linux-kernel - Re: ATA 4 KiB sector issues.

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Message-id: <201003111126.32882.gene.heskett@verizon.net>
Date:	Thu, 11 Mar 2010 11:26:32 -0500
From:	Gene Heskett <gene.heskett@...izon.net>
To:	tytso@....edu, Nikanth Karthikesan <knikanth@...e.de>,
	James Bottomley <James.Bottomley@...e.de>,
	Damian Lukowski <damian@....rwth-aachen.de>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	Jeff Garzik <jeff@...zik.org>, Matthew Wilcox <matthew@....cx>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Tejun Heo <tj@...nel.org>, lkml <linux-kernel@...r.kernel.org>,
	Daniel Taylor <Daniel.Taylor@....com>,
	Mark Lord <kernel@...savvy.com>,
	"H. Peter Anvin" <hpa@...or.com>, hirofumi@...l.parknet.co.jp,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>, irtiger@...il.com,
	aschnell@...e.de, jdelvare@...e.de
Subject: Re: ATA 4 KiB sector issues.

On Thursday 11 March 2010, tytso@....edu wrote:
>On Thu, Mar 11, 2010 at 08:35:26PM +0530, Nikanth Karthikesan wrote:
>> The real problem, here is just that partitioning-tools should create
>> partitions that can work with both XP as well as Windows7. May be distro
>> installers, should ask the user which compatibility he needs.
>
>4k aligned sectors will *work* with Windows XP, will it not?  It's
>just simply a matter of Windows XP, being really ancient, doesn't
>create properly alligned partitions by default.
>
>And how often are we going to see Windows XP systems with these new 4k
>physical sector drives anyway, where the first OS to touch the
>partition is Windows XP?  And in the case where this does happy, the
>resulting partition will be result in terribly performance for Windows
>XP as well as Linux.
>
>What's the specific scenario which you are trying to solve, and how
>likely is it to occur in real life?

And potentially one more question from a list lurker, Ted.  Where are the 
tools that allow us to check and/or adjust that?  I ask since I have 3 of 
these terrabyte drives in this box now and have no clue how to either check 
to see if we're off, or how to fix it if it is.  And I have called my self 
following this discussion without noting if the tools have been specifically 
named.

Thanks

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)

Authors are easy to get on with -- if you're fond of children.
		-- Michael Joseph, "Observer"
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