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

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Message-ID: <yq1r5nubze0.fsf@sermon.lab.mkp.net>
Date:	Mon, 08 Mar 2010 10:34:47 -0500
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	James Bottomley <James.Bottomley@...e.de>,
	Tejun Heo <tj@...nel.org>,
	"linux-ide\@vger.kernel.org" <linux-ide@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Daniel Taylor <Daniel.Taylor@....com>,
	Jeff Garzik <jeff@...zik.org>, Mark Lord <kernel@...savvy.com>,
	tytso@....edu, hirofumi@...l.parknet.co.jp,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>, irtiger@...il.com,
	Matthew Wilcox <matthew@....cx>, aschnell@...e.de,
	knikanth@...e.de, jdelvare@...e.de
Subject: Re: ATA 4 KiB sector issues.

>>>>> "hpa" == H Peter Anvin <hpa@...or.com> writes:

hpa> I would very much like a reference for a platform which has
hpa> firmware which can successfully boot from 4K-logical media.  It
hpa> would be very useful for bootloader testing.

I have yet to find one.

hpa> Aligning partitions is something we should have done long ago.  It
hpa> affects RAID and many flash drives just as much or more than
hpa> 4K-sectored disks.

Yup.

hpa> As far as partitioning... I believe we should be using GPT
hpa> partition tables where possible.  Even on non-EFI systems, it's
hpa> simply a much better partition table format.

Agreed.

-- 
Martin K. Petersen	Oracle Linux Engineering
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