[Bugs] [Bug 1578273] New: data-mismatch after split-brain + add-brick

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1578273

            Bug ID: 1578273
           Summary: data-mismatch after split-brain + add-brick
           Product: GlusterFS
           Version: mainline
         Component: replicate
          Assignee: bugs at gluster.org
          Reporter: ravishankar at redhat.com
                CC: bugs at gluster.org



Description of problem:
    When add-brick is performed on a replica 2 subvolume that has a file in
    data split-brain, the current logic for post-op failure accounting
    (originally added to fix spurious cyclic split-brains) picks up one of
    the 2 bricks as source, heals it into the newly added brick and resets the
    afr xattrs on  all 3 bricks. But the brick that was not chosen as source
will
    still have different contents leading to silent data mismatch. The same
    problem is there even for metadata split-brain.

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