System, method and computer program product for recovering stub files

摘要

A read cache may include portions of files stored on media of a media library. Embodiments described herein may include systems and methods for restoring a read cache, including restoring stub files to a read cache on an ad hoc basis.

主权项

1. A system for recovering a read cache comprising:
a media library, comprising:
a set of drives, anda set of media; and an archive node appliance coupled to the media library and a set of hosts, the archive node appliance comprising a processor, a data store and a computer readable medium storing a set of computer executable instructions executable on the processor to:
maintain a read cache comprising portions of files stored on the set of media;present a first file as being at a first location in a network based file system, the first location comprising a first path;receive a request from a network file system interface client for the first file at the first location;locate the first file at a second location on a media of the media library, the second location comprising a second path, wherein the second path is a path in a second file system and includes at least a portion of the first path;read the first file from the media of the media library; andpopulate the read cache with a stub file for the first file using file data read from the second location on the media.