metadata.mfs - Information about the filesystem objects (files, directories, links, etc.) is kept in a special metadata file, called metadata.mfs. When the master server starts up it first reads this entire file into RAM. When the master server exits cleanly it writes out the entire metadata from the RAM back to this file and renames it to metadata.mfs.
metadata.mfs.back - When master server is started , it will read a file metadata.mfs and initiate metadata.mfs.back file from its last state. During normal operation on a master server, all pending changelogs are written to this file on an hourly basis at the top of the hour. It is highly rec...