[Bug 872220] Re: Fails to boot when there's problems with softraid

[DooMMasteR]

I have one HDD with 11.10 installed on and booting fine.

If I now connect a disk which is part of a RAID the boot fails with
mdadm complaining about a degraded root.

This is not satisfying as the RAID is not needed to boot the system, and
the system hangs during boot when it was uncontrolled powered down.This
makes it impossible to run the machine unattended.

In 10.04 and 10.11 the solution was more satisfying as the system would
boot just fine but mark all HDDs of the RAID it found as SPARE and not
activate it thusly the system booted just fine and just failed to
activate the RAID.

I found some solutions but all would break on an unattended update
(initramfs or kernel) and thusly again are not satisfying.

Is there a simple solution to make the system boot just fine as it did
before in 10.04 and 10.11 and does not break with updates or break the
updates themselves?

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https://bugs.launchpad.net/bugs/872220

Title:
  Fails to boot when there's problems with softraid

Status in “mdadm” package in Ubuntu:
  Triaged

Bug description:
  Ubuntu 11.10 has a new feature that it warns you while booting if
  there's a program with the softraid.

  It tells you that a hard disk in the softraid is missing, then asks,
  on the console:

  Continue to boot? y/N

  But it ignores all keypresses. After 5 seconds or so it then times
  out, falls to the default "N" option, and dumps you to a emergency
  bash prompt, with no indication on how to proceed.

  The feature is a good idea, but not in the current broken state.

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