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Re: LUKS UUID format

From: Andrei Borzenkov
Subject: Re: LUKS UUID format
Date: Tue, 18 Nov 2014 15:38:33 +0300

On Tue, Nov 18, 2014 at 3:25 PM, John Lane <address@hidden> wrote:
> When opening a LUKS volume, I found that the UUID needs to be just the
> digits without the additional formatting hyphens that are commonplace.
>     cryptomount -u af4b91598cbb4122b8010c18adf26b3e
> whereas all other places, like setting the Grub "root" and the Linux
> kernel options, expect the hyphenated format that is described in
> RFC4122. Also, UUIDs in a generated grub.cfg have the hypenated format.
> I have a little function in my experimental grub.cfg that I use like this
> menuentry 'Linux Encrypted' { crypt_start
> af4b9159-8cbb-4122-b801-0c18adf26b3e da9253f8-14ec-43df-8e79-fdf66f71adc8 }
> but I've had to modify it to specify the crypt's UUID twice, like this:
> menuentry 'Linux Encrypted' { crypt_start
> af4b9159-8cbb-4122-b801-0c18adf26b3e af4b91598cbb4122b8010c18adf26b3e
> da9253f8-14ec-43df-8e79-fdf66f71adc8 }
> I wondered if there was any Grub2 function that I could use de-hyphenate
> a parameter containing a UUID, or if "cryptomount" can, or could be made
> to, accept formatted UUIDs .

Sure it could. Just needs someone to persuade it :)

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