Patents by Inventor Dinh H. Le

Dinh H. Le 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).

  • Verification of hardware configuration
    Patent number: 8930904
    Abstract: A method for verifying an input/output (I/O) hardware configuration is provided. Data from an input/output data set (IOCDS) is extracted for building a verification command. The IOCDS contains hardware requirements that define at least software devices associated with a logical control unit (LCU). The verification command is processed. The verification command includes a software device address range associated with a logical control unit (LCU) of the I/O hardware. The LCU utilizes a first logical path. The software device address range utilizing the first logical path is compared with an existing software device address range utilizing at least one additional logical path. The verification command is accepted if the software device address range and the existing software device address range match.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: January 6, 2015
    Assignee: International Business Machines Corporation
    Inventors: Juan A. Coronado, Roger G. Hathorn, Dinh H. Le, Daniel J. Perkin, Adelaide M. Richards, Aaron E. Taylor
  • Method to allow a host to replace logical path resources it owns
    Patent number: 8909827
    Abstract: A method for replacing logical path resources, a host is able to replace a logical path it owns with a new logical path. Such a system is especially applicable when the condition of “out of resources” has been reached for a port. With this system, a host is guaranteed that it can replace a logical path it owns with a new logical path. It is not necessary for a control unit to have reached its maximum number of logical paths per port. A host is able to replace one logical path with a new logical path any time.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: December 9, 2014
    Assignee: International Business Machines Corporation
    Inventors: Juan A. Coronado, Roger G. Hathorn, Bret W. Holley, Dinh H. Le
  • Method to recover from ungrouped logical path failures
    Patent number: 7996707
    Abstract: A system and method for recovering from a single logical path failure. More specifically, although a host has not grouped its logical paths, the host knows which logical paths it has available. When a host detects a logical path failure, the host enters a path discovery mode of operation. If the host continues to detect a logical path failure while operating in the logical path discovery mode of operation, the host removes the logical path from a logical path mask, and the host does not use the removed logical path again. In the case of ungrouped logical paths, the host aborts its process because it does not have more paths available to continue its process. Additionally, in certain embodiments, a pseudo path group for ungrouped logical paths is created.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: August 9, 2011
    Assignee: International Business Machines Corporation
    Inventors: Juan A. Coronado, Roger G. Hathorn, Bret W. Holley, Daniel J. Perkin, Dinh H. Le
  • Method to recover from ungrouped logical path failures
    Publication number: 20100023801
    Abstract: A system and method for recovering from a single logical path failure. More specifically, although a host has not grouped its logical paths, the host knows which logical paths it has available. When a host detects a logical path failure, the host enters a path discovery mode of operation. If the host continues to detect a logical path failure while operating in the logical path discovery mode of operation, the host removes the logical path from a logical path mask, and the host does not use the removed logical path again. In the case of ungrouped logical paths, the host aborts its process because it does not have more paths available to continue its process. Additionally, in certain embodiments, a pseudo path group for ungrouped logical paths is created.
    Type: Application
    Filed: July 25, 2008
    Publication date: January 28, 2010
    Inventors: Juan A. Coronado, Roger G. Hathorn, Bret W. Holley, Daniel J. Perkin, Dinh H. Le
  • Method to Allow a Host to Replace Logical Path Resources it Owns
    Publication number: 20090193142
    Abstract: A method for replacing logical path resources, a host is able to replace a logical path it owns with a new logical path. Such a system is especially applicable when the condition of “out of resources” has been reached for a port. With this system, a host is guaranteed that it can replace a logical path it owns with a new logical path. It is not necessary for a control unit to have reached its maximum number of logical paths per port. A host is able to replace one logical path with a new logical path any time.
    Type: Application
    Filed: January 30, 2008
    Publication date: July 30, 2009
    Inventors: Juan A. Coronado, Roger G. Hathorn, Bret W. Holley, Dinh H. Le