From owner-freebsd-current Sat Nov 20 12:33:23 1999 Delivered-To: freebsd-current@freebsd.org Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by hub.freebsd.org (Postfix) with ESMTP id 0ABD315732 for ; Sat, 20 Nov 1999 12:33:04 -0800 (PST) (envelope-from j@uriah.heep.sax.de) Received: (from uucp@localhost) by sax.sax.de (8.9.3/8.9.3) with UUCP id VAA16340 for freebsd-current@freebsd.org; Sat, 20 Nov 1999 21:33:01 +0100 (CET) Received: (from j@localhost) by uriah.heep.sax.de (8.9.3/8.9.1) id VAA11454; Sat, 20 Nov 1999 21:24:53 +0100 (MET) (envelope-from j) Date: Sat, 20 Nov 1999 21:24:53 +0100 (MET) Message-Id: <199911202024.VAA11454@uriah.heep.sax.de> Mime-Version: 1.0 X-Newsreader: knews 0.9.8 Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) Organization: Private BSD site, Dresden X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E References: <199911160012.QAA16389@gndrsh.dnsmgr.net> From: j@uriah.heep.sax.de (J Wunsch) Subject: Re: FreeBSD 4.0 SCSI Tape Driver X-Original-Newsgroups: local.freebsd.current To: freebsd-current@freebsd.org Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG "Rodney W. Grimes" wrote: > Can you give me a model of a QIC drive that has the ``can't write 2 > FM's'' and I'll see if I can find one so that I can see this problem > first hand and propose a solution to it. The problem with QIC drives is that they only support writing at BOM or at EOD. So once you have recorded 2 FM's in order to mark your very own opinion of EOD (the actual EOD is behind those two FM's), you can't undo this upon a later attempt to append more data to the tape, you'll always end up with two filemarks inmidst the tape. You can't say ``just go to end-of-recorded-media, space backward over one filemark, and write here''. You'll get a `write append error'. Boom. I think this is way worse than the potential possibility of a vaporware SCSI tape drive that might not support a notion of a physical EOD... -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message