Re: [gentoo-user] DVD and large files

[Dale <dalek1967@bellsouth.net>]

Joerg Schilling wrote:
> Volker Armin Hemmann <volker.armin.hemmann@tu-clausthal.de> wrote:
>
>   
>>> Well, it seems tar can not handle 4.7Gb files any way.  I'm not sure why
>>> but it seems happy with 2.2Gb files.  Anybody know about the upper
>>> limits on tar?
>>>
>>>       
>> emm. It should be handle to at least 8gb. And since I use tar to write to my 
>> 280gb tapelib ... and this guy used a 21gb tarball for his tests:
>> http://bulk.fefe.de/lk2006/bench.html
>>
>> you are doing something wrong.
>>     
>
> Well, quoting a troll like fefe is not a good idea too. The page is full of 
> nonsense. OK, it at least mentions a 21 GB tar archive but not a tar archive
> with a 21 GB file inside.
>
> The historic tar archive format supports single files up to 8 GB in tar 
> archives. Since POSIX.1-2001, the extended tar archive format (called "pax")
> has no size limitations.
>
> Linux typically does not come with "tar" but with a tar clone called GNU tar 
> that by default does not write standard compliant archives but it does not have 
> a 4.7 GB limit.
>
> Putting tar archives directly on CD/DVD media works, but it may confuse people.
> When discussing the best way for putting large files on DVDs, you should take 
> into account that people who insert a medium that does not get automounted 
> typically believe that there is a problem with the medium.
>
> This is why I added support for files > 4 GB to mkisofs.
>
> Jörg
>
>   

How did you "add" support for that?  Are you talking about the program 
itself or a USE flag?

Dale

:-)  :-)
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