Patents by Inventor Qing Hua Ling

Qing Hua Ling 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).

  • Patent number: 10853209
    Abstract: Techniques for data synchronization involve obtaining a first bitmap about a first storage device, the first storage device including a group of storage areas, a bit in the first bitmap indicating whether data in a corresponding storage area of a first size in the group of storage areas is to be synchronized to a second storage device. The technique further involves, in response to a configuration of the first storage device being changed, determining a second size of a storage area in the group of storage areas. The technique further involves converting the first bitmap into a second bitmap based on the first size and the second size. In addition, the technique further involves synchronizing data from the first storage device to the second storage device based on the second size and the second bitmap.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: December 1, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Yue Yang, Xin Zhong, Yangfeng Chen, Qing Hua Ling, Yan Shao, Yuan Gu, Jianbao Li, Lei Han, Wei Feng
  • Publication number: 20190332580
    Abstract: Techniques for data replication involve: in response to a first source state machine associated with a source file system being booted up, booting up a second source state machine associated with the source file system, the first source state machine performing a first operation for resizing a first storage area of data for replication from the source file system; transmitting a resizing message from the second source state machine to a destination file system, to enable the destination file system to perform a second operation for resizing a second storage area for storing the data to be replicated into the destination file system; and in response to the first operation and the second operation being successfully performed, enabling the data for replication from the source file system to be replicated into the destination file system.
    Type: Application
    Filed: December 20, 2018
    Publication date: October 31, 2019
    Inventors: Qing Hua Ling, Xin Zhong, Yangfeng Chen, Yue Yang, Jianbao Li, Lei Han, Yuan Gu, Yan Shao
  • Publication number: 20190332503
    Abstract: Techniques for data synchronization involve obtaining a first bitmap about a first storage device, the first storage device including a group of storage areas, a bit in the first bitmap indicating whether data in a corresponding storage area of a first size in the group of storage areas is to be synchronized to a second storage device. The technique further involves, in response to a configuration of the first storage device being changed, determining a second size of a storage area in the group of storage areas. The technique further involves converting the first bitmap into a second bitmap based on the first size and the second size. In addition, the technique further involves synchronizing data from the first storage device to the second storage device based on the second size and the second bitmap.
    Type: Application
    Filed: December 20, 2018
    Publication date: October 31, 2019
    Inventors: Yue Yang, Xin Zhong, Yangfeng Chen, Qing Hua Ling, Yan Shao, Yuan Gu, Jianbao Li, Lei Han, Wei Feng