is None:
             idevs = "/dev/sda"
-            for dev in ("/dev/sda", "/dev/vda", "/dev/sda1", "/dev/vda1"):
+            for dev in ("/dev/sda", "/dev/vda", "/dev/xvda", "/dev/sda1",
+                        "/dev/vda1", "/dev/xvda1"):
                 if os.path.exists(dev):
                     idevs = dev
                     break


** Changed in: cloud-init (Ubuntu)
   Importance: High => Critical

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https://bugs.launchpad.net/bugs/1336855

Title:
  non-interactive grub updates for 12.04 break on AWS

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