[Gluster-users] disperse volume and its relation to xlators/cluster/ec
jayakrishnan.mm at gmail.com
Thu Feb 25 04:43:09 UTC 2016
How is the data fragmented ? what if a file size is more than the
fragment size? Can a fragment have data corresponding to 2 or more files ?
How the data is accessed basically ( file open ?) ? What is a
I have searched a lot of documents about glusterFS. None of these
are helpful to understand the glusterFS in detail (from the perspective
of writing a new translator),
Jeff Darcy's tutorial was helpful though.
Perhaps, am I missing something?
Can you point to some good stuffs ?
On Wed, Feb 17, 2016 at 4:24 PM, jayakrishnan mm <jayakrishnan.mm at gmail.com>
> Dear Xavi,
> Thanks a lot. That clarified my confusion.
> Best Regards
> On Wed, Feb 17, 2016 at 3:35 PM, Xavier Hernandez <xhernandez at datalab.es>
>> 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.
>> On 17/02/16 05:12, jayakrishnan mm wrote:
>>> Dear Xavier,
>>> I am trying to understand the disperse translator and its usage.
>>> , 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
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Gluster-users