[Bug 1445156] [NEW] Ubiquity grub-install fails when installing to a RAID10 with manual partitioning

[Peter Cordes]

Public bug reported:

Ubiquity running from Kubuntu 15.04 beta2 usb image.

The installer GUI said it was going to try installing GRUB on sda, not
sda1.  (This isn't a duplicate of #1322182)

my setup is:
/ on XFS on /dev/md0: RAID10 of sda2,sdb2,sdc2
/home on XFS on a different md RAID10 of sda3,sdb3,sdc3
/var/tmp on XFS on a different md RAID0 of sda4,sdb4,sdc4
/f on XFS on a different md RAID5 of sda6,sdb6,sdc6,sdd (yes, whole sdd, it's an old 2.5TB, others are new 3TB)

To get Ubiquity to install with the root fs on md0, rather than
partitioning md0, I had to mkfs /dev/md0.  (Which is fine, because I
wanted to use custom mkfs.xfs options anyway.)

I know this setup is viable because I had it working after a manual
rsync / chroot / grub-install to get my 14.10 system onto this RAID
setup.  I'm only using the installer (kubuntu 15.04 beta2) because I've
been having some weird crashes, and want to get rid of any cruft that
might have built up over the course of continuous upgrades from Ubuntu
7.04.

Also, it would be nice if the installer gave the option to grub-install
onto ALL your disks, not just sda.  In a raid setup, you want all your
disks to be bootable in case one dies but your essential filesystems are
only degraded, not lost.  Even in a non-raid setup, it's potentially
useful if you aren't sure the BIOS detects your disks in the same order
as Linux.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubiquity 2.21.17 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
Uname: Linux 3.19.0-10-generic x86_64
ApportVersion: 2.16.2-0ubuntu4
Architecture: amd64
CasperVersion: 1.356
CurrentDesktop: KDE
Date: Thu Apr 16 15:03:02 2015
InstallCmdLine: file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd.lz quiet splash ---
LiveMediaBuild: Kubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug kubuntu third-party-packages ubiquity-2.21.17 vivid

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https://bugs.launchpad.net/bugs/1445156

Title:
  Ubiquity grub-install fails when installing to a RAID10 with manual
  partitioning

Status in grub-installer package in Ubuntu:
  New

Bug description:
  Ubiquity running from Kubuntu 15.04 beta2 usb image.

  The installer GUI said it was going to try installing GRUB on sda, not
  sda1.  (This isn't a duplicate of #1322182)

  my setup is:
  / on XFS on /dev/md0: RAID10 of sda2,sdb2,sdc2
  /home on XFS on a different md RAID10 of sda3,sdb3,sdc3
  /var/tmp on XFS on a different md RAID0 of sda4,sdb4,sdc4
  /f on XFS on a different md RAID5 of sda6,sdb6,sdc6,sdd (yes, whole sdd, it's an old 2.5TB, others are new 3TB)

  To get Ubiquity to install with the root fs on md0, rather than
  partitioning md0, I had to mkfs /dev/md0.  (Which is fine, because I
  wanted to use custom mkfs.xfs options anyway.)

  I know this setup is viable because I had it working after a manual
  rsync / chroot / grub-install to get my 14.10 system onto this RAID
  setup.  I'm only using the installer (kubuntu 15.04 beta2) because
  I've been having some weird crashes, and want to get rid of any cruft
  that might have built up over the course of continuous upgrades from
  Ubuntu 7.04.

  Also, it would be nice if the installer gave the option to grub-
  install onto ALL your disks, not just sda.  In a raid setup, you want
  all your disks to be bootable in case one dies but your essential
  filesystems are only degraded, not lost.  Even in a non-raid setup,
  it's potentially useful if you aren't sure the BIOS detects your disks
  in the same order as Linux.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: ubiquity 2.21.17 [modified: lib/partman/automatically_partition/question]
  ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
  Uname: Linux 3.19.0-10-generic x86_64
  ApportVersion: 2.16.2-0ubuntu4
  Architecture: amd64
  CasperVersion: 1.356
  CurrentDesktop: KDE
  Date: Thu Apr 16 15:03:02 2015
  InstallCmdLine: file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd.lz quiet splash ---
  LiveMediaBuild: Kubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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