linux-kernel - Re: [PATCHSET] block,scsi,libata: implement alt

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Date:	Thu, 30 Apr 2009 10:13:23 +0900
From:	Tejun Heo <tj@...nel.org>
To:	jeff@...zik.org, linux-ide@...r.kernel.org, jens.axboe@...cle.com,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	James.Bottomley@...senPartnership.com, Mauelshagen@...Hat.com,
	dm-devel@...Hat.com
Subject: Re: [PATCHSET] block,scsi,libata: implement alt_size

Tejun Heo wrote:
> Hello,
> 
> This patchset implements alt_size, which is a size hint to the users
> of a block device.  It's primarily to communicate the BIOS (HPA) size
> on ATA devices to userland, so that dmraid can consider it when trying
> to figure out BIOS raid layout.  This is critical as dmraid can be
> tricked into assemblying the wrong raid when fed with the unlocked
> size and if the disk content is right (or, rather, wrong) and good
> number of distros are shipping with ignore_hpa=1 as default.

PING.

-- 
tejun
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