https://bugzilla.wikimedia.org/show_bug.cgi?id=27618

--- Comment #4 from Adam Wight <s...@ludd.net> 2011-03-18 06:45:44 UTC ---
Created attachment 8310
  --> https://bugzilla.wikimedia.org/attachment.cgi?id=8310
ROUGH

Not much to show yet, but in case someone wants to lend a hand...
My intention is that:
* each backup job records the arguments with which it was invoked
* an index entry is recorded for each page, giving its offset into the
compressed data being generated

Problems:
1) there is no convention for saving to a second file stream (the index file)
2) bz2 php library does not expose the libbz2.so "tell" function, nor could
that function work without flushing buffers.  Perhaps the recorded offset can
be addressed by bz2 chunk, then by uncompressed offset.

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