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We finished upgrading the slave postgresql database to the dcache head node from sl6 to centos7. ZFS is used to host the postgresql database, and we upgradedthe postgresql to 10-10.6 from 10-10.5 for both the host and slave nodes. 

We built the 1.8.2 openafs rpms  on the centos 7.5 node.  The new openafs  client (1.8.2) is running well on the centos 7.5 node, we plan to test it on the SL6/7 nodes.