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docs/data structures: add simple example compaction run

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Marian Beermann 2017-05-22 13:11:00 +02:00
parent 691c6adc04
commit f8c63f9a66
3 changed files with 6 additions and 0 deletions
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@ -176,6 +176,12 @@ a new segment, while superseded entries are omitted. After each segment an inter
commit is written to the new segment. Then, the old segment is deleted
(asserting that the reference count diminished to zero), freeing disk space.
A simplified example (excluding conditional compaction and with simpler
commit logic) showing the principal operation of compaction:
.. figure::
compaction.png
(The actual algorithm is more complex to avoid various consistency issues, refer to
the ``borg.repository`` module for more comments and documentation on these issues.)