From owner-freebsd-hackers@FreeBSD.ORG Fri Oct 9 17:06:29 2009 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DA9DE106566B for ; Fri, 9 Oct 2009 17:06:29 +0000 (UTC) (envelope-from is@rambler-co.ru) Received: from mailrelay1.rambler.ru (mailrelay1.rambler.ru [81.19.66.239]) by mx1.freebsd.org (Postfix) with ESMTP id 8FD478FC12 for ; Fri, 9 Oct 2009 17:06:29 +0000 (UTC) Received: from kas30pipe.localhost (localhost [127.0.0.1]) by mailrelay1.rambler.ru (Postfix) with ESMTP id 4174C130C77 for ; Fri, 9 Oct 2009 21:06:28 +0400 (MSD) Received: from localhost (unknown [81.19.68.137]) by mailrelay1.rambler.ru (Postfix) with ESMTP id 9C000130C1D for ; Fri, 9 Oct 2009 21:06:27 +0400 (MSD) Date: Fri, 9 Oct 2009 21:06:27 +0400 From: Igor Sysoev To: freebsd-hackers@freebsd.org Message-ID: <20091009170627.GR14613@rambler-co.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=koi8-r Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) X-Anti-Virus: Kaspersky Anti-Virus for MailServers 5.5.33/RELEASE, bases: 02092009 #2738642, status: clean X-SpamTest-Envelope-From: is@rambler-co.ru X-SpamTest-Group-ID: 00000000 X-SpamTest-Info: Profiles 9536 [Sen 02 2009] X-SpamTest-Info: {HEADERS: header Content-Type found without required header Content-Transfer-Encoding} X-SpamTest-Method: none X-SpamTest-Rate: 10 X-SpamTest-SPF: pass X-SpamTest-Status: Not detected X-SpamTest-Status-Extended: not_detected X-SpamTest-Version: SMTP-Filter Version 3.0.0 [0284], KAS30/Release Subject: newfs -r 2 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Oct 2009 17:06:29 -0000 I have found that newfs in 8-STABLE has -r switch with zero default value. I think it should be 1 or 2 by default: as I understand, these sectors are not used usually by filesystem anyway since they are not in last cylinder group. Therefore noone would see the difference in usable space, but this reservation will allow to add gjournal to the filesystem later. BTW, could anyone tell how to learn the last sector that filesystem may really use ? -- Igor Sysoev http://sysoev.ru/en/