Patents by Inventor Geoffrey Wehrman

Geoffrey Wehrman 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).

  • Relocation of metadata server with outstanding DMAPI requests
    Patent number: 9275058
    Abstract: A cluster of computer system nodes share direct read/write access to storage devices via a storage area network using a cluster filesystem and operating system implementing DMAPI. Threads executing on a metadata client know when a DMAPI event is required, and generate the DMAPI event on their own initiative when necessary. A metadata server maintains DMAPI queues. If the metadata server relocates to another host, the DMAPI events in the DMAPI queues are moved transparently to users.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: March 1, 2016
    Assignee: Silicon Graphics International Corp.
    Inventors: Geoffrey Wehrman, Dean Roehrich
  • RELOCATION OF METADATA SERVER WITH OUTSTANDING DMAPI REQUESTS
    Publication number: 20120059854
    Abstract: A cluster of computer system nodes share direct read/write access to storage devices via a storage area network using a cluster filesystem and operating system implementing DMAPI. Threads executing on a metadata client know when a DMAPI event is required, and generate the DMAPI event on their own initiative when necessary. A metadata server maintains DMAPI queues. If the metadata server relocates to another host, the DMAPI events in the DMAPI queues are moved transparently to users.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 8, 2012
    Inventors: Geoffrey Wehrman, Dean Roehrich
  • Relocation of metadata server with outstanding DMAPI requests
    Patent number: 8010558
    Abstract: A cluster of computer system nodes share direct read/write access to storage devices via a storage area network using a cluster filesystem and operating system implementing DMAPI. Threads executing on a metadata client know when a DMAPI event is required, and generate the DMAPI event on their own initiative when necessary. A metadata server maintains DMAPI queues. If the metadata server relocates to another host, the DMAPI events in the DMAPI queues are moved transparently to users.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: August 30, 2011
    Assignee: Silicon Graphics International
    Inventors: Geoffrey Wehrman, Dean Roehrich
  • Relocation of metadata server with outstanding DMAPI requests
    Publication number: 20050015384
    Abstract: A cluster of computer system nodes share direct read/write access to storage devices via a storage area network using a cluster filesystem and operating system implementing DMAPI. Threads executing on a metadata client know when a DMAPI event is required, and generate the DMAPI event on their own initiative when necessary. A metadata server maintains DMAPI queues. If the metadata server relocates to another host, the DMAPI events in the DMAPI queues are moved transparently to users.
    Type: Application
    Filed: July 17, 2003
    Publication date: January 20, 2005
    Applicant: SILICON GRAPHICS, INC.
    Inventors: Geoffrey Wehrman, Dean Roehrich