[Bug 1409865] Re: Ubiquity installer crashes with manual partition layout - looks like a regression

[Juergen Scholz]

Please excuse, that I did not got to a workaround before reporting this
bug.

It is indeed possible to have a custom partition layout with the
ubiquity installer on the KDE Live CD, when the layout is created
manually. If the deisred root ("/") filesystem is btrfs it needs to be
completely fresh or created by the installer.

The reason for the issue seems to be that I had a custom subvolume
("sv_root") and that I set that subvolume as the default subvolume to
mount. Whereas the installer wants to use a subvolume named "@" as the
system's root. There seems to be no way to deviate from this during
installation.

I perfectly understand that names are a question of taste. Yet there is
no reason to not support custom subvolume names.

To get a working system:
  * Do not select updates/extras
  * Open manually created LVM/dm-crypt volumes
  * Select your volumes - choose to format your /boot-device and the device containing /
  * Install
  * The installer crashes when it needs to install the bootloader (at least it looks that way)
  * Quit the installer
  * Mount the target into /target with dev, dev/pts, proc, sys, boot; this needs to match the planned layout, which will be put in fstab and crypttab, *EXACTLY*
  * Add /etc/crypttab to reflect the crypted devices correctly
  * Edit /etc/fstab to reflect the system correctly
  * Create /etc/initramfs-tools/conf.d/cryptroot file; this is the step I missed at first
  * update-initramfs -u -k all
  * update-grub
  * Unmount everything
  * reboot

Thank you for taking the time to read this report. Please forgive my
grammar, since I am not a native speaker.

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https://bugs.launchpad.net/bugs/1409865

Title:
  Ubiquity installer crashes with manual partition layout - looks like a
  regression

Status in ubiquity package in Ubuntu:
  New

Bug description:
  If one manually creates a partition layout (btrfs on dm-crypt) and
  starts the ubiquity installer, one is able to select all partitons and
  set everything up as desired. Upon starting the actual installation
  (when filesystems get set up/created/mounted) ubiquity crashes It
  displays the timezone dialog briefly before that.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: ubiquity 2.21.3
  ProcVersionSignature: Ubuntu 3.18.0-8.9-generic 3.18.1
  Uname: Linux 3.18.0-8-generic x86_64
  ApportVersion: 2.15.1-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.347
  CurrentDesktop: KDE
  Date: Mon Jan 12 19:56:26 2015
  InstallCmdLine: file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd.lz quiet splash -- debian-installer/language=de keyboard-configuration/layoutcode?=de
  LiveMediaBuild: Kubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150112)
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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