US Patent 10216757 Managing deletion of replicas of files

A method is used in managing deletion of replicas of files. A request to delete a set of replicas of a file of a file system is received. A replica of the file represents a state of the file at a particular prior point in time. A destination replica is identified. A set of file system blocks shared between a replica of the set of replicas and the destination replica is de-allocated by updating metadata of the destination replica. File system blocks associated with the set of replicas are de-allocated. A subset of the file system blocks are de-allocated concurrently.