[ILUG] Alternative filesystems on a DVD

[Malcolm Tyrrell]

> |  mkisofs error: '/veryverylongname1 and '/veryverylongname2 have the same Rock
> |  Ridge name '_VERY000.;1'
> 
> ah!  I've only c.10 names ≥ 100 chars, longest 126,
> generally rather different (and am not sure ATM if
> they are file- or dir-names).  all of which suggests
> why I've never seen this failure.
>
> I concur with yer guess it's a mkisofs(1) problem but
> have no actual proof/data one way or the other.

Here's a sample session generates the problem for me:

$mkdir Temp
$cd Temp
$mkdir Dir1 Dir2
$touch Dir1/veryLongFilenameIsntIt
$touch Dir2/veryLongFilenameIsntIt
$ mkisofs --version
mkisofs 2.01.01a03-unofficial-iconv (i686-pc-linux-gnu)
$mkisofs -o image.iso -R *
INFO:   ISO-8859-15 character encoding detected by locale settings.
        Assuming ISO-8859-15 encoded filenames on source filesystem,
        use -input-charset to override.
Using veryL000.;1 for  /veryLongFilenameIsntIt (veryLongFilenameIsntIt)
mkisofs: Error: 'Dir2/veryLongFilenameIsntIt' and 'Dir1/veryLongFilenameIsntIt' have the same Rock Ridge name 'veryLongFilenameIsntIt'.
mkisofs: Unable to sort directory

Malcolm.