Comment 0 for bug 1798081

ceph version 0.80.5
the reason that primary osd drop the secondary osd's subop reply message is because of
a bug that the message sequence number is truncated to unsigned 32 bit from unsigned 64 bit.

the bug is already reported in the upstream: https://tracker.ceph.com/issues/16122
and fixed at https://github.com/ceph/ceph/pull/9456

it's already backported to Jewel, but not to harmer