Will,
This issue in the tracker has an explanation of what is going on:
http://tracker.ceph.com/issues/17386
So the encoding change caused the old OSDs to start requesting full OSDMap
updates instead of incremental ones.
I would still like to know the purpose of changing the encoding so late
Just went through this upgrading a ~400 OSD cluster. I was in the EXACT spot
you were in. The faster you can get all OSDs to the same version as the MONs
the better. We decided to power forward and the performance got better for
every OSD node we patched.
Additionally I also discovered your
