公开(公告)号：US11188520B2

公开(公告)日：2021-11-30

申请号：US16806379

申请日：2020-03-02

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：US20200326873A1

公开(公告)日：2020-10-15

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.

公开(公告)号：US20200326858A1

公开(公告)日：2020-10-15

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：US10552389B2

公开(公告)日：2020-02-04

申请号：US15581447

申请日：2017-04-28

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

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：US10360099B2

公开(公告)日：2019-07-23

申请号：US15581531

申请日：2017-04-28

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：US20180314725A1

公开(公告)日：2018-11-01

申请号：US15581531

申请日：2017-04-28

Applicant: NetApp Inc.

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

IPC: G06F17/30 ,  G06F11/10

CPC classification number: G06F11/1004 ,  G06F3/0619 ,  G06F12/08 ,  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：US20180314719A1

公开(公告)日：2018-11-01

申请号：US15581447

申请日：2017-04-28

Applicant: NetApp Inc.

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

IPC: G06F17/30

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：US12204784B1

公开(公告)日：2025-01-21

申请号：US18649906

申请日：2024-04-29

Applicant: NetApp, Inc.

Inventor： Anil Paul Thoppil ,  Ananthan Subramanian ,  Kevin Daniel Varghese ,  Garima Choudhary ,  Qinghua Zheng

IPC: G06F3/06 ,  G06F16/13

Abstract: Systems and methods for performing a zero-copy volume move between nodes of a distributed storage system are provided. In one example, an approach for performing a zero-copy volume move is proposed in which volume data may be maintained in place within a storage pod and need not be copied to move a given volume between the source node and the destination node. In one embodiment, metadata (e.g., a top-most physical volume block number (PVBN) of a node tree representing the volume at issue) of a write-anywhere file system is copied from the source node to the destination node. Since the storage pod is associated with a global PVBN space that is visible and accessible to all nodes of the distributed storage system, as a result of copying the top-mode PVBN of the volume to the destination node, anything below the top-most PVBN will automatically be visible to the destination node.

公开(公告)号：US20240362124A1

公开(公告)日：2024-10-31

申请号：US18308337

申请日：2023-04-27

Applicant: NetApp Inc.

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

IPC: G06F11/14 ,  G06F16/215 ,  G06F16/25

CPC classification number: G06F11/1464 ,  G06F16/1744 ,  G06F16/184 ,  G06F16/215 ,  G06F16/258 ,  G06F2201/84

Abstract: Techniques are provided for mirroring objects between object stores hosted by cloud providers that have different data layout requirements. An object may be stored within a first object store that supports a fix offset format where uncompressed data is stored according to fixed offsets and boundaries within fixed size objects. A mirroring operation may be used to mirror the object to a second object store that supports a unified object format where compressed data can be stored at non-fixed offsets and boundaries within variable sized objects. The mirroring operation selects a compression algorithm and compresses the object on the fly to create a mirrored object having the unified object format. The mirrored object, populated with the compressed data and slot header metadata comprising compression information for how to locate and decompress the data in the mirrored object, is stored into the second object store.

公开(公告)号：US20230333768A1

公开(公告)日：2023-10-19

申请号：US18186685

申请日：2023-03-20

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

CPC classification number: G06F3/065 ,  G06F3/0685 ,  G06F3/0619 ,  G06F3/0644 ,  G06F3/0647 ,  G06F3/0652 ,  G06F3/0683 ,  G06F3/0617

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.