> 3. Is backing up the partition, deleting it, then restoring the only way
> to deferment a ext3 partition?

Currently, yes. There was a defrag tool written way back in 1993 (!) and
doesn't seem anyone's seen fit to update it since. (That should tell you
something) Apparently it only worked with 1k sectors, with 4k being the
norm now, you're out of luck.

Though, with pretty much any filesystem, the rate of fragmentation
increases exponentially (and thus general performance drops) the less
free space you have. At around %80-%90 full, it starts to become quite
significant, depending on how busy your FS, file sizes, etc. Even the
best allocator can only do so much with no headroom to work with. (And
with a bad allocator, it only gets worse, *coughWindowscoughFATcough*)

With today's common 20gb to 200gb hard drives, that means leaving at
least 2gb to 20gb (!) free.
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