Date: Wed, 28 Oct 1998 14:05:44 -0800 (PST) From: David Wolfskill <dhw@whistle.com> To: freebsd-questions@FreeBSD.ORG, robert@mhi-tx.com Subject: Re: dump Message-ID: <199810282205.OAA13614@pau-amma.whistle.com> In-Reply-To: <3637903E.61F7@mhi-tx.com>
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>Date: Wed, 28 Oct 1998 15:44:31 -0600 >From: Robert <robert@mhi-tx.com> >How would I backup (and restore) more than one filesystem on a single >tape using dump. >is this a good idea? possible? recommended? It's possible; with reasonable care, it can be done OK. >I have a 2gig hp dat drive and some small filesystems (freebsd >2.2.5+2.2.6) I have tried doing them one after the other which seems to >work exept when I try to restore.. it only sees the first system dumped. >(seems logical because I would have to move the the beginning of the >next dump to read the header info off of it) I am not sure how to do >this ... I have looked at wt..etc.. but none seem position me at the >next dump header record. Each dump image is stored as a separate file (as long as you're using the no-rewind device; if you weren't, each dump image gets written beginning at the beginning of the tape... and naturally, the last one written is all that will be there). "mt -f /dev/nrst0 fsf [count]" advances "count" files (1 by default). Note the "n" in "/dev/nrst0" -- if you merely said "/dev/rst0," it would advance to the requested file, then promptly rewind the tape at close, so when you tried to read the dump image, you'd be back at the beginning. david -- David Wolfskill UNIX System Administrator dhw@whistle.com voice: (650) 577-7158 pager: (650) 371-4621 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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