[Bug 683890] Re: config-grub does not run

[Scott Moser]

** Description changed:

  Binary package hint: cloud-init
  
  In testing bug 671103, I realised that the 'config-grub' code that was
  added is not actually invoked on boot.  As a result, the changes will
  not seed grub2 correctly.
  
  What should happen on first boot is that 'h_config_grub' in
  'CloudConfig.py' should run and 'grub-pc/install_devices' and 'grub-
  pc/install_devices_empty' should get seeded.
  
  Unfortunately, the fix added doesn't get that code invoked, and as a
  result, these values are not seeded.
  
  What we see is:
  $ debconf-get-selections  2>/dev/null | grep grub-pc/install
  grub-pc grub-pc/install_devices_failed  boolean false
  grub-pc grub-pc/install_devices multiselect
  grub-pc grub-pc/install_devices_disks_changed   multiselect
  grub-pc grub-pc/install_devices_empty   boolean false
  
  What we *should* see on EC2 is:
  $ debconf-get-selections  2>/dev/null | grep grub-pc/install
  grub-pc grub-pc/install_devices_failed  boolean false
  grub-pc grub-pc/install_devices_disks_changed   multiselect
  grub-pc grub-pc/install_devices_empty   boolean true
- grub-pc grub-pc/install_devices string 
+ grub-pc grub-pc/install_devices string
  
  Without those variables set, the user will be prompted on grub update.
+ 
+ 
+ ===== SRU Information =====
+ * impact of the bug: this bug in cloud-init does not deliver a fix for bug 683379 that I hoped it would.  The result is that on upgrade of grub-pc, the user is prompted to verify they do not need to install grub even if they have DEBIAN_FRONTEND=noninteractive.
+ * how the bug has been addressed: In maverick, the same code runs in a different way.  When I pulled the change back to lucid, i didn't get the code invoked.
+ * minimal patch:  The changes are available in my branch at [1], the diff from that which entered -proposed under bug 671103 can be seen from tip of the branch to revision 19. [2].
+ * instructions on how to reproduce the bug:
+   * boot instance on ec2, upgrade grub-pc.  The user will be prompted as to if they want to continue without installing grub even though grub-pc is of no use on EC2.
+   There is *no* potential for regression on running systems, only on systems where a user chooses to install grub-legacy-ec2 *and* modifies their instance to use pv-grub.
+ --
+ [1] https://code.launchpad.net/~smoser/ubuntu/lucid/cloud-init/lucid-kernel-upgrades
+ [2] http://bazaar.launchpad.net/~smoser/ubuntu/lucid/cloud-init/lucid-kernel-upgrades/revision/20?remember=19&compare_revid=19
+ =====

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config-grub does not run
https://bugs.launchpad.net/bugs/683890
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