On Monday 07 October 2002 16:01, Alon Barzilai wrote:
> mount -t iso9660 -o ro 1.iso /mnt/disk1
> mount -t iso9660 -o ro 2.iso /mnt/disk1

This is called "union mount". Linux does not have this feature (I think BSD 
has it).

> I remember a few months ago someone metioned something similar here, but
> I could not find this message.

Here's the solution I use on IGLU's server. On IGLU, we wanted to mount all of 
RedHat ISOs into their standard directory structure, as it appears on 
RedHat's FTP site, to save disk space. It all worked out pretty well.

1. Mount the ISOs into different directories.
2. Use my "union" utility to consolidate the different directories into one 
single directory. It creates directories and symbolic links as necessary, so 
that the target directory almost doesn't take up any disk space.

Usage:
union source-dir1 source-dir2 source-dir2 ... target-dir

(Tip: If you want to offer those files via FTP, like we do, make the source 
directory paths relative -- because your FTP site doesn't begin at /)

You can get it from
http://toast.unwind.co.il/hacks/union

Share and enjoy!

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