Array will not assemble

Perhaps I am misunderstanding how assemble works, but I have created a new RAID 1 array on a pair of SCSI drives and am having difficulty re-assembling it after a reboot.

The relevent mdadm.conf entry looks like this:


ARRAY /dev/md3 level=raid1 num-devices=2 UUID=72189255:acddbac3:316abdb0:9152808d devices=/dev/sdc,/dev/sdd

The above is all one line.

If I run "mdadm -As", I get the error:

mdadm: no devices found for /dev/md3.

If I then run:

mdadm --assemble /dev/md3 /dev/sdc /dev/sdd

it all starts up fine.

Thanks,

Richard