It is possible to recover data after incorrect assemble of the RAID5?

Hi all,

I did a silly mistake when i tried to assemble array back to the raid5 with 3 drives in total.

What i did:

-I found some errors in smart. So i removed first disk from raid:

mdadm --fail /dev/md0 /dev/sda7 mdadm --remove /dev/md0 /dev/sda7

-Than i run badblocks with these parameters:

badblocks -svw /dev/sda

-Output of the command i never saw, but it should look like this:

Checking for bad blocks in read-write mode From block 0 to 65535 Testing with pattern 0xaa: done Reading and comparing: 0 0.00% done, 0:00 elapsed 1

2 .
.
65535
done
Testing with pattern 0x55: done Reading and comparing: done Testing with pattern 0xff: done Reading and comparing: done Testing with pattern 0x00: done Reading and comparing: done
Pass completed, 65536 bad blocks found.

-During the test something happened and server crashed. I boot live cd for recovery.

-First i copied partition table from second disk to first disk.

-I tested following commands on test data and for mine shame they were successful on test data but not on live data:

|mdadm -Cv /dev/md0 -lraid5 -n3 /dev/sd[abc]7|

I do not understand how i could overlook assemble in documentation.

Question is. It is possible if i exactly know what was on the first disk in time of creation of array recover the data. If yes it is possible in human life? What tools can be used for this?

BR

Radovan