linux-kernel - Re: Allow turning off hpa-checking.

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Message-ID: <456C056D.2070008@gmail.com>
Date:	Tue, 28 Nov 2006 18:46:21 +0900
From:	Tejun Heo <htejun@...il.com>
To:	avl@...ic.at
CC:	Alan <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org
Subject: Re: Allow turning off hpa-checking.

Andreas Leitgeb wrote:
> On Mon, Nov 27, 2006 at 07:59:40PM +0000, Alan wrote:
>>> size remains still constant, and the exceeding damaged sectors are 
>>> auto-"hidden" by the drive by means of HPA.
>>> Still incorrect?
>> Still incorrect. HPA has nothing to do with damaged sectors. The damaged
>> sectors are replaced from a pool of sectors that are reserved for this
>> purpose.
> 
> Please re-read my previous mail.   I *explicitly* wrote that
> I'm talking about drives, whose "reserved pool of extra/spare
> sectors" was already exhausted. 
> 
> Considering that: still incorrect?

Yeap, if the drive has run out of spare sectors, bad sectors will no 
longer get better after being written to.  The drive will *never* *ever* 
get shorter.

-- 
tejun
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