From mboxrd@z Thu Jan 1 00:00:00 1970 From: Iruwen Subject: Disk with backup-file died during reshape Date: Mon, 26 Aug 2013 13:38:43 +0200 Message-ID: <521B3E43.5050707@gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hi, the disk holding backup-file unfortunately died during an mdadm --grow /dev/md0 --level=6 --raid-devices=4 --backup-file=/mnt/backup/md0.bak. The speed of the reshape dropped to 0K/sec, apart from that the RAID seems fine. Personalities : [raid6] [raid5] [raid4] md0 : active raid6 sda1[4] sdc1[2] sdd1[3] sdb1[1] 2930271232 blocks super 1.2 level 6, 512k chunk, algorithm 18 [4/3] [UUU_] [==========>..........] reshape = 53.6% (786497536/1465135616) finish=55405950.5min speed=0K/sec unused devices: /dev/md0: Version : 1.2 Creation Time : Fri Feb 11 21:10:18 2011 Raid Level : raid6 Array Size : 2930271232 (2794.52 GiB 3000.60 GB) Used Dev Size : 1465135616 (1397.26 GiB 1500.30 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Mon Aug 26 13:32:09 2013 State : clean, degraded, recovering Active Devices : 3 Working Devices : 4 Failed Devices : 0 Spare Devices : 1 Layout : left-symmetric-6 Chunk Size : 512K Reshape Status : 53% complete New Layout : left-symmetric Name : backup:0 (local to host backup) UUID : 832a100a:2996471b:51867bfa:aaf5c38f Events : 1053146 Number Major Minor RaidDevice State 3 8 49 0 active sync /dev/sdd1 1 8 17 1 active sync /dev/sdb1 2 8 33 2 active sync /dev/sdc1 4 8 1 3 spare rebuilding /dev/sda1 What's the right thing to do now, is this recoverable? I have backups of course and since the RAID is still working I could just copy everything off and recreate it, but I'd rather fix this the "right way" than to set up a new system. Thank you, Iruwen