[Bug 1060404] Re: update-grub runs and fails in containers

[Colin Watson]

** Changed in: grub2 (Ubuntu)
       Status: Confirmed => Fix Committed

** Changed in: grub2 (Ubuntu)
     Assignee: (unassigned) => Colin Watson (cjwatson)

** Also affects: grub2 (Ubuntu Quantal)
   Importance: High
     Assignee: Colin Watson (cjwatson)
       Status: Fix Committed

** Also affects: upstart (Ubuntu Quantal)
   Importance: Undecided
       Status: Invalid

** Also affects: lxc (Ubuntu Quantal)
   Importance: High
       Status: Fix Released

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Title:
  update-grub runs and fails in containers

Status in “grub2” package in Ubuntu:
  Fix Committed
Status in “lxc” package in Ubuntu:
  Fix Released
Status in “upstart” package in Ubuntu:
  Invalid
Status in “grub2” source package in Quantal:
  Fix Committed
Status in “lxc” source package in Quantal:
  Fix Released
Status in “upstart” source package in Quantal:
  Invalid

Bug description:
  If grub is installed in a container (as happens, for instance, with
  the ubuntu-cloud template) then an update of grub or linux-image will
  cause update-grub to be run.  It tries, finds it can't access the root
  device, fails, and causes the update to fail.

  It would be better for update-grub to detect that it is in a container
  and simply exit 0, so that the apt-get can succeed.  I'm attaching a
  debdiff which does that.

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