[Bug 1223435] [NEW] Grub fails to boot linux after install on dual boot with RAID+LVM

[cwsupport]

Public bug reported:

Ive just been trying out new installs on a PC which was running Kubuntu
12.04.3 LTS (upgraded from Beta1). The 12.04 Beta 1 installed perfectly
on this system and has been working for a long time. Essentially the
system is fine so we can rule out related issues.

Trying to install all of the following:

Ubuntu Server 13.04
Ubuntu Server 13.10 daily current

Everything is fine, disk partitioning, RAID, LVM etc then grub fails on
reboot and drops to grub rescue after "error: no such disk". Ive been
unable to make a successful boot from the command line.

Essentially the system has 3 disks.

sda - 250GB seagate - Multiple partitions containing multi-boot Windows Vista64 bit and Windows XP 32bit.
sdb - 500GB seagate - see below.
sdc - 500GB seagate - see below.

Both sdb/sdc are configured as 2 partitions 1GB and 499GB forming two
raid sets

md0 - 1GB for /boot
md1 - 499GB for LVM

The LVM has partitions for /, /home, /tmp and swap amongst others.

I have tried with the partitions using both ext4 and resiserfs and the
result is the same - fails to boot and goes into grub rescue.

grub is referencing the drives as (muuid/blah).
In grub resuce ls shows (md/0) and (md/1) along with the various hd bits for each of the drives and partitions.

It should have booted without problem - it appears to be unable to find
/boot properly.

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: dual-boot grub lvm mutli-boot raid

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https://bugs.launchpad.net/bugs/1223435

Title:
  Grub fails to boot linux after install on dual boot with RAID+LVM

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  Ive just been trying out new installs on a PC which was running
  Kubuntu 12.04.3 LTS (upgraded from Beta1). The 12.04 Beta 1 installed
  perfectly on this system and has been working for a long time.
  Essentially the system is fine so we can rule out related issues.

  Trying to install all of the following:

  Ubuntu Server 13.04
  Ubuntu Server 13.10 daily current

  Everything is fine, disk partitioning, RAID, LVM etc then grub fails
  on reboot and drops to grub rescue after "error: no such disk". Ive
  been unable to make a successful boot from the command line.

  Essentially the system has 3 disks.

  sda - 250GB seagate - Multiple partitions containing multi-boot Windows Vista64 bit and Windows XP 32bit.
  sdb - 500GB seagate - see below.
  sdc - 500GB seagate - see below.

  Both sdb/sdc are configured as 2 partitions 1GB and 499GB forming two
  raid sets

  md0 - 1GB for /boot
  md1 - 499GB for LVM

  The LVM has partitions for /, /home, /tmp and swap amongst others.

  I have tried with the partitions using both ext4 and resiserfs and the
  result is the same - fails to boot and goes into grub rescue.

  grub is referencing the drives as (muuid/blah).
  In grub resuce ls shows (md/0) and (md/1) along with the various hd bits for each of the drives and partitions.

  It should have booted without problem - it appears to be unable to
  find /boot properly.

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