jerasure plugin
Introduction
The parameters interpreted by the jerasure plugin are:
ceph osd erasure-code-profile set myprofile \
directory=<dir> \ # plugin directory absolute path
plugin=jerasure \ # plugin name (only jerasure)
k=<k> \ # data chunks (default 2)
m=<m> \ # coding chunks (default 2)
technique=<technique> \ # coding technique
The coding techniques can be chosen among reed_sol_van, reed_sol_r6_op, cauchy_orig, cauchy_good, liberation, blaum_roth and liber8tion.
The src/erasure-code/jerasure directory contains the
implementation. It is a wrapper around the code found at
https://github.com/ceph/jerasure
and https://github.com/ceph/gf-complete , pinned to the latest stable
version in .gitmodules. These repositories are copies of the
upstream repositories http://jerasure.org/jerasure/jerasure and
http://jerasure.org/jerasure/gf-complete . The difference
between the two, if any, should match pull requests against upstream.
Note that as of 2023, the jerasure.org web site may no longer be
legitimate and/or associated with the original project.