GRUB seems to confuse md boot device and its spares

[Ari Epstein <aepstein607@gmail.com>]

I'm having peculiar difficulties getting grub to boot from a RAID1 md.  The machine has four drives, and the md (which contains / as well as /boot) is on sdc1 and sdd1.  sda1 and sdb1 were once configured as spares though at the moment they are not connected to the raid at all.  The grub.cfg has the correct UUID for the md.

Today I upgraded to the latest 7.4 kernel (3.2.54-2) and rebooted.  The system appeared to boot correctly, but I noticed the kernel is the same one that was running before (3.2.41-2).

The output from update-grub suggests it is detecting older installations of debian, which I suspect are in sda1 and sdb1.  I am guessing that somehow grub is loading from those unused spare partitions instead of the ones in active use, but could use some help confirming this/understanding how I can fix it.  Any ideas?

Here's the update-grub output:

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

Generating grub.cfg ...

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

Found linux image: /boot/vmlinuz-3.2.0-4-amd64

Found initrd image: /boot/initrd.img-3.2.0-4-amd64

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

Found linux image: /boot/vmlinuz-2.6.32-5-amd64

Found initrd image: /boot/initrd.img-2.6.32-5-amd64

Found linux image: /boot/vmlinuz-2.6.32-trunk-amd64

Found initrd image: /boot/initrd.img-2.6.32-trunk-amd64

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

Found Debian GNU/Linux (7.0) on /dev/sda1

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

Found Debian GNU/Linux (7.2) on /dev/sdb1

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

Found Debian GNU/Linux (7.4) on /dev/sdc1

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

Found Debian GNU/Linux (7.4) on /dev/sdd1

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

error: superfluous RAID member (2 found).

done