From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:22256 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932474AbbCXRfI (ORCPT ); Tue, 24 Mar 2015 13:35:08 -0400 Date: Tue, 24 Mar 2015 13:34:59 -0400 From: Chris Mason Subject: Re: WARNING at fs/btrfs/super.c:260 __btrfs_abort_transaction (error -17) To: Sophie Dexter CC: Message-ID: <1427218499.30561.0@mail.thefacebook.com> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Tue, Mar 24, 2015 at 9:43 AM, Sophie Dexter wrote: > On 20/03/2015 15:19, Sophie Dexter wrote: >> I'm given to understand that this is the right place to report a >> btrfs >> problem, I apologise if not :-( >> >> I have been using my router as a simple NFS NAS for around 2 years >> with an ext3 formatted 2 TB Western Digital 2.5" USB Passport disk. I >> have been slowly moving to BTRFS and thought it about time to convert >> this disk too but unfortunately BTRFS is unreliable on my router :-(. >> It doesn't take long for an error to happen causing a 'ro' remount. >> However the disk is unreadable after the remount, both for NFS and >> locally. Rebooting the router seems to be the only way to access the >> disk again. >> >> I also have a 1 GB swap partition on the disk although swap doesn't >> appear to be a factor as the problem occurs whether or not swap is >> enabled (this report is without swap). >> >> I used my laptop to convert the fs to btrfs, not my router. My laptop >> has Fedora 21 with 3.18 kernel and tools. No problems are found when >> I >> use my laptop to check and scrub the disk (i.e. with the disk >> connected directly to my laptop). You have great timing, there are two reports of a very similar abort with 4.0-rc5, but your report makes it clear these are not a regression from 4.0-rc4. Are you able to run btrfsck on this filesystem? I'd like to check for metadata inconsistencies. -chris