Patents by Inventor Xioa-Yu Hu

Xioa-Yu Hu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • MANAGING METADATA FOR CACHING DEVICES DURING SHUTDOWN AND RESTART PROCEDURES
    Publication number: 20160188478
    Abstract: A computer program product, system, and method for managing metadata for caching devices during shutdown and restart procedures. Fragment metadata for each fragment of data from the storage server stored in the cache device is generated. The fragment metadata is written to at least one chunk of storage in the cache device in a metadata directory in the cache device. For each of the at least one chunk in the cache device to which the fragment metadata is written, chunk metadata is generated for the chunk and writing the generated chunk metadata to the metadata directory in the cache device. Header metadata having information on access of the storage server is written to the metadata directory in the cache device. The written header metadata, chunk metadata, and fragment metadata are used to validate the metadata directory and the fragment data in the cache device during a restart operation.
    Type: Application
    Filed: June 25, 2015
    Publication date: June 30, 2016
    Inventors: Stephen L. Blinick, Clement L. Dickey, Xioa-Yu Hu, Nikolas Ioannou, Ioannis Koltsidas, Paul H. Muench, Roman Pletka, Sangeetha Seshadri
  • Managing metadata for caching devices during shutdown and restart procedures
    Patent number: 9086972
    Abstract: A computer program product, system, and method for managing metadata for caching devices during shutdown and restart procedures. Fragment metadata for each fragment of data from the storage server stored in the cache device is generated. The fragment metadata is written to at least one chunk of storage in the cache device in a metadata directory in the cache device. For each of the at least one chunk in the cache device to which the fragment metadata is written, chunk metadata is generated for the chunk and writing the generated chunk metadata to the metadata directory in the cache device. Header metadata having information on access of the storage server is written to the metadata directory in the cache device. The written header metadata, chunk metadata, and fragment metadata are used to validate the metadata directory and the fragment data in the cache device during a restart operation.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: July 21, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Stephen L. Blinick, Clement L. Dickey, Xioa-Yu Hu, Nikolas Ioannou, Ioannis Koltsidas, Paul H. Muench, Roman Pletka, Sangeetha Seshadri
  • MANAGING METADATA FOR CACHING DEVICES DURING SHUTDOWN AND RESTART PROCEDURES
    Publication number: 20150012706
    Abstract: A computer program product, system, and method for managing metadata for caching devices during shutdown and restart procedures. Fragment metadata for each fragment of data from the storage server stored in the cache device is generated. The fragment metadata is written to at least one chunk of storage in the cache device in a metadata directory in the cache device. For each of the at least one chunk in the cache device to which the fragment metadata is written, chunk metadata is generated for the chunk and writing the generated chunk metadata to the metadata directory in the cache device. Header metadata having information on access of the storage server is written to the metadata directory in the cache device. The written header metadata, chunk metadata, and fragment metadata are used to validate the metadata directory and the fragment data in the cache device during a restart operation.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 8, 2015
    Inventors: Stephen L. Blinick, Clement L. Dickey, Xioa-Yu Hu, Nikolas Ioannou, Ioannis Koltsidas, Paul H. Muench, Roman Pletka, Sangeetha Seshadri