On 03/11/17 00:47, Wols Lists wrote: > On 31/10/17 18:11, Wols Lists wrote: >> It's possible - I wouldn't know - that the existence of the MBR stops >> mdadm looking for a superblock that applies to the whole drive, which >> could explain why those drives have disappeared. > > Just been digging in the code - function check_raid - I think if you > pass a drive to mdadm it checks the drive for a superblock, and doesn't > look for whether a partition table exists. So I think that's that > explanation blown out the water ... :-( > :-) Thanks for looking. As I mentioned, I think I created the array via Xubuntu. As far as I remember I didn't partition any of the drives - just added them to the array and I think it effectively created one partition across the whole array (which would make sense why you can't see partitions on individual drives) I am pretty sure that is trashed, but I like to try and understand these things ! B. Rgds John
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