From owner-freebsd-current Tue Nov 16 7:36:22 1999 Delivered-To: freebsd-current@freebsd.org Received: from feral.com (feral.com [192.67.166.1]) by hub.freebsd.org (Postfix) with ESMTP id 91D66150E8 for ; Tue, 16 Nov 1999 07:36:09 -0800 (PST) (envelope-from mjacob@feral.com) Received: from beppo.feral.com (beppo [192.67.166.79]) by feral.com (8.8.7/8.8.7) with ESMTP id HAA06967; Tue, 16 Nov 1999 07:36:29 -0800 Date: Tue, 16 Nov 1999 07:36:29 -0800 (PST) From: Matthew Jacob Reply-To: mjacob@feral.com To: Greg Lehey Cc: "Rodney W. Grimes" , current@FreeBSD.ORG Subject: Re: FreeBSD 4.0 SCSI Tape Driver In-Reply-To: <19991115233605.10530@mojave.sitaranetworks.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > > > > Sorry, no. When you write a tape with these devices there's always a > > leading erased area. That's why if you overwrite the front a tape you > > can't skip past this area to recover data you really need. A misfeature of > > modern technology. > > Is this anchored in the standards? What about DLT? What about future > drives? I certainly wouldn't rely on anything that isn't guaranteed > to stay that way. What happens if I write a tape on FreeBSD and read > it in on System V? The whole point of what I'm trying to is to conform to other systems. I wouldn't do it if it added to interoperability problems. > > >> In your other message you talk about the driver getting 2 residuals > >> in a row, well, unless you write the 2 EOF's you won't always get that... > >> depends on if the tape drive does it automagically (which many newer > >> drives do, they write 2 eof's and backspace over 1 of them for you when > >> ever you tell them to write EOF, the drive itself uses 2 EOF's to > >> determine logical EOT :-)). > > > > I repeat what I said in other mail- can you actually show me a tape drive > > where what I propose really doesn't work? > > I think this question is the wrong way round. Apparently. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message