Hi jayakrishnan,
the old implementation was not finally accepted to be included in main
glusterfs tree, so it was rewritten in what now is known as ec.
disperse is an alias for ec. They are the same. The algorithm
implemented is Reed-Solomon. It's really similar to ida (we could say
that ida is a specific implementation of a Reed-Solomon code).
Almost all basic functionality in old code is implemented in new ec in
some way, though not using the same approaches. Anyway the latest
implementation is way more stable and maintained, while the old code has
been abandoned and should not be used.
Regards,
Xavi
On 17/02/16 05:12, jayakrishnan mm wrote:
Dear Xavier,
I am trying to understand the disperse translator and its usage.
From
https://lists.gnu.org/archive/html/gluster-devel/2014-01/txttzloLYIJOh.txt
, I see there are four components namely gfsys,dfc,ida and heal
which needs to be compiled with GlusterFS main source code.
I am confused this with xlator/cluster/ec. What is the relationship
between this and the disperse volume components mentioned earlier ?
Is xlator/cluster/ec is erasure coding (ec) translator
implementation in glusterFS ? If yes, which algorithm it implements ? (
I know disperse volume implements IDA)
Pls. help
Best Regards
JK
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