[Bug 1891239] [NEW] Grub install fails during 20.04 install to software RAID 1

[Scott]

Public bug reported:

Tried hardware RAID 1 without success earlier today. Gave up and tried
software install.  When Grub2 was beginging to install to EFI partition
(as recommended by LTS installer), it ran into a fatal error. (It's been
a long day trying to get RAID 1 to work with Desktop 20.04). Will try
once more letting the Grub2 use the RAID partition (again, not recommend
per the LTS installer).  Thanks.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity 20.04.15.2
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.445.1
Date: Tue Aug 11 16:58:00 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug focal ubiquity-20.04.15.2 ubuntu

** Summary changed:

- Grub install fails during 20.04 nstall to software RAID 1
+ Grub install fails during 20.04 install to software RAID 1

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https://bugs.launchpad.net/bugs/1891239

Title:
  Grub install fails during 20.04 install to software RAID 1

Status in grub-installer package in Ubuntu:
  New

Bug description:
  Tried hardware RAID 1 without success earlier today. Gave up and tried
  software install.  When Grub2 was beginging to install to EFI
  partition (as recommended by LTS installer), it ran into a fatal
  error. (It's been a long day trying to get RAID 1 to work with Desktop
  20.04). Will try once more letting the Grub2 use the RAID partition
  (again, not recommend per the LTS installer).  Thanks.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity 20.04.15.2
  ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
  Uname: Linux 5.4.0-42-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.445.1
  Date: Tue Aug 11 16:58:00 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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