Hi

After a clean database load a database would (should?) look like this,
if a random stab at the data is taken...

[8KB-m][8KB-n][8KB-o][8KB-p]...

The data should be fairly (100%) sequential in layout ... after some
days though that same spot (using ZFS) would problably look like:

[8KB-m][   ][8KB-o][   ]

Is this "pseudo logical-physical" view correct (if blocks n and p was
updated and with COW relocated somewhere else)?

Could a utility be constructed to show the level of "fragmentation" ?
(50% in above example)

IF the above theory is flawed... how would fragmentation "look/be
observed/calculated" under ZFS with large Oracle tablespaces?

Does it even matter what the "fragmentation" is from a performance perspective?
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