degraded array at reboot

[Bruno Wolff III]

On Thu, Feb 23, 2012 at 10:17:00 -0500,
  Jeffrey Ross <jeff at bubble.org> wrote:
> system is running Fedora 16 with RAID 1
> 
> upon a reboot some but not all of the partitions come up as degraded and
> its always the same partitions on the same disk (/dev/sda) /dev/md2,
> /dev/md6, and /dev/md7 (/usr, /boot, & /home respectively, /, /var, and
> swap mount with no issue)
> 
> config files are:
> 
> $ cat /etc/mdadm.conf
> # mdadm.conf written out by anaconda
> MAILADDR root
> AUTO +imsm +1.x -all
> ARRAY /dev/md0 level=raid1 num-devices=2
> UUID=f7d27973:c1e3562c:c97c2b84:778f9f47
> ARRAY /dev/md1 level=raid1 num-devices=2
> UUID=e36e8193:d486ae1b:d9d2d364:ba744b1a
> ARRAY /dev/md2 level=raid1 num-devices=2
> UUID=0bd93f75:e97de149:0c512d92:67476c03
> ARRAY /dev/md3 level=raid1 num-devices=2
> UUID=a3dcd591:ad258de3:429e09ef:aee74491
> ARRAY /dev/md6 level=raid1 num-devices=2
> UUID=7ef1e8e1:d8d1efd9:bfe78010:bc810f04
> ARRAY /dev/md7 level=raid1 num-devices=2
> UUID=e496a7cf:f99735d8:4d63b4bd:567000c5

Have you double checked those UIDs against the arrays? My first guess would
be that there is a mismatch for the problem arrays.