Auto-assembling arrays using mdadm

[Sean Puttergill <puttergi@yahoo.ca>]

Hi.

I am looking to script auto-assembly of all arrays
detected on an arbitrary set of drives using mdadm.

The way I am thinking of doing this is as follows:

mdadm.conf =

DEVICE /dev/sd*

----

1. Use "mdadm -E" on each drive in turn to get the
UUID for the array to which it belongs and assemble a
list of unique UUIDs.

2. Run "mdadm -A --uuid=<UUID> --auto=md --scan" for
each unique UUID.


My question is, is it currently possible for me to get
mdadm to do this automatically?  Ideally I would
invoke  mdadm once to discover all RAID arrays that
exist on the devices listed in the mdadm.conf file and
assemble them, automatically creating the require md
devices.

I know that I could use kernel RAID autodetect, but I
hear that this is to be deprecated soon.  Also, the
RAID arrays I am using live on bare drives, not
partitions (i.e. no partition to set to type 0xFD).


Thanks,
Sean


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