This bug was fixed in the package btrfs-tools - 0.19+20120328-2ubuntu1

---------------
btrfs-tools (0.19+20120328-2ubuntu1) quantal; urgency=low

  [ Philip Muškovac ]
  * Merge from debian (LP: #894456), remaining changes:
    - 07-allow-fsck-options.patch (updated):
      + Make fsck.btrfs not fail when called with fsck options.
    - btrfs-tools-udeb.install:
      + ship btrfs in the udeb.
    - btrfs-tools.links:
      + Add btrfsck -> fsck.btrfs symlink

  [ Dmitrijs Ledkovs ]
  * Dropped changes:
    - debian/patches/04-werror.patch - included upstream
    - debian/patches/05-fix-ld.patch - applied in debian
    - 09-unused-warnings.patch - included upstream

btrfs-tools (0.19+20120328-2) unstable; urgency=low

  * Updating compression handling for udeb with newer debhelper (Closes:
    #673283).

btrfs-tools (0.19+20120328-1) unstable; urgency=low

  * Including ioctl.h in btrfs-tools (Closes: #658471).
  * Merging upstream version 0.19+20120328.
  * Updating to debhelper version 9.
  * Updating to standards version 3.9.3.
  * Updating copyright file machine-readable format version 1.0.
  * Shortening manual build targets now that upstreams makefile has been
    updated.
  * Adding patch from Donald Gordon <email address hidden> to correct getopt
    (Closes: #665434).

btrfs-tools (0.19+20111105-2) unstable; urgency=low

  * Using btrfs instead of btrfsctl in initramfs (Closes: #650614).

btrfs-tools (0.19+20111105-1) unstable; urgency=low

  * Switching architecture fields to linux-any.
  * Adding patch to call gzip with full path when creating manpages to
    fix FTBFS on squeeze.
  * Using compression level 9 also for binary packages.
  * Merging upstream version 0.19+20111105.
  * Updating year in copyright file.
  * Sorting overrides in rules alphabetically.
  * Prefixing variables in rules to avoid clashes.
  * Rediffing labels.patch.
  * Rediffing ftbfs.patch.
  * Rediffing linker.patch.
  * Removing gcc-4.6.patch, not required anymore.
  * Renumbering patches.
  * Avoid polluting namespace by prefixing some tools with btrfs.
  * Updating list of additional tools to be built.

btrfs-tools (0.19+20101101-2) unstable; urgency=low

  * Updating maintainer and uploaders fields.
  * Removing vcs fields.
  * Removing references to my old email address.
  * Updating year in copyright file.
  * Updating to standards version 3.9.2.
  * Compacting copyright file.
  * Dropping btrfs.modules, went into initramfs-tools (Closes: #612642).
  * Adding patch from Luk Claes <email address hidden> to fix FTBFS with --no-
    add-needed (Closes: #554059).
  * Adding patch from Jonathan Nieder <email address hidden> to fix FTBFS
    with gcc-4.6 (Closes: #616296).
  * Simplfying build and install overrides in rules.
  * Applying slightly modified patch from Jonathan Nieder
    <email address hidden> to fix CFLAGS handling in rules, see #616296.

btrfs-tools (0.19+20101101-1) experimental; urgency=low

  * Merging upstream version 0.19+20101101.
  * Switching to source format 3.0 (quilt).

btrfs-tools (0.19+20100909-2) experimental; urgency=low

  * Update references to btrfs-tools instead of btrfs-progs (upstream name)
    in manpages (Closes: #599111).
  * Removing warnings about experimental status.
  * Updating package to debhelper 8.

btrfs-tools (0.19+20100909-1) experimental; urgency=low

  * Correcting credits for glibc.patch in patch file and changelog entry
    to David Sugar <email address hidden>.
  * Updating standards version to 3.9.0.
  * Merging upstream version 0.19+20100909.
  * Removing glibc.patch, merged upstream.
  * Updating standards version to 3.9.1.
 -- Dmitrijs Ledkovs <email address hidden>   Thu, 17 May 2012 15:57:53 +0100