1. A non-transitory computer-readable medium storing computer-executable instructions that when executed by a computer cause the computer to perform a method, the method comprising: systematically locating inodes in an active file system and placing inbound scanner data associated with a located inode in a metadata update data store, where the active file system stores inodes and file system metadata associated with the active file system in one or more btrees, where the inbound scanner data comprises an inode number and an inode state, where the inode state includes an access time, an owner, and a permission; detecting events that change inodes in the active file system; batching together information concerning at least one thousand events that change inodes in the active file system into an inbound transaction data batch; placing the inbound transaction data batch concerning a changed inode or the event that changed the changed inode in the metadata update data store, where an event includes a file creation event, a file deletion event, a read from a file event, a write to a file event, or a permission changing event; selectively updating a metadata dump data store from the metadata update data store as a function of the inbound scanner data; and selectively updating the metadata dump data store from the metadata update data store as a function of the inbound transaction data, where systematically locating inodes comprises locating inodes in the active file system according to a depth-first tree walk, a breadth-first tree walk, or a combination depth-first breadth-first tree walk, where selectively updating the metadata dump data store includes flattening a data structure within the metadata dump store into a table structure, and where locating inodes, detecting events, and selectively updating the metadata dump data store operate at least partially in parallel to populate the metadata dump data store using a systematic, system-wide, multi-threaded crawler approach with metadata sufficient to restore the metadata of the active file system.