Which (physical) disk is broken?
From: Turbo Fredriksson <hidden>
Date: 2004-12-21 11:08:55
I've forgot, and I can't seem to find out which physical disk
is broken/removed from an array...
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aurora:~# mdadm -D /dev/md/1
/dev/md/1:
Version : 00.90.01
Creation Time : Wed Oct 27 08:12:44 2004
Raid Level : raid5
Array Size : 141483520 (134.93 GiB 144.88 GB)
Device Size : 17685440 (16.87 GiB 18.11 GB)
Raid Devices : 9
Total Devices : 8
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Tue Dec 21 12:04:43 2004
State : dirty, degraded
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
0 8 49 0 active sync /dev/scsi/host3/bus0/target4/lun0/part1
1 8 81 1 active sync /dev/scsi/host3/bus0/target8/lun0/part1
2 8 97 2 active sync /dev/scsi/host3/bus0/target9/lun0/part1
3 8 241 3 active sync /dev/scsi/host4/bus0/target4/lun0/part1
4 65 1 4 active sync /dev/scsi/host4/bus0/target5/lun0/part1
5 65 17 5 active sync /dev/scsi/host4/bus0/target8/lun0/part1
6 65 33 6 active sync /dev/scsi/host4/bus0/target9/lun0/part1
7 65 113 7 active sync /dev/scsi/host4/bus0/target14/lun0/part1
8 0 0 -1 removed
UUID : d0b4e775:290f5785:2e6ad7d1:5a66178b
Events : 0.974012
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I _THINK_ (!!) it's '/dev/scsi/host4/bus0/target15/lun0/part', but
I'm not sure.... Don't want to yank a perfectly working disk :)
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aurora:~# mdadm -E /dev/scsi/host4/bus0/target15/lun0/part1
mdadm: No super block found on /dev/scsi/host4/bus0/target15/lun0/part1 (Expected magic a92b4efc, got 00000000)
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Is there any way I can find out exactly which disk 'number 8' is?
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aurora:~# mdadm --version
mdadm - v1.6.0 - 4 June 2004
aurora:~# uname -a
Linux aurora 2.6.8.1 #1 SMP Sun Dec 12 21:04:58 CET 2004 sparc64 unknown
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