I have a 3-disk software raid 5. Two disk appear to have failed at the same time; their number of Events is the same, while other third disk's is higher. I have copied all three disks into new partitions so that I can experiment on them without hosing them further, and tried recreating the array with just the broken two (since they should be in the same state). But nothing I've tried gets me a usable superblock. Are there other things I can try to recover the data?
Here is the mdadm --examine for each drive:
/dev/sdc1:
Magic : a92b4efc
Version : 0.90.00
UUID : f8d0c619:9f54ad08:bd0b98c0:101144a1
Creation Time : Sun Jul 18 01:56:33 2010
Raid Level : raid5
Used Dev Size : 488383936 (465.76 GiB 500.11 GB)
Array Size : 976767872 (931.52 GiB 1000.21 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 0
Update Time : Sat Sep 27 13:59:35 2014
State : clean
Active Devices : 1
Working Devices : 1
Failed Devices : 2
Spare Devices : 0
Checksum : cbf4174b - correct
Events : 5983
Layout : left-symmetric
Chunk Size : 64K
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 0 0 1 faulty removed
2 2 0 0 2 faulty removed
/dev/sdd1:
Magic : a92b4efc
Version : 0.90.00
UUID : f8d0c619:9f54ad08:bd0b98c0:101144a1
Creation Time : Sun Jul 18 01:56:33 2010
Raid Level : raid5
Used Dev Size : 488383936 (465.76 GiB 500.11 GB)
Array Size : 976767872 (931.52 GiB 1000.21 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 0
Update Time : Sat Sep 27 08:00:42 2014
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Checksum : cbf3c2d6 - correct
Events : 5940
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 49 2 active sync /dev/sdd1
/dev/sde1:
Magic : a92b4efc
Version : 0.90.00
UUID : f8d0c619:9f54ad08:bd0b98c0:101144a1
Creation Time : Sun Jul 18 01:56:33 2010
Raid Level : raid5
Used Dev Size : 488383936 (465.76 GiB 500.11 GB)
Array Size : 976767872 (931.52 GiB 1000.21 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 0
Update Time : Sat Sep 27 08:00:42 2014
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Checksum : cbf3c2e8 - correct
Events : 5940
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 2 8 49 2 active sync /dev/sdd1
0 0 8 17 0 active sync /dev/sdb1
1 1 8 33 1 active sync /dev/sdc1
2 2 8 49 2 active sync /dev/sdd1