公开(公告)号：US11709743B2

公开(公告)日：2023-07-25

申请号：US17219815

申请日：2021-03-31

Applicant: NetApp, Inc.

Inventor： Rakesh Bhargava ,  Akhil Kaushik ,  Divya Kathiresan ,  Mukul Verma

IPC: G06F11/00 ,  G06F11/20 ,  G06F11/14 ,  G06F11/30 ,  G06F11/07

CPC classification number: G06F11/2069 ,  G06F11/0772 ,  G06F11/1453 ,  G06F11/2023 ,  G06F11/3034

Abstract: Multi-site distributed storage systems and computer-implemented methods are described for providing an automatic unplanned failover (AUFO) feature to guarantee non-disruptive operations (e.g., operations of business enterprise applications, operations of software application) even in the presence of failures including, but not limited to, network disconnection between multiple data centers and failures of a data center or cluster.

公开(公告)号：US20220357855A1

公开(公告)日：2022-11-10

申请号：US17510795

申请日：2021-10-26

Applicant: NetApp, Inc.

Inventor： Krishna Murthy Chandraiah Setty Narasingarayanapeta ,  Preetham Shenoy ,  Divya Kathiresan ,  Rakesh Bhargava

IPC: G06F3/06

Abstract: Systems and methods are described for performing persistent inflight tracking of operations (Ops) within a cross-site storage solution. According to one embodiment, a method comprises maintaining state information regarding a data synchronous replication status for a first storage object of a primary storage cluster and a second storage object of a secondary storage cluster. The state information facilitates automatic triggering of resynchronization for data replication between the first storage object and the second storage object. The method includes performing persistent inflight tracking of I/O operations with a first Op log of the primary storage cluster and a second Op log of the secondary storage cluster, establishing and comparing Op ranges for the first and second Op logs, and determining a relation between the Op range of the first Op log and the Op range of the second Op log to prevent divergence of Ops in the first and second Op logs and to support parallel split of the Ops.

公开(公告)号：US12204786B2

公开(公告)日：2025-01-21

申请号：US18158947

申请日：2023-01-24

Applicant: NetApp, Inc.

Inventor： Krishna Murthy Chandraiah Setty Narasingarayanapeta ,  Preetham Shenoy ,  Divya Kathiresan ,  Rakesh Bhargava

IPC: G06F3/06

Abstract: Systems and methods are described for performing persistent inflight tracking of operations (Ops) within a cross-site storage solution. According to one embodiment, a method comprises maintaining state information regarding a data synchronous replication status for a first storage object of a primary storage cluster and a second storage object of a secondary storage cluster. The method includes performing persistent inflight tracking of I/O operations with a first Op log of the primary storage cluster and a second Op log of the secondary storage cluster, establishing and comparing Op ranges for the first and second Op logs, and determining a relation between the Op range of the first Op log and the Op range of the second Op log to prevent divergence of Ops in the first and second Op logs and to support parallel split of the Ops.

公开(公告)号：US20230305936A1

公开(公告)日：2023-09-28

申请号：US18329360

申请日：2023-06-05

Applicant: NetApp, Inc.

Inventor： Rakesh Bhargava ,  Akhil Kaushik ,  Divya Kathiresan ,  Mukul Verma

IPC: G06F11/20 ,  G06F11/14 ,  G06F11/30 ,  G06F11/07

CPC classification number: G06F11/2069 ,  G06F11/2023 ,  G06F11/1453 ,  G06F11/3034 ,  G06F11/0772

Abstract: Multi-site distributed storage systems and computer-implemented methods are described for providing an automatic unplanned failover (AUFO) feature to guarantee non-disruptive operations (e.g., operations of business enterprise applications, operations of software application) even in the presence of failures including, but not limited to, network disconnection between multiple data centers and failures of a data center or cluster.

公开(公告)号：US20230161495A1

公开(公告)日：2023-05-25

申请号：US18158957

申请日：2023-01-24

Applicant: NetApp, Inc.

Inventor： Krishna Murthy Chandraiah Setty Narasingarayanapeta ,  Preetham Shenoy ,  Divya Kathiresan ,  Rakesh Bhargava

IPC: G06F3/06

CPC classification number: G06F3/065 ,  G06F3/0659 ,  G06F3/067 ,  G06F3/0619 ,  G06F3/0613 ,  G06F3/0631 ,  G06F3/0653

Abstract: Systems and methods are described for performing persistent inflight tracking of operations (Ops) within a cross-site storage solution. According to one embodiment, a method comprises maintaining state information regarding a data synchronous replication status for a first storage object of a primary storage cluster and a second storage object of a secondary storage cluster. The method includes performing persistent inflight tracking of I/O operations with a first Op log of the primary storage cluster and a second Op log of the secondary storage cluster, establishing and comparing Op ranges for the first and second Op logs, and determining a relation between the Op range of the first Op log and the Op range of the second Op log to prevent divergence of Ops in the first and second Op logs and to support parallel split of the Ops.

公开(公告)号：US11892982B2

公开(公告)日：2024-02-06

申请号：US17505962

申请日：2021-10-20

Applicant: NetApp, Inc.

Inventor： Murali Subramanian ,  Sohan Shetty ,  Rakesh Bhargava ,  Akhil Kaushik

IPC: G06F16/17 ,  G06F16/23 ,  G06F3/06 ,  G06F11/20 ,  G06F16/178 ,  G06F16/172

CPC classification number: G06F16/178 ,  G06F3/065 ,  G06F3/0614 ,  G06F16/172 ,  G06F16/2365 ,  G06F11/2069 ,  G06F11/2092

Abstract: Systems and methods for reducing delays between the time at which a need for a resynchronization of data replication between a volume of a local CG and its peer volume of a remote CG is detected and the time at which the resynchronization is triggered (Reseed Time Period) are provided. According to an example, information indicative of the direction of data replication between the volume and the peer volume is maintained within a cache of a node. Responsive to a disruptive operation (e.g., relocation of the volume from an original node to a new node), the Reseed Time Period is lessened by proactively adding a passive cache entry to a cache within the new node at the time the CG relationship is created when the new node represents an HA partner of the original node and prior to the volume coming online when the new node represents a non-HA partner.

公开(公告)号：US20230168834A1

公开(公告)日：2023-06-01

申请号：US18158947

申请日：2023-01-24

Applicant: NetApp, Inc.

Inventor： Krishna Murthy Chandraiah Setty Narasingarayanapeta ,  Preetham Shenoy ,  Divya Kathiresan ,  Rakesh Bhargava

IPC: G06F3/06

CPC classification number: G06F3/065 ,  G06F3/067 ,  G06F3/0613 ,  G06F3/0619 ,  G06F3/0631 ,  G06F3/0653 ,  G06F3/0659

Abstract: Systems and methods are described for performing persistent inflight tracking of operations (Ops) within a cross-site storage solution. According to one embodiment, a method comprises maintaining state information regarding a data synchronous replication status for a first storage object of a primary storage cluster and a second storage object of a secondary storage cluster. The method includes performing persistent inflight tracking of I/O operations with a first Op log of the primary storage cluster and a second Op log of the secondary storage cluster, establishing and comparing Op ranges for the first and second Op logs, and determining a relation between the Op range of the first Op log and the Op range of the second Op log to prevent divergence of Ops in the first and second Op logs and to support parallel split of the Ops.

公开(公告)号：US20230121272A1

公开(公告)日：2023-04-20

申请号：US17505962

申请日：2021-10-20

Applicant: NetApp, Inc.

Inventor： Murali Subramanian ,  Sohan Shetty ,  Rakesh Bhargava ,  Akhil Kaushik

IPC: G06F16/178 ,  G06F16/172 ,  G06F16/23

Abstract: Systems and methods for reducing delays between the time at which a need for a resynchronization of data replication between a volume of a local CG and its peer volume of a remote CG is detected and the time at which the resynchronization is triggered (Reseed Time Period) are provided. According to an example, information indicative of the direction of data replication between the volume and the peer volume is maintained within a cache of a node. Responsive to a disruptive operation (e.g., relocation of the volume from an original node to a new node), the Reseed Time Period is lessened by proactively adding a passive cache entry to a cache within the new node at the time the CG relationship is created when the new node represents an HA partner of the original node and prior to the volume coming online when the new node represents a non-HA partner.

公开(公告)号：US20220318104A1

公开(公告)日：2022-10-06

申请号：US17219815

申请日：2021-03-31

Applicant: NetApp, Inc.

Inventor： Rakesh Bhargava ,  Akhil Kaushik ,  Divya Kathiresan ,  Mukul Verma

IPC: G06F11/20 ,  G06F11/07 ,  G06F11/30 ,  G06F11/14

Abstract: Multi-site distributed storage systems and computer-implemented methods are described for providing an automatic unplanned failover (AUFO) feature to guarantee non-disruptive operations (e.g., operations of business enterprise applications, operations of software application) even in the presence of failures including, but not limited to, network disconnection between multiple data centers and failures of a data center or cluster.

公开(公告)号：US20250085880A1

公开(公告)日：2025-03-13

申请号：US18955879

申请日：2024-11-21

Applicant: NetApp, Inc.

Inventor： Krishna Murthy Chandraiah Setty Narasingarayanapeta ,  Preetham Shenoy ,  Divya Kathiresan ,  Rakesh Bhargava

IPC: G06F3/06

Abstract: Systems and methods are described for performing persistent inflight tracking of operations (Ops) within a cross-site storage solution. According to one embodiment, a method comprises maintaining state information regarding a data synchronous replication status for a first storage object of a primary storage cluster and a second storage object of a secondary storage cluster. The method includes performing persistent inflight tracking of I/O operations with a first Op log of the primary storage cluster and a second Op log of the secondary storage cluster, establishing and comparing Op ranges for the first and second Op logs, and determining a relation between the Op range of the first Op log and the Op range of the second Op log to prevent divergence of Ops in the first and second Op logs and to support parallel split of the Ops.