From owner-freebsd-questions@FreeBSD.ORG  Thu Nov 16 07:30:32 2006
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: 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 C62D616A415
	for <freebsd-questions@freebsd.org>;
	Thu, 16 Nov 2006 07:30:32 +0000 (UTC)
	(envelope-from jonathan@hst.org.za)
Received: from sirian.hst.org.za (sirian.hst.org.za [209.203.2.130])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 3E03543D55
	for <freebsd-questions@freebsd.org>;
	Thu, 16 Nov 2006 07:30:27 +0000 (GMT)
	(envelope-from jonathan@hst.org.za)
Received: from localhost (localhost.hst.org.za [127.0.0.1])
	by sirian.hst.org.za (Postfix) with ESMTP id 9587631C6F7
	for <freebsd-questions@freebsd.org>;
	Thu, 16 Nov 2006 09:35:16 +0200 (SAST)
Received: from sirian.hst.org.za ([127.0.0.1])
	by localhost (sirian.hst.org.za [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id 74200-04 for <freebsd-questions@freebsd.org>;
	Thu, 16 Nov 2006 09:35:16 +0200 (SAST)
Received: by sirian.hst.org.za (Postfix, from userid 1004)
	id 6AAAE31C6CD; Thu, 16 Nov 2006 09:35:16 +0200 (SAST)
Received: from sysadmin.int.dbn.hst.org.za (sysadmin.int.dbn.hst.org.za
	[10.1.1.20]) by sirian.hst.org.za (Postfix) with ESMTP id B489531C67D
	for <freebsd-questions@freebsd.org>;
	Thu, 16 Nov 2006 09:35:15 +0200 (SAST)
From: Jonathan McKeown <jonathan@hst.org.za>
Organization: Health Systems Trust
To: freebsd-questions@freebsd.org
Date: Thu, 16 Nov 2006 09:34:59 +0200
User-Agent: KMail/1.7.2
References: <f3625a5e0611140813l70f24411j98ac03c12a9ed6f3@mail.gmail.com>
	<200611151740.43910.jonathan@hst.org.za>
	<200611151152.50893.lists@jnielsen.net>
In-Reply-To: <200611151152.50893.lists@jnielsen.net>
MIME-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200611160934.59907.jonathan@hst.org.za>
X-Spam-Checker-Version: SpamAssassin 2.61 (1.212.2.1-2003-12-09-exp) on 
	sirian.hst.org.za
X-Spam-Level: 
X-Spam-Status: No, hits=-4.9 required=7.0 tests=BAYES_00 autolearn=ham 
	version=2.61
X-Virus-Scanned: by amavisd-new at hst.org.za
Subject: Re: gmirror (was Re: It's time to bite the bullet and do a major
	upgrade...)
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
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: Thu, 16 Nov 2006 07:30:32 -0000

On Wednesday 15 November 2006 18:52, John Nielsen wrote:

[risk that last sector of geom(4) provider is already in use]

> It's generally significantly less likely to even be available for use due
> to device sizes not dividing evenly into the block sizes used by the
> filesystem, etc.
>
> Depending on what type of device you actually pass to gmirror as a consumer
> (raw disk, slice, or partition), it should be possible to manually ensure
> that there are a couple unused sectors at the end. It just depends on how
> paranoid (or possibly other more reasonable terms) you are.

I've always maintained that the correct question to ask a sysadmin is not

Are you paranoid?

but rather

Are you paranoid *enough*?

<grin />
Jonathan