/dev/md0: can't read superblock[solved]

проблема решилась. Теперь бы понять что я сделал. ушел читать мануал ))

#mdadm --assemble --scan -v
mdadm: looking for devices for /dev/md0
mdadm: cannot open device /dev/sdg5: Device or resource busy
mdadm: /dev/sdg5 has wrong uuid.
mdadm: no RAID superblock on /dev/sdg3
mdadm: /dev/sdg3 has wrong uuid.
mdadm: cannot open device /dev/sdg2: Device or resource busy
mdadm: /dev/sdg2 has wrong uuid.
mdadm: no RAID superblock on /dev/sdg1
mdadm: /dev/sdg1 has wrong uuid.
mdadm: cannot open device /dev/sdg: Device or resource busy
mdadm: /dev/sdg has wrong uuid.
mdadm: /dev/sdf is identified as a member of /dev/md0, slot 5.
mdadm: /dev/sdd is identified as a member of /dev/md0, slot 3.
mdadm: /dev/sde is identified as a member of /dev/md0, slot 4.
mdadm: /dev/sdc is identified as a member of /dev/md0, slot 2.
mdadm: /dev/sdb is identified as a member of /dev/md0, slot 1.
mdadm: /dev/sda is identified as a member of /dev/md0, slot 0.
mdadm: added /dev/sdb to /dev/md0 as 1
mdadm: added /dev/sdc to /dev/md0 as 2
mdadm: added /dev/sdd to /dev/md0 as 3
mdadm: added /dev/sde to /dev/md0 as 4
mdadm: added /dev/sdf to /dev/md0 as 5
mdadm: added /dev/sda to /dev/md0 as 0
mdadm: /dev/md0 has been started with 6 drives.