From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnd Hannemann <arnd@arndnet.de>
Subject: compressed btrfs "No space left on device"
Date: Mon, 14 Nov 2011 15:57:30 +0100
Message-ID: <4EC12C5A.2070304@arndnet.de>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-15
To: linux-btrfs@vger.kernel.org
Return-path: <linux-btrfs-owner@vger.kernel.org>
List-ID: <linux-btrfs.vger.kernel.org>

Hi,

I'm using btrfs for my /usr/share/ partition and keep getting the following error
while installing a debian package which should take no more than 228 MB:

Unpacking texlive-fonts-extra (from .../texlive-fonts-extra_2009-10ubuntu1_all.deb) ...
 dpkg: error processing /var/cache/apt/archives/texlive-fonts-extra_2009-10ubuntu1_all.deb (--unpack):
 unable to install new version of `/usr/share/texmf-texlive/fonts/type1/public/allrunes/frutlt.pfb': No space left on device


However df reports plenty of available space:

/dev/mapper/vg0-usr_share
                      5.0G  1.5G  2.5G  37% /usr/share


I already extended /dev/mapper/vg0-usr_share from 4G to 5G and ran defrag and balance on it with no luck.
I'm using ubuntu 11.10 on amd64 with the ubuntu 3.0.0 kernel.

btrfs reports to use "zlib compression".

Is this a known problem with compressed btrfs?

Best regards
Arnd