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SumDog
n00b
Joined: 16 Dec 2005
Posts: 22
Location: Chicago, USA
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 Posted: Sun Jan 20, 2008 12:15 am Post subject: Lost two hard drives in RAID 5 |
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I've lost one hard drive before, and occasionally I'll have to run a JFS fix for file system corruption. Hehe...I've been meaning too backup my music to my parents house for a while now. My old backup is over a year out of date. Well, guess I learned the hard way.
In any case, I lost two drives. I started getting I/O errors over NFS and then I saw this
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donatello ~ # cat /proc/mdstat
Personalities : [raid5] [raid4]
md0 : active raid5 sdg1[5] sde1[3] sdd1[2] sdb1[6](F) sda1[1]
1562842880 blocks level 5, 256k chunk, algorithm 2 [6/4] [_UUU_U]
unused devices: <none>
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Killed everything, shut down the server. I'm using regular old PCI SATA cards and the drives/cards get kinda flaky sometimes. Everything came back up, but the damage had all ready been done. Two drives were marked as bad. You can see the following bellow:
Is there anything I can do short of paying $500 ~ $1000 to a data recovery firm? All I want to do is see what I can recover off the drive.
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mdadm --examine /dev/sda1 /dev/sdb1 /dev/sdd1 /dev/sde1 /dev/sdf1 /dev/sdg1
/dev/sda1:
Magic : a92b4efc
Version : 00.90.00
UUID : ab3864f9:3d679173:7c0379ca:7ca97bc5
Creation Time : Mon May 1 16:49:24 2006
Raid Level : raid5
Used Dev Size : 312568576 (298.09 GiB 320.07 GB)
Array Size : 1562842880 (1490.44 GiB 1600.35 GB)
Raid Devices : 6
Total Devices : 5
Preferred Minor : 0
Update Time : Sat Jan 19 18:51:12 2008
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 2
Spare Devices : 0
Checksum : 29ac968d - correct
Events : 0.5437107
Layout : left-symmetric
Chunk Size : 256K
Number Major Minor RaidDevice State
this 1 8 1 1 active sync /dev/sda1
0 0 0 0 0 removed
1 1 8 1 1 active sync /dev/sda1
2 2 8 49 2 active sync /dev/sdd1
3 3 8 65 3 active sync /dev/sde1
4 4 0 0 4 faulty removed
5 5 8 97 5 active sync /dev/sdg1
/dev/sdb1:
Magic : a92b4efc
Version : 00.90.00
UUID : ab3864f9:3d679173:7c0379ca:7ca97bc5
Creation Time : Mon May 1 16:49:24 2006
Raid Level : raid5
Used Dev Size : 312568576 (298.09 GiB 320.07 GB)
Array Size : 1562842880 (1490.44 GiB 1600.35 GB)
Raid Devices : 6
Total Devices : 5
Preferred Minor : 0
Update Time : Sat Jan 19 14:01:16 2008
State : active
Active Devices : 5
Working Devices : 5
Failed Devices : 1
Spare Devices : 0
Checksum : 29595b8f - correct
Events : 0.5437021
Layout : left-symmetric
Chunk Size : 256K
Number Major Minor RaidDevice State
this 0 8 17 0 active sync /dev/sdb1
0 0 8 17 0 active sync /dev/sdb1
1 1 8 1 1 active sync /dev/sda1
2 2 8 49 2 active sync /dev/sdd1
3 3 8 65 3 active sync /dev/sde1
4 4 0 0 4 faulty removed
5 5 8 97 5 active sync /dev/sdg1
/dev/sdd1:
Magic : a92b4efc
Version : 00.90.00
UUID : ab3864f9:3d679173:7c0379ca:7ca97bc5
Creation Time : Mon May 1 16:49:24 2006
Raid Level : raid5
Used Dev Size : 312568576 (298.09 GiB 320.07 GB)
Array Size : 1562842880 (1490.44 GiB 1600.35 GB)
Raid Devices : 6
Total Devices : 5
Preferred Minor : 0
Update Time : Sat Jan 19 18:51:12 2008
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 2
Spare Devices : 0
Checksum : 29ac96bf - correct
Events : 0.5437107
Layout : left-symmetric
Chunk Size : 256K
Number Major Minor RaidDevice State
this 2 8 49 2 active sync /dev/sdd1
0 0 0 0 0 removed
1 1 8 1 1 active sync /dev/sda1
2 2 8 49 2 active sync /dev/sdd1
3 3 8 65 3 active sync /dev/sde1
4 4 0 0 4 faulty removed
5 5 8 97 5 active sync /dev/sdg1
/dev/sde1:
Magic : a92b4efc
Version : 00.90.00
UUID : ab3864f9:3d679173:7c0379ca:7ca97bc5
Creation Time : Mon May 1 16:49:24 2006
Raid Level : raid5
Used Dev Size : 312568576 (298.09 GiB 320.07 GB)
Array Size : 1562842880 (1490.44 GiB 1600.35 GB)
Raid Devices : 6
Total Devices : 5
Preferred Minor : 0
Update Time : Sat Jan 19 18:51:12 2008
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 2
Spare Devices : 0
Checksum : 29ac96d1 - correct
Events : 0.5437107
Layout : left-symmetric
Chunk Size : 256K
Number Major Minor RaidDevice State
this 3 8 65 3 active sync /dev/sde1
0 0 0 0 0 removed
1 1 8 1 1 active sync /dev/sda1
2 2 8 49 2 active sync /dev/sdd1
3 3 8 65 3 active sync /dev/sde1
4 4 0 0 4 faulty removed
5 5 8 97 5 active sync /dev/sdg1
/dev/sdf1:
Magic : a92b4efc
Version : 00.90.00
UUID : ab3864f9:3d679173:7c0379ca:7ca97bc5
Creation Time : Mon May 1 16:49:24 2006
Raid Level : raid5
Used Dev Size : 312568576 (298.09 GiB 320.07 GB)
Array Size : 1562842880 (1490.44 GiB 1600.35 GB)
Raid Devices : 6
Total Devices : 6
Preferred Minor : 0
Update Time : Tue Dec 18 09:31:25 2007
State : clean
Active Devices : 6
Working Devices : 6
Failed Devices : 0
Spare Devices : 0
Checksum : 296bbc08 - correct
Events : 0.4711098
Layout : left-symmetric
Chunk Size : 256K
Number Major Minor RaidDevice State
this 4 8 81 4 active sync /dev/sdf1
0 0 8 17 0 active sync /dev/sdb1
1 1 8 1 1 active sync /dev/sda1
2 2 8 49 2 active sync /dev/sdd1
3 3 8 65 3 active sync /dev/sde1
4 4 8 81 4 active sync /dev/sdf1
5 5 8 97 5 active sync /dev/sdg1
/dev/sdg1:
Magic : a92b4efc
Version : 00.90.00
UUID : ab3864f9:3d679173:7c0379ca:7ca97bc5
Creation Time : Mon May 1 16:49:24 2006
Raid Level : raid5
Used Dev Size : 312568576 (298.09 GiB 320.07 GB)
Array Size : 1562842880 (1490.44 GiB 1600.35 GB)
Raid Devices : 6
Total Devices : 5
Preferred Minor : 0
Update Time : Sat Jan 19 18:51:12 2008
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 2
Spare Devices : 0
Checksum : 29ac96f5 - correct
Events : 0.5437107
Layout : left-symmetric
Chunk Size : 256K
Number Major Minor RaidDevice State
this 5 8 97 5 active sync /dev/sdg1
0 0 0 0 0 removed
1 1 8 1 1 active sync /dev/sda1
2 2 8 49 2 active sync /dev/sdd1
3 3 8 65 3 active sync /dev/sde1
4 4 0 0 4 faulty removed
5 5 8 97 5 active sync /dev/sdg1
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SkyLine
n00b
Joined: 11 Oct 2006
Posts: 36
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| Posted: Fri Jan 25, 2008 10:46 pm Post subject: |
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Some Suggestion before data recovery.
Check Sata Cables. And Power Cables.
Replace sata card
And Check POWER SUPPLY is enough.... (Not joke) |
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ferg
Guru
Joined: 15 Nov 2002
Posts: 540
Location: Cambridge, UK
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| Posted: Mon Jan 28, 2008 8:53 am Post subject: |
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I'm not sure as you've run the examine command on sda twice rather than all 6 drives, but it looks to me like one drive has been removed, but is still clean.
If this is the case, then just re add that drive to the array and see if it starts.
cheers
Ferg
_________________
Climb up it, kayak down it + make sure it runs on GNU/Linux
"cease to exist, giving my goodbye, drive my car into the ocean,
you think I'm dead, but i sail away, on a wave of mutilation!" |
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