Bug#641264: debian-installer: cannot install to already encrypted partitions

[Matthew Munro <bugzilla.97@gmail.com>]

Package: debian-installer
Version: debian-9.3.0
Severity: normal

On Thu, 23 Feb 2012 21:20:33 +0100 Johan Vervloet <johan.vervloet@gmail.com> wrote:
> device-mapper: reload ioctl failed: Invalid argument
> Failed to setup dm-crypt key mapping for device /dev/sda6.
> Check that kernel supports aes-xts-plain64 cipher (check syslog for more info).

I was led to this bug report by similar output in speech synthesis + expert mode, while attempting to select the correct components to achieve a cryptsetup.

My route to success was to load the rescue component and then execute ‘depmod -a’ in a shell before the cryptsetup command. (Message #5 taught me the depmod bit; thank you.)