From owner-freebsd-questions  Mon May  1 05:23:52 1995
Return-Path: questions-owner
Received: (from majordom@localhost)
          by freefall.cdrom.com (8.6.10/8.6.6) id FAA22573
          for questions-outgoing; Mon, 1 May 1995 05:23:52 -0700
Received: from hda.com (hda.com [199.232.40.182])
          by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id FAA22567
          for <questions@FreeBSD.org>; Mon, 1 May 1995 05:23:48 -0700
Received: (dufault@localhost) by hda.com (8.6.9/8.3) id IAA21137; Mon, 1 May 1995 08:22:01 -0400
From: Peter Dufault <dufault@hda.com>
Message-Id: <199505011222.IAA21137@hda.com>
Subject: Re: formatting a scsi disk
To: bmk@dtr.com
Date: Mon, 1 May 1995 08:22:01 -0400 (EDT)
Cc: john@starfire.mn.org, questions@FreeBSD.org
In-Reply-To: <199505011151.EAA14572@dtr.com> from "bmk@dtr.com" at May 1, 95 04:51:29 am
X-Mailer: ELM [version 2.4 PL24]
Content-Type: text
Content-Length: 2001      
Sender: questions-owner@FreeBSD.org
Precedence: bulk

bmk@dtr.com writes:
> 
> 
> > bmk@dtr.com writes:
> > > 
> > > Can't get it to work here, any clues?
> 
> > It turns out that commands with no data have never worked via "scsi"
> > (yikes).  That is fixed in -current, and I'm on to two new problems:
> 
> > 1. We need to be able to specify the timeout (the default is 2
> > seconds, which is not going to work well for formatting your disks)
> 
> > 2. We need to account for disks that can't be opened by the disk driver
> > before formatting.
> 
> So... I guess my next question is how can I reformat a problematic SCSI
> disk since I'm running SNAP-0412 and not current.  The controller is a
> Buslogic 445 - and they don't provide a SCSI format utility.
> 
> If it's necessary, I can format the disk on an Adaptec 1542 (which does
> have a formatter), but I'd rather not do that, since it'd involve
> disassembling two machines.

Try this.  It should work if you can open the disk.  If you can't
you'll have to either upgrade to -current when I fix that problem (and I
haven't yet) or you'll have to use your 1542.

This will do a "Test Unit Ready".
You have to change the "0 0 0 0 0 0" to "4 0 0 0 0 0" to get a format.

Let me know how it works out.

#include <stdlib.h>
#include <sys/scsiio.h>
#include <errno.h>
#include <sys/file.h>

#include <scsi.h>

int main(int argc, char *argv[])
{
	int fid;
	scsireq_t *scsireq;

	if (argc != 2) {
		fprintf(stderr, "Usage: %s device\n", argv[0]);
		exit(-1);
	}

	if ( (fid = scsi_open(argv[1], O_RDWR)) == -1) {
		perror(argv[1]);
		exit(errno);
	}

	scsireq = scsireq_build(scsireq_new(), 0, 0, 0,
	"0 0 0 0 0 0",	/* Change to "4 0 0 0 0 0" for format */
	0);
	scsireq->timeout = 20 * 60 * 1000;	/* 20 minutes in ms */

	if (scsireq_enter(fid, scsireq) == -1) {
		scsi_debug(stderr, -1, scsireq);
		exit(errno);
	}

	exit(0);
}



-- 
Peter Dufault               Real Time Machine Control and Simulation
HD Associates, Inc.         Voice: 508 433 6936
dufault@hda.com             Fax:   508 433 5267