From owner-freebsd-questions@FreeBSD.ORG Wed Oct 19 15:54:43 2005 Return-Path: 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 94EEB16A41F for ; Wed, 19 Oct 2005 15:54:43 +0000 (GMT) (envelope-from mattvirus@gmail.com) Received: from zproxy.gmail.com (zproxy.gmail.com [64.233.162.201]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2838243D45 for ; Wed, 19 Oct 2005 15:54:43 +0000 (GMT) (envelope-from mattvirus@gmail.com) Received: by zproxy.gmail.com with SMTP id 8so75289nzo for ; Wed, 19 Oct 2005 08:54:42 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:user-agent:x-accept-language:mime-version:to:subject:references:in-reply-to:content-type:content-transfer-encoding; b=R3tloGRoIpEb3xpyevcoPq+h4f/Jnf7/c/edNFKs61ZSe5gEBR061c2Yspbjgst+HAvdCmM8/eUqQ/hV7bUJnScT0u/vEgePFNO4qTQXabSS/T9Yvq6y/wkgzsRdOqlw49JiJF52BfZsMn7fZmDcKWCMMdtoK8xshpGkc4nyweI= Received: by 10.36.220.31 with SMTP id s31mr689526nzg; Wed, 19 Oct 2005 08:54:42 -0700 (PDT) Received: from ?192.168.0.254? ( [68.13.74.217]) by mx.gmail.com with ESMTP id 5sm542405nzk.2005.10.19.08.54.39; Wed, 19 Oct 2005 08:54:41 -0700 (PDT) Message-ID: <43566C00.8000805@gmail.com> Date: Wed, 19 Oct 2005 10:53:36 -0500 From: Matt Virus User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923) X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd References: <4355FBD4.1080000@3x3x3.org> In-Reply-To: <4355FBD4.1080000@3x3x3.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: newfs options for .75TB RAID 5 unit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Oct 2005 15:54:43 -0000 darren david wrote: > hey all- > > in the somewhat pending case that i may not be able to retrieve my data > from RAID 5 unit, I'm wondering what my best option is for blocksize on > a .75TB RAID 5 volume. does the 64k RAID stripe size have any impact on > these figures? It was previously set to the default( 16384 blocksize, > 2048 fragment ) without any noticeable perf issues, but i'm just > wondering if, well, size matters? ;) > > thanks, > darren david > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" > You shouldn't have any problems. Read about tunefs if you wish, it may help you. I have a 6x250gb array (1.25tb RAID5). FBSD 5.2.1 refused to support a filesystem larger than 1.0tb, so i chunked it into 2 partitions to get around that problem and then I mounted them back using mount_nullfs so it appears as though all dirs are on the same partition in a single directory. Not sure if the 1TB filesystem limit problem is unique to me or not, but you will be fine with your .75tb no question. -- Matt Virus ("veer-iss") http://www.mattvirus.net