From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from aserp1040.oracle.com ([141.146.126.69]:18515 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754966Ab3H2CnS (ORCPT ); Wed, 28 Aug 2013 22:43:18 -0400 Date: Thu, 29 Aug 2013 10:43:05 +0800 From: Liu Bo To: lilofile Cc: linux-btrfs@vger.kernel.org Subject: Re: bug Message-ID: <20130829024304.GA22790@localhost.localdomain> Reply-To: bo.li.liu@oracle.com References: <7c55ea3f-bb6d-4e77-8d2f-6368b437ed6a@aliyun.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <7c55ea3f-bb6d-4e77-8d2f-6368b437ed6a@aliyun.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Thu, Aug 29, 2013 at 10:34:00AM +0800, lilofile wrote: > I made a btrfs on five disks using RAID5 (-d raid5 for mount option). When a power failure occurs, I can not remount btrfs after my system reboots. Dmesg for remount is presented as following: > > [ 192.713953] bio: create slab at 1 > [ 192.716230] Btrfs loaded > [ 192.717177] device fsid a0dff7ea-9354-43fd-8516-0e17f370991d devid 1 transid 6 /dev/sdb > [ 192.717712] btrfs: disk space caching is enabled > [ 192.720572] btrfs: failed to read the system array on sdb > [ 192.723398] btrfs: open_ctree failed > > linux md raid5 have resync , the test seems btrfs raid5 have not resync,how fix the bug? Have you tried 'btrfs device scan' before mounting it? -liubo