Bug#927165: debian-installer: improve support for LUKS

[Guilhem Moulin]

Hi there,

On Mon, 01 Jul 2019 at 04:21:46 +0200, Cyril Brulebois wrote:
> Roger Shimizu <rosh at debian.org> (2019-06-30):
>> Thank for the above doc, which is quite easy understanding and straightforward!
>> […]
>> I confirmed with /boot set up in LUKS1, everything works fine.
>> It‘d configure non encrypted /boot when in D-I, then after finishing
>> D-I, and reboot to system, manually make LUKS1 for /boot partition.
> 
> Thanks for letting us know you appreciate it.

+1 :-)
 
> Guilhem, any chance I could trick you into adding a pointer from the
> installation-guide to your documentation? It would be an extra string
> for translators to deal with, but that might be added to unstable and
> then backported at a later point to buster once translators have had a
> chance to catch up.

Sure, I even planned to do that when I heard about your post-mini-DebConf
“hiccup” ;-)  I remained on the road for another 3 weeks and unfortunately
didn't find time since the mini Debconf.  Thanks for the poke, I'll try to
tend to it this week.

>> However, I found adding: GRUB_PRELOAD_MODULES="luks cryptodisk" to
>>  /etc/default/grub is not necessary.  GRUB_ENABLE_CRYPTODISK=y is the
>>  only setting need to append manually.
>
> From my limited tests, it seemed that GRUB_ENABLE_CRYPTODISK=y was
> indeed sufficient.

Thanks Roger for the info, and to Cyril for confirming.  Interestingly
my 6 years old notes suggest otherwise, but I don't remember the details
and it's of course possible that I messed up the tests back then.  I'll
try to test again with older GRUB to find an inflexion point, and modify
the document accordingly.

Cheers,
-- 
Guilhem.
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