From owner-freebsd-hackers Fri Jan 27 14:50:13 1995 Return-Path: hackers-owner Received: (from root@localhost) by freefall.cdrom.com (8.6.9/8.6.6) id OAA00199 for hackers-outgoing; Fri, 27 Jan 1995 14:50:13 -0800 Received: from hda.com (hda.com [199.232.40.182]) by freefall.cdrom.com (8.6.9/8.6.6) with ESMTP id OAA00191 for ; Fri, 27 Jan 1995 14:50:08 -0800 Received: (dufault@localhost) by hda.com (8.6.9/8.3) id RAA09638; Fri, 27 Jan 1995 17:49:51 -0500 From: Peter Dufault Message-Id: <199501272249.RAA09638@hda.com> Subject: Re: Help with SCSI development (fwd) To: phk@ref.tfs.com (Poul-Henning Kamp) Date: Fri, 27 Jan 1995 17:49:50 -0500 (EST) Cc: wollman@halloran-eldar.lcs.mit.edu, freebsd-hackers@FreeBSD.org In-Reply-To: <199501272012.MAA07301@ref.tfs.com> from "Poul-Henning Kamp" at Jan 27, 95 12:12:46 pm X-Mailer: ELM [version 2.4 PL24] Content-Type: text Content-Length: 1020 Sender: hackers-owner@FreeBSD.org Precedence: bulk Poul-Henning Kamp writes: > > > >> I'm planning to write software using Freebsd that will allow files to > > >> be striped over multiple disks. > > > > There is already software in 4.4-Lite which is designed specifically > > for this purpose, although it is named badly and probably would take a > > bit of porting work to get it up to speed. See /sys/dev/cd.c in a > > convenient 4.4-Lite tree. > > That stuff is a hack. > > I agree with Terry, this should be done "The Right Way". > Can I ask what may be a stupid question? When you call a strategy function you either chain it into the start queue or start the I/O and then return. Then you call biodone to block. What is the flaw in thinking that you can call a set of strategies and then a set of biodones? Peter -- Peter Dufault Real Time Machine Control and Simulation HD Associates, Inc. Voice: 508 433 6936 dufault@hda.com Fax: 508 433 5267 -- Formerly hd@world.std.com. E-mail problems? Tell hdslip@iii.net