[Bug 1104463] Re: /etc/kernel/postinst.d/zz-update-grub triggers a grub update in lxc containers

Fri Jan 25 00:42:11 UTC 2013

I fixed this as the other half of bug 1060404, hence the changelog.

grub2 (2.00-12ubuntu1) raring; urgency=low

  * Resynchronise with Debian.  Remaining changes:
    - Adjust for default Ubuntu boot options ("quiet splash").
    - Default to hiding the menu; holding down Shift at boot will show it.
    - Set a monochromatic theme and an appropriate background for Ubuntu.
    - Apply Ubuntu GRUB Legacy changes to legacy update-grub script.
    - Remove "GNU/Linux" from default distributor string.
    - Add crashkernel option.
    - Bypass menu unless other OSes are installed or Shift is pressed.
    - Allow Shift to interrupt 'sleep --interruptible'.
    - Reduce visual clutter in normal mode.
    - Remove verbose messages printed before reading configuration.
    - Suppress kernel/initrd progress messages, except in recovery mode.
    - Show the boot menu if the previous boot failed.
    - Adjust upgrade version checks for Ubuntu.
    - Suppress "GRUB loading" message unless Shift is held down.
    - Check hardware support before using gfxpayload=keep.
    - Set vt.handoff=7 for smooth handoff to kernel graphical mode.
    - In recovery mode, add nomodeset to the Linux kernel arguments, and
      remove the 'set gfxpayload=keep' command.
    - Skip Windows os-prober entries on Wubi systems, and suppress the menu
      by default if those are the only other-OS entries.
    - Handle probing striped DM-RAID devices.
    - Disable cursor as early as possible in grub_main.
    - Apply patch from Fedora to add a "linuxefi" loader.
    - Automatically call linuxefi from linux when necessary.
    - On amd64, add raw-uefi custom upload tarballs for signing.
    - Generate configuration for signed UEFI kernels if available.
    - Install signed images if UEFI Secure Boot is enabled.
    - Output a menu entry for firmware setup on UEFI FastBoot systems.
    - Stop using the /usr/share/images/desktop-base/desktop-grub.png
      alternative as the fallback background.

 -- Colin Watson <cjwatson at ubuntu.com>  Fri, 25 Jan 2013 00:36:50 +0000

grub2 (2.00-12) experimental; urgency=low

  * Silence output from running-in-container.
  * Also skip update-grub when running in a container (LP: #1060404).

 -- Colin Watson <cjwatson at debian.org>  Thu, 24 Jan 2013 23:21:48 +0000

** Changed in: grub2 (Ubuntu)
       Status: New => Fix Released

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

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https://bugs.launchpad.net/bugs/1104463

Title:
  /etc/kernel/postinst.d/zz-update-grub triggers a grub update in lxc
  containers

Status in “grub2” package in Ubuntu:
  Fix Released

Bug description:
  Before anyone points it out, this is NOT a duplicate of bug 1060404,
  just a different but extremely similar problem :)

  So I'm doing 12.10 => 13.04 desktop upgrade testing in a container.
  That means setting up a full dekstop 12.10 system, including grub and
  kernel, then dist-upgrading that to 13.04.

  In the past, this used to fail because of bug 1060404 but now that it's been fixed, I'm getting into a different problem bcause of zz-update-grub calling update-grub, bypassing the check added to grub's postinst and causing a similar error:
  ===
  Setting up linux-image-3.8.0-1-generic (3.8.0-1.5) ...
  Running depmod.
  update-initramfs: deferring update (hook will be called later)
  Examining /etc/kernel/postinst.d.
  run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.8.0-1-generic /boot/vmlinuz-3.8.0-1-generic
  run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.8.0-1-generic /boot/vmlinuz-3.8.0-1-generic
  update-initramfs: Generating /boot/initrd.img-3.8.0-1-generic
  cryptsetup: WARNING: could not determine root device from /etc/fstab
  run-parts: executing /etc/kernel/postinst.d/pm-utils 3.8.0-1-generic /boot/vmlinuz-3.8.0-1-generic
  run-parts: executing /etc/kernel/postinst.d/update-notifier 3.8.0-1-generic /boot/vmlinuz-3.8.0-1-generic
  run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.8.0-1-generic /boot/vmlinuz-3.8.0-1-generic
  /usr/sbin/grub-probe: error: failed to get canonical path of /dev/mapper/castiana-home.
  run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 1
  Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-3.8.0-1-generic.postinst line 1010.
  dpkg: error processing linux-image-3.8.0-1-generic (--configure):
   subprocess installed post-installation script returned error exit status 2
  No apport report written because MaxReports is reached already
  dpkg: dependency problems prevent configuration of linux-image-extra-3.8.0-1-generic:
   linux-image-extra-3.8.0-1-generic depends on linux-image-3.8.0-1-generic; however:
    Package linux-image-3.8.0-1-generic is not configured yet.

  dpkg: error processing linux-image-extra-3.8.0-1-generic (--configure):
   dependency problems - leaving unconfigured
  No apport report written because MaxReports is reached already
  dpkg: dependency problems prevent configuration of linux-image-generic:
   linux-image-generic depends on linux-image-3.8.0-1-generic; however:
    Package linux-image-3.8.0-1-generic is not configured yet.
   linux-image-generic depends on linux-image-extra-3.8.0-1-generic; however:
    Package linux-image-extra-3.8.0-1-generic is not configured yet.

  dpkg: error processing linux-image-generic (--configure):
   dependency problems - leaving unconfigured
  dpkg: dependency problems prevent configuration of linux-generic:
   linux-generic depends on linux-image-generic (= 3.8.0.1.14); however:No apport report written because MaxReports is reached already

    Package linux-image-generic is not configured yet.

  dpkg: error processing linux-generic (--configure):
   dependency problems - leaving unconfigured
  No apport report written because MaxReports is reached already
  Errors were encountered while processing:
   linux-image-3.8.0-1-generic
   linux-image-extra-3.8.0-1-generic
   linux-image-generic
   linux-generic
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  ===

  Proposed ways of fixing this as discussed in #ubuntu-devel include:
   - Make update-grub exit 0 if running-in-container returns 0
   - Patch just zz-update-grub with a similar check
   - Make the scripts check for the presence of the device and only then attempt to read/write to it (but limit that check to containers)

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