While attempting to reshard a collection in the https://github.com/mongodb/genny/blob/master/src/workloads/sharding/ReshardCollection.yml workload we experienced the following error in multiple runs:

[genny::What*] = Resharding critical section timed out.: generic server error

The log messages in the genny output are sparse. The purpose of this ticket is to investigate why the failures occurred, add additional logging if required, and identify appropriate t2 or other metrics to assist in diagnosing future issues.