RE: Linux kernel - Libata bad block error handling to user mode program

Kalra Ashish-B00888
2010-03-04T18:42:58Z

Sent from my HTC

-----Original Message-----
From: Mark Lord <kernel@teksavvy.com>
Sent: 04 March 2010 11:20 PM
To: foo saa <foosaa@gmail.com>
Cc: Greg Freemyer <greg.freemyer@gmail.com>; Andrew Morton <akpm@linux-foundation.org>; linux-kernel@vger.kernel.org <linux-kernel@vger.kernel.org>; linux-ide@vger.kernel.org <linux-ide@vger.kernel.org>; Jens Axboe <jens.axboe@oracle.com>; linux-mm@kvack.org <linux-mm@kvack.org>
Subject: Re: Linux kernel - Libata bad block error handling to user mode program

On 03/04/10 10:33, foo saa wrote:
..
> hdparm is good, but I don't want to use the internal ATA SECURE ERASE
> because I can never get the amount of bad sectors the drive had.
..

Oh.. but isn't that information in the S.M.A.R.T. data ??

You'll not find the bad sectors by writing -- a true WRITE nearly never
reports a media error. Instead, the drive simply remaps to a good sector
on the fly and returns success.

Generally, only READs report media errors.

Cheers
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