HIGH RESOLUTION TAPE DIRECTORY (HRTD) STORED AT END OF DATA IN AN INDEX PARTITION

摘要

In one embodiment, a method includes writing a file into a data partition of a tape medium, writing a pointer of the written file in an index partition and creating a high resolution tape directory (HRTD) including detailed location information of data in a data partition. The method also includes storing the HRTD as part of end of data (EOD) of the index partition in response to a tape cartridge housing the tape medium being unloaded. The storing the HRTD as part of the EOD of the index partition includes requesting movement of the tape medium to the index partition in order to update an index file after changes have occurred to data in the data partition, writing an updated index file into the index partition concurrent to writing an updated HRTD into the EOD of the index partition, and requesting for the tape cartridge to be unloaded.

主权项

1. A tape drive system, comprising:
a file system configured to enable sequential access to data on a tape medium, the file system being enabled in at least one hardware processor; a file access controller configured to manage the data, the file access controller comprising the at least one hardware processor and logic integrated with and/or executable by the at least one hardware processor, the logic being configured to cause the at least one hardware processor to:
write a file into a data partition of a tape medium, wherein the tape medium comprises two or more partitions including the data partition and an index partition;write a pointer of the written file in the index partition of the tape medium, wherein the pointer is managed by the file access controller;create a high resolution tape directory (HRTD), the HRTD including detailed location information of data in the data partition of the tape medium; andstore the HRTD as part of end of data (EOD) of the index partition in response to a tape cartridge housing the tape medium being unloaded, the logic configured to cause the at least one hardware processor to store the HRTD as part of EOD further causing the at least one hardware processor to:
request movement of the tape medium to the index partition in order to update an index file after changes have occurred to data in the data partition;write an updated index file into the index partition;write an updated HRTD into the EOD of the index partition concurrent to writing the updated index file; andrequest for the tape cartridge to be unloaded.