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Re: [patch] search for partition using GPT GUID
From: |
Isaac Dupree |
Subject: |
Re: [patch] search for partition using GPT GUID |
Date: |
Thu, 11 Mar 2010 15:04:26 -0500 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.8) Gecko/20100301 Shredder/3.0.3 |
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