Installing 12.04b1 with btrfs root filesystem crashes ubiquity

[Tessa]

This was a test install in a VirtualBox 4.1.10 VM, using the latest 12.04 beta installer ISO. Two partitions were created:

/dev/sda1 - 4GB - swap
/dev/sda2 - 16GB - btrfs - /

Installer got most of the way finished, then crashed.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.9.23
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.93-0ubuntu2
Architecture: amd64
CasperVersion: 1.305
Date: Thu Mar 29 09:33:21 2012
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --
LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
ProcEnviron:
 LANGUAGE=en_CA.UTF-8
 TERM=unknown
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Mar 29 16:31:06 ubuntu plugininstall.py: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
Mar 29 16:31:06 ubuntu plugininstall.py:

[Brian Murray (brian-murray)]

There was an error when trying to install one of the packages from the archive:

Mar 29 16:30:25 ubuntu ubiquity: dpkg-deb (subprocess): data: internal bzip2 read error: 'DATA_ERROR'
Mar 29 16:30:25 ubuntu ubiquity: dpkg-deb: error: subprocess <decompress> returned error exit status 2
Mar 29 16:30:25 ubuntu ubiquity: dpkg: error processing /target/var/cache/apt/archives/libreoffice-help-en-gb_1%3a3.5.1-1ubuntu1_all.deb (--unpack):
Mar 29 16:30:25 ubuntu ubiquity: short read on buffer copy for backend dpkg-deb during `./usr/share/libreoffice/help/en-GB/shared.jar'

Your install might work out better if you choose not to install updates during the install process.