From owner-freebsd-hackers@FreeBSD.ORG Tue Jun 9 20:10:31 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 3F399106566C; Tue, 9 Jun 2009 20:10:31 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl [IPv6:2001:4070:101:2::1]) by mx1.freebsd.org (Postfix) with ESMTP id 6B8078FC1D; Tue, 9 Jun 2009 20:10:28 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1]) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3) with ESMTP id n59KAMQq008335; Tue, 9 Jun 2009 22:10:22 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from localhost (wojtek@localhost) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3/Submit) with ESMTP id n59KAM5R008332; Tue, 9 Jun 2009 22:10:22 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Date: Tue, 9 Jun 2009 22:10:22 +0200 (CEST) From: Wojciech Puchar To: Dan Naumov In-Reply-To: Message-ID: References: <20090609172142.GA92146@ebi.local> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: Nick Barkas , freebsd-current@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: sysinstall, GJOURNAL and ZFS 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: Tue, 09 Jun 2009 20:10:32 -0000 > filesystems/volumes of today, which can easily span 10tb+ in a > production environment, having to deal with fsck times is a complete > no-go. > just use large block sizes are really small amount of inodes. it's unlikely that you will fill such huge FS with mostly small files, so larger blocks are not wasting space. Just DON'T USE defaults. fsck takes <5 minutes to check 1TB drive with -b 32768 and -i 524288 > One could of course argue that environments where 10tb+ volumes are > used right now are special cases, where the administrator would know No it's not special case. Just needs to be handled properly.