Date: Sat, 29 Jan 2005 12:00:04 +0000 From: Xian <ian@codepad.net> To: freebsd-questions@freebsd.org Subject: Re: Backup to CD-Rs and DVDs Message-ID: <200501291200.04666.ian@codepad.net> In-Reply-To: <41FAEC16.9000708@mindspring.com> References: <200501270100.56303.ml-freebsd-newbies@codepad.net> <200501272023.22673.imoore@picknowl.com.au> <41FAEC16.9000708@mindspring.com>
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On Saturday 29 January 2005 01:51, Carleton Vaughn wrote: > Ian Moore wrote: > > Anyway, to backup /usr directly to a dvd(+rw), I use the this command: > > dump -0 -uL -C16 -B4589840 -P 'growisofs -speed=4 -Z /dev/dvd=/dev/fd/0 ' > > /usr This gives you a dvd or series of dvds with the dump file on them. > > You can then boot from CD2 (live system) and use restore to restore the > > data. If the link above is the one I think it is, it gives you an example > > restore command. > > I'm in the same boat as Xian. I want to backup to DVD so I can upgrade to > 5.3. dump in 4.10 does not have a -P option, and growisofs says nothing > about handling spanning, so how do I span my dump over multiple DVDs? > > dump -h0 -B 4589840 -S /usr says I'm going to need 6.18 "tapes". I'm going > to crack open a beer and just pipe it, to see what happens. > > Then some day if all goes well I will split /usr into /usr and /usr/home, > 'cause this is ridiculous. > > Thanks. I have another machine running 4.9 (also without the -P option for dump) and the way I get round it is to create the dump on another disk in pieces then transfer them to another machine for burning. dump <usual args> -B<size of dvd> -f /home/usr.dump /usr /usr and /home are on different disks. Then when dump asks me if the next volume is ready I move /home/usr.dump to /home/usr/dump.1, then tell dump yes. And so on until dump has finished However I am having some issues with this. I transfer them to another machine, (checking the md5 of them is the same before and after transfer them), and test it with restore restore -Nxvb 2 -f usr.dump.1 and the first volume works fine, it says 'End-of-tape encountered'. I start the next volume and it tells me unexpected tape header abort? [yn] What could be doing this and how do I fix it? -- /Xian "Never put off until tomorrow what you can avoid altogether" unknown author
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