From owner-freebsd-fs  Tue Mar 27 15:15:49 2001
Delivered-To: freebsd-fs@freebsd.org
Received: from dragon.nuxi.com (trang.nuxi.com [209.152.133.57])
	by hub.freebsd.org (Postfix) with ESMTP
	id 888CE37B718; Tue, 27 Mar 2001 15:15:45 -0800 (PST)
	(envelope-from obrien@NUXI.com)
Received: (from obrien@localhost)
	by dragon.nuxi.com (8.11.3/8.11.1) id f2RNFII92593;
	Tue, 27 Mar 2001 15:15:18 -0800 (PST)
	(envelope-from obrien)
Date: Tue, 27 Mar 2001 15:15:17 -0800
From: "David O'Brien" <TrimYourCc@NUXI.com>
To: Greg Lehey <grog@lemis.com>
Cc: fs@freebsd.org, hackers@freebsd.org
Subject: Re: Vinum stripe size (was: tuning a VERY heavily (30.0) loaded server)
Message-ID: <20010327151517.A91684@dragon.nuxi.com>
Reply-To: fs@freebsd.org, hackers@freebsd.org
References: <20010320111144.A51924@peorth.iteration.net> <20010327171653.G1161@wantadilla.lemis.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5i
In-Reply-To: <20010327171653.G1161@wantadilla.lemis.com>; from grog@lemis.com on Tue, Mar 27, 2001 at 05:16:53PM +0930
X-Operating-System: FreeBSD 5.0-CURRENT
Organization: The NUXI BSD group
X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3  90 76 5D 69 58 D9 98 7A
X-Pgp-Rsa-Keyid: 1024/34F9F9D5
Sender: owner-freebsd-fs@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org

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?


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-fs" in the body of the message