UUID=aa65554a-24d9-450a-b10c-63c5c6a4b48a /bulk ext4 defaults 0 2
/swapfile none swap sw 0 0
Note that the second UUID does refer to /dev/md0, despite the contents of mdadm.conf:
blkid /dev/md0
/dev/md0: UUID="aa65554a-24d9-450a-b10c-63c5c6a4b48a" TYPE="ext4"
===Dev Tools===