Patents by Inventor Wayne Weihua
Wayne Weihua 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).
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Patent number: 11093406Abstract: 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: GrantFiled: April 13, 2020Date of Patent: August 17, 2021Assignee: EMC IP Holding Company LLCInventors: Geng Han, Jian Gao, Wayne Weihua Li, Jamin Kang, Jibing Dong
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Patent number: 11003359Abstract: Embodiments of the present disclosure provide a method of managing a disk pool, the disk pool having a plurality of disks which are divided into a plurality of disk extents, the method comprising: determining the number of input/output (I/O) requests for disk extents in the disk pool within a predetermined period of time; determining respective hotness of the disk extents based on the number of I/O requests; determining hotness of the disks based on the hotness of the disk extents; and determining migration of data in the disk extents based on the hotness of the disk.Type: GrantFiled: April 17, 2018Date of Patent: May 11, 2021Assignee: EMC IP Holding Company LLCInventors: Wayne Weihua Li, Jian Gao, Hongpo Gao, Jamin Kang, Xinlei Xu, Tao Xu
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Patent number: 10789004Abstract: 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: GrantFiled: October 26, 2018Date of Patent: September 29, 2020Assignee: EMC IP Holding Company LLCInventors: Jian Gao, Wayne Weihua Li, Geng Han, Jamin Kang, Jibing Dong
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Patent number: 10776205Abstract: Techniques are disclosed for managing data storage. In one embodiment, the techniques determine one or more RAID extents having a disk extent supported by an extent of storage on a storage device in an inoperative state. Each of the RAID extents contains a respective set of disk extents allocated to that RAID extent and each disk extent is supported by an extent of storage on a storage device of the set of storage devices. The techniques also comprise evaluating a set of values, wherein each value indicates, for a corresponding pair of storage devices from the set of storage devices, a number of RAID extents which contain disk extents belonging to both storage devices of the pair.Type: GrantFiled: April 30, 2018Date of Patent: September 15, 2020Assignee: EMC IP Holding Company LLCInventors: Wayne Weihua Li, Jian Gao, Jamin Kang, Sheng Wang, Charles Chun Ma
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Patent number: 10705971Abstract: 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: GrantFiled: April 17, 2018Date of Patent: July 7, 2020Assignee: EMC IP Holding Company LLCInventors: Geng Han, Wayne Weihua Li, Jian Gao, Jamin Kang, Shaoqin Gong
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Patent number: 10657066Abstract: Embodiments of the present disclosure provide a method and an apparatus for storage management. For example, there is provided a method comprising: 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: GrantFiled: April 17, 2018Date of Patent: May 19, 2020Assignee: EMC IP Holding Company LLCInventors: Geng Han, Jian Gao, Wayne Weihua Li, Jamin Kang, Jibing Dong
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Patent number: 10394478Abstract: Embodiments of the present disclosure provide a method and device for storage management. For example, there is proposed a method comprising: in response to a plurality of storage devices in a storage system being to be allocated to an unallocated logic storage area, determining a plurality of allocation schemes for allocating the plurality of storage devices to the unallocated logic storage area; obtaining allocation uniformity of the plurality of storage devices with respect to an allocated logic storage area of the storage system; and selecting one of the plurality of allocation schemes at least based on the allocation uniformity, such that the uniform degree of the allocation has a minimum variation. Corresponding device and computer program product are also disclosed.Type: GrantFiled: December 19, 2017Date of Patent: August 27, 2019Assignee: EMC IP Holding Company LLCInventors: Wayne Weihua Li, Geng Han, Jian Gao, Jibing Dong, Hongpo Gao
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Publication number: 20190235957Abstract: Techniques are disclosed for managing data storage. In one embodiment, the techniques determine one or more RAID extents having a disk extent supported by an extent of storage on a storage device in an inoperative state. Each of the RAID extents contains a respective set of disk extents allocated to that RAID extent and each disk extent is supported by an extent of storage on a storage device of the set of storage devices. The techniques also comprise evaluating a set of values, wherein each value indicates, for a corresponding pair of storage devices from the set of storage devices, a number of RAID extents which contain disk extents belonging to both storage devices of the pair.Type: ApplicationFiled: April 30, 2018Publication date: August 1, 2019Inventors: Wayne Weihua Li, Jian Gao, Jamin Kang, Sheng Wang, Charles Chun Ma
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Publication number: 20190129644Abstract: 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: ApplicationFiled: October 26, 2018Publication date: May 2, 2019Inventors: Jian Gao, Wayne Weihua, Geng Han, Jamin Kang, Jibing Dong
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Publication number: 20180300254Abstract: Embodiments of the present disclosure provide a method and an apparatus for storage management. For example, there is provided a method comprising: 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: ApplicationFiled: April 17, 2018Publication date: October 18, 2018Inventors: Geng Han, Jian Gao, Wayne Weihua Li, Jamin Kang, Jibing Dong
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Publication number: 20180300066Abstract: Embodiments of the present disclosure provide a method of managing a disk pool, the disk pool having a plurality of disks which are divided into a plurality of disk extents, the method comprising: determining the number of input/output (I/O) requests for disk extents in the disk pool within a predetermined period of time; determining respective hotness of the disk extents based on the number of I/O requests; determining hotness of the disks based on the hotness of the disk extents; and determining migration of data in the disk extents based on the hotness of the disk.Type: ApplicationFiled: April 17, 2018Publication date: October 18, 2018Inventors: Wayne Weihua Li, Jian Gao, Hongpo Gao, Jamin Kang, Xinlei Xu, Tao Xu
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Publication number: 20180300252Abstract: 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: ApplicationFiled: April 17, 2018Publication date: October 18, 2018Inventors: Geng Han, Wayne Weihua Li, Jian Gao, Jamin Kang, Shaoqin Gong
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Publication number: 20180173445Abstract: Embodiments of the present disclosure provide a method and device for storage management. For example, there is proposed a method comprising: in response to a plurality of storage devices in a storage system being to be allocated to an unallocated logic storage area, determining a plurality of allocation schemes for allocating the plurality of storage devices to the unallocated logic storage area; obtaining allocation uniformity of the plurality of storage devices with respect to an allocated logic storage area of the storage system; and selecting one of the plurality of allocation schemes at least based on the allocation uniformity, such that the uniform degree of the allocation has a minimum variation. Corresponding device and computer program product are also disclosed.Type: ApplicationFiled: December 19, 2017Publication date: June 21, 2018Inventors: Wayne Weihua Li, Geng Han, Jian Gao, Jibing Dong, Hongpo Gao