公开(公告)号：US11372807B2

公开(公告)日：2022-06-28

申请号：US16868700

申请日：2020-05-07

Applicant: NetApp Inc.

Inventor： Vani Vully ,  Anil Thoppil ,  James Leong ,  Vitaly Revsin ,  Qinghua Zheng ,  Srishylam Simharajan

IPC: G06F16/30 ,  G06F16/11

Abstract: A copy-free transition tool converts storage objects from a source format associated with a source storage system to a destination format associated with a destination storage system. The transition tool exports configuration information associated with the source storage system to the destination storage system and brings the storage objects offline. Once the transition tool determines that the storage devices containing the storage objects are physically connected to the destination storage system, the tool can convert file systems from the source format to the destination format while leaving data and file layout unchanged. The tool can also modify metadata associated with each of the storage objects to conform to the destination format and store the modified metadata with the destination storage system.

公开(公告)号：US20220083535A1

公开(公告)日：2022-03-17

申请号：US17536363

申请日：2021-11-29

Applicant: NetApp Inc.

Inventor： Kayuri Hasmukh Patel ,  Qinghua Zheng ,  Sumith Makam ,  Kevin Daniel Varghese ,  Yuvraj Ajaykumar Patel ,  Sateesh Kumar Pola ,  Sharmi Suresh Kumar Nair ,  Mihir Gorecha

IPC: G06F16/23 ,  G06F16/13 ,  G06F16/14

Abstract: 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.

公开(公告)号：US11048430B2

公开(公告)日：2021-06-29

申请号：US16382344

申请日：2019-04-12

Applicant: NetApp Inc.

Inventor： Anil Paul Thoppil ,  Cheryl Marie Thompson ,  Qinghua Zheng ,  Jeevan Hunsur Eswara ,  Nicholas Gerald Zehender ,  Ronak Girishbhai Ghadiya ,  Sridevi Jantli

IPC: G06F3/06

Abstract: Techniques are provided for object store mirroring. Data within a storage tier of a node may be determined as being data to tier out to a primary object store based upon a property of the data. A first object is generated to comprise the data. A second object is generated to comprise the data. The first object is transmitted to the primary data store for storage in parallel with the second object being transmitted to a mirror object store for storage. Tiering of the data is designated as successful once acknowledgements are received from both the primary object that the first object was stored and the mirror object store that the second object was stored.

公开(公告)号：US20210089387A1

公开(公告)日：2021-03-25

申请号：US17100905

申请日：2020-11-22

Applicant: NetApp Inc.

Inventor： Ananthan Subramanian ,  Ganga Bhavani Kondapalli ,  Cheryl Marie Thompson ,  Kevin Daniel Varghese ,  Anil Paul Thoppil ,  Qinghua Zheng

IPC: G06F11/10 ,  G06F12/08 ,  G06F3/06 ,  G06F16/178

Abstract: 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.

公开(公告)号：US20170235802A1

公开(公告)日：2017-08-17

申请号：US15045193

申请日：2016-02-16

Applicant: NetApp, Inc.

Inventor： Vani Vully ,  Anil Thoppil ,  James Leong ,  Vitaly Revsin ,  Qinghua Zheng ,  Srishylam Simharajan

IPC: G06F17/30

CPC classification number: G06F16/119

Abstract: A copy-free transition tool converts storage objects from a source format associated with a source storage system to a destination format associated with a destination storage system. The transition tool exports configuration information associated with the source storage system to the destination storage system and brings the storage objects offline. Once the transition tool determines that the storage devices containing the storage objects are physically connected to the destination storage system, the tool can convert file systems from the source format to the destination format while leaving data and file layout unchanged. The tool can also modify metadata associated with each of the storage objects to conform to the destination format and store the modified metadata with the destination storage system.

公开(公告)号：US20240362183A1

公开(公告)日：2024-10-31

申请号：US18308313

申请日：2023-04-27

Applicant: NetApp Inc.

Inventor： Palak Sharma ,  Cheryl Marie Thompson ,  Qinghua Zheng ,  Venkateswarlu Tella

IPC: G06F16/11 ,  G06F16/174

CPC classification number: G06F16/125 ,  G06F16/1744

Abstract: Techniques are provided for mirroring objects between object stores hosted by cloud providers that could have different data layout requirements. An object may be stored within an object store that supports a unified object format where the object is capable of storing compressed data. The object may be mirrored to a destination object store that may also support the unified object format or to a destination object store that does not support the unified object format. If the destination object store does not support the unified object format, then slot header metadata within the object is used to decompress the data within the object into an uncompressed format. The data is packaged from being in the uncompressed format into a fixed offset format supported by the destination object store to create a mirrored object that is stored into the destination object store while retaining compression of the data.

公开(公告)号：US12086116B2

公开(公告)日：2024-09-10

申请号：US17976946

申请日：2022-10-31

Applicant: NetApp Inc.

Inventor： Ananthan Subramanian ,  Sridevi Jantli ,  Anil Paul Thoppil ,  Cheryl Marie Thompson ,  Qinghua Zheng

IPC: G06F16/00 ,  G06F16/215 ,  G06F16/22 ,  G06F16/23

CPC classification number: G06F16/215 ,  G06F16/22 ,  G06F16/2379

Abstract: Techniques are provided for orphan object detection, invalid sequence number detection, and asynchronous object cleanup. A storage system may store data within one or more tiers of storage, such as a 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. Orphan objects, within the remote object store, that are no longer used by the storage system may be detected and/or deleted. When an aggregate of volumes is deleted, corresponding objects, within the remote object store, may be identified and/or deleted. Invalid sequence numbers (e.g., lost or corrupt sequence numbers locally maintained in a metafile) assigned to objects within the remote object store may be identified, deleted, and/or fixed.

公开(公告)号：US20240232168A1

公开(公告)日：2024-07-11

申请号：US18507959

申请日：2023-11-13

Applicant: NetApp Inc.

Inventor： Kayuri Hasmukh Patel ,  Qinghua Zheng ,  Sumith Makam ,  Kevin Daniel Varghese ,  Yuvraj Ajaykumar Patel ,  Sateesh Kumar Pola ,  Sharmi Suresh Kumar Nair ,  Mihir Gorecha

IPC: G06F16/23 ,  G06F16/13 ,  G06F16/14

CPC classification number: G06F16/2365 ,  G06F16/13 ,  G06F16/148

Abstract: 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.

公开(公告)号：US11609703B2

公开(公告)日：2023-03-21

申请号：US17344837

申请日：2021-06-10

Applicant: NetApp Inc.

Inventor： Anil Paul Thoppil ,  Cheryl Marie Thompson ,  Qinghua Zheng ,  Jeevan Hunsur Eswara ,  Nicholas Gerald Zehender ,  Ronak Girishbhai Ghadiya ,  Sridevi Jantli

IPC: G06F3/06

Abstract: Techniques are provided for object store mirroring. Data within a storage tier of a node may be determined as being data to tier out to a primary object store based upon a property of the data. A first object is generated to comprise the data. A second object is generated to comprise the data. The first object is transmitted to the primary data store for storage in parallel with the second object being transmitted to a mirror object store for storage. Tiering of the data is designated as successful once acknowledgements are received from both the primary object that the first object was stored and the mirror object store that the second object was stored.

公开(公告)号：US11210013B2

公开(公告)日：2021-12-28

申请号：US16388999

申请日：2019-04-19

Applicant: NetApp Inc.

Inventor： Anil Paul Thoppil ,  Cheryl Marie Thompson ,  Qinghua Zheng ,  Jeevan Hunsur Eswara ,  Nicholas Gerald Zehender ,  Ronak Girishbhai Ghadiya ,  Sridevi Jantli

IPC: G06F3/06

Abstract: Techniques are provided for object store mirroring. Data within a storage tier of a node may be determined as being data to tier out to a primary object store based upon a property of the data. A first object is generated to comprise the data. A second object is generated to comprise the data. The first object is transmitted to the primary data store for storage in parallel with the second object being transmitted to a mirror object store for storage. Tiering of the data is designated as successful once acknowledgements are received from both the primary object that the first object was stored and the mirror object store that the second object was stored.