[Bug 1309639] Re: grub confused by named md raid arrays

[PMOverfield]

Thank you for this insight, Philip.
I know you didn't ask for it, but I've wiped the HDs (DBAN) and rebuilt the system from scratch, but OMITTING the "-N" option from mdadm, so that the RAID sets don't get the confusing optional names. Unfortunately GRUB still fails to install, producing exactly the same error message as before. I'm going to forward the syslog and grub-probe outputs in case you wish to check them for clues. Previous attempts to comment suggest that I might need a separate comment for each. Here goes!

** Attachment added: "Output from grube-probe at /target"
   https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1309639/+attachment/4090902/+files/noname.grubprobe.out

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https://bugs.launchpad.net/bugs/1309639

Title:
  grub confused by named md raid arrays

Status in “grub2” package in Ubuntu:
  New

Bug description:
  Am installing Trusty (AMD-64 Desktop), with /boot as a RAID-1 set
  (ext2fs) under mdadm on a GPT partition, with a separate, non-RAID,
  unformatted partition for BIOS-grub. At the stage of attempting to
  install GRUB it fails, reporting fatal error. I get the window
  offering the option (among others) to continue without installing GRUB
  anywhere. I select this option, but the "OK" button never becomes
  active and no further progress occurs. The installer shows signs of
  having "crashed" or "locked-up", so I cannot be confident that the
  remainder of the installation has been completed, otherwise I could
  assemble the RAID-sets at a mount-point, then chroot and complete the
  installation of GRUB that way. I know that this build isn't intended
  for RAID installations, but a clean failure would be helpful. Thank
  you.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubiquity 2.18.7
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CasperVersion: 1.340
  Date: Fri Apr 18 17:38:08 2014
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --
  LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  ProcEnviron:
   LANGUAGE=en_GB.UTF-8
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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