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).

  • METHOD, DEVICE, AND COMPUTER READABLE STORAGE MEDIUM FOR MANAGING REDUNDANT ARRAY OF INDEPENDENT DISKS
    Publication number: 20200133775
    Abstract: Techniques manage a redundant array of independent disks. In such a technique, a response time of a first storage device in the RAID is compared to a first threshold. In response to the response time of the first storage device exceeding the first threshold, the first storage device is configured as a pseudo-degraded storage device, such that the pseudo-degraded storage device is responsive to write requests only.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 30, 2020
    Inventors: Jianbin Kang, Jian Gao, Geng Han
  • METHOD, ELECTRONIC DEVICE AND COMPUTER PROGRAM PRODUCT FOR DATA STORAGE
    Publication number: 20200133869
    Abstract: Techniques perform data storage. Such techniques may involve writing metadata to a first cache of a first processor, the metadata indicating allocation of a storage resource to user data. Such techniques may further involve determining an address range of the metadata in the first cache. Such techniques may further involve copying only data stored in the address range in the first cache to a second cache of a second processor. Accordingly, the data transmission volume between two processors is reduced, which helps to improve the overall performance of a storage system.
    Type: Application
    Filed: September 19, 2019
    Publication date: April 30, 2020
    Inventors: Yousheng Liu, Geng Han, Jian Gao, Ruiyong Jia, Jianbin Kang
  • METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR MANAGING STORAGE SPACE
    Publication number: 20200133848
    Abstract: Techniques involve managing a storage space. In response to receiving an allocation request for allocating a storage space, a storage space size and a slice size are obtained. A first storage system and a second storage system are selected from multiple storage systems, the first storage system and the second storage system includes a first storage device group and a second storage device group respectively, and the first storage device group does not overlap the second storage device group. A first slice group and a second slice group is obtained from the first storage system and the second storage system respectively, on the basis of the size of the storage space and the size of the slice. A user storage system is built at least on the basis of the first slice group and the second slice group, so as to respond to the allocation request.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 30, 2020
    Inventors: Xinlei Xu, Xiongcheng Li, Lifeng Yang, Geng Han, Jian Gao
  • PROACTIVE COPY IN A STORAGE ENVIRONMENT
    Publication number: 20200133514
    Abstract: Techniques manage a Redundant Array of Independent Disks (RAID). In such a technique, in response to receiving information indicative of an end-of-life (EOF) of a first storage device of the RAID, a storage extent associated with the first storage device is determined, the storage extent being distributed over a plurality of storage devices of the RAID and including a first group of slices in the first storage device, the storage extent including a plurality of data blocks stored thereon. A portion of a data block of the plurality of data blocks is read from a first slice of the first group of slices, the first slice comprising the portion of the data block. The portion of the data block is written into a spare slice.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 30, 2020
    Inventors: Xinlei Xu, Jian Gao, Geng Han
  • Method and apparatus for controlling access to a disk array
    Patent number: 10613770
    Abstract: A method and an apparatus for controlling an access to a disk array. The method comprises: receiving a command for writing to a first stripe of the plurality of stripes; and determining a first parity position for the first stripe by searching a mapping table, the mapping table recording a first mapping between the first stripe and the first parity position allocated in the first stripe, the first parity position being arranged in a first disk of the plurality of disks having a minimum wearing level. The embodiments of the present disclosure further disclose a corresponding apparatus. The embodiments of the present disclosure provides a solution for controlling an access to a disk array, which can achieve a dynamic balance of wearing levels among all of the disks in a RAID, thereby making it possible to control or manage a failure order of the disks.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: April 7, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Jian Gao, Jibing Dong, Xinlei Xu, Lifeng Yang, Geng Han
  • Method and system for managing storage system
    Patent number: 10599357
    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: Grant
    Filed: September 20, 2017
    Date of Patent: March 24, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Jian Gao, Geng Han, Jibing Dong, Jamin Jianbin Kang, Hongpo Gao, Xinlei Xu
  • Assignment of newly added data storage drives to an original data storage drive partnership group and a new data storage drive partnership group in a mapped RAID (redundant array of independent disks) system
    Patent number: 10592111
    Abstract: Technology within a mapped RAID (Redundant Array of Independent Disks) data storage system for avoiding wasted capacity in a hybrid array of data storage drives. Drives from a set of new drives may be added to an original partnership group of drives such that the number of highest capacity drives in the original partnership group remains or is made to be at least as large as a minimum number of drives required to provide RAID data protection. Drives may also be added to the original partnership group such that the number of highest capacity drives in a newly created partnership group is also at least as large as the minimum number of drives required to provide RAID data protection. The minimum required number of drives may be equal to or greater than the total number of drive extents indicated by each RAID extent in a RAID mapping table.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: March 17, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Sheng Wang, Jibing Dong, Geng Han, Xinlei Xu, Jian Gao, Sun Ree, Michael Wahl
  • Method, apparatus and computer program product for queueing I/O requests on mapped RAID
    Patent number: 10592165
    Abstract: There is disclosed techniques for queuing I/O requests on Mapped RAID. The techniques comprising queuing a pending I/O request in a queue. The techniques also comprising determining that sufficient credits are available to enable a number of storage devices of a plurality of storage devices in a Mapped RAID group to process the pending I/O request. The techniques further comprising processing the pending I/O request upon determining that there is sufficient credits.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: March 17, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Geng Han, Jibing Dong, Jian Gao, Xinlei Xu, Jamin Kang, Naizhong Chiu
  • Method and apparatus for managing storage system
    Patent number: 10592365
    Abstract: The present invention discloses a method and device for managing a storage system. Specifically, in one embodiment of the present invention, there is proposed a method for managing a storage system, the storage system comprising a buffer device and a plurality of storage devices. The method comprises: receiving an access request with respect to the storage system; determining a storage device among the plurality of storage devices has been failed; and in response to the access request being an access request with respect to the failed storage device, serving the access request with data in the buffer device so as to reduce internal data access in the storage system. In one embodiment of the present invention, there is proposed a device for managing a storage system.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 17, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Xinlei Xu, Jian Gao, Yousheng Liu, Changyu Feng, Geng Han
  • Avoiding storage device overlap in raid extent sub group and keeping relationship balance on mapped raid system and method
    Patent number: 10592138
    Abstract: A method, computer program product, and computer system for adding, by a computing device, a plurality of disks in an extent pool to an available disk list. It may be determined, for a Mapped RAID group, that each RAID extent in a sub group has not been allocated. At least one RAID extent in the sub group may be allocated based upon, at least in part, determining that each RAID extent in a sub group has not been allocated.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: March 17, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Geng Han, Ilya Usvyatsky, Jian Gao, Jamin Kang, Jibing Dong, Hongpo Gao
  • Method and device for rebuilding RAID
    Patent number: 10592366
    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: Grant
    Filed: December 19, 2017
    Date of Patent: March 17, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Jian Gao, Geng Han, Jibing Dong, Lifeng Yang, Xinlei Xu
  • METHOD AND DEVICE FOR SELECTING RAID LEVEL FOR MAPPED RAID
    Publication number: 20200064999
    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: Application
    Filed: September 16, 2019
    Publication date: February 27, 2020
    Inventors: Geng Han, Hongpo Gao, Jibing Dong, Jian Gao, Xinlei Xu
  • Method and system for managing storage device
    Patent number: 10572163
    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: Grant
    Filed: June 15, 2017
    Date of Patent: February 25, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Yousheng Liu, Geng Han, Jibing Dong, Ruiyong Jia, Jian Gao, Xinlei Xu
  • Processing a write request using a redundant array of independent disks (RAID)
    Patent number: 10564878
    Abstract: Implementations of the subject matter described herein provide a storage management method and system. The storage management method comprises: in response to receiving a write request, dividing data to be written into a plurality of data blocks with a predetermined size, the plurality of data blocks having their respective logic block addresses; evenly mapping, based on the logic block addresses, the plurality of data blocks to a plurality of RAID extents of a Redundant Array of Independent Disks (RAID); mapping the plurality of data blocks in the plurality of RAID extents to the disk, so that the plurality of data blocks are distributed in order of size of logic block addresses in the disk.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: February 18, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Jamin Jianbin Kang, Liam Xiongcheng Li, Jian Gao, Geng Han, Xinlei Xu
  • EVALUATION FOR REBUILDING PERFORMANCE OF REDUNDANT ARRAYS OF INDEPENDENT DISKS
    Publication number: 20200050514
    Abstract: Embodiments of the present disclosure provide a solution of evaluating a rebuilding performance of a redundant array of independent disks. In some embodiments, there is provided a computer-implemented method, comprising: simulating, based on a first group of redundant arrays of independent disks, a rebuilding process for a second group of redundant arrays of independent disks; obtaining a first performance metric of the simulated rebuilding process; and identifying a factor associated with the rebuilding performance of the second group of redundant arrays of independent disks based on the first performance metric.
    Type: Application
    Filed: October 22, 2019
    Publication date: February 13, 2020
    Inventors: Jian Gao, Hongpo Gao, Geng Han, Jibing Dong, Xinlei Xu
  • METHOD AND APPARATUS FOR SCALING OUT STORAGE DEVICES AND SCALED-OUT STORAGE DEVICES
    Publication number: 20200042188
    Abstract: Embodiments of the present disclosure relate to method and apparatus for scaling out storage devices, and scaled-out storage devices by establishing a cross-device link between a first storage device and a second storage device; exchanging configuration information of at least one of the first storage device and the second storage via the cross-device link; creating, in the first storage device, a shadow object corresponding to a real object in the second storage device; and creating, in the second storage device, a shadow object corresponding to a real object in the first storage device; wherein each shadow object can expose feature and/or state of a corresponding real object to users without implementing a functioning logic of the corresponding real object.
    Type: Application
    Filed: October 15, 2019
    Publication date: February 6, 2020
    Inventors: Jian Gao, Hongpo Gao, Geng Han, Xinlei Xu
  • Determining an effective capacity of a drive extent pool generated from one or more drive groups in an array of storage drives of a data storage system that uses mapped RAID (redundant array of independent disks) technology
    Patent number: 10552078
    Abstract: Technology for determining an effective capacity of a drive extent pool that is generated from at least one group of storage drives. A sub-group of storage drives having relatively higher physical capacities is selected from the group. The number of storage drives in the sub-group is equal to a total number of drive extents indicated by each entry in a RAID mapping table. Each storage drive in the sub-group is assigned an individual effective capacity equal to an individual physical capacity of a storage drive in the sub-group having the smallest individual physical capacity. Each storage drive in the group not contained in the sub-group is assigned an individual effective capacity equal to its own physical capacity. An effective capacity of the drive extent pool is set to a sum of the all the individual effective capacities assigned to the storage drives in the group of storage drives.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: February 4, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Shaoqin Gong, Jian Gao, Hongpo Gao, Geng Han, Jibing Dong, Jamin Kang
  • MANAGING MAPPED RAID EXTENTS IN DATA STORAGE SYSTEMS
    Publication number: 20200034235
    Abstract: A technique for use in managing mapped RAID extents is disclosed. A neighborhood matrix denoting a distribution of neighboring physical storage portions across the N physical storage devices of the pool is created and initialized. A disk extent consumed array denoting a disk consumption metric is created and initialized. Disks in an extent pool are analyzed to identify a least consumed disk in the extent pool and a disk extent is allocated from the identified disk. The allocated disk extent is configured as a first disk extent for a first RAID extent. The neighborhood matrix and disk extent consumed array are updated appropriately. All the disks in the extent pool are analyzed to identify a valid disk extent that will result in the lowest variance value in the neighborhood matrix. The identified valid disk extent is allocated and the neighborhood matrix and disk extent consumed array are again updated.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Applicant: EMC IP Holding Company LLC
    Inventors: Jian Gao, Ilya Usvyatsky, Weihua Li, Geng Han, Xinlei Xu, Jibing Dong
  • METHOD, DEVICE AND COMPUTER PROGRAM PRODUCT FOR MANAGING METADATA AT A CONTROL DEVICE
    Publication number: 20200034291
    Abstract: Techniques for managing metadata at a control device involve: determining, from a cache page corresponding to user data, a first region for storing raw metadata of the user data, the raw metadata including address information for storing the user data in a storage system; in response to the user data being modified, determining updated metadata of the modified user data to update the raw metadata in the first region; and copying the updated metadata to a high-speed memory shared by the control device and another control device. Accordingly, the techniques are capable of reducing the usage frequency of the high-speed memory, thereby extending the service life of the high-speed memory and reducing cost.
    Type: Application
    Filed: July 16, 2019
    Publication date: January 30, 2020
    Inventors: Geng Han, Yousheng Liu, Xiongcheng Li, Lifeng Yang, Jianbin Kang
  • METHOD, DEVICE, AND COMPUTER PROGRAM PRODUCT FOR READING DATA
    Publication number: 20200026439
    Abstract: Techniques are directed to reading data. Such techniques involve in response to receiving a read request for the target data, determining that target data is stored in both a first storage device and a second storage device. Such techniques further involve determining at least one of reliability and access load for each of the first storage device and the second storage device. Such techniques further involve: determining, based on the at least one of the reliability and the access load, one of the first storage device and the second storage device as a target storage device so as to respond to the read request. By means of certain techniques, at least one of the access load and service lives is balanced between storage devices so as to improve the efficiency of data read and the overall performance of a storage system.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 23, 2020
    Inventors: Hongpo Gao, Jian Gao, Xinlei Xu, Geng Han, Jianbin Kang