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公开(公告)号：US20230259528A1
公开(公告)日：2023-08-17
申请号：US18094533
申请日：2023-01-09
Applicant: NetApp Inc.
Inventor： Yuedong Mu , Ching-Yuk Paul Ngan , Manoj V. Sundararajan
IPC: G06F16/27 , H04L67/1095 , H04L47/70 , H04L67/1074 , H04L67/568
CPC classification number: G06F16/275 , H04L67/1095 , H04L47/828 , H04L67/1078 , H04L67/568 , G06F16/27 , G06F11/20
Abstract: Synchronization metadata is read from non-volatile storage. The synchronization metadata comprises indications of one or more synchronization targets. A synchronization target is a node of a clustered storage system. A synchronization cache is populated with the synchronization metadata. After populating the synchronization cache with at least a portion of the synchronization metadata, a connection to a network is established. After the connection to the network is established, a connection to a first of the one or more synchronization targets is established.
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公开(公告)号：US11341101B2
公开(公告)日：2022-05-24
申请号：US16868671
申请日：2020-05-07
Applicant: NetApp Inc.
Inventor： Ching-Yuk Paul Ngan , Kanwaldeep Singh , Yuedong Mu , Manoj Kumar V Sundararajan
IPC: G06F16/00 , G06F16/178 , G06F11/14 , G06F11/20
Abstract: One or more techniques and/or computing devices are provided for data synchronization. For example, an in-flight log may be maintained to track storage operations that are received by a first storage node, but have not been committed to both first storage of the first storage node and second storage of a second storage node that has a replication relationship, such as a disaster recovery relationship, with the first storage node. A dirty region log may be maintained to track regions within the first storage that have been modified by storage operations that have not been replicated to the second storage. Accordingly, a catchup synchronization phase (e.g., asynchronous replication by a resync scanner) may be performed to replicate storage operations (e.g., replicate data within dirty regions of the first storage that were modified by such storage operations) to the second storage until the first storage and the second storage are synchronized.
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公开(公告)号：US11163729B2
公开(公告)日：2021-11-02
申请号：US16456775
申请日：2019-06-28
Applicant: NetApp Inc.
Inventor： Rithin Kumar Shetty , Akhil Kaushik , Nagender Somavarapu , Yuedong Mu , Pranab Patnaik
IPC: G06F16/178 , G06F16/188 , G06F11/14 , G06F11/20 , G06F9/455 , H04L29/08
Abstract: One or more techniques and/or computing devices are provided for replicating virtual machine disk clones. For example, a first storage controller, hosting first storage, may have a synchronous replication relationship with a second storage controller hosting second storage. A virtual machine, within the first storage, may be specified as having synchronous replication protection. Accordingly, virtual machine disk clones of a virtual machine disk of the virtual machine may be replicated from the first storage to the second storage. For example, virtual machine disk clones may be synchronous replicated, replicated by a resync process invoked by a hypervisor agent, and/or stored and replicated from a clone backup directory.
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公开(公告)号：US10452489B2
公开(公告)日：2019-10-22
申请号：US15658112
申请日：2017-07-24
Applicant: NetApp, Inc.
Inventor： Yuedong Mu , Manoj V. Sundararajan , Ching-Yuk Paul Ngan
Abstract: A distributed storage system replicates data for a primary logical storage object on a primary node of the storage system to a secondary logical storage object on a secondary node on the distributed storage system. Failures in writing data to the primary logical storage object or failures in the replication of the data to the secondary logical storage object can cause data that should be synchronized to become divergent. In cases where the data may be divergent, reconciliation operations can be performed to resynchronize the data.
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公开(公告)号：US10339111B2
公开(公告)日：2019-07-02
申请号：US15141988
申请日：2016-04-29
Applicant: NetApp Inc.
Inventor： Rithin Kumar Shetty , Akhil Kaushik , Nagender Somavarapu , Yuedong Mu , Pranab Patnaik
IPC: G06F16/178 , G06F16/188 , G06F9/455 , G06F11/14 , H04L29/08 , G06F11/20
Abstract: One or more techniques and/or computing devices are provided for replicating virtual machine disk clones. For example, a first storage controller, hosting first storage, may have a synchronous replication relationship with a second storage controller hosting second storage. A virtual machine, within the first storage, may be specified as having synchronous replication protection. Accordingly, virtual machine disk clones of a virtual machine disk of the virtual machine may be replicated from the first storage to the second storage. For example, virtual machine disk clones may be synchronous replicated, replicated by a resync process invoked by a hypervisor agent, and/or stored and replicated from a clone backup directory.
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Patent Agency Ranking
公开(公告)号：US20190052709A1
公开(公告)日：2019-02-14
申请号：US16162850
申请日：2018-10-17
Applicant: NetApp Inc.
Inventor： Yuedong Mu , Ching-Yuk P. Ngan , Manoj V. Sundararajan
IPC: H04L29/08
Abstract: A request to perform a coordinated action is received. The coordinated action comprises a first plurality of operations. In response to reception of the request to perform the coordinated action, a second plurality of operations is performed in preparation for performing the coordinated action. A response to the request to perform the coordinated action is sent. The response to the request to perform the coordinated action comprises an indication that the first device will perform the coordinated action. An indication that the coordinated action is to be performed is received. In response to reception of the indication that the coordinated action is to be performed, the first plurality of operations is performed.
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公开(公告)号：US20180217771A1
公开(公告)日：2018-08-02
申请号：US15933556
申请日：2018-03-23
Applicant: NetApp Inc.
Inventor： Manoj V. Sundararajan , Ching-Yuk Paul Ngan , Yuedong Mu , Susan M. Coatney
IPC: G06F3/06
CPC classification number: G06F3/0619 , G06F3/065 , G06F3/067
Abstract: A primary write request that is to modify a primary portion of primary data stored in a primary storage node is received. The primary write request is to be replicated to create a current secondary write request. The current secondary write request is to modify a current secondary portion of secondary data that is stored in a secondary storage node. A current data range of the current secondary portion is determined. A determination is made of whether a previous secondary write request is in process of modifying a previous data range that at least partially overlaps with a current data range of the current secondary portion. Execution of the primary write request is suspended, until the previous secondary write request has completed updating the secondary storage node.
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公开(公告)号：US20170185306A1
公开(公告)日：2017-06-29
申请号：US14980526
申请日：2015-12-28
Applicant: NetApp Inc.
Inventor： Michael Robin Eisler , Santosh Ananth Rao , Akhil Kaushik , Yuedong Mu
CPC classification number: G06F3/065 , G06F3/0619 , G06F3/067 , G06F11/2058 , G06F11/2064 , G06F11/2069 , G06F11/2076 , G06F11/2082
Abstract: One or more techniques and/or computing devices are provided for synchronous replication. For example, synchronous replication relationships are established between a first storage object (e.g., a file, a logical unit number (LUN), a consistency group, etc.), hosted by a first storage controller, and a plurality of replication storage objects hosted by other storage controllers. In this way, a write operation to the first storage object is implemented in parallel upon the first storage object and the replication storage objects in a synchronous manner, such as using a zero-copy operation to reduce overhead otherwise introduced by performing copy operations. Reconciliation is performed in response to a failure so that the first storage object and the replication storage objects comprise consistent data. Failed write operations and replication write operations are retried, while enforcing a single write semantic. Dependent write order consistency is enforced for dependent write operations, such as overlapping write operations.
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公开(公告)号：US09571575B2
公开(公告)日：2017-02-14
申请号：US14473621
申请日：2014-08-29
Applicant: NetApp, Inc.
Inventor： Jeffrey S. Kimmel , Susan M. Coatney , Yuedong Mu , Santosh Rao
CPC classification number: H04L67/1095 , G06F3/0619 , G06F3/065 , G06F3/067 , G06F17/30215 , H04L67/1097
Abstract: Data consistency and availability can be provided at the granularity of logical storage objects in storage solutions that use storage virtualization in clustered storage environments. To ensure consistency of data across different storage elements, synchronization is performed across the different storage elements. Changes to data are synchronized across storage elements in different clusters by propagating the changes from a primary logical storage object to a secondary logical storage object. To satisfy the strictest RPOs while maintaining performance, change requests are intercepted prior to being sent to a filesystem that hosts the primary logical storage object and propagated to a different managing storage element associated with the secondary logical storage object.
Abstract translation: 可以在集群存储环境中使用存储虚拟化的存储解决方案中的逻辑存储对象的粒度提供数据一致性和可用性。 为了确保不同存储元件之间的数据的一致性，跨不同存储元件执行同步。 通过将更改从主逻辑存储对象传播到辅助逻辑存储对象，对数据的更改在不同群集中的存储元素之间进行同步。 为了在维护性能的同时满足最严格的RPO，在发送到托管主逻辑存储对象的文件系统之前，更改请求将被拦截，并传播到与辅助逻辑存储对象关联的其他管理存储元素。
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公开(公告)号：US20160063083A1
公开(公告)日：2016-03-03
申请号：US14473081
申请日：2014-08-29
Applicant: NetApp, Inc.
Inventor： Yuedong Mu , Ching-Yuk Paul Ngan , Manoj V. Sundararajan
IPC: G06F17/30 , H04L29/08 , H04L12/911 , G06F11/14
CPC classification number: G06F16/275 , G06F11/20 , G06F11/2094 , G06F16/27 , G06F2201/82 , H04L29/08 , H04L47/828 , H04L67/1078 , H04L67/1095 , H04L67/2842
Abstract: Synchronization metadata is read from non-volatile storage. The synchronization metadata comprises indications of one or more synchronization targets. A synchronization target is a node of a clustered storage system. A synchronization cache is populated with the synchronization metadata. After populating the synchronization cache with at least a portion of the synchronization metadata, a connection to a network is established. After the connection to the network is established, a connection to a first of the one or more synchronization targets is established.
Abstract translation: 从非易失性存储器读取同步元数据。 同步元数据包括一个或多个同步目标的指示。 同步目标是群集存储系统的节点。 使用同步元数据填充同步缓存。 在使用同步元数据的至少一部分填充同步缓存之后，建立到网络的连接。 在建立到网络的连接之后，建立到一个或多个同步目标中的第一个的连接。
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