公开(公告)号：US11449373B2

公开(公告)日：2022-09-20

申请号：US16459982

申请日：2019-07-02

Applicant: NetApp Inc.

Inventor： Paul Yuedong Mu ,  Paul Ngan ,  Manoj Sundararajan

IPC: G06F16/00 ,  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.

公开(公告)号：US10554754B2

公开(公告)日：2020-02-04

申请号：US15820678

申请日：2017-11-22

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.

公开(公告)号：US20180107571A1

公开(公告)日：2018-04-19

申请号：US15820717

申请日：2017-11-22

Applicant: NetApp Inc.

Inventor： Paul Yuedong Mu ,  Manoj Sundararajan ,  Paul Ngan

IPC: G06F11/20 ,  G06F11/14

CPC classification number: G06F11/2092 ,  G06F11/1443 ,  G06F11/2005 ,  G06F11/2071 ,  G06F11/2097

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.

公开(公告)号：US20180097882A1

公开(公告)日：2018-04-05

申请号：US15820678

申请日：2017-11-22

Applicant: NetApp Inc.

Inventor： Paul Yuedong Mu ,  Manoj Sundararajan ,  Paul Ngan

IPC: H04L29/08

CPC classification number: H04L67/1097

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.

公开(公告)号：US09838477B2

公开(公告)日：2017-12-05

申请号：US14528166

申请日：2014-10-30

Applicant: NETAPP, INC.

Inventor： Paul Yuedong Mu ,  Manoj Sundararajan ,  Paul Ngan

IPC: G06F15/167 ,  H04L29/08

CPC classification number: H04L67/1097

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 data storage 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 data storage 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 network protocol 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 data storage module.

公开(公告)号：US20160110378A1

公开(公告)日：2016-04-21

申请号：US14518422

申请日：2014-10-20

Applicant: NETAPP, INC.

Inventor： Paul Yuedong Mu ,  Paul Ngan ,  Manoj Sundararajan

IPC: G06F17/30 ,  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.

Abstract translation: 各种实施例通常涉及用于接收在包括至少第一集群和第二集群的集群系统上写入的信息的装置和方法，确定在集群系统上发生故障事件以创建不同步的信息，所述非同步信息至少包括 飞行信息和脏区域信息之一，以及基于用于飞行信息的飞行时间跟踪器日志和用于飞行时间信息的肮脏区域日志中的至少一个中的日志信息来执行重新同步操作以使第一群集和第二群集上的非同步信息同步 脏区信息。

公开(公告)号：US20160062856A1

公开(公告)日：2016-03-03

申请号：US14473779

申请日：2014-08-29

Applicant: NETAPP, INC.

Inventor： Paul Yuedong Mu ,  Manoj Sundararajan ,  Paul Ngan

IPC: G06F11/20 ,  G06F11/14

CPC classification number: G06F11/2092 ,  G06F11/1443 ,  G06F11/2005 ,  G06F11/2071 ,  G06F11/2097

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.

Abstract translation: 各种实施例通常涉及用于准备响应执行数据访问命令以在存储集群系统中修改客户端设备数据的故障的技术。 设备可以包括耦合到第一存储设备的第一节点的处理器组件; 访问组件，用于在所述第一存储设备上执行命令; 复制部件，用于经由形成在所述第一和第二节点之间的通信会话与所述第二节点交换所述命令的副本，以使得能够由所述第一和第二节点至少部分地并行地执行所述命令; 以及多路径部件，用于将通信会话的状态从非活动状态改变为活动状态，以基于第三节点内的故障的指示来执行副本的交换，从而阻止第三节点执行命令。 描述和要求保护其他实施例。

公开(公告)号：US11973829B2

公开(公告)日：2024-04-30

申请号：US17989102

申请日：2022-11-17

Applicant: NetApp Inc.

Inventor： Manoj Sundararajan ,  Paul Yuedong Mu ,  Paul Ngan

IPC: H04L29/08 ,  G06F11/20 ,  H04L29/06 ,  H04L67/1095 ,  H04L67/1097 ,  H04L69/22

CPC classification number: H04L67/1097 ,  G06F11/2071 ,  G06F11/2089 ,  H04L67/1095 ,  H04L69/22 ,  G06F11/2092 ,  G06F11/2097

Abstract: Various embodiments are directed to techniques for coordinating at least partially parallel performance and cancellation of data access commands between nodes of a storage cluster system. An apparatus may include a processor component of a first node coupled to a first storage device storing client device data; an access component to perform replica data access commands of replica command sets on the client device data, each replica command set assigned a set ID; a communications component to analyze a set ID included in a network packet to determine whether a portion of a replica command set in the network packet is redundant, and to reassemble the replica command set from the portion based if the portion is not redundant; and an ordering component to provide the communications component with set IDs of replica command sets of which the access component has fully performed the set of replica data access commands.

公开(公告)号：US20230079868A1

公开(公告)日：2023-03-16

申请号：US17989102

申请日：2022-11-17

Applicant: NetApp Inc.

Inventor： Manoj Sundararajan ,  Paul Yuedong Mu ,  Paul Ngan

IPC: H04L67/1097 ,  H04L69/22 ,  H04L67/1095 ,  G06F11/20

Abstract: Various embodiments are directed to techniques for coordinating at least partially parallel performance and cancellation of data access commands between nodes of a storage cluster system. An apparatus may include a processor component of a first node coupled to a first storage device storing client device data; an access component to perform replica data access commands of replica command sets on the client device data, each replica command set assigned a set ID; a communications component to analyze a set ID included in a network packet to determine whether a portion of a replica command set in the network packet is redundant, and to reassemble the replica command set from the portion based if the portion is not redundant; and an ordering component to provide the communications component with set IDs of replica command sets of which the access component has fully performed the set of replica data access commands.

公开(公告)号：US11509718B2

公开(公告)日：2022-11-22

申请号：US16774108

申请日：2020-01-28

Applicant: NetApp Inc.

Inventor： Manoj Sundararajan ,  Paul Yuedong Mu ,  Paul Ngan

IPC: H04L29/08 ,  H04L29/06 ,  G06F11/20 ,  H04L67/1097 ,  H04L69/22 ,  H04L67/1095

Abstract: Various embodiments are directed to techniques for coordinating at least partially parallel performance and cancellation of data access commands between nodes of a storage cluster system. An apparatus may include a processor component of a first node coupled to a first storage device storing client device data; an access component to perform replica data access commands of replica command sets on the client device data, each replica command set assigned a set ID; a communications component to analyze a set ID included in a network packet to determine whether a portion of a replica command set in the network packet is redundant, and to reassemble the replica command set from the portion based if the portion is not redundant; and an ordering component to provide the communications component with set IDs of replica command sets of which the access component has fully performed the set of replica data access commands.