Re: [patch] search for partition using GPT GUID

[Seth Goldberg]

 If this is to be supported, I highly recommend a GRUB2 commands that allows 
the dumping of the current GPT partitions and their GUIDs so that if one needs 
to "look up" the GUID of a partition whose index is known they can do that 
without booting an OS (if one is even bootable!).

 --S

Quoting Isaac Dupree, who wrote the following on Thu, 11 Mar 2010:

> On 03/11/10 09:43, KESHAV P.R. wrote:
> > GPT GUID is one of the best FILESYSTEM-INDEPENDENT way of uniquely
> > identifying a partition.
>
> I am not sure if Linux supports gpt-uuids (I didn't find any hints of it via 
> google!), but this sounds like it could be great news for Linux encrypted 
> swap -- the current enc-swap recommendations destroy the partition contents 
> on every boot, with a new random encryption-key and new `mkswap` inside it, 
> so you have to refer to it like /dev/sda5.  And then "/dev/sda5" partition 
> gets destroyed on every boot, so the failure mode for wrong-partition is even 
> worse than normal.  But with a UUID stored outside the partition, it would be 
> more possible to uniquely identify that partition.  (Or a different 
> encrypted-swap format, but no one seems interested in doing that :-( )
>
> > Maybe even the GPT Disk GUID can be used to reference a
> > GPT disk (instead of confusion over whether it is (hd1) or (hd2) and
> > so on.
>
> oh, interesting, that could perhaps be nice for something
>
> -Isaac
>
>
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