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Re: LUKS UUID format

From: John Lane
Subject: Re: LUKS UUID format
Date: Sat, 29 Nov 2014 19:56:44 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.2

On 18/11/14 12:38, Andrei Borzenkov wrote:
> 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 :)
Consider it persuaded :)

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