Currently we are lacking in a comprehensive explanation of the issues that can arise with WT when running on EXT4.

Specifically, details on what the issue is, under what conditions it can manifest, and what the symptoms are. We have similar pages explaining how NUMA or low ulimits can negatively impact a cluster, and therefore it makes sense to have a page covering EXT4's issue in a bit more detail.

Particularly since it is a widely accepted filesystem and the issues will only manifest themselves under certain conditions.