From owner-freebsd-hackers Tue Mar 27 16:22:36 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from wantadilla.lemis.com (wantadilla.lemis.com [192.109.197.80]) by hub.freebsd.org (Postfix) with ESMTP id C669D37B718; Tue, 27 Mar 2001 16:22:31 -0800 (PST) (envelope-from grog@lemis.com) Received: by wantadilla.lemis.com (Postfix, from userid 1004) id 920916A90D; Wed, 28 Mar 2001 09:52:30 +0930 (CST) Date: Wed, 28 Mar 2001 09:52:30 +0930 From: Greg Lehey To: fs@freebsd.org, hackers@freebsd.org Subject: Re: Vinum stripe size (was: tuning a VERY heavily (30.0) loaded server) Message-ID: <20010328095230.O1161@wantadilla.lemis.com> References: <20010320111144.A51924@peorth.iteration.net> <20010327171653.G1161@wantadilla.lemis.com> <20010327151517.A91684@dragon.nuxi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010327151517.A91684@dragon.nuxi.com>; from TrimYourCc@NUXI.com on Tue, Mar 27, 2001 at 03:15:17PM -0800 Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tuesday, 27 March 2001 at 15:15:17 -0800, David O'Brien wrote: > On Tue, Mar 27, 2001 at 05:16:53PM +0930, Greg Lehey wrote: >> No, there's no requirement for it to be a prime number. The only >> problem is that with 32 MB cylinder groups and a power of two stripe >> size and subdisk count, you end up with all the superblocks on one >> subdisk, > > The change I made to newfs to make "-c 22" the default, removes this > power-of-two issue. Correct? It certainly changes it. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message