[Bug 1766987] [NEW] instllation fails on mdm array

[Robert Andrews]

Public bug reported:

Installing 18.04 beta 2 in place of 17.10 on an existing raid array.
Grub reports unable to install on a disk that is was already installed
on. The installer appeared to hang, but lights on the disk drives
continues to flash for a couple of hours.  When all was quiet I quit out
of the installer script and received notification that it had crashed.

Same happened on another server yesterday while experimenting with
installing on zfs array - this too failed and I reverted to installing
18.04 on a single drive and then mounting the zfs pool

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.12
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
Uname: Linux 4.15.0-13-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CasperVersion: 1.393
Date: Wed Apr 25 17:27:50 2018
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug bionic ubiquity-18.04.4 ubuntu

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https://bugs.launchpad.net/bugs/1766987

Title:
  instllation fails on mdm array

Status in grub-installer package in Ubuntu:
  New

Bug description:
  Installing 18.04 beta 2 in place of 17.10 on an existing raid array.
  Grub reports unable to install on a disk that is was already installed
  on. The installer appeared to hang, but lights on the disk drives
  continues to flash for a couple of hours.  When all was quiet I quit
  out of the installer script and received notification that it had
  crashed.

  Same happened on another server yesterday while experimenting with
  installing on zfs array - this too failed and I reverted to installing
  18.04 on a single drive and then mounting the zfs pool

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.12
  ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
  Uname: Linux 4.15.0-13-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CasperVersion: 1.393
  Date: Wed Apr 25 17:27:50 2018
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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