failed to re-assemble after cable-problem...
well, ext4 fails with IO-errors, so I checked the disks of the raid and found, that's something wrong with the cables...
after an exchange of cables I tried a "mdadm --assemble --force", but result was that the missing devices are only added as spare-drives, not as active ones.
well maybe, there are errors in filesystem, but the raid should be ok, so how can I change the disk from spare to active?
maybe setting the right info directly in superblock of the disk?
any help would be appreciated
wiebittewas