[Bugs] [Bug 1140861] New: A new xattr is needed to store ec parameters

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1140861

            Bug ID: 1140861
           Summary: A new xattr is needed to store ec parameters
           Product: GlusterFS
           Version: mainline
         Component: disperse
          Assignee: gluster-bugs at redhat.com
          Reporter: xhernandez at datalab.es
                CC: bugs at gluster.org



Description of problem:

Current ec implementation uses a special matrix with a fixed stripe size. This
works fine, but most probably this will need to be changed or tweaked in the
future to add features or performance. Since any change to this data involves
changes in the encoding/decoding, it's necessary to store this information in
each file to be able to recover it using the right configuration.

To do so, it's necessary to create a new xattr that will store this information
and will allow backward compatibility.

Version-Release number of selected component (if applicable): master


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:

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