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Re: 4k sector drives

To: Michael Monnerie <michael.monnerie@xxxxxxxxxxxxxxxxxxx>
Subject: Re: 4k sector drives
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sun, 25 Jul 2010 11:33:42 -0400
Cc: xfs@xxxxxxxxxxx, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Eric Sandeen <sandeen@xxxxxxxxxxx>
In-reply-to: <201007250035.25946@xxxxxx>
References: <201007211333.48363.eye.of.the.8eholder@xxxxxxxxx> <20100724084751.GA32006@xxxxxxxxxxxxx> <4C4B55F7.2090501@xxxxxxxxxxx> <201007250035.25946@xxxxxx>
User-agent: Mutt/1.5.20 (2009-08-17)
On Sun, Jul 25, 2010 at 12:35:21AM +0200, Michael Monnerie wrote:
> Thank you Christoph for clarification, also thanks to Eric - I've been 
> aligning all partitions to a multiple of 512 sectors since a long time, 
> which fits all stripe set sizes up to 256k. Too bad that even Linux 
> fdisk and parted

Current fdisk, and with some limitations parted do the right thing
and align partitions on at least a 1MB boundary.  parted unfortunately
lowers alignment again when any kind of optimal I/O size hint is set,
but I'm still hoping for that bug to get fix in a new release.

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