linux-kernel - Re: ATA support for 4k sector size

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Message-ID: <49A5D55A.9080402@zytor.com>
Date:	Wed, 25 Feb 2009 15:33:46 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Martin K. Petersen" <martin.petersen@...cle.com>
CC:	Matthew Wilcox <matthew@....cx>, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org, sandeen@...hat.com
Subject: Re: ATA support for 4k sector size

Martin K. Petersen wrote:
> 
> I'll defer to people like yourself for how this needs to work wrt. boot
> loaders and creating partition tables.  I'm CC:ing Eric Sandeen because
> he's also looking at this...
> 

I wish it was left to people like myself.  Realistically when it comes 
to disks with 4096-byte logical sectors it going to matter how the 
firmware chooses to expose it.

Most likely, the universe will explode at this time, since very few 
bootloaders can deal with a sector size other than 512 bytes, and 
virtually every partition table format contains a sector size 
dependency, which also means you'll break any mechanical imaging solution.

It's going to hurt :(

	-hpa
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