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After a harddrive failure, i tried to resync the existing software raid.

I copied the partitionstructure

sgdisk -R /dev/sdb /dev/sda
sgdisk -G /dev/sdb

And added the drive back to the volumes

mdadm /dev/md0 -a /dev/sdb1
mdadm /dev/md1 -a /dev/sdb2
mdadm /dev/md2 -a /dev/sdb3

md0 and md1 are syncing properly but the main data partition md2 failes.

Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid1 sdb1[2] sda1[0] 16768896 blocks super 1.2 [2/2] [UU]

md2 : active raid1 sdb3[2] sda3[0] 2912831744 blocks super 1.2 [2/1] [U_] [>....................] recovery = 1.0% (31483008/2912831744) finish=297.5min speed=161368K/sec

md1 : active raid1 sdb2[2] sda2[0] 523968 blocks super 1.2 [2/2] [UU]

Somewhere in the middle recovery stops / fails, and I don't have a clue why.

Any ideas how to find out what the problem is ?

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