btrfs cannot boot if / and /home are separate

[Eric Appleman]

When installing Ubuntu to a btrfs-formatted / and a /home of any formatting, GRUB will not install properly to /dev/sdx or permit booting.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: btrfs-tools (not installed)
ProcVersionSignature: Ubuntu 3.0.0-5.6-genusername 3.0.0-rc7
Uname: Linux 3.0.0-5-generic i686
Architecture: i386
Date: Tue Jul 19 21:49:27 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110717)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 LC_MESSAGES=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: btrfs-tools
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mark East (feasty)]

This is also present in 12.04 alpha

[Eric Appleman (erappleman)]

Might be relevant

"When installing Ubuntu in one large btrfs-Partition without an extra boot-partition, take care to keep about 1 Mib space free at the beginning of the disk. This is possible using the partition manager in the Ubuntu installer. When there is not this space, the installer fails at the end when trying to install Grub! "

[Gary M (garym)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 774217, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.