Patents by Inventor Christopher Diebold O'Toole

Christopher Diebold O'Toole 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).

  • Accessing snapshots of a time based file system
    Patent number: 8768988
    Abstract: A file system driver stored in a computational device receives a request to provide access to a snapshot of a rewritable file system at a selected point in time, wherein a plurality of tokens corresponding to a plurality of data units are stored in the rewritable file system, and wherein an ordering relationship is maintained among the plurality of tokens. The file system driver determines a token corresponding to the selected point in time based on the ordering relationship. A virtual subdirectory name is generated corresponding to the determined token. A virtual subdirectory is created with the generated virtual subdirectory name, wherein the virtual subdirectory is a subdirectory of a root directory. The snapshot is accessed via the subdirectory.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 1, 2014
    Assignee: International Business Machines Corporation
    Inventors: Kenneth Wayne Boyd, Kennth Fairclough Day, III, Douglas William Dewey, Christopher Diebold O'Toole
  • Accessing snapshots of a time based file system
    Patent number: 8392481
    Abstract: A file system driver stored in a computational device receives a request to provide access to a snapshot of a rewritable file system at a selected point in time, wherein a plurality of tokens corresponding to a plurality of data units are stored in the rewritable file system, and wherein an ordering relationship is maintained among the plurality of tokens. The file system driver determines a token corresponding to the selected point in time based on the ordering relationship. A virtual subdirectory name is generated corresponding to the determined token. A virtual subdirectory is created with the generated virtual subdirectory name, wherein the virtual subdirectory is a subdirectory of a root directory. The snapshot is accessed via the subdirectory.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: March 5, 2013
    Assignee: International Business Machines Corporation
    Inventors: Kenneth Wayne Boyd, Kenneth Fairclough Day, III, Douglas William Dewey, Christopher Diebold O'Toole
  • ACCESSING SNAPSHOTS OF A TIME BASED FILE SYSTEM
    Publication number: 20130018931
    Abstract: A file system driver stored in a computational device receives a request to provide access to a snapshot of a rewritable file system at a selected point in time, wherein a plurality of tokens corresponding to a plurality of data units are stored in the rewritable file system, and wherein an ordering relationship is maintained among the plurality of tokens. The file system driver determines a token corresponding to the selected point in time based on the ordering relationship. A virtual subdirectory name is generated corresponding to the determined token. A virtual subdirectory is created with the generated virtual subdirectory name, wherein the virtual subdirectory is a subdirectory of a root directory. The snapshot is accessed via the subdirectory.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 17, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kenneth Wayne Boyd, Kennth Fairclough Day, III, Douglas William Dewey, Christopher Diebold O'Toole
  • Representation of system clock changes in time based file systems
    Patent number: 8108364
    Abstract: A plurality of data units with associated timestamps is stored in a time based file system, wherein a timestamp corresponds to a time indicated by a system clock. A time indicated by the system clock is changed while the plurality of data units is being stored. A plurality of epochs is stored in a data structure, wherein an epoch is a period of time between a starting and an ending timestamp selected from the timestamps, and wherein successive epochs have overlapping time periods. The time based file system is reverted to an earlier point in time based on the plurality of epochs stored in the data structure.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: January 31, 2012
    Assignee: International Business Machines Corporation
    Inventors: Kenneth Wayne Boyd, Kenneth Fairclough Day, III, Douglas William Dewey, Christopher Diebold O'Toole
  • ACCESSING SNAPSHOTS OF A TIME BASED FILE SYSTEM
    Publication number: 20100274764
    Abstract: A file system driver stored in a computational device receives a request to provide access to a snapshot of a rewritable file system at a selected point in time, wherein a plurality of tokens corresponding to a plurality of data units are stored in the rewritable file system, and wherein an ordering relationship is maintained among the plurality of tokens. The file system driver determines a token corresponding to the selected point in time based on the ordering relationship. A virtual subdirectory name is generated corresponding to the determined token. A virtual subdirectory is created with the generated virtual subdirectory name, wherein the virtual subdirectory is a subdirectory of a root directory. The snapshot is accessed via the subdirectory.
    Type: Application
    Filed: April 22, 2009
    Publication date: October 28, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kenneth Wayne Boyd, Kenneth Fairclough Day, III, Douglas William Dewey, Christopher Diebold O'Toole
  • REPRESENTATION OF SYSTEM CLOCK CHANGES IN TIME BASED FILE SYSTEMS
    Publication number: 20100036895
    Abstract: A plurality of data units with associated timestamps is stored in a time based file system, wherein a timestamp corresponds to a time indicated by a system clock. A time indicated by the system clock is changed while the plurality of data units is being stored. A plurality of epochs is stored in a data structure, wherein an epoch is a period of time between a starting and an ending timestamp selected from the timestamps, and wherein successive epochs have overlapping time periods. The time based file system is reverted to an earlier point in time based on the plurality of epochs stored in the data structure.
    Type: Application
    Filed: August 6, 2008
    Publication date: February 11, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kenneth Wayne Boyd, Kenneth Fairclough Day, III, Douglas William Dewey, Christopher Diebold O'Toole