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公开(公告)号：US20230350758A1
公开(公告)日：2023-11-02
申请号：US17730899
申请日：2022-04-27
Applicant: NetApp Inc
Inventor： Rakesh Bhargava M.R. , Murali Subramanian , Tijin George , Ching-Yuk Paul Ngan
IPC: G06F11/14
CPC classification number: G06F11/1448 , G06F2201/84
Abstract: Techniques are provided for volume group backup, volume group restore, and volume group garbage collection for volume groups backed up to an object store. A volume group workflow is implemented to orchestrate individual consistent volume workflows that are separately and individually implemented by nodes hosting constituent volumes of a volume group. The volume group workflow and the individual consistent volume workflows are performed to back up the volume group to the object store, restore a volume group backup from the object store to a restore destination, and/or perform garbage collection on slots of objects storing data unique to a volume group backup to delete.
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公开(公告)号：US20220124149A1
公开(公告)日：2022-04-21
申请号：US17567182
申请日：2022-01-03
Applicant: NetApp Inc.
Inventor： Paul Anthony Powell , Akhil Kaushik , Srikumar Natarajan , Ching-Yuk Paul Ngan
IPC: H04L67/1095 , G06F16/178 , G06F16/182 , G06F3/06 , G06F11/20 , H04L67/1097
Abstract: One or more techniques and/or computing devices are provided for implementing synchronous replication. For example, a synchronous replication relationship may be established between a first storage controller hosting local storage and a second storage controller hosting remote storage (e.g., replication may be specified at a file, logical unit number (LUN), or any other level of granularity). Data operations and offloaded operations may be implemented in parallel upon the local storage and the remote storage. Error handling operations may be implemented upon the local storage and implement in parallel as a best effort on the remote storage, and a reconciliation may be performed to identify any data divergence from the best effort parallel implementation. Storage area network (SAN) operations may be implemented upon the local storage, and upon local completion may be remotely implemented upon the remote storage.
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公开(公告)号：US20210191823A1
公开(公告)日：2021-06-24
申请号：US17194531
申请日：2021-03-08
Applicant: NetApp Inc.
Inventor： Vrishali Dattatray Hajare , Ripulkumar Hemantbhai Patel , Ching-Yuk Paul Ngan , Rithin Kumar Shetty
Abstract: One or more techniques and/or computing devices are provided for snapshot creation. For example, a request may be received to create a snapshot of a first storage object, hosted by a first storage controller, having a synchronous replication relationship with a second storage object hosted by a second storage controller. A coordinator workflow is initialized to issue a drain and hold request to a splitter. Responsive to an indication that the splitter has stopped processing and started queuing incoming write operations and has drained current write operations based upon the drain and hold request, snapshot creation requests are sent to the first storage controller and the second storage controller. Responsive to the first storage controller creating a first snapshot of the first storage object and the second storage controller creating a second snapshot of the second storage object, the splitter may be resumed to process write operations.
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公开(公告)号：US20200265018A1
公开(公告)日：2020-08-20
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: G06F16/178 , G06F11/20 , G06F11/14
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：US20200081902A1
公开(公告)日：2020-03-12
申请号：US16682007
申请日：2019-11-13
Applicant: NetApp Inc.
Inventor： Yuedong Mu , Ching-Yuk Paul Ngan , Manoj V. Sundararajan
IPC: G06F16/27 , H04L29/08 , H04L12/911
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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Patent Agency Ranking
公开(公告)号：US20180139279A1
公开(公告)日：2018-05-17
申请号：US15850754
申请日：2017-12-21
Applicant: NetApp Inc.
Inventor： Paul Anthony Powell , Akhil Kaushik , Srikumar Natarajan , Ching-Yuk Paul Ngan
Abstract: One or more techniques and/or computing devices are provided for implementing synchronous replication. For example, a synchronous replication relationship may be established between a first storage controller hosting local storage and a second storage controller hosting remote storage (e.g., replication may be specified at a file, logical unit number (LUN), or any other level of granularity). Data operations and offloaded operations may be implemented in parallel upon the local storage and the remote storage. Error handling operations may be implemented upon the local storage and implement in parallel as a best effort on the remote storage, and a reconciliation may be performed to identify any data divergence from the best effort parallel implementation. Storage area network (SAN) operations may be implemented upon the local storage, and upon local completion may be remotely implemented upon the remote storage.
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公开(公告)号：US20170155713A1
公开(公告)日：2017-06-01
申请号：US14953048
申请日：2015-11-27
Applicant: NetApp Inc.
Inventor： Paul Anthony Powell , Akhil Kaushik , Srikumar Natarajan , Ching-Yuk Paul Ngan
CPC classification number: H04L67/1095 , G06F3/0614 , G06F3/065 , G06F3/067 , G06F11/2064 , G06F11/2069 , G06F17/30174 , G06F17/30215 , G06F2201/805 , H04L67/1097
Abstract: One or more techniques and/or computing devices are provided for implementing synchronous replication. For example, a synchronous replication relationship may be established between a first storage controller hosting local storage and a second storage controller hosting remote storage (e.g., replication may be specified at a file, logical unit number (LUN), or any other level of granularity). Data operations and offloaded operations may be implemented in parallel upon the local storage and the remote storage. Error handling operations may be implemented upon the local storage and implement in parallel as a best effort on the remote storage, and a reconciliation may be performed to identify any data divergence from the best effort parallel implementation. Storage area network (SAN) operations may be implemented upon the local storage, and upon local completion may be remotely implemented upon the remote storage.
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公开(公告)号：US09645753B2
公开(公告)日：2017-05-09
申请号：US14472782
申请日：2014-08-29
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：US20160062836A1
公开(公告)日：2016-03-03
申请号：US14472885
申请日：2014-08-29
Applicant: NetApp, Inc.
Inventor： Yuedong Mu , Manoj V. Sundararajan , Ching-Yuk Paul Ngan
CPC classification number: G06F11/1451 , G06F11/00 , G06F11/1658 , G06F11/2058 , G06F11/2069 , G06F2201/84
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.
Abstract translation: 分布式存储系统将存储系统的主节点上的主逻辑存储对象的数据复制到分布式存储系统上的辅助节点上的辅助逻辑存储对象。 将数据写入主逻辑存储对象或将数据复制到辅助逻辑存储对象中的故障可能导致应同步的数据变得分歧。 在数据可能不一致的情况下，可以执行协调操作以重新同步数据。
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公开(公告)号：US12229010B2
公开(公告)日：2025-02-18
申请号：US17730899
申请日：2022-04-27
Applicant: NetApp Inc.
Inventor： Rakesh Bhargava M. R. , Murali Subramanian , Tijin George , Ching-Yuk Paul Ngan
IPC: G06F11/14
Abstract: Techniques are provided for volume group backup, volume group restore, and volume group garbage collection for volume groups backed up to an object store. A volume group workflow is implemented to orchestrate individual consistent volume workflows that are separately and individually implemented by nodes hosting constituent volumes of a volume group. The volume group workflow and the individual consistent volume workflows are performed to back up the volume group to the object store, restore a volume group backup from the object store to a restore destination, and/or perform garbage collection on slots of objects storing data unique to a volume group backup to delete.
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