Backing up to DVDs

Antti.Roppola at Antti.Roppola at
Fri Nov 8 13:39:27 EST 2002

We recently were quoted around that for an internal DVD-R
(Pioneer A05).

Bob's CD backup script would be pretty easy to change to
support DVD. Since it's all tarr'ed up, you'd get your
permissions being saved too. No terribly difficult to browse.


-----Original Message-----
From: Michael James [mailto:michael at]
Sent: Friday, 8 November 2002 1:07 AM
To: linux at
Subject: Backing up to DVDs

With the price of DVD drives falling below $700 and media at $5 per 4.7Gig
 that's a lot of Gigs before you have spent even the price of a tape drive.

Has anyone built a system around them?
Say fortnightly full backup/archives to DVD
 and incrementals to rewriteable CDs?

I had a go on a Mac, used mkisofs under Linux.
FTPed it across and burned it using Roxio but it stuffs the permissions.

Of course (if I'd thought about it) everything turns out unwriteable,
 but also everything turns out readable, even shadow etc.

 I can't just have a backup I can drop into a tray and cd into
 to see file contents, ownership and permissions.

Or could I? How about burning the ISO as a file.
Then mount it instead of the disk?
But maybe ISO doesn't handle writeable files, no reason it should.

Well what about tar then,
 no theoretical reason I can't "mount -t tarfs /cdrom/ /mnt/"

Do any tools exist like that?

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