[Bug 1722394] Re: Ubiquity crashs during grub-install on btrfs

[Sean Seago]

Beats me, but the bug isn't actually new.  After talking to some folks at the local LUG and perusing the forums I've seen numerous cases of this issue occurring.  There are other bug reports as well, and I believe most of them have been closed as unresolved.  The gist of Canonical's stance is this:
Using btrfs to make a whole-disk volume (so that one mounts /dev/nvme0n1 instead of /dev/nvme0n1p1 or /dev/sda instead of /dev/sda1) is unsupported so this isn't a bug but could maybe be resolved with a feature request.  

This particular behavior has been around since btrfs was first included
as an option on Ubuntu...circa 10.10 if memory serves me right.

What makes this bug different is that it's the first time I've seen the
bug cause the installer to crash.  Normally it complains about not being
able to install grub, I switch over to a terminal and do it manually and
everything is swimmingly after that.

Just to clarify, grub-install will install grub on a btrfs volume
without errors and it works splendidly but the installer doesn't handle
whatever exception occurs as a result of this apparently unorthodox
request.

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https://bugs.launchpad.net/bugs/1722394

Title:
  Ubiquity crashs during grub-install on btrfs

Status in grub-installer package in Ubuntu:
  New

Bug description:
  After creating btrfs volume via mkfs.btrfs /dev/sda (for example),
  ubiquity crashes during grub-install.

  "grub-install /dev/sda" does not fail or generate an error, however.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: ubiquity 17.10.8
  ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
  Uname: Linux 4.13.0-12-generic x86_64
  ApportVersion: 2.20.7-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.384
  CurrentDesktop: KDE
  Date: Mon Oct  9 14:56:15 2017
  LiveMediaBuild: Kubuntu 17.10 "Artful Aardvark" - Beta amd64 (20171009)
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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