[Bug 1309639] [NEW] Installer locks after failing to install GRUB onto RAID array

[PMOverfield]

Public bug reported:

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)

** Affects: grub-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty ubiquity-2.18.7 ubuntu

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

Title:
  Installer locks after failing to install GRUB onto RAID array

Status in “grub-installer” 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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