Patents by Inventor Man Lv

Man Lv 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: 10545841
    Abstract: Embodiments of the present disclosure relate to a method and an apparatus for backup communication. The method comprises: detecting a failure of a management interface between a processor and a baseboard management controller; in response to detecting the failure of the management interface, performing backup communication between the processor and the baseboard management controller using a control interface, wherein the baseboard management controller can obtain a physical parameter of the processor via the control interface; and transmitting a packet between the processor and the baseboard management controller via the control interface.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: January 28, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Qichao Xia, Wei Zheng, Colin Yong Zou, Phoebe Ningning Cheng, Man Lv, Mengwei Jiao
  • Publication number: 20200012445
    Abstract: Embodiments of the present disclosure provide methods and apparatus for path selection in a storage system. The storage system includes a plurality of storage devices, each storage device being connected to a plurality of different HBA ports of a server via a plurality of paths; the method comprises: monitoring a system-wide performance metric of the storage system to obtain dynamic performance statistics; detecting a performance-related event based on the dynamic performance statistics; and selecting, from the plurality of paths, an active path for a storage device of the plurality of storage devices based on the dynamic performance statistics and a result of the detecting. With the methods or apparatus according to the embodiments of the present disclosure, performance bottleneck can be avoided or timely eliminated, load balance can be achieved, and system resources can be utilized more effectively.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Inventors: Bing Liu, Man Lv, James Lei Ni, Martin Chaojun Mei
  • Patent number: 10416914
    Abstract: Embodiments of the present disclosure provide methods and apparatus for path selection in a storage system. The storage system includes a plurality of storage devices, each storage device being connected to a plurality of different HBA ports of a server via a plurality of paths; the method comprises: monitoring a system-wide performance metric of the storage system to obtain dynamic performance statistics; detecting a performance-related event based on the dynamic performance statistics; and selecting, from the plurality of paths, an active path for a storage device of the plurality of storage devices based on the dynamic performance statistics and a result of the detecting. With the methods or apparatus according to the embodiments of the present disclosure, performance bottleneck can be avoided or timely eliminated, load balance can be achieved, and system resources can be utilized more effectively.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: September 17, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Bing Liu, Man Lv, James Lei Ni, Martin Chaojun Mei
  • Patent number: 10409517
    Abstract: Embodiments of the present disclosure provide a device for data backup comprising: a secondary backup device coupled to a primary backup device, the secondary backup device further comprising: data segmentation unit operable to divide target data to be backed up into a plurality of data segments; data fingerprint generation unit operable to generate a corresponding data fingerprint for each data segment from a plurality of data segments, and providing the data fingerprint to the primary backup device for backing up the target data at the primary backup device, wherein the data fingerprint is a mapped data segment of a length less than a corresponding data segment length.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: September 10, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Colin Yong Zou, Kun Wang, Sean Cheng Ye, Junping Frank Zhao, Man Lv
  • Patent number: 10402260
    Abstract: Various embodiments of the present disclosure provide a method and apparatus for handling errors in a storage system. The method includes: determining configuration of a failed platform of a storage system; based on the determined configuration of the platform, determining policy for handling errors; and in response to detecting the errors, handling errors with the policy.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: September 3, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Bing Liu, Man Lv, Alice Cuicui Zhao, Martin Chaojun Mei
  • Publication number: 20190266005
    Abstract: Embodiments of the present disclosure provide a method and an apparatus for a virtual machine. The method implemented in a virtual machine comprises: receiving I/O requests for I/O operations on virtual disks of the virtual machine; detecting associations between the virtual disks and virtual storage devices of a virtual machine hypervisor for the virtual machine; and scheduling the I/O requests based on the associations. Embodiments of the present disclosure enable an application-aware I/O QoS in a virtual environment in an efficiently way and moving IT solutions of virtual version to different virtual platforms. The method and apparatus according to the embodiments of the present disclosure offer good flexibility and compatibility.
    Type: Application
    Filed: May 9, 2019
    Publication date: August 29, 2019
    Inventors: Bing Liu, Man Lv, Eric Yang Song
  • Patent number: 10372477
    Abstract: Embodiments of the present disclosure provide a method and an apparatus for a virtual machine. The method implemented in a virtual machine comprises: receiving I/O requests for I/O operations on virtual disks of the virtual machine; detecting associations between the virtual disks and virtual storage devices of a virtual machine hypervisor for the virtual machine; and scheduling the I/O requests based on the associations. Embodiments of the present disclosure enable an application-aware I/O QoS in a virtual environment in an efficiently way and moving IT solutions of virtual version to different virtual platforms. The method and apparatus according to the embodiments of the present disclosure offer good flexibility and compatibility.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: August 6, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Bing Liu, Man Lv, Eric Yang Song
  • Patent number: 10346238
    Abstract: Embodiments of the present disclosure provide a method, a computer program product and an apparatus for determining a failure location in a storage system by obtaining performance information of a disk; in response to the performance information indicating that at least one or more performance indices exceed a corresponding predetermined threshold, determining whether a health condition of the disk is normal based on at least one or more performance indices; and in response to determining that the health condition of the disk is normal, determining a failure location based on the health condition information of at least one or more elements in a communication path of the disk, and it may be diagnosed whether a failure occurs to the disk per se or in its communication path, and before a potential failure occurs to the disk, it may also predict the failure thereby preventing data loss.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: July 9, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Man Lv, Chris Zirui Liu, Colin Yong Zou
  • Publication number: 20190129787
    Abstract: Embodiments of the present disclosure provide a method, device and computer program product for managing an input/output (I/O) stack. The method comprises obtaining metadata related to an I/O request stored in the I/O stack, the metadata at least comprising a timestamp when the I/O request is placed in the I/O stack; determining, based on the timestamp, a length of time during which the I/O request waits for processing; and in response to the length of time exceeding a threshold time length, performing a predetermined operation on the I/O request to prevent the I/O stack from being congested.
    Type: Application
    Filed: October 22, 2018
    Publication date: May 2, 2019
    Inventors: Bing Liu, Man LV
  • Publication number: 20190129785
    Abstract: Embodiments of the present disclosure relate to a method and device for identifying a problematic component in a storage system. The method comprises determining, based on history error logs of components of the storage system, a graph indicating error information of the components, where nodes in the graph indicate the components, and edges in the graph indicate connections between the components; the method further comprises identifying, based on the graph, an error source in the components of the storage system to be the problematic component. With the method and device of the present disclosure, the error source in the storage system can be identified more accurately and effectively and user experience can be enhanced.
    Type: Application
    Filed: October 23, 2018
    Publication date: May 2, 2019
    Inventors: Bing Liu, Man Lv, Fang You
  • Patent number: 10198196
    Abstract: Various embodiments of the present disclosure provide a method and apparatus for monitoring health condition of a hard disk by obtaining full-dimensional characteristics associated with the hard disk, wherein the full-dimension characteristics comprise at least two of: hard disk performance information, data integrity information, input/output I/O correctness information, and a hard disk Self-Monitoring Analysis and Reporting Technology S.M.A.R.T. report, and determining the health condition of the hard disk based on the full-dimension characteristics.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: February 5, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Man Lv, Chris Zirui Liu, Colin Yong Zou
  • Publication number: 20180352032
    Abstract: A method and system for backing up and restoring data includes: determining, at a server storage area network (SAN) node, an LUN required for protection within a server SAN node based on communication between a backup agent and a logic unit number (LUN) agent in the server SAN node; determining a target backup device based on communication between the backup agent and respective target agent of a plurality of backup devices, the plurality of backup devices being connected with the server SAN node; and transmitting a virtual disk control command to the target backup device in response to the backup or restoration being triggered, such that data in the LUN required for protection is backed up to the target backup device or restored from the target backup device via an activated virtual disk interface of the target backup device.
    Type: Application
    Filed: June 4, 2018
    Publication date: December 6, 2018
    Inventors: Ried Ruifang Liu, Yong Zou, Man Lv, Tao Xu
  • Publication number: 20180349234
    Abstract: Embodiments of the present disclosure provide a method for a storage system, a storage system and a computer program product. The method comprises determining a first drive in a drive array is temporarily unavailable. The method further comprises setting the first drive in a frozen state. The method further comprises: in response to receiving a write request for the first drive during the frozen state, pending the write request or recording the write request in a second drive in the drive array. The method further comprises: in response to receiving a read request for the first drive during the frozen state, reconstructing data to which the read request is directed through data stored in a third drive in the drive array.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 6, 2018
    Inventors: Bing Liu, Man Lv
  • Publication number: 20180088809
    Abstract: Embodiments of the present disclosure provide a method of storage management and an electronic device. The method of storage management includes collecting information indicating an access error in an access path for accessing a storage device; performing a failure diagnosis on the access path based on the access error, the failure diagnosis including at least one of a first diagnosis related to a topology, a second diagnosis related to a history access error, or a third diagnosis related to a protocol; and providing an output related to health status of the access path based on the failure diagnosis.
    Type: Application
    Filed: September 20, 2017
    Publication date: March 29, 2018
    Inventors: Bing Liu, Man Lv
  • Publication number: 20180018194
    Abstract: Embodiments of the present disclosure provide a method and an apparatus for a virtual machine. The method implemented in a virtual machine comprises: receiving I/O requests for I/O operations on virtual disks of the virtual machine; detecting associations between the virtual disks and virtual storage devices of a virtual machine hypervisor for the virtual machine; and scheduling the I/O requests based on the associations. Embodiments of the present disclosure enable an application-aware I/O QoS in a virtual environment in an efficiently way and moving IT solutions of virtual version to different virtual platforms. The method and apparatus according to the embodiments of the present disclosure offer good flexibility and compatibility.
    Type: Application
    Filed: June 21, 2017
    Publication date: January 18, 2018
    Inventors: Bing Liu, Man Lv, Eric Yang Song
  • Publication number: 20170371707
    Abstract: Embodiments of the present disclosure provide a method of analyzing data in a storage system, a storage system, and a computer program product. The method includes: in response to detecting a request for a data analytic job, obtaining target data for the data analytic job from a first storage device of the storage system. The method also includes storing the target data into a second storage device of the storage system that is assigned for data analysis, and performing the data analytic job using a data processing device and the second storage device in the storage system.
    Type: Application
    Filed: June 21, 2017
    Publication date: December 28, 2017
    Inventors: Colin Yong Zou, Xiangqing Yang, Man Lv, Wei Lin
  • Publication number: 20170364266
    Abstract: Embodiments of the present disclosure relate to a method and a device of managing input/output of a storage device. The storage device at least includes a first I/O port and a second I/O port. The method comprises receiving a first I/O request for the storage device, and determining a type of the first I/O request. Based on the type of the first I/O request, the first I/O request is dispatched to the first I/O port or the second I/O port. If the first I/O request is a read request, the first I/O request may be dispatched to the first I/O port, and if the first I/O request is determined as a write request, the first I/O request may be dispatched to the second I/O port. The method may reuse at least one of the first I/O port or the second I/O port.
    Type: Application
    Filed: June 21, 2017
    Publication date: December 21, 2017
    Inventors: Tao Xu, Man Lv, Bing Liu, James Lei Ni
  • Patent number: 9798534
    Abstract: Embodiments are directed to a method of online storage device firmware upgrades by suspending input/output (I/O) operations to the storage device upon notification of a firmware upgrade to the storage device, maintaining a stripe log that contains data stripes updated by I/O operations issued to the storage device during suspension of the storage device, triggering the firmware upgrade to the storage device while the storage device is in suspension, reactivating the disk and new firmware upon completion of the firmware upgrade, and reconstructing the updated data stripes from the stripe log on the storage device after the reactivating step.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: October 24, 2017
    Assignee: EMC IP Holding Company LLC
    Inventors: Zhengli Yi, Colin Zou, Joel Miller, Chris Liu, Man Lv
  • Publication number: 20170269990
    Abstract: Various embodiments of the present disclosure provide a method and apparatus for handling errors in a storage system. The method includes: determining configuration of a failed platform of a storage system; based on the determined configuration of the platform, determining policy for handling errors; and in response to detecting the errors, handling errors with the policy.
    Type: Application
    Filed: March 20, 2017
    Publication date: September 21, 2017
    Inventors: Bing Liu, Man Lv, Alice Cuicui Zhao, Martin Chaojun Mei
  • Publication number: 20170269845
    Abstract: Embodiments of the present disclosure provide a device for data backup comprising: a secondary backup device coupled to a primary backup device, the secondary backup device further comprising data segmentation unit operable to divide target data to be backed up into a plurality of data segments; data fingerprint generation unit operable to generate a corresponding data fingerprint for each data segment from a plurality of data segments, and providing the data fingerprint to the primary backup device for backing up the target data at the primary backup device, wherein the data fingerprint is a mapped data segment of a length less than a corresponding data segment length.
    Type: Application
    Filed: March 15, 2017
    Publication date: September 21, 2017
    Inventors: Colin Yong Zou, Kun Wang, Sean Cheng Ye, Junping Frank Zhao, Man Lv