[Bug 942106] Re: software raid doesn't assemble before mount on boot

[Jean-Philippe Guérard]

Setting multiple md arrays seems to be a good way to reproduce this bug
(see #682019). Or maybe just a big md array.

After that, it's just a timing issue. After rebooting several times, you will
probably run into this issue.

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https://bugs.launchpad.net/bugs/942106

Title:
  software raid doesn't assemble before mount on boot

Status in “mdadm” package in Ubuntu:
  Confirmed
Status in “update-manager” package in Ubuntu:
  Fix Released

Bug description:
  Booting a system with a software raid device can randomly or systematically
  fail.

  The system boot will fail at the initramfs stage and the system complain
  that it can't find the software raid device.

  The user ends up on the initramfs console. Rebooting might solve the issue
  (or not).

  ---

  Happens at once on boot.

  I happened to use the kernel 3.0.0-17, because the computer would not boot because of the bug that the line
  udevadm settle
  is missing in function degraded_arrays() in the file /usr/share/initramfs-tools/scripts/mdadm-functions which results in a halt on an initram fs console.

  ---

  ProblemType: Crash
  Date: Mon Feb 27 17:46:23 2012
  ExecutablePath: /usr/bin/update-manager
  ExecutableTimestamp: 1326448883
  InterpreterPath: /usr/bin/python2.7
  ProcCmdline: /usr/bin/python ./xorg_fix_proprietary.py
  ProcCwd: /tmp/update-manager-Qp_QfE
  PythonArgs: ['/usr/bin/update-manager']
  Traceback:
   Traceback (most recent call last):
     File "./xorg_fix_proprietary.py", line 160, in <module>
       if ver and apt_pkg.VersionCompare(ver, "2:1.5.0") > 0:
   ValueError: _system not initialized
  UserGroups:

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