Linear tape file system unoptimized read detection
AssigneeInternational Business Machines Corporation
InventorsTohru Hasegawa, Hiroshi Itagaki, Tsuyoshi Miyamura, Atsushi Abe, Shinsuke Mitsuma, Noriko Yamamoto
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Abstract
A computer-implemented method for unoptimized tape drive read detection is disclosed. The computer-implemented includes determining whether a read order of a trio of related files is consistent with an order in which the trio of related files are stored on a magnetic tape media. The computer-implemented method further includes generating an unoptimized tape drive read warning in response to determining that the read order of the trio of related files is inconsistent with the order in which the trio of related files are stored on the magnetic tape media.
Claims14
A computer-implemented method for unoptimized tape drive read detection, comprising:
- determining whether a read order of a trio of consecutively read related files is consistent with an order in which the trio of consecutively read related files are stored on a magnetic tape media, wherein the read order of the trio of consecutively read related files is determined to be consistent with the order in which the trio of consecutively read files are stored on the magnetic tape media based on:
- comparing the read order of the trio of consecutively read related files to a starting block number of each file in the trio of consecutively read related files, and
- determining that either the starting block number of each file in the trio of consecutively read related files increases or that the starting block number of each file in the trio of consecutively read files decreases;
- and
- responsive to determining that the read order of the trio of consecutively read related files is inconsistent with the order in which the trio of consecutively read related files are stored on the magnetic tape media:
- generating an unoptimized tape drive read warning.
A computer program product for unoptimized tape drive read detection, the computer program product comprising a computer readable storage medium and program instructions stored on the one or more computer readable storage medium, the program instructions including instructions to:
- determine whether a read order of a trio of consecutively read related files is consistent with an order in which the trio of consecutively read related files are stored on a magnetic tape media, wherein the read order of the trio of consecutively read related files is determined to be consistent with the order in which the trio of consecutively read files are stored on the magnetic tape media based on:
- comparing the read order of the trio of consecutively read related files to a starting block number of each file in the trio of consecutively read related files, and
- determining that either the starting block number of each file in the trio of consecutively read related files increases or that the starting block number of each file in the trio of consecutively read files decreases;
- and
- responsive to determining that the read order of the trio of consecutively read related files is inconsistent with the order in which the trio of consecutively read related files are stored on the magnetic tape media:
- generate an unoptimized tape drive read warning.
A computer system for unoptimized tape drive read detection, the computer system comprising:
- one or more computer processors;
- one or more computer readable storage media;
- and
- computer program instructions, the computer program instructions being stored on the one or more computer readable storage media for execution by the one or more computer processors, and the computer program instructions including instructions to:
- determine whether a read order of a trio of consecutively read related files is consistent with an order in which the trio of consecutively read related files are stored on a magnetic tape media, wherein the read order of the trio of consecutively read related files is determined to be consistent with the order in which the trio of consecutively read files are stored on the magnetic tape media based on:
- comparing the read order of the trio of consecutively read related files to a starting block number of each file in the trio of consecutively read related files, and
- determining that either the starting block number of each file in the trio of consecutively read related files increases or that the starting block number of each file in the trio of consecutively read files decreases;
- and
- responsive to determining that the read order of the trio of consecutively read related files is inconsistent with the order in which the trio of consecutively read related files are stored on the magnetic tape media:
- generate an unoptimized tape drive read warning.
Dependencies are inferred from the claim text.