Date: Sun, 19 Jun 2005 22:50:33 -0400 From: Mike Tancsa <mike@sentex.net> To: "Andrew L. Gould" <algould@datawok.com> Cc: freebsd-questions@freebsd.org Subject: Re: 3G file burns to -514M file on DVD-R Message-ID: <8uacb116unmkqjsnuoubaoj9f5ebq8iiaj@4ax.com> In-Reply-To: <200506191828.07064.algould@datawok.com> References: <20050619141506.1222993f@localhost> <200506191828.07064.algould@datawok.com>
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On Sun, 19 Jun 2005 18:28:06 -0500, in sentex.lists.freebsd.questions >> > >> > Any ideas or advice? >> >> Split your backup file before creating the iso. >> >> At the moment FreeBSD can't handle big files on isofs. >> If I remember correctly, big means > 1 GB, but I'm not sure. >> >> You should still be able to extract the file with isoinfo >> from the cdrtools port. >> >> Fabian > >Once I've burned the DVD, how can I rejoin the files created using the=20 >-split-output option so that I can reload the database from the dump=20 >file? The man pages for mkisofs, isoinfo and split weren't very=20 >helpful in this regard. On the subject of DVD backups, I have found them to be somewhat lossy over time. For my large database backups, I use rar out of the ports and add recovery records in the archive (-rr) and and split them using its volume feature. I also use par2 to further add redundancy and it has saved my ass a couple of times when I went to get a backup from the year before. from a script I use /usr/local/bin/rar a -r -v45M -rr -p$PASS /backup/root/iso/acctDB.rar /sql-mnt/ /usr/local/bin/par2create -r20 /backup/root/iso/parfiles.par2 /backup/root/iso/*.rar The databases compress down to about 3G on the DVDs across 45MB files. par2 then creates recovery files that allow for upto 20% damage to the DVD. To restore the files, rar x acctDB.rar ---Mike -------------------------------------------------------- Mike Tancsa, Sentex communications http://www.sentex.net Providing Internet Access since 1994 mike@sentex.net, (http://www.tancsa.com)
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