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 sda1 16768896 blocks super 1.2 [2/2] [UU]
md2 : active raid1 sdb3 sda3 2912831744 blocks super 1.2 [2/1] [U_] [>....................] recovery = 1.0% (31483008/2912831744) finish=297.5min speed=161368K/sec
md1 : active raid1 sdb2 sda2 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 ?