METHOD AND SYSTEM FOR VERSIONED FILE SYSTEM USING STRUCTURED DATA REPRESENTATIONS

摘要

A versioned file system comprises a set of structured data representations. At a first time, an interface exports to the data store a first structured data representation corresponding to a first version of the local file system. The first structured data representation is an XML tree having a root element, one or more directory elements associated with the root element, and one or more file elements associated with a given directory element. Upon a change within the file system, the interface exports a second structured data representation corresponding to a second version of the file system. The interface exports the structured data representation to the data store whenever changes within the file system have occurred. A given structured data representation is used to retrieve an associated version of file system. The versioned file system only requires write-once behavior from the data store to preserve its complete state at any point-in-time.