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：US11740820B1

公开(公告)日：2023-08-29

申请号：US17742111

申请日：2022-05-11

Applicant: NETAPP, INC.

Inventor： Mathankumar Devarajan ,  Girish Hebbale Venkatasubbaiah ,  Venkateswarlu Tella ,  Dnyaneshwar Nagorao Pawar ,  Harsh Tiwari

IPC: G06F3/06

CPC classification number: G06F3/064 ,  G06F3/065 ,  G06F3/0607 ,  G06F3/067 ,  G06F3/0656

Abstract: Methods and systems for a storage environment are provided. One method includes identifying, by a processor, a plurality of block numbers of a fragmented address space for re-allocation, each block number associated with data stored by a file system in a storage device of a storage system; determining, by the processor, compressed data associated with a block number from among the plurality of block numbers; verifying, by the processor, that an indirect block of a hierarchical structure maintained by the file system references the block number associated with the compressed data; and copying, by the processor, the compressed data to a new block, without decompressing the data.

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：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：US20200293212A1

公开(公告)日：2020-09-17

申请号：US16354562

申请日：2019-03-15

Applicant: NetApp Inc.

Inventor： Srinivasan Narayanamurthy ,  Dnyaneshwar Nagorao Pawar ,  Jagadish Vasudeva ,  Parag Deshmukh ,  Siddhartha Nandi

IPC: G06F3/06 ,  H04L9/08

Abstract: Techniques are provided for aggregate inline deduplication and volume granularity encryption. For example, data that is exclusive to a volume of a tenant is encrypted using an exclusive encryption key accessible to the tenant. The exclusive encryption key of that tenant is inaccessible to other tenants. Shared data that has been deduplicated and shared between the volume and another volume of a different tenant is encrypted using a shared encryption key of the volume. The shared encryption key is made available to other tenants. In this way, data can be deduplicated across multiple volumes of different tenants of a storage environment, while maintaining security and data privacy at a volume level.

公开(公告)号：US10585611B2

公开(公告)日：2020-03-10

申请号：US15138435

申请日：2016-04-26

Applicant: NetApp Inc.

Inventor： Mukul Sharma ,  Kartik Rathnakar ,  Dnyaneshwar Nagorao Pawar ,  Venkateswarlu Tella ,  Kiran Nenmeli Srinivasan ,  Rajesh Khandelwal ,  Alok Sharma

IPC: G06F3/06

Abstract: One or more techniques and/or computing devices are provided for inline deduplication. For example, a checksum hash table and/or a block number hash table may be maintained within memory (e.g., a storage controller may maintain the hash tables in-core). The checksum hash table may be utilized for inline deduplication to identify potential donor blocks that may comprise the same data as an incoming storage operation. Data within an in-core buffer cache is eligible as potential donor blocks so that inline deduplication may be performed using data from the in-core buffer cache, which may mitigate disk access to underlying storage for which the in-core buffer cache is used for caching. The block number hash table may be used for updating or removing entries from the hash tables, such as for blocks that are no longer eligible as potential donor blocks (e.g., deleted blocks, blocks evicted from the in-core buffer cache, etc.).

公开(公告)号：US20170308320A1

公开(公告)日：2017-10-26

申请号：US15138435

申请日：2016-04-26

Applicant: NetApp Inc.

Inventor： Mukul Sharma ,  Kartik Rathnakar ,  Dnyaneshwar Nagorao Pawar ,  Venkateswarlu Tella ,  Kiran Nenmeli Srinivasan ,  Rajesh Khandelwal ,  Alok Sharma

IPC: G06F3/06

CPC classification number: G06F3/0641 ,  G06F3/0605 ,  G06F3/0608 ,  G06F3/0659 ,  G06F3/0665 ,  G06F3/067 ,  G06F3/0679

Abstract: One or more techniques and/or computing devices are provided for inline deduplication. For example, a checksum hash table and/or a block number hash table may be maintained within memory (e.g., a storage controller may maintain the hash tables in-core). The checksum hash table may be utilized for inline deduplication to identify potential donor blocks that may comprise the same data as an incoming storage operation. Data within an in-core buffer cache is eligible as potential donor blocks so that inline deduplication may be performed using data from the in-core buffer cache, which may mitigate disk access to underlying storage for which the in-core buffer cache is used for caching. The block number hash table may be used for updating or removing entries from the hash tables, such as for blocks that are no longer eligible as potential donor blocks (e.g., deleted blocks, blocks evicted from the in-core buffer cache, etc.).