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

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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.

** Affects: partman-crypto (Ubuntu)
     Importance: High
         Status: Triaged


** Tags: wily xenial
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Can't install /home into separate LUKS encrypted volume
https://bugs.launchpad.net/bugs/1523194
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