The Loss of ZFS
Sun calls ZFS “The Last Word in Filesystems,” but that is a lie. ZFS is on of the first widely deployed copy on write FSes. That certainly makes it a tremendous improvement over existing FSes, but pioneers are the ones with arrows in their back. By looking at ZFS’s development it is certainly possible to identify mistakes that they made, and ways to do things better if one were to start from scratch.
Update (2016-06-20): The original link no longer works; here’s an archived copy.
