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Re: Possibly Broken GPT from Solaris

From: Seth Goldberg
Subject: Re: Possibly Broken GPT from Solaris
Date: Sat, 21 Jan 2012 00:20:49 -0800

On Jan 20, 2012, at 11:31 PM, Richard Laager wrote:

> On Fri, 2012-01-20 at 19:57 -0800, Seth Goldberg wrote:
>> We are in the process of fixing our GPT handling to be spec-compliant,
>> so things should improve in the future.  That said, parted does not
>> honor the # of partition field, which is the source of the problem
>> (well, the source of the problem is that # of partition should be at
>> least 128, but Linux can apparently deal with this better).
> Excellent! And gdisk has an is being improved to handle the existing
> partition tables. Hopefully parted will be too.
> On a disk used in a zpool, Solaris creates a 16K partition #9 at the end
> of the disk with a GUID of 6A945A3B-1DD2-11B2-99A6-080020736631. What is
> that partition for? I don't think I've seen it ever contain any data.

  That partition is used to store device ID information (but I'm not exactly 
sure when it's used -- I'll have to check on that).

> I've seen some people refer to it as an EFI system partition, but that
> should have a GUID of C12A7328-F81F-11D2-BA4B-00A0C93EC93B, right?

  Right -- this isn't the ESP, it's what we call the "Reserved" partition 
(reserved to store device ID information).


> -- 
> Richard

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