I created a replication set by adding two servers to an existing server with about 250 GB and having it replicate the data. After being in recovery state for a while we see the new server go into a state were CPU usage becomes very low, but the load-average goes to about 200 or more.

At this point is it impossible to shut down or kill mongod. kill -9 has no effect.

I also noticed that that I cannot cat any file in /proc/<pid> belonging to the mongod process.