From owner-freebsd-questions@FreeBSD.ORG  Wed Sep  3 13:07:41 2003
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 1612316A4DA
	for <freebsd-questions@freebsd.org>;
	Wed,  3 Sep 2003 13:07:41 -0700 (PDT)
Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.86.163])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 49D9943FDD
	for <freebsd-questions@freebsd.org>;
	Wed,  3 Sep 2003 13:07:36 -0700 (PDT)
	(envelope-from phk@phk.freebsd.dk)
Received: from critter.freebsd.dk (localhost [127.0.0.1])
	by critter.freebsd.dk (8.12.9/8.12.9) with ESMTP id h83K71i8064331;
	Wed, 3 Sep 2003 22:07:02 +0200 (CEST)
	(envelope-from phk@phk.freebsd.dk)
To: Petri Helenius <pete@he.iki.fi>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Wed, 03 Sep 2003 22:58:43 +0300."
             <3F5647F3.5080502@he.iki.fi> 
Date: Wed, 03 Sep 2003 22:07:01 +0200
Message-ID: <64330.1062619621@critter.freebsd.dk>
cc: Max Clark <max.clark@media.net>
cc: freebsd-hackers@freebsd.org
cc: freebsd-performance@freebsd.org
cc: Geoff Buckingham <geoffb@chuggalug.clues.com>
cc: Dan Nelson <dnelson@allantgroup.com>
cc: freebsd-questions@freebsd.org
Subject: Re: 20TB Storage System 
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: Wed, 03 Sep 2003 20:07:41 -0000

In message <3F5647F3.5080502@he.iki.fi>, Petri Helenius writes:

>fsck problem should be gone with less inodes and less blocks since if
>I read the code correctly, memory is consumed according to used inodes
>and blocks so having like 20000 inodes and 64k blocks should allow
>you to build 5-20T filesystem and actually fsck them.

I am not sure I would advocate 64k blocks yet.

I tend to stick with 32k block, 4k fragment myself.

This is a problem which is in the cross-hairs for 6.x

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.