From owner-freebsd-hackers Tue Mar 27 16:39:13 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from fw.wintelcom.net (ns1.wintelcom.net [209.1.153.20]) by hub.freebsd.org (Postfix) with ESMTP id 64F5737B71D; Tue, 27 Mar 2001 16:39:03 -0800 (PST) (envelope-from bright@fw.wintelcom.net) Received: (from bright@localhost) by fw.wintelcom.net (8.10.0/8.10.0) id f2S0cXP18924; Tue, 27 Mar 2001 16:38:33 -0800 (PST) Date: Tue, 27 Mar 2001 16:38:33 -0800 From: Alfred Perlstein To: Greg Lehey Cc: Brandon Gale , "Michael C . Wu" , dillon@FreeBSD.ORG, fs@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: Vinum stripe size (was: tuning a VERY heavily (30.0) loaded server) Message-ID: <20010327163833.O9431@fw.wintelcom.net> References: <20010327181141.H1161@wantadilla.lemis.com> <20010328095143.N1161@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: <20010328095143.N1161@wantadilla.lemis.com>; from grog@lemis.com on Wed, Mar 28, 2001 at 09:51:43AM +0930 X-all-your-base: are belong to us. Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG * Greg Lehey [010327 16:21] wrote: > On Tuesday, 27 March 2001 at 17:59:23 -0500, Brandon Gale wrote: > >>> Do you think it'd be worth it to have vinum carp about what may > >>> be a non optimal stripe size? > >>> > >>> "Warning N is probably a bad idea for a stripe size, see docs" > >> > >> Only if it can recognize the fact correctly. > > > > How about even having vinum recommend something? > > I'm open to code suggestions. The problem is that by the time you > create it, it's too late. That's not true. By the time you've newfs'd it, stored data on it and deployed it into production it's too late. Right after you make the volume is a good time to print out a little banner telling them to check the docs, something like: "WARNING: selecting a stripe size can be tricky, you really should see the vinum(8) manpage specifically the section about FOO for suggestions for optimal stripe sizes." Or something like that. You're the writer Grog, you should be better at this than us. :) -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] Daemon News Magazine in your snail-mail! http://magazine.daemonnews.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message