RAID array overwritten first 13 GB

[CrimsonRider]

Hi guys,

I've got a doozy, and can't figure it out how to fix it.

I've got a failed RAID5 array. To be more presice, I've got 3 disks of which 2 had their first 13 GB overwritten. Is it possible to save those?

The situation is this;

Disk A [ 13 GB Destroyed ] [ RAID 5 Proper data ]
Disk B [ RAID 5 Proper data ]
Disk C [ 13 GB Destroyed ] [ RAID 5 Proper data ]

The examine of the middle disk is this;



root@ruby:/etc# mdadm --examine /dev/sdd1
/dev/sdd1:
Magic : a92b4efc
Version : 00.90.00
UUID : fd5f0b43:9ba326f8:140ee418:7ef6ee01 (local to host ruby)
Creation Time : Mon Apr 19 15:44:39 2010
Raid Level : raid5
Used Dev Size : 976759936 (931.51 GiB 1000.20 GB)
Array Size : 1953519872 (1863.02 GiB 2000.40 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 3

Update Time : Wed Oct 6 14:27:19 2010
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Checksum : a7f92348 - correct
Events : 650369

Layout : left-symmetric
Chunk Size : 64K

Number Major Minor RaidDevice State
this 1 8 33 1 active sync /dev/sdc1

0 0 8 17 0 active sync /dev/sdb1
1 1 8 33 1 active sync /dev/sdc1
2 2 8 1 2 active sync /dev/sda1
root@ruby:/etc#