From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#27735: Lookup by UUID
Date: Thu, 20 Jul 2017 22:32:29 +0200
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To: Danny Milosavljevic <dannym@scratchpost.org>
Cc: 27735@debbugs.gnu.org

Heya,

Danny Milosavljevic <dannym@scratchpost.org> skribis:

>> With iso9660, it works=E2=80=A6 by chance, because GRUB=E2=80=99s =E2=80=
=9Csearch --fs-uuid=E2=80=9D
>> fails.  Guess why?  Because it compares UUIDs as strings, and we format
>> it as a DCE UUID instead of an ISO UUID.  Sounds familiar no?  :-)
>
> Yeah :)
>
>> So that=E2=80=99s where we are.  Thoughts on how to address it?
>
> https://www.gnu.org/software/grub/manual/grub.html#Making-a-GRUB-bootable=
-CD_002dROM says:
>
>>...grub-mkrescue
>>This produces a file named grub.iso, which then can be burned into a CD (=
or a DVD), or written to a USB mass storage device.
>>The root device will be set up appropriately on entering your grub.cfg co=
nfiguration file, so you can refer to file names on the CD without needing =
to use an explicit device name. This makes it easier to produce rescue imag=
es that will work on both optical drives and USB mass storage devices.=20
>
> So... just leave the entire "search" instruction off if it's created by g=
rub-mkrescue ?  That's how one could interpret thir "root device" sentence.=
..

Oooh, interesting, that comes in handy.  :-)

Now, how can we pass the information to =E2=80=98grub-configuration-file=E2=
=80=99 so
that it doesn=E2=80=99t emit that =E2=80=9Csearch=E2=80=9D command?

It seems that the bootloader API doesn=E2=80=99t leave room to pass
bootloader-specific options.

Thoughts?

Ludo=E2=80=99.