From owner-freebsd-fs@FreeBSD.ORG  Sat Dec 10 16:55:26 2011
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 569F41065673
	for <freebsd-fs@freebsd.org>; Sat, 10 Dec 2011 16:55:26 +0000 (UTC)
	(envelope-from rmh.aybabtu@gmail.com)
Received: from mail-iy0-f182.google.com (mail-iy0-f182.google.com
	[209.85.210.182])
	by mx1.freebsd.org (Postfix) with ESMTP id 238868FC08
	for <freebsd-fs@freebsd.org>; Sat, 10 Dec 2011 16:55:25 +0000 (UTC)
Received: by iakl21 with SMTP id l21so159689iak.13
	for <freebsd-fs@freebsd.org>; Sat, 10 Dec 2011 08:55:25 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=mime-version:sender:in-reply-to:references:date
	:x-google-sender-auth:message-id:subject:from:to:cc:content-type;
	bh=i0eZLXpX0CCupLoiNeCFBe6Di2lCX2gtvgpyQAAKCqM=;
	b=CRKezHiXu7gazvESE7D85lPhNEo0Gnd/Ve0BCmU8MbZSCENqI8LW7VdiE4jXB99cqo
	ZwD2ti71WRy38oWgFIvF1cO9lVY3lF7QFoUyJW0mMt5O6WZtZA+4zsTb8sTkQqy7oAsg
	8sFiHsMk/F6pedzPp78tE7B7y9CkEVshpBThM=
MIME-Version: 1.0
Received: by 10.50.159.199 with SMTP id xe7mr8127673igb.77.1323536125591; Sat,
	10 Dec 2011 08:55:25 -0800 (PST)
Sender: rmh.aybabtu@gmail.com
Received: by 10.42.222.200 with HTTP; Sat, 10 Dec 2011 08:55:25 -0800 (PST)
In-Reply-To: <jbvqve$b9q$1@dough.gmane.org>
References: <20111208134307.GA5266@thorin>
	<201112091838.pB9IcpUe038205@chez.mckusick.com>
	<jbvqve$b9q$1@dough.gmane.org>
Date: Sat, 10 Dec 2011 17:55:25 +0100
X-Google-Sender-Auth: Z4dYCl5pECivjmsYjbMhNjeyAag
Message-ID: <CAOfDtXPvQgrU4JQZ6exH8zaFnSqUFTNDGx1F0v1S+oA7QCCFsQ@mail.gmail.com>
From: Robert Millan <rmh@freebsd.org>
To: Johannes Totz <johannes@jo-t.de>
Content-Type: text/plain; charset=UTF-8
Cc: freebsd-fs@freebsd.org
Subject: Re: [PATCH] Wipe other file systems when creating new UFS
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 10 Dec 2011 16:55:26 -0000

2011/12/10 Johannes Totz <johannes@jo-t.de>:
> Naive question here: why not wipe the first and last few megabytes? Better
> safe than sorry...

I'm not exactly against wiping the first and last few megabytes, but
before doing that I'd rather know what other file systems which are
not already covered are we trying to erase (in part so we can document
them).

> Also would be good to document the cases this is supposed to catch *in the
> code*. So that is does not get forgotten.

UFSv1 was already documented in the code, my patch adds a note about ZFS.