[Bug 1523194] Re: Can't install /home into separate LUKS encrypted volume

[Pierre Equoy]

I'm facing a similar (if not the same) issue.

My laptop has the following hardware:

- 500 GB HDD (TOSHIBA MQ01ACF050 (AV002D)) (/dev/sda)
- 32 GB SSD (LITEON LST-32S9G-11 SATA 32GB (ZS2110B)) (/dev/sdb)

I'm trying to install Ubuntu 19.04 on it as follow, using disk
encryption:

/dev/sda:
- EFI partition: 128 MB
- unencrypted /boot: 1024 MB
- encrypted volume hosting root (/) formatted in ext4: 31 GB

/dev/sdb:
- encrypted volume hosting home partition (/home) formatted in ext4: 500 GB

I set up the system like this, but when pressing "Install Now", I see
the following error pop-up:

"The attempt to mount a file system with type ext4 in Encrypted volume
(sdb3_crypt) at / failed"

I click on "Continue" nevertheless, but the installer is then stuck at
"Creating ext4 file system for /home in partition #1 of Encrypted volume
(sda1_crypt)...".

I've attached the logs (/var/log/*) from the live session. The
/var/log/partman file might be of interest.

$ dpkg -l | grep ubiquity
ii  ubiquity                                   19.04.9                              amd64        Ubuntu live CD installer
ii  ubiquity-casper                            1.405                                all          Configuration hooks for live installer
ii  ubiquity-frontend-gtk                      19.04.9                              amd64        GTK+ frontend for Ubiquity live installer
ii  ubiquity-slideshow-ubuntu                  146                                  all          Ubiquity slideshow for Ubuntu
ii  ubiquity-ubuntu-artwork                    19.04.9                              all          Ubuntu artwork for Ubiquity live installer

** Attachment added: "varlogs.tar.xz"
   https://bugs.launchpad.net/ubuntu/+source/partman-crypto/+bug/1523194/+attachment/5256476/+files/varlogs.tar.xz

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https://bugs.launchpad.net/bugs/1523194

Title:
  Can't install /home into separate LUKS encrypted volume

Status in partman-crypto package in Ubuntu:
  Triaged

Bug description:
  For various reasons, I would prefer not to use the default full disk
  encryption method (which relies on LVM) when installing Ubuntu.
  Rather, I would prefer to install directly into multiple LUKS-
  encrypted volumes.

  Using the “something else” option presented during installation of
  15.10 and 16.04 (onto a non-UEFI system with a gpt formatted drive), I
  have been able to create a LUKS-encrypted volume on sda2, and I have
  been able to install boot (/boot) into non-encrypted sda1, and root
  (/) into LUKS-encrypted sda2.   All is good in that simple situation.
  (To get this to work, I skip creating a swap partition, and then
  create a swap file in sda2 after installation has completed.)

  However, when using the “something else” option presented during
  installation of 15.10 and 16.04, after creating LUKS-encrypted volumes
  on sda2 and sda3, I have not been able to install boot (/boot) into
  non-encrypted sda1, root (/) into LUKS-encrypted sda2, and home
  (/home) into into LUKS-encrypted sda3.  Rather, although I am able to
  create the LUKS-encrypted volumes, the installer hangs during
  installation when the following is displayed:

  “Creating ext4 system for /home in partition #1 of Encrypted volume
  (sda3_crypt)...”

  For what its worth, I am able to accomplish the above installation
  (/home on LUKS-encrypted sda3) using the net-installer for 15.10.
  Also, I was able to accomplish the above installation (/home on LUKS-
  encrypted sda3) using the graphical installer for 15.04.  So it seems
  that some sort of regression has crept into the graphical installer
  for 15.10 and 16.04.

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