From owner-freebsd-questions Fri Feb 25 11:19:47 2000 Delivered-To: freebsd-questions@freebsd.org Received: from numerator.trivergent.net (numerator.trivergent.net [208.128.227.42]) by hub.freebsd.org (Postfix) with ESMTP id D81F537BA53 for ; Fri, 25 Feb 2000 11:19:41 -0800 (PST) (envelope-from carlk@carol.net) Received: from mulder.carol.net (mail.trivergent.net [208.128.231.84]) by numerator.trivergent.net (8.9.3/8.9.3) with ESMTP id OAA27523 for ; Fri, 25 Feb 2000 14:19:34 -0500 (EST) Received: from carol.net (root@dialin0308c.carol.net [208.238.200.23]) by mulder.carol.net (8.8.8/8.8.5) with ESMTP id OAA13953 for ; Fri, 25 Feb 2000 14:19:33 -0500 Message-ID: <38B6D577.FCBCE403@carol.net> Date: Fri, 25 Feb 2000 14:18:15 -0500 From: "Carl A. Kolasky" Organization: Crux X-Mailer: Mozilla 4.61 [en] (X11; I; Linux 2.2.12-20 i686) X-Accept-Language: en MIME-Version: 1.0 To: questions@freebsd.org Subject: Re: SC30/SC50 Tape driver References: <38B6D441.E2E0CC34@carol.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > I am presently in the startof writing a scsi tape driver for the > Onstream SC30 and SC50 scsi tape drive.First > blush it does not look good and need to seperate from the sa layer.I > have pulled over the scsi_sa.c layer as start point and would like to > see if I can go froward with it changing what needs to be done for these > tape drives..With the cam debug stuff in,it looks like the device can > not even do all the required commands.After that the tape surface and > writing to tape is way different then all the other scsi tapes. > I have a problem atthis point before I can go forward.It seems that > when some code layer grabs and with in a little time does an unload or > eject command.The cam layer show no debug info.Could you tell me what > layer might be probing the tape.Can I de-couple it form that layer and > if so how. > Also,after this,is there a method that I can stop the sa > interface(scsi_sa.c) form seeing this onstream device.Is there a bad > device list that I can add it to.??????????????????? > At some much latter point I will need maybe a new major numberfor > this device.Presently the driver registers on two of the resv local > Major number(bdev,cdev). > I would like an answer or contact that might save me some time.I'm > being pushed for time and do not have the time to unspool the code,but > will if it is the only way to get these answers. > > Thanks > Carl > > carlk@carol.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message