From owner-freebsd-current Mon Dec 1 13:30:05 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id NAA20817 for current-outgoing; Mon, 1 Dec 1997 13:30:05 -0800 (PST) (envelope-from owner-freebsd-current) Received: from ns.mt.sri.com (sri-gw.MT.net [206.127.105.141]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id NAA20806 for ; Mon, 1 Dec 1997 13:30:02 -0800 (PST) (envelope-from nate@mt.sri.com) Received: from mt.sri.com (rocky.mt.sri.com [206.127.76.100]) by ns.mt.sri.com (8.8.8/8.8.8) with SMTP id OAA22672; Mon, 1 Dec 1997 14:29:59 -0700 (MST) (envelope-from nate@rocky.mt.sri.com) Received: by mt.sri.com (SMI-8.6/SMI-SVR4) id OAA12636; Mon, 1 Dec 1997 14:29:57 -0700 Date: Mon, 1 Dec 1997 14:29:57 -0700 Message-Id: <199712012129.OAA12636@mt.sri.com> From: Nate Williams MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: "John S. Dyson" Cc: nate@mt.sri.com (Nate Williams), current@FreeBSD.ORG Subject: Re: FYI: usage of new AIO calls In-Reply-To: <199712012125.QAA04181@dyson.iquest.net> References: <199712012109.OAA12464@mt.sri.com> <199712012125.QAA04181@dyson.iquest.net> X-Mailer: VM 6.29 under 19.15 XEmacs Lucid Sender: owner-freebsd-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > > > What is a VCHR device? You mention it quite a lot in the commit > > > > messages, but I have no idea what it is, unless it's like a acronym > > > > cross combining VHS and VCR. :) > > > > > > RAW disk I/O is an example. > > > > But, what is it? Raw disk I/O is an example of many things unrelated to > > VCHR, so telling me an example of something still doesn't tell me what a > > VCHR device is. > > I am surprised, do you really not know? I really don't know what VCHR is. I know what raw disk I/O is, but raw disk I/O is an example of many things, so I want to know precisely what VCHR is, not what are examples of it. Example, if you didn't know what Nate's new acronym 'DSM' was, and I said "floppy disks are an example of it", you still wouldn't know what it was. It could be a form-factor, a type of controller, or any number of things. Giving an example of something that is 'VCHR' doesn't explain what VCHR is. Nate