Date: Thu, 26 Dec 1996 03:13:19 +0100 (MET) From: grog@lemis.de To: softweyr@xmission.com (Softweyr LLC) Cc: questions@FreeBSD.org (FreeBSD Questions) Subject: Re: Tape backup (was: another question for you?) Message-ID: <199612260213.DAA16709@freebie.lemis.de> In-Reply-To: <199612172242.PAA21103@xmission.xmission.com> from Softweyr LLC at "Dec 17, 96 03:42:35 pm"
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Softweyr LLC writes: > I advised: > % The cheapest and easiest way would be to buy another tape drive for the > % FreeBSD system. Seriously. > > To which you replied: >> okay...I took your advice..I just installed a HP C1536A SCSI DAT >> Drive. Kernel recognizes it as /dev/nrst0 ...I have a 90 meter DDS1 >> tape in it.. >> Now how do I back stuff up to it..? >> I presume that I use dump. > > dump, cpio, or tar. There is also a program called pax, which is > cpio and tar rolled into one. > >> but how..it doesn't seem to like me very much..and the documentation >> in the freebsd handbook is very sparce.. >> The manpage is semi-useful...Do i need to format the tape at all? I >> don't think so..but If I do..how would I do it? How do I tell dump >> the density of my tape? it doesnt' like my command line options.. >> If only I had an example...and example could go a long way.. => > > I've always used tar myself. To backup your entire system onto > a single DAT tape (if it'll fit), try: > > tar -cvf /dev/rst0 / > > This tells tar to (c)reate an archive, be (v)erbose about it, i.e. > print the filenames as they're added to the archive, on (f)ile > /dev/rst0. Agreed. I've never liked dump much, either. On a DDS tape, you'll find that the backup runs a whole lot faster if you use 64 kB blocks: # tar cvbf 128 /dev/rst0 / > Try reading the man pages on tar, pax, and dump. They're pretty > obtuse, but might give you some help. > > I also recommend that you RUN to the nearest bookstore and get get a > copy of _Essential System Administration_ from O'Reilly and Associates; > it will help greatly in your quest to become <fanfare here> > *SUPER-USER*. IMO Nemeth and Co are better. But I haven't got round to looking into the new edition. >> There is a manpage for st (SCSI tape controller) but the command >> isn't present on either of my two freebsd systems that I can find. > > That's odd. It should be there. I don't have FreeBSD up right now, so > I can look for you. I gotta get a little BSD box here at work... ;^) The man page is in section 4 of the manual, which describes special devices, not commands. Greg
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