公开(公告)号：US20240362054A1

公开(公告)日：2024-10-31

申请号：US18308720

申请日：2023-04-28

Applicant: NetApp Inc.

Inventor： Dnyaneshwar Nagorao Pawar ,  Sumith Makam ,  Roopesh Chuggani ,  Vineeth Kumar Chalil Karinta ,  Tijin George

IPC: G06F9/455

CPC classification number: G06F9/45558 ,  G06F2009/45562 ,  G06F2009/45583 ,  G06F2009/45595

Abstract: Techniques are provided for virtual machine hosting and disaster recovery across virtual machine hosting environments, such as hypervisors, supporting different virtual machine formats. A virtual machine is hosted by a first hypervisor that supports a first virtual machine format. Snapshots capturing virtual machine disks of the virtual machine are created and backed up to a cloud storage environment. The snapshots are used to restore the virtual machine as a destination virtual machine hosted by a second hypervisor supporting a second virtual machine format different than the first virtual machine format. As part of restoring the destination virtual machine, virtual machine disks of the virtual machine are reformatted according to the second virtual machine format supported by the second hypervisor.

公开(公告)号：US11687265B2

公开(公告)日：2023-06-27

申请号：US17106268

申请日：2020-11-30

Applicant: NetApp inc.

Inventor： Tijin George ,  Jagavar Nehra ,  Roopesh Chuggani ,  Dnyaneshwar Nagorao Pawar

IPC: G06F16/00 ,  G06F3/06 ,  G06F16/11 ,  G06F16/22

CPC classification number: G06F3/0641 ,  G06F3/064 ,  G06F3/067 ,  G06F3/0608 ,  G06F3/0644 ,  G06F3/0665 ,  G06F16/128 ,  G06F16/2246

Abstract: Techniques are provided for incremental snapshot copy to an object store. A list of deallocated block numbers of primary storage of a computing device are identified. Entries for the list of deallocated block numbers are removed from a mapping metafile. A list of changed block numbers corresponding to changes between a current snapshot of the primary storage and a prior copied snapshot copied from the primary storage to the object store is determined. The mapping metafile is evaluated using the list of changed block numbers to identify a deduplicated set of changed block numbers without entries within the mapping metafile. An object, comprising data of the deduplicated set of changed block numbers, is transmitted to the object store for storage as a new copied snapshot.

公开(公告)号：US11544011B1

公开(公告)日：2023-01-03

申请号：US17387792

申请日：2021-07-28

Applicant: NETAPP, INC.

Inventor： Sumith Makam ,  Rahul Thapliyal ,  Kartik R ,  Roopesh Chuggani ,  Abhisar Lnu ,  Maria Josephine Priyanka S

IPC: G06F3/06

Abstract: Methods and systems for a networked storage system are provided. One method includes: receiving, by a first storage node, a request to modify data stored using a logical storage object presented by the first storage node, the first storage node communicating with a second storage node configured as a failover partner of the first storage node; transmitting, by the first storage node, an invalidation request to the second storage node to invalidate an entry in a storage location cache of the second storage node, the entry indicating a storage location where data is stored by the first storage node, before modification; and responding, by the first storage node, to the request after modifying the data and upon receiving a response from the second storage node indicating successful invalidation of the entry.

公开(公告)号：US11500591B1

公开(公告)日：2022-11-15

申请号：US17387815

申请日：2021-07-28

Applicant: NETAPP, INC.

Inventor： Sumith Makam ,  Rahul Thapliyal ,  Kartik R ,  Roopesh Chuggani ,  Abhisar Lnu ,  Maria Josephine Priyanka S

IPC: G06F3/06 ,  G06F12/0891

Abstract: Methods and systems for a networked storage system are provided. One method includes transmitting, by a first node, an invalidation request to a second node to invalidate an entry of a storage location cache of the second node, the entry indicating a storage location to write data in response to a write request received by the first node; updating, by the first node, a memory structure at the first node for sending a heartbeat message to disable use of the storage location cache by the second node; and responding, by the first node, to the write request, after a response to disable the use of the storage location cache is received from the second node or a certain duration, T1, has elapsed since the heartbeat message was sent to the second node and no response was received from the second node.

公开(公告)号：US11481326B1

公开(公告)日：2022-10-25

申请号：US17387776

申请日：2021-07-28

Applicant: NETAPP, INC.

Inventor： Sumith Makam ,  Rahul Thapliyal ,  Kartik R ,  Roopesh Chuggani ,  Abhisar Lnu ,  Maria Josephine Priyanka S

IPC: G06F12/0813

Abstract: Methods and systems for a networked storage system are provided. One method includes: utilizing, by a first node, a storage location cache to determine if an entry associated with a first read request for data stored using a logical object owned by a second node configured as a failover partner node of the first node exists; transmitting, by the first node, the first read request to the second node; receiving, by the first node, a response to the first read request from the second node with requested data; inserting, by the first node, an entry in the storage location cache indicating the storage location information for the data; and utilizing, by the first node, the inserted entry in the storage location cache to determine storage location of data requested by a second read request received by the first node.

公开(公告)号：US20220027313A1

公开(公告)日：2022-01-27

申请号：US17498263

申请日：2021-10-11

Applicant: NetApp Inc.

Inventor： Tijin George ,  Jagavar Nehra ,  Roopesh Chuggani ,  Dnyaneshwar Nagorao Pawar ,  Atul Ramesh Pandit ,  Anil Kumar Ponnapur ,  Jose Matthew ,  Sriram Venketaraman

IPC: G06F16/11 ,  G06F16/178

Abstract: Techniques are provided for an object file system for an object store. Data, maintained by a computing device, is stored into slots of an object. The data within the slots of the object is represented as a data structure comprising a plurality of nodes comprising cloud block numbers used to identify the object and particular slots of the object. A mapping metafile is maintained to map block numbers used to store the data by the computing device to cloud block numbers of nodes representing portion of the data stored within slots of the object. The object is stored into the object store, and the mapping metafile and the data structure are used to provide access through the object file system to portions of data within the object.

公开(公告)号：US11144503B2

公开(公告)日：2021-10-12

申请号：US16401294

申请日：2019-05-02

Applicant: NetApp Inc.

Inventor： Tijin George ,  Jagavar Nehra ,  Roopesh Chuggani ,  Dnyaneshwar Nagorao Pawar ,  Atul Ramesh Pandit ,  Anil Kumar Ponnapur ,  Jose Mathew ,  Sriram Venketaraman

IPC: G06F16/14 ,  G06F16/11 ,  G06F16/182 ,  G06F11/14

Abstract: Techniques are provided for an object file system for an object store. Data, maintained by a computing device, is stored into slots of an object. The data within the slots of the object is represented as a data structure comprising a plurality of nodes comprising cloud block numbers used to identify the object and particular slots of the object. A mapping metafile is maintained to map block numbers used to store the data by the computing device to cloud block numbers of nodes representing portion of the data stored within slots of the object. The object is stored into the object store, and the mapping metafile and the data structure are used to provide access through the object file system to portions of data within the object.

公开(公告)号：US11144502B2

公开(公告)日：2021-10-12

申请号：US16296417

申请日：2019-03-08

Applicant: NetApp Inc.

Inventor： Tijin George ,  Jagavar Nehra ,  Roopesh Chuggani ,  Dnyaneshwar Nagorao Pawar ,  Atul Ramesh Pandit ,  Anil Kumar Ponnapur ,  Jose Mathew ,  Sriram Venketaraman

IPC: G06F16/14 ,  G06F16/11 ,  G06F16/182 ,  G06F11/14

Abstract: Techniques are provided for an object file system for an object store. Data, maintained by a computing device, is stored into slots of an object. The data within the slots of the object is represented as a data structure comprising a plurality of nodes comprising cloud block numbers used to identify the object and particular slots of the object. A mapping metafile is maintained to map block numbers used to store the data by the computing device to cloud block numbers of nodes representing portion of the data stored within slots of the object. The object is stored into the object store, and the mapping metafile and the data structure are used to provide access through the object file system to portions of data within the object.

公开(公告)号：US20210103397A1

公开(公告)日：2021-04-08

申请号：US17106268

申请日：2020-11-30

Applicant: NetApp Inc.

Inventor： Tijin George ,  Jagavar Nehra ,  Roopesh Chuggani ,  Dnyaneshwar Nagorao Pawar

IPC: G06F3/06 ,  G06F16/11 ,  G06F16/22

Abstract: Techniques are provided for incremental snapshot copy to an object store. A list of deallocated block numbers of primary storage of a computing device are identified. Entries for the list of deallocated block numbers are removed from a mapping metafile. A list of changed block numbers corresponding to changes between a current snapshot of the primary storage and a prior copied snapshot copied from the primary storage to the object store is determined. The mapping metafile is evaluated using the list of changed block numbers to identify a deduplicated set of changed block numbers without entries within the mapping metafile. An object, comprising data of the deduplicated set of changed block numbers, is transmitted to the object store for storage as a new copied snapshot.

公开(公告)号：US12229431B2

公开(公告)日：2025-02-18

申请号：US18614986

申请日：2024-03-25

Applicant: NetApp Inc.

Inventor： Jagavar Nehra ,  Roopesh Chuggani ,  Abhisar ,  Sumith Makam

IPC: G06F11/14 ,  G06F3/06

Abstract: Techniques are provided for caching data during an on-demand restore using a cloud block map. A client may be provided with access to an on-demand volume during a restore process that copies backup data from a snapshot within a remote object store to the on-demand volume stored within local storage. In response to receiving a request from the client for a block of the backup data not yet restored from the snapshot to the on-demand volume, the block may be retrieved from the snapshot in the remote object store. The block may be cached within a cloud block map stored within the local storage as a cached block. The client may be provided with access to the cached block.