tree fb8819af1dba7ddea2ebe4df2e95b1a6cd2ec1ef
parent 183f392dbad1cd01acea1c5142567dd905406f47
author Jens Axboe <axboe@fb.com> 1411401727 -0600
committer Mohamad Ayyash <mkayyash@google.com> 1425693435 -0800

Basic support for dedupe

This adds and option, dedupe_percentage, that controls how many of
the write IO buffers are identical. For instance, if this is set:

dedupe_percentage=70

then 70% of the write IO buffers will have identical contents. The
specific contents are, as before, controlled by the various options
that set buffer contents or buffer compressibility.

Signed-off-by: Jens Axboe <axboe@fb.com>