Patents by Inventor Warren Dukes, JR.

Warren Dukes, JR. 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).

  • Method and system for handling lock state information at storage system nodes
    Patent number: 9984095
    Abstract: Methods and systems for handling lock state information between a first storage system node and a second storage system node coupled via a network link are provided. The second storage system node stores lock state information at a storage device previously managed by the first storage system node and notifies the first storage system node of a storage device location where the lock state information is stored. The second storage system node then transfers ownership of the storage device to the first storage system node that copies the lock state information from the storage device location to a memory location managed by the first storage system node. The first storage system node uses the lock state information to reconstruct any locks for storage space presented to a client and then processes client requests for reading and writing information at the storage device.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: May 29, 2018
    Assignee: NetApp Inc.
    Inventors: Ben George, Warren Dukes, Jr.
  • Method and system for handling lock state information at storage system nodes
    Patent number: 9514165
    Abstract: Methods and systems for handling lock state information between a first storage system node and a second storage system node coupled via a network link are provided. The second storage system node stores lock state information at a storage device previously managed by the first storage system node and notifies the first storage system node of a storage device location where the lock state information is stored. The second storage system node then transfers ownership of the storage device to the first storage system node that copies the lock state information from the storage device location to a memory location managed by the first storage system node. The first storage system node uses the lock state information to reconstruct any locks for storage space presented to a client and then processes client requests for reading and writing information at the storage device.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: December 6, 2016
    Assignee: NETAPP, INC.
    Inventors: Ben George, Warren Dukes, Jr.
  • METHOD AND SYSTEM FOR HANDLING LOCK STATE INFORMATION AT STORAGE SYSTEM NODES
    Publication number: 20150213011
    Abstract: Methods and systems for handling lock state information between a first storage system node and a second storage system node coupled via a network link are provided. The second storage system node stores lock state information at a storage device previously managed by the first storage system node and notifies the first storage system node of a storage device location where the lock state information is stored. The second storage system node then transfers ownership of the storage device to the first storage system node that copies the lock state information from the storage device location to a memory location managed by the first storage system node. The first storage system node uses the lock state information to reconstruct any locks for storage space presented to a client and then processes client requests for reading and writing information at the storage device.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 30, 2015
    Applicant: NETAPP, INC.
    Inventors: Ben George, Warren Dukes, JR.
  • File system agnostic replication
    Patent number: 8326798
    Abstract: A replication operation service migrates data from a source volume having a source file system type to a destination volume having a destination file system type, where the source file system type may be different from the destination file system type. The replication operation is completed without interrupting the operations of a client device in the system. A stable copy of the source file system is generated on the source volume. A file system agnostic representation of a portion of the data in the source volume is generated from the stable copy. The representation is transmitted to the destination volume where it is converted to conform to the destination file system type.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: December 4, 2012
    Assignee: Network Appliance, Inc.
    Inventors: Alan Stuart Driscoll, Peter Frank Corbett, Toby Smith, Devang K. Shah, Srishylam Simharajan, Keith Allen Arner, Joe Warren Dukes, Jr.