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

[Anders Logg]

I'm experiencing the same problem. I've recently installed a fresh copy
of 12.04 on my home server and created a RAID 1 array with two identical
disks using the disk utility for data storage (boot, system, home
directories on other separate disks).

To try out my RAID array, I shut down and remove the cables, then boot.
I expect the RAID to magically mount (I have it in fstab) and let me
write some data to the partition. After rebooting with the cables back
in, I expect it to magically sync the disks... (But maybe that is hoping
too much?)

What happens instead is that the system fails to boot and I get thrown
into a busybox shell, even if the system/boot is on an entirely
different disk. This happens even if I add 'noauto' in fstab for the
RAID partition.

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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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