[Bug 887836] Re: update-grub does not create btrfs menuentry in grub.cfg

[bitinerant]

I believe this bug explains why I can't boot from sda1.  I installed a
'normal' Ubuntu 12.04 with Btrfs on sda1 and it worked fine.  I let the
installer create the partition table; GParted says it is 'msdos'.  I
then installed a crypt-luks Ubuntu 12.04 with /boot on sda2 (Ext2),
encrypted swap on sda3, and root on sda4 (Btrfs).  The 'update-grub'
command finds my encrypted installation and it works fine, but it never
finds the original sda1 Btrfs partition and I haven't been able to boot
from it since I installed the second Ubuntu.

Output of 'fdisk -l' and 'update-grub' is attached.  Martin, is there
anything else you'd like to know about an effected system?  Is there a
work-around?

** Attachment added: "outputs.log"
   https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/887836/+attachment/3262812/+files/outputs.log

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https://bugs.launchpad.net/bugs/887836

Title:
  update-grub does not create btrfs menuentry in grub.cfg

Status in “os-prober” package in Ubuntu:
  Incomplete

Bug description:
  Hi,

  I have noticed that update-grub have never been generating menuentry in grub.cfg for btrfs ubuntu oneiric 64bit instance. This happens when I run update-grub on another ubuntu instance , does not matter if ext4 or btrfs.
  (I have to manually change 40_custom for new installed kernels )
  Could you confirm if it is bug or I messed up something ?

  thank you,
  regards,
  Martin
  --- 
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  DistroRelease: Ubuntu 11.10
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  NonfreeKernelModules: fglrx
  Package: os-prober 1.49ubuntu1
  PackageArchitecture: amd64
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 3.0.0-17.30~pre201203010400-generic 3.0.22
  Tags:  oneiric
  Uname: Linux 3.0.0-17-generic x86_64
  UpgradeStatus: Upgraded to oneiric on 2011-10-15 (141 days ago)
  UserGroups: adm admin audio backup cdrom clamav dialout disk games kvm libuuid lpadmin plugdev proxy pulse pulse-access sambashare syslog users utmp vboxusers video www-data

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