1. A method for maintaining a data structure corresponding to an object having a first link from a first directory and a second link from a second directory in a filesystem, the object to which the data structure corresponds being selected from the group consisting of a file and a directory in the filesystem, the first and second directories being parent directories to the object to which the data structure corresponds, the method comprising the steps of: storing in the data structure a first anchor point for the object that references the first directory, said first directory implemented on a first filesystem type; storing in the data structure a second anchor point for the object that references the second directory, said second directory implemented on a second filesystem type different than the first; and concurrently with storing the first and second anchor points, converting the first filesystem type to the second filesystem type including activating the second directory and deleting the first directory while maintaining the filesystem in a full operational capacity.