Patents by Inventor Geng Han

Geng Han 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: 10802755
    Abstract: A method and a manager for managing a storage system including a manager and a storage device. The storage device includes a data region and a metadata region. The data region is divided into data blocks. The metadata region stores metadata describing zeroing states of the data blocks. The method comprises allocating a metadata cache in a memory of the manager. The metadata cache includes respective zeroing indication bits indicative of the zeroing states of the corresponding data blocks. The allocating procedure comprises allocating a user data cache for reading or writing user data and allocating a background zeroing cache for a background zeroing operation of the storage device. The method further comprises, in response to receiving an I/O request for the storage system, processing the I/O request with the metadata cache.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: October 13, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Geng Han, Jian Gao, Jibing Dong, Xinlei Xu, Changyu Feng
  • Patent number: 10788986
    Abstract: A method and device for selecting a Redundant Array of Independent Disks (RAID) level for mapped RAID. The method comprises determining, for a given RAID level, a desired ratio of rebuilding speed between the mapped RAID and non-mapped RAID based on the first number of disks in the non-mapped RAID and the second number of disks in the mapped RAID. The method also comprises determining an actual ratio of rebuilding speed between the mapped RAID and the non-mapped RAID based on the second number of disks in the mapped RAID. In addition, the method comprises selecting the given RAID level for the mapped RAID in response to the actual ratio being above the desired ratio.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: September 29, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Geng Han, Hongpo Gao, Jibing Dong, Jian Gao, Xinlei Xu
  • Patent number: 10789004
    Abstract: Implementations of the present disclosure relate to a method, system and computer program product for managing a storage system. Specifically, in one implementation of the present disclosure there is provided a method for managing a storage system. The method comprises: determining an access level of a target extent comprised in a stripe of a storage system, the access level indicating the possibility that the target extent will be accessed; obtaining a usage state of a target storage device where the target extent resides, the target storage device residing in a storage device pool associated with the storage system; and processing a mapping relationship between the target extent and the target storage device on the basis of the access level and the usage state. In other implementations of the present disclosure, there is provided a corresponding system and computer program product.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: September 29, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Jian Gao, Wayne Weihua Li, Geng Han, Jamin Kang, Jibing Dong
  • Patent number: 10782894
    Abstract: A method, computer program product, and computer system for reducing, by a computing device, overlap in a RAID extent group by moving a first disk extent in an extent pool from a source disk to a target disk in a Mapped RAID group. A neighborhood matrix for the Mapped RAID group may be balanced by moving a second disk extent in the extent pool from the source disk to the target disk in the Mapped RAID group.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: September 22, 2020
    Assignee: EMC IP Holding Company, LLC
    Inventors: Geng Han, Ilya Usvyatsky, Jian Gao, Jibing Dong, Jamin Kang, Hongpo Gao
  • Patent number: 10761761
    Abstract: The present disclosure relates to a method and device for managing a storage system. Specifically, in one implementation of the present disclosure, there is proposed a method for managing a storage system. The method comprises: obtaining a state record on utilization of a resource pool for creating the storage system, the resource pool comprising a first number of storage devices, the state record comprising a time sequence in which extents in the first number of storage devices are selected to create the storage system; selecting extents from the first number of storage devices to create the storage system according to the state record; and updating the state record on the basis of the selected extents. In one implementation of the present disclosure, there is proposed a device for managing a storage system.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: September 1, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Baote Zhuo, Geng Han, Jian Gao, Jamin Jianbin Kang, Lifeng Yang
  • Patent number: 10754097
    Abstract: Disclosed are an adapter (6) and an adapter assembly using the adapter (6). The adapter (6) comprises an adapter shell (13, 12, 11), wherein an adapter socket contact part (18), an adapter socket locking structure, an adapter plug contact part (14), an adapter plug locking structure, and a seal fit portion for being inserted into a corresponding connecting sleeve (4) in a sealing manner are arranged on the adapter shell (13, 12, 11), and the seal fit portion is located between the adapter socket locking structure and the adapter plug locking structure. The adapter and the adapter assembly using same have a waterproof function.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: August 25, 2020
    Assignee: AVIC JONHON OPTRONIC TECHNOLOGY CO., LTD.
    Inventors: Yunzhao Han, Weike Li, Wenhao Yao, Xutao Wang, Kai Hu, Tao Liu, Geng Xu
  • Publication number: 20200264785
    Abstract: Embodiments of the present invention provide a method and system for managing a storage area. In one embodiment of the present invention, there is provided a method for managing a storage areas, comprising: obtaining a storage area in a storage system according to a predefined dividing rule; determining status regarding whether the storage area has been used; setting a status identifier for the storage area based on the use status; and managing the storage area based on the status identifier. In another embodiment, there is proposed a system for managing a storage area, comprising: one or more processors; a memory coupled to at least one processor of the one or more processors; computer program instructions stored in the memory which, when executed by the at least one processor, cause the system to execute a method for managing a storage area.
    Type: Application
    Filed: February 21, 2020
    Publication date: August 20, 2020
    Inventors: Yousheng Liu, Geng Han, Jibing Dong, Ruiyong Jia, Jian Gao, Xinlei Xu
  • Patent number: 10747675
    Abstract: Embodiments of the present disclosure generally relate to a method and device for managing caches. In particular, the method may include in response to receiving a request to write data to the cache, determining the amount of data to be written. The method may further include in response to the amount of the data exceeding a threshold amount, skipping writing data to the cache and writing the data to a lower level storage of the cache. Corresponding systems, apparatus and computer program products are also provided.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: August 18, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Lester Zhang, Denny Dengyu Wang, Chen Gong, Geng Han, Joe Liu, Leon Zhang
  • Patent number: 10747617
    Abstract: Techniques manage a storage system and involve: determining priorities of a first set of to-be-executed operations of a first stripe of a plurality of stripes of the storage system and priorities of a second set of to-be-executed operations of a second stripe, the plurality of stripes at least including the first stripe and the second stripe different from the first stripe, and each of the plurality of stripes including a plurality of extents distributed on different storage devices; determining a first to-be-executed operation with the highest priority among the priorities of the first set of to-be-executed operations; determining a second to-be-executed operation with the highest priority among the priorities of the second set of to-be-executed operations; and determining operation execution priorities of the first and second stripes based on the priorities of the first and second to-be-executed operations. Accordingly, the processing performance of the storage system is increased.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: August 18, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Hongpo Gao, Jian Gao, Geng Han, Yousheng Liu, Shaoqin Gong
  • Patent number: 10747460
    Abstract: Techniques change a type of a storage system. The techniques involve: determining, from a resource pool associated with the storage system, a set of used disks utilized by one stripe of the storage system and a set of spare disks unutilized by the stripe; determining a neighboring relationship between spare disks in the set of spare disks and used disks in the set of used disks, the neighboring relationship indicating a number of adjacencies between the spare disks and the used disks in a period of history time; selecting, based on the neighboring relationship, one spare disk from the set of spare disks as an expanded disk of the stripe; and updating the stripe of the storage system using extents of the expanded disk. Accordingly, the type of the storage system may be changed based on the existing resources to improve reliability and operating efficiency.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: August 18, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Lei Sun, Jian Gao, Geng Han, Jibing Dong, Hongpo Gao, Xiongcheng Li
  • Publication number: 20200257626
    Abstract: A method and system for managing a buffer device in a storage system. The method comprising determining a first priority for a first queue included in the buffer device, the first queue comprising at least one data page associated with a first storage device in the storage system; in at least one round, in response to the first priority not satisfying a first predetermined condition, updating the first priority according to a first updating rule, the first updating rule making the updated first priority much closer to the first predetermined condition than the first priority; and in response to the first priority satisfying the first predetermined condition, flushing data in a data page in the first queue to the first storage device.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Inventors: Xinlei Xu, Jian Gao, Yousheng Liu, Changyu Feng, Geng Han
  • Publication number: 20200257636
    Abstract: In a method and apparatus for storage management, a method includes: creating a plurality of profiles for address mapping, the profiles comprising a part of mapping relation in the total mapping table and creating an index for a part of the plurality of profiles to accelerate the lookup speed. A corresponding device and computer program product are also disclosed.
    Type: Application
    Filed: April 13, 2020
    Publication date: August 13, 2020
    Inventors: Geng Han, Jian Gao, Weihua Li, Jamin Kang, Jibing Dong
  • Patent number: 10739252
    Abstract: The present application relates to a terahertz transmitting antenna including a microstrip feed line, a substrate, at least two antenna switches, at least one conducting plate, an insulating layer and at least two antenna patches. The terahertz transmitting antenna is provided with at least two antenna switches and at least two corresponding antenna patches, which substantially increases a transmitting bandwidth and a corresponding transmitting power of the terahertz transmitting antenna. The terahertz transmitting antenna with the increased transmitting bandwidth and the increased transmitting power can be applied to a small sized terahertz spectral detection device to assist the transmitting source to transmit the signal in the terahertz band. The terahertz transmitting antenna adopting the multi-frequency switching technology can reduce an operation time of a spectral fingerprint recognition algorithm to rapid identify specific target substances.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: August 11, 2020
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Xiao-Ping Zheng, Xia-Hui Han, Hua Geng, Sheng-Chuang Bai, Xiao-Jiao Deng
  • Patent number: 10740020
    Abstract: Embodiments of the present disclosure relate to a method, device and computer program product for managing a disk array. The method comprises determining respective degrees of wear for a plurality of disks in the disk array, each of the plurality of disks comprising a plurality of disk extents, and each disk extent comprising a plurality of blocks. The method further comprises determining respective numbers of blocks that are accumulatively written into the plurality of disks during a predetermined period of time. The method further comprises migrating data among the plurality of disks based on the degrees of wear and the number of the accumulatively written blocks.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: August 11, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Shaoqin Gong, Jian Gao, Geng Han, Jamin Kang, Xinlei Xu
  • Publication number: 20200225861
    Abstract: A method and system for managing a storage system, the method comprising: creating a storage system including a first number of stripes, wherein each of the first number of stripes includes a second number of extents, and each of the second number of extents is distributed over a different storage device in a group of storage devices; with respect to a stripe among the first number of stripes, generating stripe information descriptive of a mapping relation between the second number of extents included in the stripe and the different storage devices in the group of storage devices; and with respect to a storage device where an extent among the second number of extents is located, building extent information about a mapping relation between an extent in the storage device and the stripe. In one embodiment of the present invention, there is provided a corresponding device and system.
    Type: Application
    Filed: March 20, 2020
    Publication date: July 16, 2020
    Inventors: Jian Gao, Geng Han, Jibing Dong, Jamin Jianbin Kang, Hongpo Gao, Xinlei Xu
  • Patent number: 10705931
    Abstract: Embodiments of the present disclosure relate to methods, devices and computer readable mediums for managing a storage system. The storage system includes a disk array which includes at least one disk array group. The method comprises in response to receiving a first message indicating that a failure occurs in a disk in the disk array, determining first information on a disk array group that the failed disk belongs to. The method further comprises obtaining a first number of outstanding input/output (I/O) operations on rebuilding the failed disk in the disk array group. The method further comprises determining, based on the first information and the first number, a threshold number of I/O operations that is applicable for the disk array group. In addition, the method further comprises controlling, based on the threshold number, the number of I/O operations initiated to the disk array group.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: July 7, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Lifeng Yang, Xinlei Xu, Jian Gao, Jibing Dong, Geng Han
  • Patent number: 10705971
    Abstract: Embodiments of the present disclosure relate to a method, a device and a computer readable medium for managing a storage system. The method can determine a mapping between a logical storage extent and a plurality of storage devices in a storage pool without storing a table of the mapping. Further, the method can record a new mapping after a storage devices fails and restore the original mapping after the failed storage device is replaced.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: July 7, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Geng Han, Wayne Weihua Li, Jian Gao, Jamin Kang, Shaoqin Gong
  • Patent number: 10705760
    Abstract: Techniques perform I/O management. The techniques involve: in response to receiving an I/O request for a redundant array of independent disks (RAID), placing the I/O request in a corresponding waiting queue based on a stripe related to the I/O request in the RAID; and in response to the I/O request being granted to process, executing the I/O request based on storage of data of the stripe in a cache memory. Accordingly, by using the cache mechanism for the stripes, the I/O processing efficiency is improved and the user experience is enhanced. Moreover, the count of access to the RAID is reduced, the bandwidth for the backend access is saved and the system performance is improved.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: July 7, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Jibing Dong, Geng Han, Hongpo Gao, Jianbin Kang, Xinlei Xu, Lifeng Yang
  • Patent number: 10705742
    Abstract: Techniques manage a storage system. Such techniques involve: determining an expected input/output (I/O) concurrency number of an access request for a storage system, the access request being associated with a first one of a plurality of redundant arrays of independent disks (RAIDs) comprised in the storage system; in response to a current available I/O concurrency number of the first RAID being less than the expected I/O concurrency number, increasing the available I/O concurrency number of the first RAID based on a reserved I/O concurrency number of the storage system; and performing the access request using the first RAID having the increased available I/O concurrency number.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: July 7, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Baote Zhuo, Jian Gao, Jibing Dong, Geng Han, Xinlei Xu, Jianbin Kang
  • Publication number: 20200210298
    Abstract: Embodiments of the present disclosure provide a method and device for RAID rebuilding. In some embodiments, there is provided a computer-implemented method. The method comprises: determining a spare redundant array of independent disks (RAID) group with spare capacity from a plurality of disks included in at least one RAID group of a storage pool; building spare logic units from the spare RAID group; and in response to a RAID group of the at least one RAID group of the storage pool being in a degradation state, rebuilding a failed disk in a degraded RAID group using the spare logic units.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Inventors: Jian Gao, Geng Han, Jibing Dong, Lifeng Yang, Xinlei Xu