From owner-freebsd-questions Tue Jan 15 4:31:26 2002 Delivered-To: freebsd-questions@freebsd.org Received: from Mail6.nc.rr.com (fe6.southeast.rr.com [24.93.67.53]) by hub.freebsd.org (Postfix) with ESMTP id 711CA37B404 for ; Tue, 15 Jan 2002 04:31:21 -0800 (PST) Received: from there ([66.57.85.154]) by Mail6.nc.rr.com with Microsoft SMTPSVC(5.5.1877.687.68); Tue, 15 Jan 2002 07:31:15 -0500 Content-Type: text/plain; charset="iso-8859-1" From: Brian T.Schellenberger To: swear@blarg.net (Gary W. Swearingen), "Mike Meyer" Subject: Re: HOWTO -- backup onto CDRs? Date: Tue, 15 Jan 2002 07:30:45 -0500 X-Mailer: KMail [version 1.3] Cc: questions@freebsd.org References: <15426.33499.296182.78699@guru.mired.org> <15426.63500.847866.284422@guru.mired.org> In-Reply-To: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-ID: <001601531120f12FE6@Mail6.nc.rr.com> Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Monday 14 January 2002 01:31 pm, Gary W. Swearingen wrote: > "Mike Meyer" writes: > > I wouldn't recommend writing anything directly to the CD. That thought > > just bothers me. Maybe if I could get dump to write CD-size chunks > > direct to cdrecord and prompt for the next one, but even then... > > I wander if he just meant to avoid the mkisofs step. Is it ever > possible to write directly to the CD (successfully)? I doubt it. I'm not sure if I'm the "he" here (the conext got cut a little *too* much here methinks), but I meant to use dump to a temp area before using mkisofs + cdrecord/burncd. Though it is possible to skip the mkisofs entirely. > Or maybe he meant to avoid saving the archive to hard disk by piping > it to the CD burning program. I don't know if even the fastest system > could do that, but it's easy enough to test and should be safe enough > since the burning program will tell you if you don't feed it data fast > enough. I did this all the time under Linux; even with a P-450 it worked just fine as long as the system wasn't overtaxed (as in, load < 2), using the stdin feature of cdrecord. I tried with burncd under FreeBSD and had no success, though. Of course, cdrecord doesn't support stdin input so I had to set up a named pipe but I don't know why that would be a problem in and of itself. I just tried it once and then stopped trying to play with it, though, so I might have just done something wrong. It had the substantial (to my mind) drawback that it inhibits a proper progress report and that alone made me less motivated to try it. (When I did it under Linux I was so short on disk space that it was flat-out impossible for me to do it any other way, which motiviated me to try harder to get it to work.) > A NOTE ON "dump" USAGE: I see a problem with using dump in that the man > page says it doesn't dump files and directories with the "nodump" file > flag set. That seems to mean that to do a backup with confidence, one > would need to run "chflags" on everything one intends to dump. Not a > big problem if one remembers to do it; it just lengthens the process. This would normally be considered a feature. PS: Another drawback of dump is that I, for one, have been known to switch O/S's on a semi-regular basis, so an O/S-specific format naturally goes against the grain. But I'm probably committed to FreeBSD for the "forseeable future"; I now get hardware known to work with it rather than getting hardware and then trying Unixy O/S's 'til I find one that works, which was my former mode of operation. -- Brian T. Schellenberger . . . . . . . bts@wnt.sas.com (work) Brian, the man from Babble-On . . . . bts@babbleon.org (personal) http://www.babbleon.org -------> Free Dmitry Sklyarov! (let him go home) <----------- http://www.eff.org http://www.programming-freedom.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message