Because one of the WD Blue disks in the backup RAID1, /dev/md0, failed I
bought a pair of WD Red NASdrives. They're installed and partitioned as a
linux filesystem. They show up in fdisk -l as /dev/sde/ and /dev/sdf/.
When I try to create a new RAID1 on these disks I get this result:
# mdadm --create --verbose /dev/md0 -l 1 -n 2 /dev/sd{e,f}
mdadm: /dev/sde appears to be part of a raid array:
level=raid0 devices=0 ctime=Wed Dec 31 16:00:00 1969
mdadm: partition table exists on /dev/sde but will be lost or
meaningless after creating array
mdadm: Note: this array has metadata at the start and
may not be suitable as a boot device. If you plan to
store '/boot' on this device please ensure that
your boot-loader understands md/v1.x metadata, or use
--metadata=0.90
mdadm: /dev/sdf appears to be part of a raid array:
level=raid0 devices=0 ctime=Wed Dec 31 16:00:00 1969
mdadm: partition table exists on /dev/sdf but will be lost or
meaningless after creating array
mdadm: size set to 1953383488K
mdadm: automatically enabling write-intent bitmap on large array
Continue creating array? yes
mdadm: /dev/md0 is already in use.
I deleted /dev/md0, but mdadm still sees it being present. As I need only
one RAID how can I get mdadm to create a new /dev/md0 because it's not in
/dev/.
Rich
