Patents by Inventor Dnyaneshwar Nagorao Pawar
Dnyaneshwar Nagorao Pawar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11144502Abstract: 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.Type: GrantFiled: March 8, 2019Date of Patent: October 12, 2021Assignee: NetApp Inc.Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar, Atul Ramesh Pandit, Anil Kumar Ponnapur, Jose Mathew, Sriram Venketaraman
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Patent number: 11144503Abstract: 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.Type: GrantFiled: May 2, 2019Date of Patent: October 12, 2021Assignee: NetApp Inc.Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar, Atul Ramesh Pandit, Anil Kumar Ponnapur, Jose Mathew, Sriram Venketaraman
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Publication number: 20210271642Abstract: Techniques are provided for managing objects within an object store. An object is maintained within an object store. The object is used to store data of a snapshot of a file system hosted by a remote computing device. A determination is made that the snapshot was deleted by the remote computing device. Bitmaps describing objects within the object store that are related to snapshots of the file system are evaluated to determine that the object is unique to the deleted snapshot. The object is freed from storage within the object store.Type: ApplicationFiled: May 17, 2021Publication date: September 2, 2021Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar, Atul Ramesh Pandit, Kiyoshi James Komatsu
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Patent number: 11055005Abstract: Techniques are provided for background deduplication using trusted fingerprints. Trusted fingerprints of blocks are inserted into a trusted fingerprint store as the blocks are being allocated by a file system sequentially according to block numbers of the blocks. In this way, the trusted fingerprint store is indexed by block numbers of where the blocks are stored. Blocks that are to be deduplicated are identifying by sorting the blocks based upon weak fingerprints, and moving duplicates to a dup file. The dup file is sorted based upon block numbers. Trusted fingerprints are loaded from the trusted fingerprint store for deduplicating the blocks within the dup file.Type: GrantFiled: January 23, 2019Date of Patent: July 6, 2021Assignee: NetApp, Inc.Inventors: Dnyaneshwar Nagorao Pawar, Kartik Rathnakar
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Patent number: 11016943Abstract: Techniques are provided for managing objects within an object store. An object is maintained within an object store. The object is used to store data of a snapshot of a file system hosted by a remote computing device. A determination is made that the snapshot was deleted by the remote computing device. Bitmaps describing objects within the object store that are related to snapshots of the file system are evaluated to determine that the object is unique to the deleted snapshot. The object is freed from storage within the object store.Type: GrantFiled: March 8, 2019Date of Patent: May 25, 2021Assignee: NetApp, Inc.Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar, Atul Ramesh Pandit, Kiyoshi James Komatsu
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Patent number: 11010078Abstract: 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.).Type: GrantFiled: January 28, 2020Date of Patent: May 18, 2021Assignee: NetApp Inc.Inventors: Mukul Sharma, Kartik Rathnakar, Dnyaneshwar Nagorao Pawar, Venkateswarlu Telia, Kiran Nenmeli Srinivasan, Rajesh Khandelwal, Alok Sharma
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Publication number: 20210103397Abstract: 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.Type: ApplicationFiled: November 30, 2020Publication date: April 8, 2021Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar
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Patent number: 10852976Abstract: 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.Type: GrantFiled: March 8, 2019Date of Patent: December 1, 2020Assignee: NetApp Inc.Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar
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Publication number: 20200293212Abstract: 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.Type: ApplicationFiled: March 15, 2019Publication date: September 17, 2020Inventors: Srinivasan Narayanamurthy, Dnyaneshwar Nagorao Pawar, Jagadish Vasudeva, Parag Deshmukh, Siddhartha Nandi
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Publication number: 20200285612Abstract: Techniques are provided for managing objects within an object store. An object is maintained within an object store. The object comprises a plurality of slots. Each slot is used to store a unit of data accessible to applications hosted by remote computing devices. The object comprises an object header used to store metadata for each slot. A determination is made that the object is a fragmented object comprising an in-use slot of in-use data and a freed slot from which data was freed. The object is compacted to retain in-use data and exclude freed data as a rewritten object.Type: ApplicationFiled: March 8, 2019Publication date: September 10, 2020Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar, Atul Ramesh Pandit, Kiyoshi James Komatsu
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Publication number: 20200285614Abstract: 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.Type: ApplicationFiled: May 2, 2019Publication date: September 10, 2020Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar, Atul Ramesh Pandit, Anil Kumar Ponnapur, Jose Mathew, Sriram Venketaraman
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Publication number: 20200285613Abstract: 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.Type: ApplicationFiled: March 8, 2019Publication date: September 10, 2020Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar, Atul Ramesh Pandit, Anil Kumar Ponnapur, Jose Mathew, Sriram Venketaraman
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Publication number: 20200285410Abstract: 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.Type: ApplicationFiled: March 8, 2019Publication date: September 10, 2020Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar
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Publication number: 20200285616Abstract: Techniques are provided for managing objects within an object store. An object is maintained within an object store. The object is used to store data of a snapshot of a file system hosted by a remote computing device. A determination is made that the snapshot was deleted by the remote computing device. Bitmaps describing objects within the object store that are related to snapshots of the file system are evaluated to determine that the object is unique to the deleted snapshot. The object is freed from storage within the object store.Type: ApplicationFiled: March 8, 2019Publication date: September 10, 2020Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar, Atul Ramesh Pandit, Kiyoshi James Komatsu
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Publication number: 20200285611Abstract: Techniques are provided for managing objects within an object store. An object is maintained within an object store. In an embodiment, a rule is enforced for the object that in-use slots of the object are non-modifiable and unused slots of the object are modifiable. Metadata of additional information for a slot within the object is attached to the object header. A first application allowed to access user data within the slot is provided access to the user data without being provided access to the metadata. A second application allowed access to the user data and the additional information is provided with access to the user data and the metadata for identifying a location of additional information within the object.Type: ApplicationFiled: March 8, 2019Publication date: September 10, 2020Inventors: Tijin George, Jagavar Nehra, Roopesh Chuggani, Dnyaneshwar Nagorao Pawar, Atul Ramesh Pandit, Kiyoshi James Komatsu
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Publication number: 20200159432Abstract: 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.).Type: ApplicationFiled: January 28, 2020Publication date: May 21, 2020Inventors: Mukul Sharma, Kartik Rathnakar, Dnyaneshwar Nagorao Pawar, Venkateswarlu Tella, Kiran Nenmeli Srinivasan, Rajesh Khandelwal, Alok Sharma
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Publication number: 20200117379Abstract: Techniques are provided for background deduplication using trusted fingerprints. Trusted fingerprints of blocks are inserted into a trusted fingerprint store as the blocks are being allocated by a file system sequentially according to block numbers of the blocks. In this way, the trusted fingerprint store is indexed by block numbers of where the blocks are stored. Blocks that are to be deduplicated are identifying by sorting the blocks based upon weak fingerprints, and moving duplicates to a dup file. The dup file is sorted based upon block numbers. Trusted fingerprints are loaded from the trusted fingerprint store for deduplicating the blocks within the dup file.Type: ApplicationFiled: January 23, 2019Publication date: April 16, 2020Inventors: Dnyaneshwar Nagorao PAWAR, Kartik Rathnakar
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Patent number: 10585611Abstract: 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.).Type: GrantFiled: April 26, 2016Date of Patent: March 10, 2020Assignee: NetApp Inc.Inventors: Mukul Sharma, Kartik Rathnakar, Dnyaneshwar Nagorao Pawar, Venkateswarlu Tella, Kiran Nenmeli Srinivasan, Rajesh Khandelwal, Alok Sharma
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Publication number: 20170308320Abstract: 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.).Type: ApplicationFiled: April 26, 2016Publication date: October 26, 2017Inventors: Mukul Sharma, Kartik Rathnakar, Dnyaneshwar Nagorao Pawar, Venkateswarlu Tella, Kiran Nenmeli Srinivasan, Rajesh Khandelwal, Alok Sharma