Date: Wed, 3 Nov 2004 01:32:54 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Jonathon McKitrick <jcm@FreeBSD-uk.eu.org> Cc: freebsd-questions@freebsd.org Subject: Re: Question about ISO filesystems and CD-R's Message-ID: <Pine.BSF.3.96.1041103011325.20903A-100000@gaia.nimnet.asn.au> In-Reply-To: <20041102134750.GA58940@dogma.freebsd-uk.eu.org>
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On Tue, 2 Nov 2004, Jonathon McKitrick wrote: > On Wed, Nov 03, 2004 at 12:39:00AM +1100, Ian Smith wrote: > : but you can keep on adding further ISO images to a CD-R (or CD-RW) until > : it's full, using mkisofs + burncd at least. Very handy here for certain > : types of backups, especially on a remote box visited weekly. > > Ah, that's exactly what I'm looking for. I bought a bunch of those > mini-CD-R's, thinking I didn't want to waste a regular CD-R to backup 100 > megs of my laptop files. But if I can keep dumping iso's from mkisofs onto > the same CD-R, effectively erasing it and adding a new one and just taking > up more space cumulatively, then I can keep the CD-R in the drive, run > backups every week, and only replace it when it is full, right? Right, except it doesn't 'effectively erase' existing files on the CD-R; all of the files added to each session appear when you mount it. Hmm, I think I've only ever appended unique files so far; I suppose that the latest version of any duplicate pathname would be what you'd get back, but you might want to confirm that assumption. > : My cdappend script's full of paranoid parameter and error checking and > : such, but is based on this simple and likely more illustrative one: > > Thanks for the script. I'll put it to good use. No worries. I'll mail you my larger, more paranoid version offlist. Cheers, Ian
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