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    TECHNIQUES FOR CONTROLLING CLIENT TRAFFIC ON A CLUSTERED SYSTEM
    11.
    发明申请
    TECHNIQUES FOR CONTROLLING CLIENT TRAFFIC ON A CLUSTERED SYSTEM 审中-公开
    控制集群系统客户端流量的技术

    公开(公告)号：US20160127462A1

    公开(公告)日：2016-05-05

    申请号：US14526760

    申请日：2014-10-29

    Applicant: NETAPP, INC.

    Inventor： Paul Yuedong Mu ,  Desai Rajesh ,  Abhishek Naidu

    IPC: H04L29/08

    CPC classification number: H04L67/1095 ,  H04L67/1097

    Abstract: Various embodiments are generally directed an apparatus and method to receive client traffic comprising information at a primary cluster of a clustered system over a communications link, perform, a replication operation on the clustered system to replicate the information on a secondary cluster of the clustered system, and determine a client traffic throughput for the client traffic and a replication throughput for the replication operation. In some embodiments, the apparatus and method may include buffering one or more write operations to control the client traffic such that the client traffic throughput is less than or equal to the replication throughput for the replication operation.

    Abstract translation: 各种实施例通常涉及一种装置和方法，用于通过通信链路在集群系统的主集群处接收包括信息的客户端业务，执行集群系统上的复制操作以在集群系统的辅助集群上复制信息， 并确定客户端流量的客户端流量吞吐量和复制操作的复制吞吐量。 在一些实施例中，装置和方法可以包括缓冲一个或多个写入操作以控制客户端流量，使得客户端流量吞吐量小于或等于复制操作的复制吞吐量。

    Servicing of network software components of nodes of a cluster storage system
    13.
    发明授权
    Servicing of network software components of nodes of a cluster storage system 有权

    公开(公告)号：US11546337B2

    公开(公告)日：2023-01-03

    申请号：US16448063

    申请日：2019-06-21

    Applicant: NetApp Inc.

    Inventor： Nam Le ,  Paul Yuedong Mu ,  John Russell Boyles ,  John Eric Hoffman

    IPC: G06F15/16 ,  H04L9/40 ,  H04L67/1097 ,  H04L67/10 ,  G06F16/10 ,  G06F3/06 ,  G06F11/20 ,  G06F12/14 ,  G06F21/62

    Abstract: Described herein are method and apparatus for servicing software components of nodes of a cluster storage system. During data-access sessions with clients, client IDs and file handles for accessing files are produced and stored to clients and stored (as session data) to each node. A serviced node is taken offline, whereby network connections to clients are disconnected. Each disconnected client is configured to retain its client ID and file handles and attempt reconnections. Session data of the serviced node is made available to a partner node (by transferring session data to the partner node). After clients have reconnected to the partner node, the clients may use the retained client IDs and file handles to continue a data-access session with the partner node since the partner node has access to the session data of the serviced node and thus will recognize and accept the retained client ID and file handles.

    Techniques for maintaining communications sessions among nodes in a storage cluster system
    15.
    发明授权
    Techniques for maintaining communications sessions among nodes in a storage cluster system 有权

    公开(公告)号：US11016866B2

    公开(公告)日：2021-05-25

    申请号：US16716391

    申请日：2019-12-16

    Applicant: NetApp Inc.

    Inventor： Paul Yuedong Mu ,  Manoj Sundararajan ,  Paul Ngan

    IPC: G06F11/00 ,  G06F11/20 ,  G06F11/14

    Abstract: Various embodiments are generally directed to techniques for preparing to respond to failures in performing a data access command to modify client device data in a storage cluster system. An apparatus may include a processor component of a first node coupled to a first storage device; an access component to perform a command on the first storage device; a replication component to exchange a replica of the command with the second node via a communications session formed between the first and second nodes to enable at least a partially parallel performance of the command by the first and second nodes; and a multipath component to change a state of the communications session from inactive to active to enable the exchange of the replica based on an indication of a failure within a third node that precludes performance of the command by the third node. Other embodiments are described and claimed.

    TECHNIQUES FOR STORING AND DISTRIBUTING METADATA AMONG NODES IN A STORAGE CLUSTER SYSTEM
    16.
    发明申请
    TECHNIQUES FOR STORING AND DISTRIBUTING METADATA AMONG NODES IN A STORAGE CLUSTER SYSTEM 审中-公开

    公开(公告)号：US20200162552A1

    公开(公告)日：2020-05-21

    申请号：US16751891

    申请日：2020-01-24

    Applicant: NetApp Inc.

    Inventor： Paul Yuedong Mu ,  Manoj Sundararajan ,  Paul Ngan

    IPC: H04L29/08

    Abstract: Various embodiments are generally directed to techniques for reducing the time required for a node to take over for a failed node or to boot. An apparatus includes an access component to retrieve a metadata from a storage device coupled to a first D-module of a first node during boot, the metadata generated from a first mutable metadata portion and an immutable metadata portion, and the first metadata specifying a first address of a second D-module of a second node; a replication component to contact the second data storage module at the first address; and a generation component to, in response to failure of the contact, request a second mutable metadata portion from a N-module of the first node and generate a second metadata from the second mutable metadata portion and the immutable metadata portion, the second mutable metadata portion specifying a second address of the second D-module.

    Techniques for performing resynchronization of a clustered system
    17.
    发明授权
    Techniques for performing resynchronization of a clustered system 有权

    公开(公告)号：US10379919B2

    公开(公告)日：2019-08-13

    申请号：US15661070

    申请日：2017-07-27

    Applicant: NetApp Inc.

    Inventor： Paul Yuedong Mu ,  Paul Ngan ,  Manoj Sundararajan

    IPC: G06F17/30 ,  G06F11/00 ,  G06F11/20

    Abstract: Various embodiments are generally directed an apparatus and method for receiving information to write on a clustered system comprising at least a first cluster and a second cluster, determining that a failure event has occurred on the clustered system creating unsynchronized information, the unsynchronized information comprising at least one of inflight information and dirty region information, and performing a resynchronization operation to synchronize the unsynchronized information on the first cluster and the second cluster based on log information in at least one of an inflight tracker log for the inflight information and a dirty region log for the dirty region information.

    SERVICING OF STORAGE DEVICE SOFTWARE COMPONENTS OF NODES OF A CLUSTER STORAGE SYSTEM
    18.
    发明申请
    SERVICING OF STORAGE DEVICE SOFTWARE COMPONENTS OF NODES OF A CLUSTER STORAGE SYSTEM 审中-公开

    公开(公告)号：US20180167466A1

    公开(公告)日：2018-06-14

    申请号：US15879727

    申请日：2018-01-25

    Applicant: NetApp Inc.

    Inventor： Paul Yuedong Mu ,  Nam Le ,  John Hoffmann ,  John Boyles

    IPC: H04L29/08 ,  H04L29/06

    CPC classification number: H04L67/146 ,  H04L63/08 ,  H04L63/10 ,  H04L67/10 ,  H04L67/1097 ,  H04L67/143

    Abstract: Described herein are method and apparatus for servicing software components of nodes of a cluster storage system. During data-access sessions with clients, client IDs and file handles for accessing files are produced and stored to clients and stored (as session data) to each node. A serviced node is taken offline, whereby network connections to clients are disconnected. Each disconnected client is configured to retain its client ID and file handles and attempt reconnections. Session data of the serviced node is made available to a partner node (by transferring session data to the partner node). After clients have reconnected to the partner node, the clients may use the retained client IDs and file handles to continue a data-access session with the partner node since the partner node has access to the session data of the serviced node and thus will recognize and accept the retained client ID and file handles.

    TECHNIQUES FOR PERFORMING RESYNCHRONIZATION ON A CLUSTERED SYSTEM
    19.
    发明申请
    TECHNIQUES FOR PERFORMING RESYNCHRONIZATION ON A CLUSTERED SYSTEM 审中-公开

    公开(公告)号：US20170322837A1

    公开(公告)日：2017-11-09

    申请号：US15661070

    申请日：2017-07-27

    Applicant: NetApp Inc.

    Inventor： Paul Yuedong Mu ,  Paul Ngan ,  Manoj Sundararajan

    IPC: G06F11/00

    CPC classification number: G06F11/006 ,  G06F11/00 ,  G06F11/2038 ,  G06F11/2048 ,  G06F11/2097 ,  G06F2201/80

    Abstract: Various embodiments are generally directed an apparatus and method for receiving information to write on a clustered system comprising at least a first cluster and a second cluster, determining that a failure event has occurred on the clustered system creating unsynchronized information, the unsynchronized information comprising at least one of inflight information and dirty region information, and performing a resynchronization operation to synchronize the unsynchronized information on the first cluster and the second cluster based on log information in at least one of an inflight tracker log for the inflight information and a dirty region log for the dirty region information.

    Techniques for error handling in parallel splitting of storage commands
    20.
    发明授权
    Techniques for error handling in parallel splitting of storage commands 有权
    存储命令并行拆分中的错误处理技术

    公开(公告)号：US09489275B2

    公开(公告)日：2016-11-08

    申请号：US14504618

    申请日：2014-10-02

    Applicant: NETAPP, INC.

    Inventor： Paul Yuedong Mu ,  Paul Ngan ,  Manoj Sundararajan

    IPC: G06F11/00 ,  G06F11/20 ,  G06F3/06 ,  H04L1/08 ,  G06F11/07

    CPC classification number: H04L1/08 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0689 ,  G06F11/07 ,  G06F11/2069 ,  G06F11/2094 ,  G06F2201/805 ,  G06F2201/82 ,  G06F2201/85

    Abstract: Various embodiments are generally directed to techniques for handling errors affecting the at least partially parallel performance of data access commands between nodes of a storage cluster system. An apparatus may include a processor component of a first node, an access component to perform a command received from a client device via a network to alter client device data stored in a first storage device coupled to the first node, a replication component to transmit a replica of the command to a second node via the network to enable performance of the replica by the second node at least partially in parallel, an error component to retry transmission of the replica based on a failure indicated by the second node and a status component to select a status indication to transmit to the client device based on the indication of failure and results of retrial of transmission of the replica.

    Abstract translation: 各种实施例通常涉及用于处理影响存储集群系统的节点之间的数据访问命令的至少部分并行性能的错误的技术。 装置可以包括第一节点的处理器组件，访问组件，用于执行从客户端设备经由网络接收的命令，以改变存储在耦合到第一节点的第一存储设备中的客户机设备数据，复制组件，用于发送 经由网络将命令的副本复制到第二节点以使得第二节点至少部分地并行地执行副本的性能;错误组件，用于基于由第二节点指示的故障和状态组件来重试发送副本; 根据失败的指示和复制传输的重试结果，选择要发送给客户端设备的状态指示。

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