Hi ! Guy schrieb: >> I guess I need to know more history. Before your problems, was hdi1 >> a spare? I created the arry with following raidtab -snip- # jetzt die 4 Maxtor Platten im Raid 5 raiddev /dev/md2 raid-level 5 nr-raid-disks 4 # von 32 auf 64 konvertiert mit raidreconf - ronny,juni2004 chunk-size 64 nr-spare-disks 0 persistent-superblock 1 parity-algorithm left-symmetric device /dev/hdi1 raid-disk 0 device /dev/hdk1 raid-disk 1 device /dev/hdm1 raid-disk 2 device /dev/hdo1 raid-disk 3 -snap- >> Describe the array before you had problems. Then what went wrong. hdi showed 3 reallocated sectors. I decided to send it back to maxtor, so we shutdown the server, built the disc out of the tower and turned the server on. After some hours, people told us, that there were some problems. I saw, that hdm was marked as faulty ...and smartctl showed some errors. We built hdi back to the server and tried to add it back in the array. But -> Troubles....it wasnt possible (after some power offs hdm was "active" in the array and not marked as faulty) to readd hdi to the raid. After a while i solved it (dmsetup status was the solution) by remove hdi (dmsetup remove hdi) ..then it was possible to readd hdi back to the array via mdadm /dev/md2 -a /dev/hdi1. I was able to mount one partition (lvm) of the raid and i copied the data to other harddiscs (hde, hdg,...). It was also able to mount the second partition of the raid (data), but i got always "I/O Errors", when i tried to copy files. And it was able to read the directory structure. But while trying to backup the data-partition, the rebuild prozess (this was started after i readded hdi1 to the array) of the raid filled our logs (some entrys per second) so we powered of the server and built hdm out (and AFAIK its still on my colleges table). There we are now...you rod the postings, i think. Do you know how to solve our problem or is the data lost? Regards Ronny - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html