An Adaptive Version-Controlled File System

There are many version management systems to identify, record, and track the changes of software products. However, most of these systems require engineers to learn how to use these tools; if there are some missoperation, version management could be not established. Some systems employ their proprietary versioning le systems, and engineers do not need to consider how to record the changes. However, these changes are stored in special formats, so portability of the systems cannot be accomplished. In this paper, we propose VCFS, a novel version management le system, which automatically record changes of les. We have implemented VCFS as a stackable le system, which is easily ported to other systems. We have also evaluated VCFS with le reading, le writing, compile operations, and le size of repository. As a result, VCFS provides almost the same performance as usual le systems, and also it provides the version control facility.