From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.web.de ([212.227.15.14]:58752 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752146AbaBPN6M (ORCPT ); Sun, 16 Feb 2014 08:58:12 -0500 Received: from frosties.localnet ([149.172.224.32]) by smtp.web.de (mrweb103) with ESMTPSA (Nemesis) id 0MeBHO-1WeqHX2eWE-00Pugo for ; Sun, 16 Feb 2014 14:58:09 +0100 Received: from mrvn by frosties.localnet with local (Exim 4.80) (envelope-from ) id 1WF2ES-0000Ot-Su for linux-btrfs@vger.kernel.org; Sun, 16 Feb 2014 14:58:08 +0100 Date: Sun, 16 Feb 2014 14:58:08 +0100 From: Goswin von Brederlow To: linux-btrfs@vger.kernel.org Subject: ENOSPC with 270GiB free Message-ID: <20140216135808.GA1491@frosties> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi, I'm getting a ENOSPC error from btrfs despite there still being plenty of space left: % df -m /mnt/nas3 Filesystem 1M-blocks Used Available Use% Mounted on /dev/mapper/nas3-a 19077220 18805132 270773 99% /mnt/nas3 % btrfs fi show Label: none uuid: 4b18f84e-2499-41ca-81ff-fe1783c11491 Total devices 1 FS bytes used 17.91TiB devid 1 size 18.19TiB used 17.94TiB path /dev/mapper/nas3-a Btrfs v3.12 % btrfs fi df Data, single: total=17.89TiB, used=17.88TiB System, DUP: total=32.00MiB, used=1.92MiB Metadata, DUP: total=25.50GiB, used=24.89GiB As you can see there are still 270GiB free and plenty of block groups free on the device too. So why isn't btrfs allocating a new block group to store more data? MfG Goswin