From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chris Mason" Subject: Problem with missing drive Date: Tue, 7 Sep 2004 20:50:56 -0400 Sender: linux-raid-owner@vger.kernel.org Message-ID: <003301c4953d$e6af7a60$0600a8c0@poseiden> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Return-path: To: linux-raid@vger.kernel.org List-Id: linux-raid.ids I have a RAID5 array with 5 160 GB WD drives, 3 data, 1 parity, 1 spare. RAID Personalities : [raid5] read_ahead 1024 sectors md0 : active raid5 hde1[0] hdg1[1] hdi1[2] hdk1[3] hdl1[5] 468864768 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU] Mdadm reports a missing drive which does not exist but I suspect is recorded on the superblocks of one or more of the drives. I'd like some advice on clearing this up and getting rid of the "dirty" flag. [root@munster root]# mdadm --detail /dev/md0 /dev/md0: Version : 00.90.00 Creation Time : Sat Sep 4 07:01:50 2004 Raid Level : raid5 Array Size : 468864768 (447.14 GiB 480.16 GB) Device Size : 156288256 (149.05 GiB 160.08 GB) Raid Devices : 4 Total Devices : 6 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Sun Sep 5 05:05:22 2004 State : dirty, no-errors Active Devices : 4 Working Devices : 5 Failed Devices : 1 Spare Devices : 1 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State 0 33 1 0 active sync /dev/hde1 1 34 1 1 active sync /dev/hdg1 2 56 1 2 active sync /dev/hdi1 3 57 1 3 active sync /dev/hdk1 5 57 65 5 /dev/hdl1 UUID : 8cb5dd66:4d5944e4:4c8eacb8:9f4cae58 [root@munster root]# cat /etc/mdadm.conf DEVICE /dev/hde1 /dev/hdg1 /dev/hdi1 /dev/hdk1 /dev/hdl1 ARRAY /dev/md0 level=raid5 num-devices=5 UUID=8cb5dd66:4d5944e4:4c8eacb8:9f4cae58 Chris Mason masonc@masonc.com Box 340, The Valley, Anguilla, British West Indies Tel. (264) 497-5670 - Cell: (264) 235-5670 - Also (305)-735-3483 Fax: (264) 497-8463 - US Fax (815)301-9759 Yahoo IM: netconcepts_anguilla@yahoo.com