公开(公告)号：US11363042B2

公开(公告)日：2022-06-14

申请号：US16297513

申请日：2019-03-08

Applicant: NETAPP, INC.

Inventor： Omri Kessel ,  Shailaja Kamila ,  Pratyush Uppuluri ,  Jayanta Basak

IPC: H04L9/40

Abstract: A system, method, and machine-readable storage medium for detecting an anomaly are provided. In some embodiments, the method includes computing an access rate of a set of entities for each user of a plurality of users. The access rate may refer to data operations for the set of entities stored by a storage system. The method also includes normalizing the access rates for a subset of the plurality of users, the subset belonging to a community. The method further includes determining whether a normalized access rate from among the access rates satisfies a threshold. The method also includes detecting an anomaly in response to a determination that the normalized access rate satisfies the threshold.

公开(公告)号：US11354049B2

公开(公告)日：2022-06-07

申请号：US16679914

申请日：2019-11-11

Applicant: NetApp Inc.

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

IPC: G06F3/06

Abstract: 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.

公开(公告)号：US11340804B2

公开(公告)日：2022-05-24

申请号：US16911425

申请日：2020-06-25

Applicant: NetApp Inc.

Inventor： Abdul Basit ,  Ananthan Subramanian ,  Ram Kesavan ,  Matthew Fontaine Curtis-Maury

IPC: G06F3/06

Abstract: Techniques are provided for block allocation for persistent memory during aggregate transition. In a high availability pair including first and second nodes, the first node makes a determination that control of a first aggregate is to transition from the first node to the second node. A portion of available free storage space is allocated from a first persistent memory of the first node as allocated pages within the first persistent memory. Metadata information for the allocated pages is updated with an identifier of the first aggregate to create updated metadata information reserving the allocated pages for the first aggregate. The updated metadata information is mirrored to the second node, so that the second node also reserves those pages. Control of the first aggregate is transitioned to the second node. As a result, the nodes do not attempt allocating the same free pages to different aggregates during a transition.

公开(公告)号：US11327857B2

公开(公告)日：2022-05-10

申请号：US15945178

申请日：2018-04-04

Applicant: NetApp Inc.

Inventor： Rakesh Bhargava M R ,  Krishna Murthy Chandraiah setty Narasingarayanapeta

IPC: G06F11/20 ,  G06F16/178 ,  G06F16/14 ,  G06F16/16 ,  G06F16/182 ,  G06F16/901

Abstract: Techniques are provided for replay of metadata and data operations. During initial execution of operations, identifiers of objects modified by the execution of each operation are identified and stored in association with the operations. When the operations are to be replayed (e.g., executed again, such as part of a replication operation or as part of flushing content from a cache to persistent storage), the identifiers are evaluated to determine which operations are independent with respect to one another and which operations are dependent with respect to one another. In this way, independent operations are executed in parallel and dependent operations are executed serially with respect to the operations from the dependent operations depend.

公开(公告)号：US20220138051A1

公开(公告)日：2022-05-05

申请号：US17130243

申请日：2020-12-22

Applicant: NetApp Inc.

Inventor： Sharankumar Yelheri ,  Atul Ramesh Pandit ,  Tijin George

IPC: G06F11/14

Abstract: Techniques are provided for implementing data requests associated with objects of an object store. A data connector component may be instantiated as a container for processing data requests associated with backup data stored within objects of an object store. The data connector component may evaluate the object store to identify snapshots stored as the backup data within the objects of the object store according to an object format. The data connector component may provide a client device with access to backup data of the snapshots.

公开(公告)号：US20220138048A1

公开(公告)日：2022-05-05

申请号：US17155138

申请日：2021-01-22

Applicant: NetApp Inc.

Inventor： Sharankumar Yelheri ,  Sanhita Praveen Dhavale ,  Atul Ramesh Pandit ,  Ravindra Ramachandraiah Kuramkote ,  Tijin George ,  Kiyoshi James Komatsu

IPC: G06F11/14 ,  G06F16/27 ,  G06F16/22 ,  G06F9/54

Abstract: Techniques are provided for implementing management requests associated with objects of an object store. A data connector component may be instantiated as a container for processing management requests associated with backup data stored within an object store as an object according to an object format. A management request associated with the backup data may be received by the data connector component. A structure associated with the object having the object format may be traversed by the data connector component to identify the backup data. The data connector component may be implemented upon the backup data stored within the object.

公开(公告)号：US20220131742A1

公开(公告)日：2022-04-28

申请号：US17078726

申请日：2020-10-23

Applicant: NetApp, Inc.

Inventor： Charles Randall ,  Michael Keith Nunez

IPC: H04L12/24 ,  H04L12/931

Abstract: A management system is described. The management system includes an interface coupled to a plurality of infrastructure appliances and one or more processors to monitor each of the plurality of infrastructure appliances, detect a malfunction at a first of the infrastructure appliances, and transmit a display message to the first infrastructure appliance including a message to be displayed at one or more activity light indicators at the first infrastructure appliance.

公开(公告)号：US20220124149A1

公开(公告)日：2022-04-21

申请号：US17567182

申请日：2022-01-03

Applicant: NetApp Inc.

Inventor： Paul Anthony Powell ,  Akhil Kaushik ,  Srikumar Natarajan ,  Ching-Yuk Paul Ngan

IPC: H04L67/1095 ,  G06F16/178 ,  G06F16/182 ,  G06F3/06 ,  G06F11/20 ,  H04L67/1097

Abstract: One or more techniques and/or computing devices are provided for implementing synchronous replication. For example, a synchronous replication relationship may be established between a first storage controller hosting local storage and a second storage controller hosting remote storage (e.g., replication may be specified at a file, logical unit number (LUN), or any other level of granularity). Data operations and offloaded operations may be implemented in parallel upon the local storage and the remote storage. Error handling operations may be implemented upon the local storage and implement in parallel as a best effort on the remote storage, and a reconciliation may be performed to identify any data divergence from the best effort parallel implementation. Storage area network (SAN) operations may be implemented upon the local storage, and upon local completion may be remotely implemented upon the remote storage.

公开(公告)号：US20220121364A1

公开(公告)日：2022-04-21

申请号：US17646603

申请日：2021-12-30

Applicant: NetApp, Inc.

Inventor： Raymond Yu Shun Mak ,  Aditya Kalyanakrishnan ,  Song Guen Yoon ,  Emalayan Vairavanathan ,  Dheeraj Sangamkar ,  Chia-Chen Chu

IPC: G06F3/06 ,  G06F16/16

Abstract: A system, method, and machine-readable storage medium for analyzing a state of a data object are provided. In some embodiments, the method includes receiving, at a storage device, a metadata request for the data object from a client. The data object is composed of a plurality of segments. The method also includes selecting a subset of the plurality of segments and obtaining a segment state for each segment of the subset. Each segment state indicates whether the respective segment is accessible via a backing store. The method further includes determining a most restrictive state of the one or more segment states and sending state information to the client in response to the metadata request, the state information being derived from the most restrictive state.

公开(公告)号：US11301450B2

公开(公告)日：2022-04-12

申请号：US16804170

申请日：2020-02-28

Applicant: NetApp Inc.

Inventor： Krishna Murthy Chandraiah Setty Narasingarayanapeta ,  Preetham Kudgi Shenoy

IPC: G06F16/23 ,  G06F16/27

Abstract: Techniques are provided for maintaining timestamp parity during a transition replay phase to a synchronous state. During a transition logging phase where metadata operations executed by a primary node are logged into a metadata log and regions modified by data operations executed by the primary node are tracked within a dirty region log, a close stream operation to close a stream associated with a basefile of the primary node is identified. A determination is made as to whether the dirty region log comprises an entry for the stream indicating that a write data operation previously modified the stream. In an example, in response to the dirty region log comprising the entry, an indicator is set to specify that the stream was deleted by the close stream operation. In another example, a modify timestamp of the basefile is logged into the metadata log for subsequent replication to the secondary node.