[Bug 990913] Re: RAID goes into degrade mode on every boot 12.04 LTS server

[Tom Mercelis]

I added the AUTO -all to my mdadm.conf and updated the initramfs. The
result is that no array is assembled automatically at startup and I
enter the recovery shell. Then I perform an mdadm -A -s and all arrays
are assembled correctly. This assembly takes about 2-3 seconds and
correctly assembles the array depending on another array. I'm not sure
what script causes the wrong assembly, but the mdadm tool itselfs seems
to do it fine.

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https://bugs.launchpad.net/bugs/990913

Title:
  RAID goes into degrade mode on every boot 12.04 LTS server

Status in “mdadm” package in Ubuntu:
  Confirmed

Bug description:
  I have 2 new Dell PowerEdge R515.
  Box have 2 internal SAS drives and 12 hot swap
  I create a 12 driver raid 6 array on the 12 hot swap drives
  without problem but on every reboot I get a message about 
  either degraded or not enough drives for the raid 6.

  If I shutdown and pull all 12 drives and let boot. Then plug them in.
  The array comes up fine most everytime.

  This happens on both of these new R512

  Also loaded 12.04 LTS server on a R710 and
  the mpt2sas load and times out. I had to
  add rootdelay=180 to boot parms.

  Description:    Ubuntu 12.04 LTS
  Release:        12.04

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