Low-overhead enhancement of reliability of journaled file system using solid state storage and de-duplication

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United States of America Patent

PATENT NO 9454538
APP PUB NO 20150039568A1
SERIAL NO

14521582

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Abstract

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A mechanism is provided in a data processing system for reliable asynchronous solid-state device based de-duplication. Responsive to receiving a write request to write data to the file system, the mechanism sends the write request to the file system, and in parallel, computes a hash key for the write data. The mechanism looks up the hash key in a de-duplication table. The de-duplication table is stored in a memory or a solid-state storage device. Responsive to the hash key not existing in the de-duplication table, the mechanism writes the write data to a storage device, writes a journal transaction comprising the hash key, and updates the de-duplication table to reference the write data in the storage device.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Noronha, Ranjit M Mumbai, IN 6 67
Singh, Ajay K Wakad, IN 9 101

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