[Bug 563895] Re: grub2 fails to boot or install when an LVM snapshot exists

[Launchpad Bug Tracker]

This bug was fixed in the package grub2 - 1.98-1ubuntu13

---------------
grub2 (1.98-1ubuntu13) lucid-proposed; urgency=low

  [ Colin Watson ]
  * Handle partition devices without corresponding disk devices
    (LP: #623609).

  [ Ken Stailey ]
  * Backport upstream patch to skip LVM snapshots (LP: #563895).
 -- Colin Watson <cjwatson at ubuntu.com>   Fri, 20 Jan 2012 12:08:36 +0000

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

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https://bugs.launchpad.net/bugs/563895

Title:
  grub2 fails to boot or install when an LVM snapshot exists

Status in “grub2” package in Ubuntu:
  Fix Released
Status in “grub2” source package in Lucid:
  Fix Released
Status in “grub2” package in Debian:
  Fix Released

Bug description:
  SRU Justification:

  Impact: When /boot and / are in an LVM VG and a snapshot is made of an
  LVM LV in that VG the system will not boot and grub can not be
  modified (updated, reinstalled) until all snapshots are removed.

  Testcase:

  Binary package hint: grub2

  Steps to reproduce:

  - (Lucid beta2 installed from CD)
  - Take a snapshot of any volume
  - on reboot:
    error: fd0 read error.
    error: no such disk.
    grub rescue>
  - Use the rescue cd to get a root shell
  - Remove the snapshot and reboot
  Now, the system boots. Create a new snapshot to repeat.

  The system has 2 SATA disks in mdadm RAID1 configuration with 1 lvm
  volume on top and no 'normal' partitions.

  Also see Comment #6
  https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/563895/comments/6

  Fix: See debdiff patch
  https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/563895/+attachment/2589269/+files/grub2_1.98-1ubuntu12.1.debdiff

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