公开(公告)号：US11762814B2

公开(公告)日：2023-09-19

申请号：US17486027

申请日：2021-09-27

Applicant: NetApp Inc.

Inventor： Akhil Kaushik ,  Gaurav Verma

IPC: G06F7/00 ,  G06F16/178 ,  G06F9/54

CPC classification number: G06F16/178 ,  G06F9/54

Abstract: Techniques are provided for synchronous replication for synchronous mirror copy guarantee. A file system dependent technique for synchronous mirror copy guarantee is provided by overriding default behavior of a persistent fence so that the persistent fence is activated to block operations targeting a storage object having a synchronous replication relationship based upon the synchronous replication relationship being out of sync. The default behavior of the persistent fence is overridden to allow operations to be executed upon the storage object based upon the synchronous replication relationship being in sync. A file system independent technique for synchronous mirror copy guarantee is provided by intercepting operations before the operations are received by a file system. The operations are selectively forwarded to the file system or not based upon a state of a synchronous replication relationship.

公开(公告)号：US20230289258A1

公开(公告)日：2023-09-14

申请号：US18165077

申请日：2023-02-06

Applicant: NetApp Inc.

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

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

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：US20230289076A1

公开(公告)日：2023-09-14

申请号：US18320788

申请日：2023-05-19

Applicant: NetApp, Inc.

Inventor： Murali Subramanian ,  Akhil Kaushik ,  Anoop Vijayan ,  Omprakash Khandelwal ,  Arun Kumar Selvam

IPC: G06F3/06

CPC classification number: G06F3/0631 ,  G06F3/0604 ,  G06F3/067

Abstract: Systems and methods are described for efficiently performing various operations at the granularity of a consistency group (CG) within a cross-site storage solution. An example of one of the various operations includes an independent and parallel resynchronization approach that independently brings individual volumes of a CG to a steady state of in-synchronization (InSync), thereby contributing to scalability of CGs by supporting CGs having a large number of member volumes without requiring a change to the resynchronization process. Another example includes preserving dependent write-order consistency when a remote mirror copy goes out-of-synchronization (OOS) for any reason by driving all member volumes OOS responsive to any member volume becoming OOS. Yet another example includes independent creation of snapshots by member volumes to support efficient and on-demand creation by an application of a common snapshots of all or a subset of peered member volumes of a CG with which the application is associated.

公开(公告)号：US11755736B1

公开(公告)日：2023-09-12

申请号：US17935689

申请日：2022-09-27

Applicant: NetApp, Inc.

Inventor： Jagadish Vasudeva ,  Prateeksha Varshney ,  Priya Sehgal ,  Mrinal K. Bhattacharjee ,  Amit Valjibhai Panara ,  Siddhartha Nandi

IPC: G06F21/56 ,  G06F21/54 ,  G06F21/60 ,  G06F21/57

CPC classification number: G06F21/566 ,  G06F21/54 ,  G06F21/568 ,  G06F21/577 ,  G06F21/602

Abstract: A method, computing device, and non-transitory machine-readable medium for detecting malware attacks and mitigating data loss. In various embodiments, an agent is implemented in the operating system of a storage node to provide protection at the bottommost level in a data write path. The agent intercepts write requests and observes file events over time to detect anomalous behavior. For example, the agent may monitor incoming write requests and, when an incoming write request is detected, determine whether the file is associated with a malware attack risk based on an analysis of an encryption state of data in the file.

公开(公告)号：US11740798B2

公开(公告)日：2023-08-29

申请号：US17650917

申请日：2022-02-14

Applicant: NETAPP, INC.

Inventor： Nir Nossenson ,  Kai Niebergall ,  Francisco Jose Assis Rosa ,  John Jason Sprague ,  Omri Kessel

IPC: G06F3/06

CPC classification number: G06F3/0613 ,  G06F3/0604 ,  G06F3/067 ,  G06F3/0635 ,  G06F3/0644 ,  G06F3/0659

Abstract: Methods and systems for a networked storage system are provided. One method includes predicting an IOPS limit for a plurality of storage pools based on a maximum allowed latency of each storage pool, the maximum allowed latency determined from a relationship between the retrieved latency and a total number of IOPS from a resource data structure; identifying a storage pool whose utilization has reached a threshold value, the utilization based on a total number of IOPS directed towards the storage pool and a predicted IOPS limit; detecting a bully workload based on a numerical value determined from a total number of IOPS issued by the bully workload for the storage pool and a rising step function; and implementing a corrective action to reduce an impact of the bully workload on a victim workload.

公开(公告)号：US11728827B2

公开(公告)日：2023-08-15

申请号：US17844339

申请日：2022-06-20

Applicant: NetApp Inc.

Inventor： Roopesh Chuggani ,  Rahul Thapliyal

IPC: H03M7/00 ,  H03M7/30 ,  G06F3/06

CPC classification number: H03M7/6011 ,  G06F3/064 ,  G06F3/067 ,  G06F3/0608 ,  G06F3/0689 ,  H03M7/6005

Abstract: Techniques are provided for implementing additional compression for existing compressed data. Format information stored within a data block is evaluated to determine whether the data block is compressed or uncompressed. In response to the data block being compressed according to a first compression format, the data block is decompressed using the format information. The data block is compressed with one or more other data blocks to create compressed data having a second compression format different than the first compression format.

公开(公告)号：US11726696B2

公开(公告)日：2023-08-15

申请号：US17587710

申请日：2022-01-28

Applicant: NetApp Inc.

Inventor： Jagavar Nehra ,  Roopesh Chuggani ,  Abhisar ,  Sumith Makam

IPC: G06F3/06 ,  G06F11/14

CPC classification number: G06F3/065 ,  G06F3/067 ,  G06F3/0619 ,  G06F11/1469 ,  G06F2201/84

Abstract: Techniques are provided for caching data during an on-demand restore using a cloud block map. A client may be provided with access to an on-demand volume during a restore process that copies backup data from a snapshot within a remote object store to the on-demand volume stored within local storage. In response to receiving a request from the client for a block of the backup data not yet restored from the snapshot to the on-demand volume, the block may be retrieved from the snapshot in the remote object store. The block may be cached within a cloud block map stored within the local storage as a cached block. The client may be provided with access to the cached block.

公开(公告)号：US11720525B2

公开(公告)日：2023-08-08

申请号：US17389395

申请日：2021-07-30

Applicant: NetApp Inc.

Inventor： Atul Ramesh Pandit ,  Tijin George ,  Avanthi Rajan ,  Anitha Ganesha

IPC: G06F16/11 ,  G06F11/14

CPC classification number: G06F16/128 ,  G06F11/1458

Abstract: Techniques are provided for tiering snapshots to archival storage in remote object stores. A restore time metric, indicating that objects comprising snapshot data of snapshots created within a threshold timespan are to be available within a storage tier of a remote object store for performing restore operations, may be identified. A scanner may be executed to evaluate snapshots using the restore time metric to identify a set of candidate snapshots for archival from the storage tier to an archival storage tier of the remote object store. For each candidate snapshot within the set of candidate snapshots, the scanner may evaluate metadata associated with the candidate snapshot to identity one or more objects eligible for archival from the storage tier to the archival storage tier, and may archive the one or more objects from the storage tier to the archival storage tier.

公开(公告)号：US20230244392A1

公开(公告)日：2023-08-03

申请号：US17587175

申请日：2022-01-28

Applicant: NetApp Inc.

Inventor： Priyanka Jain ,  Srikanth Venkatesh Goutham ,  Dilip Krishnan ,  Suruchi Kumari ,  Rama Kant Pathak ,  Arun Pandey ,  Venkata Manikanta Reddy Mopuri

IPC: G06F3/06

CPC classification number: G06F3/0631 ,  G06F3/067 ,  G06F3/0613 ,  G06F3/0617 ,  G06F3/0659 ,  G06F3/0664

Abstract: Techniques are provided for input/output operations per second (lOPS) and throughput monitoring for dynamic and/or optimal resource allocation. These techniques provide automated monitoring of resources, such as memory and processor utilization by a container accessing a volume. The automated monitoring is performed in order to generate and execute intelligent recommendations for improved resource utilization. Resource allocations can be scaled up to meet l/O load demand and satisfy service level agreements (SLAs). Resource allocations can be scaled down or adjusted to conserve resources, such as by consolidating containers or pods hosted in multiple virtual machines into a single virtual machine and decommissioning virtual machines no longer hosting containers or pods.

公开(公告)号：US11714783B2

公开(公告)日：2023-08-01

申请号：US17408532

申请日：2021-08-23

Applicant: NetApp Inc.

Inventor： Sisir Shekhar ,  Rakesh Bhargava M R ,  Krishna Murthy Chandraiah Setty Narasingarayanapeta

IPC: G06F16/00 ,  G06F16/14 ,  G06F16/11 ,  G06F16/16

CPC classification number: G06F16/148 ,  G06F16/113 ,  G06F16/168

Abstract: A request is received to retrieve at least a portion of a file from a compressed data archived image stored in a backup storage device. The compressed data archived image comprises a backup of a file system having a number of directories and a number of files. The compressed data archived image comprises a file that includes a compression of the number of files. An address of the at least the portion of the file within the compressed data archived image is determined. The at least the portion of the file is retrieved at the address in the compressed data archived image, without decompressing the compressed data archived image.