Creating failed-mode RAID1 with mdadm

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Hey everyone,

	Creating a new array today, I decided I should probably start
using mdadm instead of the old tools.  I've been using it a bit at home
to do minor things, and it seemed nice.
	I've got a box with two 20G ide drives installed.  One is
currently the root drive at /dev/hda1 and the other is one of the disks
for the mirrored pair at /dev/hde1.  I'm trying to create the array with
/dev/hdg1 as a failed disk, and then move /dev/hda to /dev/hde after I
start booting the machine off of /dev/md0.
	When I do:

# mdadm --create /dev/md0 --level 1 --raid-disks=2 /dev/hde1 /dev/hdg1

I get:

mdadm: Cannot open /dev/hdg1: No such device or address
mdadm: create aborted

This makes sense, as /dev/hdg doesn't really exist yet.  I've tried
doing:

# mdadm --set-faulty /dev/md0 /dev/hdg1

but it doesn't seem to help.  How can I build an array like this via
mdadm?

Ross Vandegrift
ross@willow.seitz.com

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