Date: Fri, 27 Jan 1995 17:49:50 -0500 (EST) From: Peter Dufault <dufault@hda.com> To: phk@ref.tfs.com (Poul-Henning Kamp) Cc: wollman@halloran-eldar.lcs.mit.edu, freebsd-hackers@FreeBSD.org Subject: Re: Help with SCSI development (fwd) Message-ID: <199501272249.RAA09638@hda.com> In-Reply-To: <199501272012.MAA07301@ref.tfs.com> from "Poul-Henning Kamp" at Jan 27, 95 12:12:46 pm
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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
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