From owner-freebsd-fs Wed Oct 30 05:52:05 1996 Return-Path: owner-fs Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id FAA22627 for fs-outgoing; Wed, 30 Oct 1996 05:52:05 -0800 (PST) Received: from in1.csie.ncu.edu.tw (root@in1.csie.ncu.edu.tw [140.115.50.1]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id FAA22577 for ; Wed, 30 Oct 1996 05:51:53 -0800 (PST) Received: from dslab.dslab (cjs@dslab.csie.ncu.edu.tw [140.115.50.80]) by in1.csie.ncu.edu.tw (8.6.10/8.6.5) with SMTP id VAA22557 for ; Wed, 30 Oct 1996 21:51:30 +0800 Received: by dslab.dslab (4.1/SMI-4.1) id AA19722; Wed, 30 Oct 96 21:53:30 CST Date: Wed, 30 Oct 96 21:53:30 CST From: cjs@dslab.csie.ncu.edu.tw (Chi-So Chen) Message-Id: <9610301353.AA19722@dslab.dslab> To: freebsd-fs@FreeBSD.ORG Subject: unscribe Sender: owner-fs@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk unscribe freebsd-fs From owner-freebsd-fs Fri Nov 1 03:56:21 1996 Return-Path: owner-fs Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id DAA21726 for fs-outgoing; Fri, 1 Nov 1996 03:56:21 -0800 (PST) Received: from pluscom.cronyx.ru (gw.rinet.ru [194.87.171.65]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id DAA21717 for ; Fri, 1 Nov 1996 03:56:11 -0800 (PST) Received: by pluscom.cronyx.ru id OAA13154; (8.6.11/vak/1.9) Fri, 1 Nov 1996 14:55:18 +0300 Date: Fri, 1 Nov 1996 14:55:18 +0300 From: marck@pluscom.cronyx.ru (Dmitry Morozovsky) Message-Id: <199611011155.OAA13154@pluscom.cronyx.ru> To: freebsd-fs@freebsd.org Subject: (fwd) ccd Q Newsgroups: freebsd.fs Sender: owner-fs@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Newsgroups: freebsd.fs Path: pluscom!gw.rinet.ru!marck From: marck@gw.rinet.ru (Dmitry Morozovsky) Subject: ccd Q X-Newsreader: TIN [version 1.2 PL2] Sender: usenet@news.rinet.ru (Superuser) Nntp-Posting-Host: gw.rinet.ru Organization: A/O Plus & Cronyx Ltd. Internet Node Message-ID: Date: Wed, 30 Oct 1996 15:54:53 GMT Hello there. Can anybody answer me to the following simple questions: 1. is there any [dis]advantage of using different size disks to be joined together as a ccd? 2. is using IDE disks for ccd good or bad idea? More precisely: I've got some disks, IDE and SCSI, different sizes, more or less useful as standalone. I plan to test ccd for our newsserver with minimal expences. What should I do? -- Sincerely, D.Marck ======================================================================== === D.Marck --- Dmitry Morozovsky --- marck@rinet.ru --- Wild Woozle === ======================================================================== -- Sincerely, D.Marck ======================================================================== === D.Marck --- Dmitry Morozovsky --- marck@rinet.ru --- Wild Woozle === ======================================================================== From owner-freebsd-fs Fri Nov 1 04:21:05 1996 Return-Path: owner-fs Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id EAA24543 for fs-outgoing; Fri, 1 Nov 1996 04:21:05 -0800 (PST) Received: from dfw-ix6.ix.netcom.com (dfw-ix6.ix.netcom.com [206.214.98.6]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id EAA24531 for ; Fri, 1 Nov 1996 04:21:01 -0800 (PST) Received: from silvia.HIP.Berkeley.EDU (ala-ca19-01.ix.netcom.com [205.187.212.33]) by dfw-ix6.ix.netcom.com (8.6.13/8.6.12) with ESMTP id EAA21176; Fri, 1 Nov 1996 04:20:29 -0800 Received: (from asami@localhost) by silvia.HIP.Berkeley.EDU (8.8.2/8.6.9) id EAA03017; Fri, 1 Nov 1996 04:20:26 -0800 (PST) Date: Fri, 1 Nov 1996 04:20:26 -0800 (PST) Message-Id: <199611011220.EAA03017@silvia.HIP.Berkeley.EDU> To: marck@pluscom.cronyx.ru CC: freebsd-fs@FreeBSD.ORG In-reply-to: <199611011155.OAA13154@pluscom.cronyx.ru> (marck@pluscom.cronyx.ru) Subject: Re: (fwd) ccd Q From: asami@FreeBSD.ORG (Satoshi Asami) Sender: owner-fs@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk By the way, "freebsd-fs" is not an appropriate place to ask such questions. ccd is a device driver that implements a virtual disk, and not a filesystem. * 1. is there any [dis]advantage of using different size disks to be joined * together as a ccd? I don't think the size matters that much, but different speed (MB/s) seems to screw up the performance real badly. * 2. is using IDE disks for ccd good or bad idea? Never tried it. * More precisely: I've got some disks, IDE and SCSI, different sizes, * more or less useful as standalone. * I plan to test ccd for our newsserver with minimal expences. * What should I do? If you just want to test, as in see if it works, experience with the commands and setup, that's ok of course. If you want to do any serious performance measurements/tuning, you can only do that with the exact set of disks you are going to use for the news server. Satoshi