+++ This bug was initially created as a clone of Bug #1566732 +++
Description of problem:
If a disperse volume has different brick versions, some operations done on the volume will generate EIO errors.
Version-Release number of selected component (if applicable): mainline
Steps to Reproduce:
REVIEW: https://review.gluster.org/19907 (libglusterfs: fix comparison of a NULL dict with a non-NULL dict) posted (#1) for review on release-3.13 by Xavi Hernandez
Release 3.13 is already EOL, so this patch won't be released. I'll close the bug.