[RndTbl] Advanced file systems

Hello List. Does anyone know of a file system that supports dynamic meta-data and file versioning? By meta-data, I mean information about the file. Typically this would be things like created/modified date, etc. but I would like to be able to store other meta-data, perhaps things like "customer id" etc. By versioning, I mean, when a file is modified or deleted the previous version is automatically saved. I would like this to be a file system available under Linux but I am curious to hear of any file systems that are like this. Regards, -- John Lange