From owner-freebsd-hackers Mon Jun 26 14:58:36 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id OAA06143 for hackers-outgoing; Mon, 26 Jun 1995 14:58:36 -0700 Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id OAA06120 for ; Mon, 26 Jun 1995 14:58:32 -0700 Received: from sax.sax.de by irz301.inf.tu-dresden.de with SMTP (5.67b+/DEC-Ultrix/4.3) id AA23803; Mon, 26 Jun 1995 23:58:29 +0200 Received: by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id XAA14451 for freebsd-hackers@freebsd.org; Mon, 26 Jun 1995 23:58:28 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.6.11/8.6.9) id WAA24055 for freebsd-hackers@freebsd.org; Mon, 26 Jun 1995 22:24:48 +0200 From: J Wunsch Message-Id: <199506262024.WAA24055@uriah.heep.sax.de> Subject: Re: scsi reprobing To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Mon, 26 Jun 1995 22:24:48 +0200 (MET DST) Reply-To: freebsd-hackers@freebsd.org (FreeBSD hackers) In-Reply-To: <199506261152.MAA00268@lambda> from "Paul Richards" at Jun 26, 95 12:51:42 pm Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Content-Length: 982 Sender: hackers-owner@freebsd.org Precedence: bulk As Paul Richards wrote: > > Does any of this actually work? Opening a device that wasn't on when the > system booted results in "device not configured messages". > > The super scsi device doesn't exist and isn't reference in the scsi(4) > manpage. For the super device, we will have to wait until Peter is back again. For the other devices, it's a chicken-and-egg problem. You cannot open a non-configured device, but as soon as you've got a single control device on a SCSI bus, you can fire up a `scsi -f ... -r -t ...' on it. It doesn't actually matter which device you are using (and it didn't since the day when Julian has been creating scsi(8)), so you can e.g. ``scsi -f /dev/rsd0.ctl -r -t 5'' in order to probe SCSI target 5 when there's only sd0 already online. I've been using those reprobes for more than two years now. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)