Metadata support?

This is a newbie question. International Developer magazine (December 2003) in the UK talks about an upcoming new Linux kernel - 2.6. On page 41, it says "A file system feature that won't have as much up-front impact right now - but whose implications for future are extensive - is support for metadata." I am wondering what exactly they are indicating through "metadata". Is it the Dublin Core (http://dublincore.org/) related metadata work in XML framework? Or is it something to do with file system indexing and fast searching, etc. A pointer to some detailed discussion on this on any kernel related website would be very helpful.

Thanks.
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xtremebytes2002Asked:
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dorwardCommented:
Meta data is data about data, its a very wide ranging term.

You can store DC data about files in a file system (although probably not using an XML framework in this case, it would be stored in the file system), but there are plenty of other things you can store as well. Say you have some images, you can have meta data that describes their dimensions, the time they were taken, modifcations made to them, who took the image, and so on.

I've seen mention, although I can't find any reference right now, as to being able to access a file as a directory to get meta data. For example:

display /path/to/file.jpeg would display the image

but

ls /path/to/file.jpeg/ would list meta data items about the image (as if the image was a directory and each meta data item was a file in it)

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dorwardCommented:
recommendation: points to me
Karl Heinz KremerCommented:
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
Answered by dorward
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