2017-04-24 15:39 GMT+02:00, Andreas Klauer <Andreas.Klauer@xxxxxxxxxxxxxx>: > On Mon, Apr 24, 2017 at 02:54:50PM +0200, Patrik Dahlström wrote: >> What offset are you referring to here? The --data-offset to the mdadm >> --create command? > > Yes, data offset... It all makes sense to me now! I believe I was still in sort of a panicked mode yesterday. The pieces are starting to make more sense today. > Another thing you can check is, pick an arbitrary offset that does not > have zeroes on the disks, and see if the XOR matches for 5, or 6 disks. I will try that when I get home. > > If you have a 5disk parity match in the zone that should be 6disks, > then maybe one of your earlier mdadm create experiments started to > sync the raid. This is definitely a possibility. > > This would be yet another nail in your coffin. Could you define how big nail? I can live with some data loss, but preferably not 20 TB. Best regards Patrik Dahlström -- 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