From owner-freebsd-questions@FreeBSD.ORG Wed Oct 19 18:13:06 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 BBE6316A41F for ; Wed, 19 Oct 2005 18:13:06 +0000 (GMT) (envelope-from darren@3x3x3.org) Received: from yak.fluid.com (yak.fluid.com [63.76.105.204]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7557D43D5A for ; Wed, 19 Oct 2005 18:13:06 +0000 (GMT) (envelope-from darren@3x3x3.org) Received: from dsl092-017-115.sfo4.dsl.speakeasy.net ([66.92.17.115]) by yak.fluid.com with esmtpsa (Exim 4.44 #1) id 1ESIMd-0000zW-FG; Wed, 19 Oct 2005 11:08:35 -0700 Message-ID: <43568CFB.4000609@3x3x3.org> Date: Wed, 19 Oct 2005 11:14:19 -0700 From: darren david User-Agent: Mozilla Thunderbird 1.0.2 (Windows/20050317) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Matt Virus References: <4355FBD4.1080000@3x3x3.org> <43566C00.8000805@gmail.com> In-Reply-To: <43566C00.8000805@gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd 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 18:13:06 -0000 Matt Virus wrote: > 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. Coolness. What was /your/ blocksize for your filesystem, and why did you choose it? darren