From this approach that is what is useful (I think) to get we should start and
https://bugzilla.novell.com/show_bug.cgi?id=886362
https://bugzilla.novell.com/show_bug.cgi?id=886362#c3
--- Comment #3 from Diego Ercolani 2014-07-24 14:31:42 UTC ---
I think the approach should be different.
Compression and deduplication are functionality that enhance artificially the
available space but we face with a real world where you have limited spaces.
If I have a partition with 1 GB free I could generate more "virtual space" with
deduplication and all... but I have only 1 GB (worst case without metadata and
indirection).
If I use the df to ask about available space I need to be answered with 1GB.
If BTRFS need to periodically "optimize" his data structure, It shoud do but
this will (hopefully) free real space that will be (hopefully) more virtual
space.
put in real world target.
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