Patents by Inventor Kevin Daniel Varghese
Kevin Daniel Varghese 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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Publication number: 20220083535Abstract: Techniques are provided for storage tier verification checks. A determination is made that a mount operation of an aggregate of a set of volumes stored within a multi-tier storage environment has completed. A first metafile and a second metafile are maintained to track information related to the storage of objects of a volume of the aggregate within a remote object store that is a tier of the multi-tier storage environment. A distributed verification is performed between the first metafile and the second metafile to identify an inconsistency. Accordingly, the first metafile and the second metafile are reconciled to address the inconsistency so that storage information within the first metafile and the second metafile are consistent.Type: ApplicationFiled: November 29, 2021Publication date: March 17, 2022Inventors: Kayuri Hasmukh Patel, Qinghua Zheng, Sumith Makam, Kevin Daniel Varghese, Yuvraj Ajaykumar Patel, Sateesh Kumar Pola, Sharmi Suresh Kumar Nair, Mihir Gorecha
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Patent number: 11231989Abstract: Techniques are provided for remote object store error handling. A storage system may store data within one or more tiers of storage, such as a local storage tier (e.g., solid state storage and disks maintained by the storage system), a remote object store (e.g., storage provided by a third party storage provider), and/or other storage tiers. Because the remote object store may not provide the same data consistency and guarantees that the storage system provides for clients such as through the local storage tier, additional validation is provided by the storage system for the remote object store. For example, when data is put into an object of the remote object store, a verification get operation is performed to read and validate information within a header of the object. Other verifications and checks are performed such as using a locally stored metafile to detect corrupt or lost metadata and/or objects.Type: GrantFiled: November 22, 2020Date of Patent: January 25, 2022Assignee: NetApp, Inc.Inventors: Ananthan Subramanian, Ganga Bhavani Kondapalli, Cheryl Marie Thompson, Kevin Daniel Varghese, Anil Paul Thoppil, Qinghua Zheng
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Patent number: 11188520Abstract: Techniques are provided for storage tier verification checks. A determination is made that a mount operation of an aggregate of a set of volumes stored within a multi-tier storage environment has completed. A first metafile and a second metafile are maintained to track information related to the storage of objects of a volume of the aggregate within a remote object store that is a tier of the multi-tier storage environment. A distributed verification is performed between the first metafile and the second metafile to identify an inconsistency. Accordingly, the first metafile and the second metafile are reconciled to address the inconsistency so that storage information within the first metafile and the second metafile are consistent.Type: GrantFiled: March 2, 2020Date of Patent: November 30, 2021Assignee: NetApp Inc.Inventors: Kayuri Hasmukh Patel, Qinghua Zheng, Sumith Makam, Kevin Daniel Varghese, Yuvraj Ajaykumar Patel, Sateesh Kumar Pola, Sharmi Suresh Kumar Nair, Mihir Gorecha
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Publication number: 20210089387Abstract: Techniques are provided for remote object store error handling. A storage system may store data within one or more tiers of storage, such as a local storage tier (e.g., solid state storage and disks maintained by the storage system), a remote object store (e.g., storage provided by a third party storage provider), and/or other storage tiers. Because the remote object store may not provide the same data consistency and guarantees that the storage system provides for clients such as through the local storage tier, additional validation is provided by the storage system for the remote object store. For example, when data is put into an object of the remote object store, a verification get operation is performed to read and validate information within a header of the object. Other verifications and checks are performed such as using a locally stored metafile to detect corrupt or lost metadata and/or objects.Type: ApplicationFiled: November 22, 2020Publication date: March 25, 2021Inventors: Ananthan Subramanian, Ganga Bhavani Kondapalli, Cheryl Marie Thompson, Kevin Daniel Varghese, Anil Paul Thoppil, Qinghua Zheng
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Patent number: 10853166Abstract: Techniques are provided for remote object store error handling. A storage system may store data within one or more tiers of storage, such as a local storage tier (e.g., solid state storage and disks maintained by the storage system), a remote object store (e.g., storage provided by a third party storage provider), and/or other storage tiers. Because the remote object store may not provide the same data consistency and guarantees that the storage system provides for clients such as through the local storage tier, additional validation is provided by the storage system for the remote object store. For example, when data is put into an object of the remote object store, a verification get operation is performed to read and validate information within a header of the object. Other verifications and checks are performed such as using a locally stored metafile to detect corrupt or lost metadata and/or objects.Type: GrantFiled: July 2, 2019Date of Patent: December 1, 2020Assignee: NetApp Inc.Inventors: Ananthan Subramanian, Ganga Bhavani Kondapalli, Cheryl Marie Thompson, Kevin Daniel Varghese, Anil Paul Thoppil, Qinghua Zheng
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Publication number: 20200201842Abstract: Techniques are provided for storage tier verification checks. A determination is made that a mount operation of an aggregate of a set of volumes stored within a multi-tier storage environment has completed. A first metafile and a second metafile are maintained to track information related to the storage of objects of a volume of the aggregate within a remote object store that is a tier of the multi-tier storage environment. A distributed verification is performed between the first metafile and the second metafile to identify an inconsistency. Accordingly, the first metafile and the second metafile are reconciled to address the inconsistency so that storage information within the first metafile and the second metafile are consistent.Type: ApplicationFiled: March 2, 2020Publication date: June 25, 2020Inventors: Kayuri Hasmukh Patel, Qinghua Zheng, Sumith Makam, Kevin Daniel Varghese, Yuvraj Ajaykumar Patel, Sateesh Kumar Pola, Sharmi Suresh Kumar Nair, Mihir Gorecha
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Patent number: 10621162Abstract: Techniques are provided for storage tier verification checks. A determination is made that a mount operation of an aggregate of a set of volumes stored within a multi-tier storage environment has completed. A first metafile and a second metafile are maintained to track information related to the storage of objects of a volume of the aggregate within a remote object store that is a tier of the multi-tier storage environment. A distributed verification is performed between the first metafile and the second metafile to identify an inconsistency. Accordingly, the first metafile and the second metafile are reconciled to address the inconsistency so that storage information within the first metafile and the second metafile are consistent.Type: GrantFiled: June 16, 2017Date of Patent: April 14, 2020Assignee: NetApp Inc.Inventors: Kayuri Hasmukh Patel, Qinghua Zheng, Sumith Makam, Kevin Daniel Varghese, Yuvraj Ajaykumar Patel, Sateesh Kumar Pola, Sharmi Suresh Kumar Nair, Mihir Gorecha
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Publication number: 20200073567Abstract: Techniques are provided for multi-tier write allocation. A storage system may store data within a multi-tier storage environment comprising a first storage tier (e.g., storage devices maintained by the storage system), a second storage tier (e.g., a remote object store provided by a third party storage provider), and/or other storage tiers. A determination is made that data (e.g., data of a write request received by the storage system) is to be stored within the second storage tier. The data is stored into a staging area of the first storage tier. A second storage tier location identifier, for referencing the data according to a format utilized by the second storage tier, is assigned to the data and provided to a file system hosting the data. The data is then destaged from the staging area into the second storage tier, such as within an object stored within the remote object store.Type: ApplicationFiled: November 11, 2019Publication date: March 5, 2020Inventors: Ganga Bhavani Kondapalli, Kevin Daniel Varghese, Ananthan Subramanian, Cheryl Thompson, Anil Paul Thoppil
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Patent number: 10489073Abstract: Techniques are provided for multi-tier write allocation. A storage system may store data within a multi-tier storage environment comprising a first storage tier (e.g., storage devices maintained by the storage system), a second storage tier (e.g., a remote object store provided by a third party storage provider), and/or other storage tiers. A determination is made that data (e.g., data of a write request received by the storage system) is to be stored within the second storage tier. The data is stored into a staging area of the first storage tier. A second storage tier location identifier, for referencing the data according to a format utilized by the second storage tier, is assigned to the data and provided to a file system hosting the data. The data is then destaged from the staging area into the second storage tier, such as within an object stored within the remote object store.Type: GrantFiled: April 28, 2017Date of Patent: November 26, 2019Assignee: NetApp Inc.Inventors: Ganga Bhavani Kondapalli, Kevin Daniel Varghese, Ananthan Subramanian, Cheryl Marie Thompson, Anil Paul Thoppil
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Publication number: 20190324844Abstract: Techniques are provided for remote object store error handling. A storage system may store data within one or more tiers of storage, such as a local storage tier (e.g., solid state storage and disks maintained by the storage system), a remote object store (e.g., storage provided by a third party storage provider), and/or other storage tiers. Because the remote object store may not provide the same data consistency and guarantees that the storage system provides for clients such as through the local storage tier, additional validation is provided by the storage system for the remote object store. For example, when data is put into an object of the remote object store, a verification get operation is performed to read and validate information within a header of the object. Other verifications and checks are performed such as using a locally stored metafile to detect corrupt or lost metadata and/or objects.Type: ApplicationFiled: July 2, 2019Publication date: October 24, 2019Inventors: Ananthan Subramanian, Ganga Bhavani Kondapalli, Cheryl Marie Thompson, Kevin Daniel Varghese, Anil Paul Thoppil, Qinghua Zheng
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Patent number: 10360099Abstract: Techniques are provided for remote object store error handling. A storage system may store data within one or more tiers of storage, such as a local storage tier (e.g., solid state storage and disks maintained by the storage system), a remote object store (e.g., storage provided by a third party storage provider), and/or other storage tiers. Because the remote object store may not provide the same data consistency and guarantees that the storage system provides for clients such as through the local storage tier, additional validation is provided by the storage system for the remote object store. For example, when data is put into an object of the remote object store, a verification get operation is performed to read and validate information within a header of the object. Other verifications and checks are performed such as using a locally stored metafile to detect corrupt or lost metadata and/or objects.Type: GrantFiled: April 28, 2017Date of Patent: July 23, 2019Assignee: NetApp Inc.Inventors: Ananthan Subramanian, Ganga Bhavani Kondapalli, Cheryl Marie Thompson, Kevin Daniel Varghese, Anil Paul Thoppil, Qinghua Zheng
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Publication number: 20180365281Abstract: Techniques are provided for storage tier verification checks. A determination is made that a mount operation of an aggregate of a set of volumes stored within a multi-tier storage environment has completed. A first metafile and a second metafile are maintained to track information related to the storage of objects of a volume of the aggregate within a remote object store that is a tier of the multi-tier storage environment. A distributed verification is performed between the first metafile and the second metafile to identify an inconsistency. Accordingly, the first metafile and the second metafile are reconciled to address the inconsistency so that storage information within the first metafile and the second metafile are consistent.Type: ApplicationFiled: June 16, 2017Publication date: December 20, 2018Inventors: Kayuri Hasmukh Patel, Qinghua Zheng, Sumith Makam, Kevin Daniel Varghese, Yuvraj Ajaykumar Patel, Sateesh Kumar Pola, Sharmi Suresh Kumar Nair, Mihir Gorecha
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Publication number: 20180314449Abstract: Techniques are provided for multi-tier write allocation. A storage system may store data within a multi-tier storage environment comprising a first storage tier (e.g., storage devices maintained by the storage system), a second storage tier (e.g., a remote object store provided by a third party storage provider), and/or other storage tiers. A determination is made that data (e.g., data of a write request received by the storage system) is to be stored within the second storage tier. The data is stored into a staging area of the first storage tier. A second storage tier location identifier, for referencing the data according to a format utilized by the second storage tier, is assigned to the data and provided to a file system hosting the data. The data is then destaged from the staging area into the second storage tier, such as within an object stored within the remote object store.Type: ApplicationFiled: April 28, 2017Publication date: November 1, 2018Inventors: Ganga Bhavani Kondapalli, Kevin Daniel Varghese, Ananthan Subramanian, Cheryl Marie Thompson, Anil Paul Thoppil
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Publication number: 20180314725Abstract: Techniques are provided for remote object store error handling. A storage system may store data within one or more tiers of storage, such as a local storage tier (e.g., solid state storage and disks maintained by the storage system), a remote object store (e.g., storage provided by a third party storage provider), and/or other storage tiers. Because the remote object store may not provide the same data consistency and guarantees that the storage system provides for clients such as through the local storage tier, additional validation is provided by the storage system for the remote object store. For example, when data is put into an object of the remote object store, a verification get operation is performed to read and validate information within a header of the object. Other verifications and checks are performed such as using a locally stored metafile to detect corrupt or lost metadata and/or objects.Type: ApplicationFiled: April 28, 2017Publication date: November 1, 2018Inventors: Ananthan Subramanian, Ganga Bhavani Kondapalli, Cheryl Marie Thompson, Kevin Daniel Varghese, Anil Paul Thoppil, Qinghua Zheng
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Patent number: 9798496Abstract: Methods and systems for a networked system are provided. One method includes generating an object by a processor for storing a plurality of data chunks at a storage device, where the object includes a header segment and a data segment, the header segment providing a first offset address where an uncompressed data chunk is stored within the object and a second offset address of the object indicating a beginning of a compressed group having compressed data chunks and providing an indicator of a compression group size; reading the header segment by the processor to retrieve the second offset and the compressed group size in response to a first request for a data chunk within the compressed group; and decompressing the data chunk of the compressed group by the processor and providing the uncompressed data chunk for completing the first read request.Type: GrantFiled: January 13, 2016Date of Patent: October 24, 2017Assignee: NETAPP, INC.Inventors: Kevin Daniel Varghese, Anil Paul Thoppil
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Publication number: 20170199707Abstract: Methods and systems for a networked system are provided. One method includes generating an object by a processor for storing a plurality of data chunks at a storage device, where the object includes a header segment and a data segment, the header segment providing a first offset address where an uncompressed data chunk is stored within the object and a second offset address of the object indicating a beginning of a compressed group having compressed data chunks and providing an indicator of a compression group size; reading the header segment by the processor to retrieve the second offset and the compressed group size in response to a first request for a data chunk within the compressed group; and decompressing the data chunk of the compressed group by the processor and providing the uncompressed data chunk for completing the first read request.Type: ApplicationFiled: January 13, 2016Publication date: July 13, 2017Applicant: NETAPP, INC.Inventors: Kevin Daniel Varghese, Anil Paul Thoppil