From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gourmet.spamgourmet.com ([216.75.62.102]:59028 "EHLO gourmet8.spamgourmet.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754954AbbKRSxH (ORCPT ); Wed, 18 Nov 2015 13:53:07 -0500 Received: from spamgourmet by gourmet7.spamgourmet.com with local (Exim 4.80) (envelope-from ) id 1Zz7qt-00058i-10 for linux-btrfs@vger.kernel.org; Wed, 18 Nov 2015 18:53:07 +0000 To: linux-btrfs@vger.kernel.org From: linux-btrfs.tebulin@xoxy.net Subject: Kernel 3.19 and still "disk full" even though 'btrfs fi df" reports enough room left? Message-ID: <564CC90F.3060703@gmail.com> Date: Wed, 18 Nov 2015 19:53:03 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hello there! I'm stumbling over this regularly. I explicitly upgraded the kernel to avoid this, but it still occurs me every few months: $ touch foo touch: »foo“ kann nicht berührt werden: Auf dem Gerät ist kein Speicherplatz mehr verfügbar $ sudo btrfs fi df / Data, single: total=101.14GiB, used=78.99GiB System, DUP: total=32.00MiB, used=16.00KiB Metadata, DUP: total=9.00GiB, used=8.48GiB unknown, single: total=512.00MiB, used=832.00KiB Whut? Why? WTF? $ uname -a Linux neptun 3.19.0-31-generic #36~14.04.1-Ubuntu SMP Thu Oct 8 10:21:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux dmesg is empty. Resolution is to delete a whole bunch of btrfs subvolumes which are produced by apt-btrfs-snapshot. I run a sudo btrfs balance start -dusage=5 / afterwards as part of my regular "i have no clue what the heck is wrong with this; maybe it will help & mend my problem" process. This is annoying. Why is even btrfs own "disk free" utility lying to me? How to fix this? How to avoid this? How to get notified about this? - Ben P.S.: Just as user feedback: For /srv I'm using on the very same system ZFS since the very first day. With snapshots & all the fancy stuff like ZRAID-1, lz4, ... My number of Issues there: 0