Patents by Inventor Leonor Maria Quintais

Leonor Maria Quintais 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).

  • Data validation during data recovery in a log-structured array storage system
    Patent number: 11030060
    Abstract: Method and system are provided for data validation during data recovery in a log-structure array (LSA) storage system. The method includes reading a log record of a recovery log for a logical address to obtain a physical address at a storage backend for the data at the time of the log record; reading reference metadata at the obtained physical address, wherein the reference metadata indicates the logical address that last wrote data to the physical address; validating that the physical address for the log record contains valid data for the logical address of the log record by comparing the logical address of the reference metadata to the logical address of the log record; and replaying the log record if the physical address is validated for recovery of virtual domain logical metadata mapping the logical address to the physical addresses of the log record.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: June 8, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Florent Rostagni, Leonor Maria Quintais, Ben Sasson, Carlos F. Fuente
  • DATA VALIDATION DURING DATA RECOVERY IN A LOG-STRUCTURED ARRAY STORAGE SYSTEM
    Publication number: 20210056000
    Abstract: Method and system are provided for data validation during data recovery in a log-structure array (LSA) storage system. The method includes reading a log record of a recovery log for a logical address to obtain a physical address at a storage backend for the data at the time of the log record; reading reference metadata at the obtained physical address, wherein the reference metadata indicates the logical address that last wrote data to the physical address; validating that the physical address for the log record contains valid data for the logical address of the log record by comparing the logical address of the reference metadata to the logical address of the log record; and replaying the log record if the physical address is validated for recovery of virtual domain logical metadata mapping the logical address to the physical addresses of the log record.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 25, 2021
    Inventors: Florent Rostagni, Leonor Maria Quintais, Ben Sasson, Carlos F. Fuente