READING AND WRITING VIA FILE SYSTEM FOR TAPE RECORDING SYSTEM

摘要

Communicating data with a medium is provided. A cache is provided for storing target data of a file identified by an access request from an application of a host. The cache is divided into a read cache, a write cache, and an index cache. Responsive to receiving the access request: the medium is loaded onto a drive using a file system; target data is stored to the write cache and to the read cache; and the index file stored in the index cache is updated to reflect position metadata about the target data stored in the write cache. Responsive to initiating unloading of the medium from the drive: the updated index file stored in the index cache is written to the index partition of the medium; and the target data stored in the write cache is written onto a data partition of the medium without using the file system.

主权项

1. A method for communicating data with a medium loaded on a tape apparatus via a file system in a tape recording system connected to a host, the tape recording system including the tape apparatus, the method comprising:
providing a cache for storing target data of a file, the file being identified by an access request received from an application of the host, the cache being divided into: a read cache for storing target data from the medium in response to a read access; a write cache for storing target data from the application in response to a write access; and an index cache for storing an index file acquired from an index partition of the medium, the index file including metadata about a plurality of files; in response to receiving the access request:
loading the medium onto a drive using a file system;storing target data to the write cache and to the read cache; andupdating the index file stored in the index cache to reflect position metadata about the target data stored in the write cache; in response to initiating unloading of the medium from the drive:
writing the updated index file stored in the index cache to the index partition of the medium; andwriting the target data stored in the write cache onto a data partition of the medium without using the file system.