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SubjectRe: Long `rm` times.
   Date: 	Wed, 26 May 1999 17:23:06 +0200
From: Helge Hafting <helge.hafting@c2i.net>

HPFS use position,length pairs. But its a tradeoff, not a clear win.

Consider the case of a huge file with lots of fragments. We want to
find block x in the last half of the file.

This is why any scheme using extents must also be combined with
appropriate algorithsm to avoid fragmentation. If you look at a typical
ext2 filesystem, most files aren't fragmented at all; allocating files
across multiple block groups and using preallocation really helps avoid
fragmentation issues.

- Ted

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