Patents by Inventor Owen Strain

Owen Strain 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).

  • Methods and apparatuses to optimize updates in a file system based on birth time
    Patent number: 9575976
    Abstract: Methods and apparatuses that maintain birth time for a file system to optimize file update operations are described. The file system can include a plurality of snapshots or clones of data stored in one or more extents of blocks allocated in a storage device. Each extent may be associated with a time stamp according to the birth time. A request may be received from an executable using the file system to update data in a particular extent associated with a particular time stamp. In response, the current birth time in the file system and the particular time stamp may be compared to determine if the particular extent is not shared by more than one of the snapshots. If the particular time stamp is equal to the current birth time, the particular extent may be updated directly without performing an expensive operation to check whether a reference count of the particular extent is equal to one.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: February 21, 2017
    Assignee: Apple Inc.
    Inventors: Wenguang Wang, Deric Horn, David Alexander Majnemer, Owen Strain
  • METHODS AND APPARATUSES TO OPTIMIZE UPDATES IN A FILE SYSTEM BASED ON BIRTH TIME
    Publication number: 20150006495
    Abstract: Methods and apparatuses that maintain birth time for a file system to optimize file update operations are described. The file system can include a plurality of snapshots or clones of data stored in one or more extents of blocks allocated in a storage device. Each extent may be associated with a time stamp according to the birth time. A request may be received from an executable using the file system to update data in a particular extent associated with a particular time stamp. In response, the current birth time in the file system and the particular time stamp may be compared to determine if the particular extent is not shared by more than one of the snapshots. If the particular time stamp is equal to the current birth time, the particular extent may be updated directly without performing an expensive operation to check whether a reference count of the particular extent is equal to one.
    Type: Application
    Filed: September 17, 2014
    Publication date: January 1, 2015
    Inventors: Wenguang WANG, Deric HORN, David Alexander MAJNEMER, Owen STRAIN
  • Methods and apparatuses to optimize updates in a file system based on birth time
    Patent number: 8849876
    Abstract: Methods and apparatuses that maintain birth time for a file system to optimize file update operations are described. The file system can include a plurality of snapshots or clones of data stored in one or more extents of blocks allocated in a storage device. Each extent may be associated with a time stamp according to the birth time. A request may be received from an executable using the file system to update data in a particular extent associated with a particular time stamp. In response, the current birth time in the file system and the particular time stamp may be compared to determine if the particular extent is not shared by more than one of the snapshots. If the particular time stamp is equal to the current birth time, the particular extent may be updated directly without performing an expensive operation to check whether a reference count of the particular extent is equal to one.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: September 30, 2014
    Inventors: Wenguang Wang, Deric Horn, David Alexander Majnemer, Owen Strain
  • METHODS AND APPARATUSES TO OPTIMIZE UPDATES IN A FILE SYSTEM BASED ON BIRTH TIME
    Publication number: 20110161381
    Abstract: Methods and apparatuses that maintain birth time for a file system to optimize file update operations are described. The file system can include a plurality of snapshots or clones of data stored in one or more extents of blocks allocated in a storage device. Each extent may be associated with a time stamp according to the birth time. A request may be received from an executable using the file system to update data in a particular extent associated with a particular time stamp. In response, the current birth time in the file system and the particular time stamp may be compared to determine if the particular extent is not shared by more than one of the snapshots. If the particular time stamp is equal to the current birth time, the particular extent may be updated directly without performing an expensive operation to check whether a reference count of the particular extent is equal to one.
    Type: Application
    Filed: December 28, 2009
    Publication date: June 30, 2011
    Inventors: Wenguang Wang, Deric Horn, David Alexander Majnemer, Owen Strain