SMR-AWARE APPEND-ONLY FILE SYSTEM

摘要

A shingled magnetic recording (SMR) append-only file system includes a disk comprising a plurality of concentric append-only shingled data bands having partially overlapping data tracks, wherein the data bands are associated with a circular linked list having a head data band and a tail data band, the head data band and the tail data band each comprising a plurality of data blocks. The system also includes a processor configured to write data blocks to the disk, and create a new file wherein an empty data band of the plurality of data bands is removed from the circular linked list and added to a single linked list of the new file.