[Bug 1208268] [NEW] grub not recognising my GPT+mdadm+lvm layout

[Robert Collins]

Public bug reported:

I have a setup that AIUI is supported, but grub doesn't handle it for
some reason.

I have 4 3TB disks in a non-UEFI AMD 64-bit PC.

Each disk has a 10MiB Bios Boot Partition, and the remainder in a 'linux raid' partition.
MDADM then has the 4 linux raid partitions in RAID6.
On top of that I have LVM2.

Grub-install finds the right modules AFAICT - and I've tried hard coding
the gpt+mdadm+lvm recognisers in, wit no joy.

At the moment my workaround is to have a manually created USB key with a
copy of the current kernel on it.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: grub-pc 2.00-13ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
Date: Mon Aug  5 11:11:43 2013
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: Upgraded to raring on 2013-07-14 (21 days ago)

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug raring

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https://bugs.launchpad.net/bugs/1208268

Title:
  grub not recognising my GPT+mdadm+lvm layout

Status in “grub2” package in Ubuntu:
  New

Bug description:
  I have a setup that AIUI is supported, but grub doesn't handle it for
  some reason.

  I have 4 3TB disks in a non-UEFI AMD 64-bit PC.

  Each disk has a 10MiB Bios Boot Partition, and the remainder in a 'linux raid' partition.
  MDADM then has the 4 linux raid partitions in RAID6.
  On top of that I have LVM2.

  Grub-install finds the right modules AFAICT - and I've tried hard
  coding the gpt+mdadm+lvm recognisers in, wit no joy.

  At the moment my workaround is to have a manually created USB key with
  a copy of the current kernel on it.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: grub-pc 2.00-13ubuntu3
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.1
  Architecture: amd64
  Date: Mon Aug  5 11:11:43 2013
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_AU.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: Upgraded to raring on 2013-07-14 (21 days ago)

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