From owner-freebsd-hardware Sat Nov 4 08:58:39 1995 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id IAA06536 for hardware-outgoing; Sat, 4 Nov 1995 08:58:39 -0800 Received: from panix3.panix.com (panix3.panix.com [198.7.0.4]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id IAA06527 for ; Sat, 4 Nov 1995 08:58:34 -0800 Received: (from jbrann@localhost) by panix3.panix.com (8.7/8.7/PanixU1.3) id LAA15426 for freebsd-hardware@freebsd.org; Sat, 4 Nov 1995 11:58:32 -0500 (EST) From: John Brann Message-Id: <199511041658.LAA15426@panix3.panix.com> Subject: Nasty SCSI tape problem To: freebsd-hardware@freebsd.org Date: Sat, 4 Nov 1995 11:58:32 -0500 (EST) X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hardware@freebsd.org Precedence: bulk Hi, I have a Conner CTMS tape drive. This is a SCSI device which uses high density QIC-type cartridges which hold 1.6 or 2Gb. I have an Adaptec 2940/PCI SCSI controller which runs the hard disk, tape and CDROM. The system has no IDE. I'm running 951020-SNAP. I'd like to use 'dump' to make backups, so I was experimenting with it, but having problems persuading it to store my 700Mb /usr partition on only one tape. For some reason the calculations of number of blocks / blocksize don't seem sensible. Anyway, after 'dump' told me how many tapes I was going to need, I hit CTRL-C to abort. At this point the disk light came on and the whole system gradually froze until it totally stopped. Using the reset button started up the usual BIOS boot cycle - but before the point at which the BIOS tells me that the disk drive is drive C: and proceeds to boot from it, the system hung up - the disk light flickered intermittently, but nothing else happened. After about 2 minutes I powered the system down, said a short prayer, and switched it on again. Everything came up without trouble. I should add that 'tar' works fine, easily storing the /usr partition on a single tape. I know this fits into the 'Doctor, it hurts when I do this... well don't do that then' category of problems, but I would really like to know what's going on here. Any ideas? John -- "I don't know what I want, but I want it now!" Sir Henry Rawlinson. John Brann -- jbrann@panix.com jbrann@newparadigm.com