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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：US11144211B2
公开(公告)日：2021-10-12
申请号：US16682099
申请日：2019-11-13
Applicant: NetApp Inc.
Inventor： Akhil Kaushik , Ripulkumar Hemantbhai Patel , Vrishali Dattatray Hajare , Andrew Eric Dunn , Rithin Kumar Shetty
Abstract: One or more techniques and/or computing devices are provided for resynchronization. For example, a request may be received to create pseudo snapshots of a first consistency group, hosted by a first storage controller, and a second consistency group, hosted by a second storage controller, having a synchronous replication relationship with the first consistency group. Incoming client write requests are logged within an intercept tracking log at the first storage controller. After a first drain without hold of incoming write requests is performed, a first pseudo common snapshot of the second consistency group is created. After a second drain without hold of incoming write operations is performed, a second pseudo common snapshot of the first consistency group and the intercept tracking log is created. The pseudo snapshots and the intercept tracking log (e.g., indicating a delta between the pseudo snapshots) are used to resynchronize the first and second consistency groups.
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23.发明申请公开(公告)号：US20190332609A1
公开(公告)日：2019-10-31
申请号：US16504430
申请日：2019-07-08
Applicant: NetApp Inc.
Inventor： Rithin Kumar Shetty , Andrew Eric Dunn , Yi Yang
Abstract: One or more techniques and/or computing devices are provided for non-disruptively establishing a synchronous replication relationship between a primary volume and a secondary volume and/or for resynchronizing the primary volume and the secondary volume. For example, a baseline snapshot and one or more incremental snapshots of the primary volume are used to construct and incrementally update the secondary volume with data from the primary volume. A dirty region log is used to track modifications to the primary volume. A splitter object is used to split client write requests to the primary volume and to the secondary volume. A synchronous transfer engine session is initiated to processing incoming client write requests using the dirty region log. A cutover scanner is used to transfer dirty data from the primary volume to the secondary volume. In this way, a synchronous replication relationship is established between the primary volume and the secondary volume.
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公开(公告)号：US10353870B2
公开(公告)日：2019-07-16
申请号：US15045551
申请日：2016-02-17
Applicant: NetApp Inc.
Inventor： Rithin Kumar Shetty , Andrew Eric Dunn
IPC: G06F16/178
Abstract: One or more techniques and/or computing devices are provided for utilizing a tracking structure for data replication synchronization. For example, a first storage controller, hosting first storage, may have a replication relationship with a second storage controller hosting second storage (e.g., write requests, modifying the first storage, may be replicated to the second storage). The first storage controller maintains a tracking structure comprising hash buckets, dynamic tree structures, and/or a tracking segment bitmap used to identify portions of the first storage as either comprising dirty data (e.g., data, modified by a write request not yet replicated to the second storage, that may be different than corresponding data within the second storage) or clean data (e.g., the same data as the second storage). The tracking structure may be used to resynchronize the second storage to the first storage, perform a quick resync, facilitate semi-synchronous replication, and/or perform snapshot-less resync.
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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
26.发明申请公开(公告)号：US20180314748A1
公开(公告)日：2018-11-01
申请号：US16029755
申请日：2018-07-09
Applicant: NetApp Inc.
Inventor： Rithin Kumar Shetty , Andrew Eric Dunn , Yi Yang
CPC classification number: G06F16/275 , G06F3/0617 , G06F3/065 , G06F3/067 , G06F11/1451 , G06F16/214 , G06F16/273 , G06F2201/84 , H04L67/1095
Abstract: One or more techniques and/or computing devices are provided for non-disruptively establishing a synchronous replication relationship between a primary volume and a secondary volume and/or for resynchronizing the primary volume and the secondary volume. For example, a baseline snapshot and one or more incremental snapshots of the primary volume are used to construct and incrementally update the secondary volume with data from the primary volume. A dirty region log is used to track modifications to the primary volume. A splitter object is used to split client write requests to the primary volume and to the secondary volume. A synchronous transfer engine session is initiated to processing incoming client write requests using the dirty region log. A cutover scanner is used to transfer dirty data from the primary volume to the secondary volume. In this way, a synchronous replication relationship is established between the primary volume and the secondary volume.
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公开(公告)号：US20170185323A1
公开(公告)日：2017-06-29
申请号：US14980345
申请日：2015-12-28
Applicant: NetApp Inc.
Inventor： Akhil Kaushik , Ripulkumar Hemantbhai Patel , Vrishali Dattatray Hajare , Andrew Eric Dunn , Rithin Kumar Shetty
CPC classification number: G06F3/0619 , G06F3/065 , G06F3/0683 , G06F11/1451 , G06F11/1469 , G06F11/1471 , G06F11/2064 , G06F11/2076 , G06F11/2082 , G06F2201/805 , G06F2201/84
Abstract: One or more techniques and/or computing devices are provided for resynchronization. For example, a request may be received to create pseudo snapshots of a first consistency group, hosted by a first storage controller, and a second consistency group, hosted by a second storage controller, having a synchronous replication relationship with the first consistency group. Incoming client write requests are logged within an intercept tracking log at the first storage controller. After a first drain without hold of incoming write requests is performed, a first pseudo common snapshot of the second consistency group is created. After a second drain without hold of incoming write operations is performed, a second pseudo common snapshot of the first consistency group and the intercept tracking log is created. The pseudo snapshots and the intercept tracking log (e.g., indicating a delta between the pseudo snapshots) are used to resynchronize the first and second consistency groups.
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公开(公告)号：US11860898B2
公开(公告)日：2024-01-02
申请号：US17866594
申请日：2022-07-18
Applicant: NetApp Inc.
Inventor： Rithin Kumar Shetty , Andrew Eric Dunn , Yi Yang
CPC classification number: G06F16/275 , G06F3/065 , G06F3/067 , G06F3/0617 , G06F11/1451 , G06F16/214 , G06F16/273 , H04L67/1095 , G06F2201/84
Abstract: One or more techniques and/or computing devices are provided for non-disruptively establishing a synchronous replication relationship between a primary volume and a secondary volume and/or for resynchronizing the primary volume and the secondary volume. For example, a baseline snapshot and one or more incremental snapshots of the primary volume are used to construct and incrementally update the secondary volume with data from the primary volume. A dirty region log is used to track modifications to the primary volume. A splitter object is used to split client write requests to the primary volume and to the secondary volume. A synchronous transfer engine session is initiated to processing incoming client write requests using the dirty region log. A cutover scanner is used to transfer dirty data from the primary volume to the secondary volume. In this way, a synchronous replication relationship is established between the primary volume and the secondary volume.
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公开(公告)号：US20230289069A1
公开(公告)日：2023-09-14
申请号：US18160371
申请日：2023-01-27
Applicant: NetApp Inc.
Inventor： Akhil Kaushik , Ripulkumar Hemantbhai Patel , Vrishali Dattatray Hajare , Andrew Eric Dunn , Rithin Kumar Shetty
CPC classification number: G06F3/0619 , G06F11/1469 , G06F11/1451 , G06F3/0683 , G06F3/065 , G06F11/20 , G06F2201/84 , G06F2201/805
Abstract: One or more techniques and/or computing devices are provided for resynchronization. For example, a request may be received to create pseudo snapshots of a first consistency group, hosted by a first storage controller, and a second consistency group, hosted by a second storage controller, having a synchronous replication relationship with the first consistency group. Incoming client write requests are logged within an intercept tracking log at the first storage controller. After a first drain without hold of incoming write requests is performed, a first pseudo common snapshot of the second consistency group is created. After a second drain without hold of incoming write operations is performed, a second pseudo common snapshot of the first consistency group and the intercept tracking log is created. The pseudo snapshots and the intercept tracking log (e.g., indicating a delta between the pseudo snapshots) are used to resynchronize the first and second consistency groups.
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公开(公告)号：US20230012563A1
公开(公告)日：2023-01-19
申请号：US17947389
申请日：2022-09-19
Applicant: NetApp Inc.
Inventor： Pranab Patnaik , Nagender Somavarapu , Yuedong Mu , Rithin Kumar Shetty , Devang Kundanial Shah
Abstract: One or more techniques and/or computing devices are provided for moving a consistency group having a replication relation. For example, a first consistency group of storage objects (e.g., files, logical unit numbers (LUNs), etc.) within first storage may have a replication relationship with a second consistency group within second storage (e.g., the second consistency group is maintained as a synchronously replicated copy of the first consistency group). A volume copy operation, a single file move on demand command, a single file restore command, or other functionality is used to move the first consistency group from the first storage to third storage, such as for load balancing, to create a moved first consistency group within the third storage. A new replication relationship is established between the moved first consistency group and the second consistency group, and the moved first consistency group and the second consistency group are resynchronized.
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