[Bug 1074653] Re: Problems with Luks and LVM

[Dmitrijs Ledkovs]

You can get the alternate installer back if you boot via mini.iso. See
https://help.ubuntu.com/community/Installation/MinimalCD

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https://bugs.launchpad.net/bugs/1074653

Title:
  Problems with Luks and LVM

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  I have following configuration (Desktop): (ubuntu64)

  /dev/sdd2                                  ext4 -> /boot
  /dev/sdd1                                  extended
  /dev/sdd5                                  LUKS Encryption
  /dev/mapper/sdd5_crypt       LVM2 -> /dev/SSD
  /dev/sdc1                                  LUKS Encryption
  /dev/mapper/sdc1_crypt       LVM2 -> /dev/Private
  /dev/sdb1                                  extended
  /dev/sdb5                                  LUKS Encryption
  /dev/mapper/sdb5_crypt       LVM2 -> /dev/Private

  /dev/SSD/Home                        ext4
  /dev/SSD/System                     ext4
  /dev/Private/Documents       ext4

  sdc1_crypt and sdb5_crypt can be unlockt via a derived key from
  sdd5_crypt.

  This was always hard to set up under ubuntu especially /etc/crypttab wasn't creating itself. But with the alternat insatller it was possible to set up Linux this way. With the new isntaller in 12.10 it doesn't work anymore. I needed to go back one release and update, but this makes my system Instabil.
  Once I tried the Fedora Installer, it recognized all of my LUKS Devices and LVMs and displayed them in a way one can understand it. Even easier then the alternate installer in 12.04. The Installer even created /etc/crypttab with
  # sdb5_crypt UUID=xxx sdd5_crypt luks,keyscript=/lib/cryptsetup/scripts/decrypt_derived
  which I allways hat to create manually in Ubuntu after the Installation was done.

  So with 12.10, even if I get the encrypted volumes to work with the installer (thats not easy) the installed Ubuntu afterwards wont start.
  At least the functionality of the alternate installer for 13.04 would be nice, but even nicer would be an installer as easy as the fedora one for crypt+lvm.

  I have following configuration (Netbook): (ubuntu32)

  /dev/sda1                                  ext4 -> /boot
  /dev/sda2                                  extended
  /dev/sda5                                  LUKS Encryption
  /dev/mapper/sda5_crypt       LVM2 -> /dev/netbook

  /dev/netbook/System            ext4
  /dev/netbook/Home              ext4

  With this configuration I couldn't even unlock the encrypted volume to
  get to the LVM to mount one of my drives "System" or "Home". This also
  was set up using the alternate installer and now its not possible to
  make a clean installation with 12.10 (which I would because upgrade
  broke my wireless, just a fact on the side).

  Hopefully this confiuration details can help you reproducing my bugs.

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