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Not so. PostgreSQL, for example, implements transactional semantics without needing metadata undo.
Posted Mar 20, 2009 20:54 UTC (Fri) by butlerm (subscriber, #13312)
So of course you can implement meta data undo on any filesystem you please,
just as long as the meta data you are referring to is not the meta data of
the filesystem itself.
Posted Mar 21, 2009 18:00 UTC (Sat) by nix (subscriber, #2304)
(As for vacuuming, do it incrementally and the data volume pretty much
doesn't matter; you just work through it bit by bit. PostgreSQL scales to
silly data volumes already...)
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