> mdadm -vvvvvv -A /dev/md0
mdadm: looking for devices for /dev/md0
mdadm: cannot open device /dev/dm-2: Device or resource busy
mdadm: /dev/dm-2 has wrong uuid.
mdadm: no RAID superblock on /dev/dm-1
mdadm: /dev/dm-1 has wrong uuid.
mdadm: cannot open device /dev/dm-0: Device or resource busy
mdadm: /dev/dm-0 has wrong uuid.
mdadm: /dev/sdm2 has wrong uuid.
mdadm: cannot open device /dev/sdm1: Device or resource busy
mdadm: /dev/sdm1 has wrong uuid.
mdadm: cannot open device /dev/sdm: Device or resource busy
mdadm: /dev/sdm has wrong uuid.
mdadm: cannot open device /dev/sdl2: Device or resource busy
mdadm: /dev/sdl2 has wrong uuid.
mdadm: cannot open device /dev/sdl1: Device or resource busy
mdadm: /dev/sdl1 has wrong uuid.
mdadm: cannot open device /dev/sdl: Device or resource busy
mdadm: /dev/sdl has wrong uuid.
mdadm: no RAID superblock on /dev/sdk2
mdadm: /dev/sdk2 has wrong uuid.
mdadm: cannot open device /dev/sdk1: Device or resource busy
mdadm: /dev/sdk1 has wrong uuid.
mdadm: cannot open device /dev/sdk: Device or resource busy
mdadm: /dev/sdk has wrong uuid.
mdadm: no RAID superblock on /dev/sdj2
mdadm: /dev/sdj2 has wrong uuid.
mdadm: no RAID superblock on /dev/sdj
mdadm: /dev/sdj has wrong uuid.
mdadm: no RAID superblock on /dev/sdi2
mdadm: /dev/sdi2 has wrong uuid.
mdadm: no RAID superblock on /dev/sdi
mdadm: /dev/sdi has wrong uuid.
mdadm: no RAID superblock on /dev/sdh2
mdadm: /dev/sdh2 has wrong uuid.
mdadm: no RAID superblock on /dev/sdh
mdadm: /dev/sdh has wrong uuid.
mdadm: no RAID superblock on /dev/sdg2
mdadm: /dev/sdg2 has wrong uuid.
mdadm: cannot open device /dev/sdg1: Device or resource busy
mdadm: /dev/sdg1 has wrong uuid.
mdadm: cannot open device /dev/sdg: Device or resource busy
mdadm: /dev/sdg has wrong uuid.
mdadm: no RAID superblock on /dev/sdf2
mdadm: /dev/sdf2 has wrong uuid.
mdadm: cannot open device /dev/sdf1: Device or resource busy
mdadm: /dev/sdf1 has wrong uuid.
mdadm: cannot open device /dev/sdf: Device or resource busy
mdadm: /dev/sdf has wrong uuid.
mdadm: no RAID superblock on /dev/md1
mdadm: /dev/md1 has wrong uuid.
mdadm: no RAID superblock on /dev/sde2
mdadm: /dev/sde2 has wrong uuid.
mdadm: cannot open device /dev/sde1: Device or resource busy
mdadm: /dev/sde1 has wrong uuid.
mdadm: cannot open device /dev/sde: Device or resource busy
mdadm: /dev/sde has wrong uuid.
mdadm: no RAID superblock on /dev/sdd2
mdadm: /dev/sdd2 has wrong uuid.
mdadm: no RAID superblock on /dev/sdd
mdadm: /dev/sdd has wrong uuid.
mdadm: no RAID superblock on /dev/sdc2
mdadm: /dev/sdc2 has wrong uuid.
mdadm: no RAID superblock on /dev/sdc
mdadm: /dev/sdc has wrong uuid.
mdadm: no RAID superblock on /dev/sdb2
mdadm: /dev/sdb2 has wrong uuid.
mdadm: cannot open device /dev/sdb1: Device or resource busy
mdadm: /dev/sdb1 has wrong uuid.
mdadm: cannot open device /dev/sdb: Device or resource busy
mdadm: /dev/sdb has wrong uuid.
mdadm: no RAID superblock on /dev/sda2
mdadm: /dev/sda2 has wrong uuid.
mdadm: no RAID superblock on /dev/sda
mdadm: /dev/sda has wrong uuid.
mdadm: /dev/sdj1 is identified as a member of /dev/md0, slot 1.
mdadm: /dev/sdi1 is identified as a member of /dev/md0, slot 0.
mdadm: /dev/sdh1 is identified as a member of /dev/md0, slot 3.
mdadm: /dev/sdd1 is identified as a member of /dev/md0, slot 5.
mdadm: /dev/sdc1 is identified as a member of /dev/md0, slot 2.
mdadm: /dev/sda1 is identified as a member of /dev/md0, slot 4.
mdadm: added /dev/sdi1 to /dev/md0 as 0
mdadm: added /dev/sdj1 to /dev/md0 as 1
mdadm: added /dev/sdh1 to /dev/md0 as 3
mdadm: added /dev/sda1 to /dev/md0 as 4
mdadm: added /dev/sdd1 to /dev/md0 as 5
mdadm: added /dev/sdc1 to /dev/md0 as 2
mdadm: /dev/md0 assembled from 3 drives - not enough to start the array.