Re: Support for plain dm-crypt and detached LUKS header

[Maxim Fomin]

 I have not found any discussion of the issue. Why create separate
module? It appears (I may be wrong) that this functionality can be
provided by existing module.

By the way, why user should configure the module manually? My
understanding is that user should provide all necessary options to the
command (manually or via grub.cfg) which decrypts dm-crypt partition
just like in case of cryptsetup.

Best regards,
Maxim Fomin

On Sat, Feb 11, 2017 at 4:14 PM, Andrei Borzenkov <address@hidden> wrote:
> 11.02.2017 12:40, Maxim Fomin пишет:
>>  Hi!
>>
>> After reviewing grub help I see no support for plain dm-crypt, despite
>> the fact that LUKS is supported (my understanding is that it is easier
>> to implement plain dm-crypt than luks, but may be wrong - in any case
>> it is irrelevant). After googling the problem I see that there were
>> some patches to support the feature
>> (http://lists.gnu.org/archive/html/grub-devel/2015-06/msg00109.html)
>> but it seems they were not accepted.
>>
>> So, what is the state of supporting plain dm-crypt?
>
> Same as before - it is currently not supported. As was discussed, having
> separate grub module that implements it would probably be OK with
> understanding that user has to configure it manually; full fledged
> support including grub-install magic is likely not possible at all.
>
>> Having support for
>> plain dm-crypt or detached luks header helps denying that the
>> partition is cryptocontainer.
>>
>> Best regards,
>> Maxim Fomin
>>
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>
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