What does the error message "feature set mismatch missing 1000000000000" in Ceph logs mean?

Solution Verified - Updated -

Issue

  • What does the following messages in Ceph client logs mean?
connect protocol feature mismatch, my 2fffffffffff < peer 12fffffffffff missing 1000000000000

Environment

  • Red Hat Ceph Storage 1.2
  • Red Hat Ceph Storage 1.2.3
  • Red Hat Ceph Storage 1.3
  • Inktank Ceph Enterprise 1.2
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

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