[Bug 1315344] Re: Grub install failed on disks with software RAID

[Kevin Lyda]

I can report the exact same issue with a fresh 16.04 install.

I did manual partitioning, left the requisite 1MB+1MB free for grub and
it now boots to grub-rescue with a message about an unknown filesystem.
I booted into rescue mode and ran grub-install /dev/sda which annoyingly
installed on my usb install fob (that will teach me not to check device
names).

I'm now running grub-install on the booted system and will see if it
reboots.

Nope. Still broken.

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https://bugs.launchpad.net/bugs/1315344

Title:
  Grub install failed on disks with software RAID

Status in grub-installer package in Ubuntu:
  Incomplete

Bug description:
  I've got two 2TB drives set up with identical partitions, which are combined into RAID1 arrays (five mirrors across the two disks).
  On a free RAID1 I've installed Trusty 64bit from the Desktop installer ("try Ubuntu" first, install mdadm, run mdadm --assemble --scan, then start installer). I then wanted grub to be installed onto /dev/sda and /dev/sdb, but both fail.

  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 May  2 13:05:29 2014
  InstallCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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