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

From: Kalra Ashish-B00888
Date: Thu Mar 04 2010 - 13:43:02 EST




Sent from my HTC

-----Original Message-----
From: Mark Lord <kernel@xxxxxxxxxxxx>
Sent: 04 March 2010 11:20 PM
To: foo saa <foosaa@xxxxxxxxx>
Cc: Greg Freemyer <greg.freemyer@xxxxxxxxx>; Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx <linux-kernel@xxxxxxxxxxxxxxx>; linux-ide@xxxxxxxxxxxxxxx <linux-ide@xxxxxxxxxxxxxxx>; Jens Axboe <jens.axboe@xxxxxxxxxx>; linux-mm@xxxxxxxxx <linux-mm@xxxxxxxxx>
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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