Hi Phil, > Ok, so your create operation will be: > > mdadm --create /dev/md1 --level=10 -n 6 --layout=f2 --chunk=64 > --data-offset=variable /dev/sdd1:2048 /dev/sdg1:4096 /dev/sdf1:2048 > /dev/sdb1:2048 /dev/sdc1:2048 /dev/sde1:2048 No --assume-clean? > I'm actually guessing that /dev/sdb1 and /dev/sdc1 need offset 2048 like > the original devices, not the 4096 of a device added later (newer > mdadm). With the mixed offsets, you need mdadm version 3.3. I created and used it this with mdadm 3.2.5, do I really need to get 3.3? > Use "fsck -n" to verify the array before mounting anything, just in case > one or both of those drives really does need :4096. Great! -- 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