On Tue, 15 Apr 2008, Luke Scharf wrote:
>
> AFAIK, ext3 supports sparse files just like it should -- but it doesn't
> dynamically figure out what to write based on the contents of the file.

Since zfs inspects all data anyway in order to compute the block 
checksum, it can easily know if a block is all zeros.

For ext3, inspecting all blocks for zeros would be viewed as 
unnecessary overhead.

Bob
======================================
Bob Friesenhahn
[EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

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