From owner-freebsd-questions@FreeBSD.ORG  Sun Mar 13 23:56:30 2005
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 6A16516A4CE
	for <freebsd-questions@freebsd.org>;
	Sun, 13 Mar 2005 23:56:30 +0000 (GMT)
Received: from brian.vpk.bme.hu (brian.vpk.bme.hu [152.66.236.2])
	by mx1.FreeBSD.org (Postfix) with ESMTP id ADE5843D5D
	for <freebsd-questions@freebsd.org>;
	Sun, 13 Mar 2005 23:56:29 +0000 (GMT)
	(envelope-from ricsip@mailbox.hu)
Received: from brian.vpk.bme.hu ([152.66.236.2] ident=root)
	by brian.vpk.bme.hu with smtp (Exim 3.35 #1 (Debian))
	id 1DAcj3-0000cu-00
	for <freebsd-questions@freebsd.org>; Mon, 14 Mar 2005 00:42:25 +0100
Message-Id: <6.1.2.0.2.20050314004626.0270e450@mailbox.hu>
X-Sender: ricsip@mailbox.hu (Unverified)
X-Mailer: QUALCOMM Windows Eudora Version 6.1.2.0
Date: Mon, 14 Mar 2005 00:56:30 +0100
To: freebsd-questions@freebsd.org
From: =?iso-8859-1?Q?P=E1sztor?= =?iso-8859-1?Q?_Rich=E1rd?=
	<ricsip@mailbox.hu>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed
Subject: Filesystem creation with integrated bad-block detection
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 13 Mar 2005 23:56:30 -0000

I wonder if it would be possible to implement under freeebsd an interesting 
feature
which can be found in linux:

mkfs.ext2(8)
.......
-c
Check the device for bad blocks before creating the file system. If this 
option is specified twice, then a slower, destructive, read-write test is 
used instead of a fast read-only test.
...

I searched the archive for this subject, and i found that simple answer 
that modern hard drives have
the so called spare sectors, and if they cant do these reallocations 
transparently because they
ran out of those reserved sectors -> throw the drive into the trash.
But what abou using freebsd on older machines with hard drives that dont 
support spare sectors?
Having a few bad sectors doesnt mean that a 4-5 Gb driver is useless 
because one isnt able to mark those
few sectors.

ricsip