公开(公告)号：US20240232080A1

公开(公告)日：2024-07-11

申请号：US18615014

申请日：2024-03-25

Applicant: NetApp, Inc.

Inventor： Sudheer Kumar Vavilapalli ,  Asif Imtiyaz Pathan ,  Parag Sarfare ,  Nikhil Mattankot ,  Stephen Wu ,  Amit Borase

IPC: G06F12/0802 ,  G06F3/06

CPC classification number: G06F12/0802 ,  G06F3/0619 ,  G06F3/0653 ,  G06F3/0673 ,  G06F2212/60

Abstract: Techniques are provided for implementing a persistent key-value store for caching client data, journaling, and/or crash recovery. The persistent key-value store may be hosted as a primary cache that provides read and write access to key-value record pairs stored within the persistent key-value store. The key-value record pairs are stored within multiple chains in the persistent key-value store. Journaling is provided for the persistent key-value store such that incoming key-value record pairs are stored within active chains, and data within frozen chains is written in a distributed manner across distributed storage of a distributed cluster of nodes. If there is a failure within the distributed cluster of nodes, then the persistent key-value store may be reconstructed and used for crash recovery.

公开(公告)号：US20240012715A1

公开(公告)日：2024-01-11

申请号：US18473423

申请日：2023-09-25

Applicant: NetApp Inc.

Inventor： Stephen Wu ,  Prathamesh Deshpande ,  Manan Patel

IPC: G06F3/06 ,  G06F11/07

CPC classification number: G06F3/065 ,  G06F3/0619 ,  G06F3/0683 ,  G06F11/0757

Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.

公开(公告)号：US20190286529A1

公开(公告)日：2019-09-19

申请号：US16429475

申请日：2019-06-03

Applicant: NetApp Inc.

Inventor： Stephen Wu ,  Prathamesh Deshpande ,  Manan Patel

IPC: G06F11/14 ,  G06F11/07 ,  G06F3/06

Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.

公开(公告)号：US20190286528A1

公开(公告)日：2019-09-19

申请号：US16429463

申请日：2019-06-03

Applicant: NetApp Inc.

Inventor： Stephen Wu ,  Prathamesh Deshpande ,  Manan Patel

IPC: G06F11/14 ,  G06F11/07 ,  G06F3/06

Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.

公开(公告)号：US11960453B2

公开(公告)日：2024-04-16

申请号：US18176028

申请日：2023-02-28

Applicant: NetApp Inc.

Inventor： Mardiros Z. Chakalian ,  Amber Palekar ,  Szu-Wen Kuo ,  Stephen Wu

IPC: G06F17/00 ,  G06F16/182

CPC classification number: G06F16/1827

Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.

公开(公告)号：US11768737B2

公开(公告)日：2023-09-26

申请号：US16683502

申请日：2019-11-14

Applicant: NetApp inc.

Inventor： Stephen Wu ,  Prathamesh Deshpande ,  Manan Patel

IPC: G06F11/14 ,  G06F3/06 ,  G06F11/07

CPC classification number: G06F11/1451 ,  G06F3/061 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0619 ,  G06F3/0652 ,  G06F11/07 ,  G06F11/0727 ,  G06F11/0757 ,  G06F11/0793 ,  G06F11/1438 ,  G06F11/1446 ,  G06F11/1464 ,  G06F11/1469 ,  G06F2201/845

Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.

公开(公告)号：US20230195622A1

公开(公告)日：2023-06-22

申请号：US17553930

申请日：2021-12-17

Applicant: NetApp Inc.

Inventor： Sudheer Kumar Vavilapalli ,  Asif Imtiyaz Pathan ,  Parag Sarfare ,  Nikhil Mattankot ,  Stephen Wu ,  Amit Borase

IPC: G06F12/0802 ,  G06F3/06

CPC classification number: G06F12/0802 ,  G06F3/0653 ,  G06F3/0619 ,  G06F3/0673 ,  G06F2212/60

Abstract: Techniques are provided for implementing a persistent key-value store for caching client data, journaling, and/or crash recovery. The persistent key-value store may be hosted as a primary cache that provides read and write access to key-value record pairs stored within the persistent key-value store. The key-value record pairs are stored within multiple chains in the persistent key-value store. Journaling is provided for the persistent key-value store such that incoming key-value record pairs are stored within active chains, and data within frozen chains is written in a distributed manner across distributed storage of a distributed cluster of nodes. If there is a failure within the distributed cluster of nodes, then the persistent key-value store may be reconstructed and used for crash recovery.

公开(公告)号：US11593318B2

公开(公告)日：2023-02-28

申请号：US17100896

申请日：2020-11-22

Applicant: NetApp Inc.

Inventor： Mardiros Z. Chakalian ,  Amber Palekar ,  Szu-Wen Kuo ,  Stephen Wu

IPC: G06F17/00 ,  G06F16/182

Abstract: Asynchronous snapshot invalidation techniques are described. According to various such techniques, an enhanced file handle structure may be defined that includes a snapshot generation ID that is to comprise a value that singularly identifies a snapshot performed at a particular point in time. In some embodiments, when a snapshot ID assigned to that snapshot is reused at a subsequent point in time, a different snapshot generation ID may be assigned to that subsequent snapshot. With respect to an in-core cache, the differing snapshot generation IDs may eliminate unacceptable ambiguity regarding respective file information sets corresponding to the initial and subsequent snapshots sharing the same snapshot ID. As a result, obsolete file information sets may be cleared from the in-core cache asynchronously, enabling improved performance. The embodiments are not limited in this context.

公开(公告)号：US11132262B2

公开(公告)日：2021-09-28

申请号：US16429475

申请日：2019-06-03

Applicant: NetApp Inc.

Inventor： Stephen Wu ,  Prathamesh Deshpande ,  Manan Patel

IPC: G06F11/14 ,  G06F3/06 ,  G06F11/07

Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.

公开(公告)号：US20180032407A1

公开(公告)日：2018-02-01

申请号：US15727754

申请日：2017-10-09

Applicant: NetApp Inc.

Inventor： Stephen Wu ,  Prathamesh Deshpande ,  Manan Patel

IPC: G06F11/14 ,  G06F3/06 ,  G06F11/07

Abstract: An application may store data to a dataset comprising a plurality of volumes stored on a plurality of storage systems. The application may request a dataset image of the dataset, the dataset image comprising a volume image of each volume of the dataset. A dataset image manager operates with a plurality of volume image managers in parallel to produce the dataset image, each volume image manager executing on a storage system. The plurality of volume image managers respond by performing requested operations and sending responses to the dataset image manager in parallel. Each volume image manager on a storage system may manage and produce a volume image for each volume of the dataset stored to the storage system. If a volume image for any volume of the dataset fails, or a timeout period expires, a cleanup procedure is performed to delete any successful volume images.