Date: Mon, 26 Nov 2001 11:33:37 +0000 (GMT) From: Jan Grant <Jan.Grant@bristol.ac.uk> To: Anthony Atkielski <anthony@freebie.atkielski.com> Cc: Scott Mitchell <scott.mitchell@mail.com>, Wilko Bulte <wkb@freebie.xs4all.nl>, FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: Time for my first backup, how do I install a DDS drive?? Message-ID: <Pine.GSO.4.31.0111261128190.101-100000@mail.ilrt.bris.ac.uk> In-Reply-To: <004001c175e8$26b827b0$0a00000a@atkielski.com>
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On Sun, 25 Nov 2001, Anthony Atkielski wrote: > Wilko hit the problem in a separate e-mail: I had to have a tape in > the drive! Now I'm full of nostalgia--I haven't had to worry about > actually mounting tapes on drives since the days when the tape was > on an open reel! > > Anyway, once I put a tape in the drive, the mt command worked fine. > Now I need to try my first backup. > > Some questions that I couldn't find clear answers for, though: > > 1. Will dump backup files that are locked by readers? What about > files locked by writers? Yes, and yes. All file locks are advisory, pretty much; this is in contrast to NT (where you get the problems you mention). > 2. If the answer to question 1 is "no," how can I backup the root > filesystem or other filesystems that always have some files > allocated to someone? Well, you _can_ just dump them. It depends on what files are open, and by what; if you've got a database in a non-quiescent state you might want to switch it to journalling-only mode for the duration of the backup (or whatever the procedure is for hot backups) and switch it back afterwards. The trick to this is to try some restores while you're getting this worked out (to make sure everything you expect to be restored is) - you don't need to restore directly to the root, you can stick a copy somewhere. And, of course, to run periodic random restores to ensure everything is working.* jan * You don't need to be told this, of course, but it's worth saying anyway. -- jan grant, ILRT, University of Bristol. http://www.ilrt.bris.ac.uk/ Tel +44(0)117 9287088 Fax +44 (0)117 9287112 RFC822 jan.grant@bris.ac.uk Theoremhood is positively decidable. It just takes time at least exponential in the length of the proof. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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