Global tracking of virtual inode numbers in snap-based filesystems

Technology described herein can globally perform management of virtual inode numbers (VINs) of all snapshots of a real filesystem. In an embodiment, a system can comprise a processor and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations. The operations can comprise, in response to a request to generate a primary snapshot of a real filesystem, allocating a primary instance of an individual VIN for a virtual inode corresponding to the primary snapshot, resulting in an allocated VIN having associated therewith a weight expressed as a value. The operations further can comprise storing the weight for the allocated VIN at a corresponding VIN metadata object exclusive to the VIN.