Looking for multi-DVD spanning archiver

[Tim]

On Sat, 2010-06-05 at 21:24 -0500, Robert G. (Doc) Savage wrote:
> I want to be able to copy that directory with all its subordinate
> directories, files, ownerships, permissions, etc. onto a minimum
> number of DVDs. Ideally I'd want to pop all those discs into a DVD
> drive on a new machine and use 'cp -a' to recreate the .../Everything
> directory.

A problem with trying to do /that/ simply is the differences between
file systems on the hard drive and the DVD.  The file and directory
permissions may change (typically, you'll find restored files and
directories might be read-only, and files being executable, because
that's how they were on the DVD, and the copying process keeps them the
same), likewise for ownership (DVDs don't support different users and
groups) and SELinux contexts.

Generally, backups need to use some form of container that understands
those things, and can restore them with the file.  The tarball being the
traditional technique.

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