In a system and method for updating a remote replicated destination file system
snapshot with changes in a source file system snapshot, the snapshot being associated
with a qtree (or other sub-organization of the file system volume), a qtree metadata
file on the destination in provided. The qtree metadata file resides, in the destination
volume, and outside the qtree structure. The metadata file stores state information
with respect to each qtree. This metadata file resides at a known location in the
destination volume. The metadata file can include a plurality of fixed length records
having respective fields for storing various information including qtree-specific
information, and can be part of a hidden metadata directory.