Beware of old superblocks, getting available again when (re-)creating partitions. Superblocks stay on the disks if you don't "mdadm --zero-superblock" the partition, prior to deleting the partition from the partition table.
Beware of old superblocks, getting available again when (re-)creating partitions. Superblocks stay on the disks if you don't "mdadm --zero-superblock" the partition, prior to deleting the partition from the partition table.