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@xxxxxxxxxx
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@xxxxxxxxx
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