From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f180.google.com ([209.85.212.180]:37097 "EHLO mail-wi0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752161AbbJROOc (ORCPT ); Sun, 18 Oct 2015 10:14:32 -0400 Received: by wicfv8 with SMTP id fv8so45369401wic.0 for ; Sun, 18 Oct 2015 07:14:31 -0700 (PDT) Received: from [10.0.2.15] (pD9FD55AB.dip0.t-ipconnect.de. [217.253.85.171]) by smtp.googlemail.com with ESMTPSA id nd9sm11065652wic.0.2015.10.18.07.14.29 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 18 Oct 2015 07:14:30 -0700 (PDT) From: Philip Seeger Subject: Re: "free_raid_bio" crash on RAID6 To: "linux-btrfs@vger.kernel.org" References: Message-ID: <5623A943.2030304@googlemail.com> Date: Sun, 18 Oct 2015 16:14:27 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi Tobias On 07/20/2015 06:20 PM, Tobias Holst wrote: > My btrfs-RAID6 seems to be broken again :( > > When reading from it I get several of these: > [ 176.349943] BTRFS info (device dm-4): csum failed ino 1287707 > extent 21274957705216 csum 2830458701 wanted 426660650 mirror 2 > > then followed by a "free_raid_bio"-crash: > > [ 176.349961] ------------[ cut here ]------------ > [ 176.349981] WARNING: CPU: 6 PID: 110 at > /home/kernel/COD/linux/fs/btrfs/raid56.c:831 > __free_raid_bio+0xfc/0x130 [btrfs]() > ... It's been 3 months now, have you ever figured this out? Do you know if the bug has been identified and fixed or have you filed a bugzilla report? > One drive is broken, so at the moment it is mounted with "-O > defaults,ro,degraded,recovery,compress=lzo,space_cache,subvol=raid". Did you try removing the bad drive and did the system keep crashing anyway? Philip