公开(公告)号：US12050938B2

公开(公告)日：2024-07-30

申请号：US17107361

申请日：2020-11-30

Applicant: NetApp, Inc.

Inventor： Abhishek Hiregoudar ,  Siu Wu ,  Alma Dimnaku

IPC: G06F9/50 ,  G06F3/06

CPC classification number: G06F9/5083 ,  G06F3/061 ,  G06F3/0631 ,  G06F3/0646 ,  G06F3/0683 ,  G06F9/5011 ,  G06F9/5077 ,  G06F2209/5022 ,  G06F2209/505

Abstract: Systems, methods, and machine-readable media for monitoring a storage system and correcting demand imbalances among nodes in a cluster are disclosed. A performance manager for the storage system may detect performance imbalances that occur over a period of time. When operating below an optimal performance capacity, the manager may cause a volume to be moved from a node with a high load to a node with a lower load to achieve a preventive result. When operating at or near optimal performance capacity, the manager may cause a QOS limit to be imposed to prevent the workload from exceeding the performance capacity, to achieve a proactive result. When operating abnormally, the manager may cause a QOS limit to be imposed to throttle the workload to bring the node back within the optimal performance capacity of the node, to achieve a reactive result. These actions may be performed independently, or in cooperation.

公开(公告)号：US12050540B2

公开(公告)日：2024-07-30

申请号：US18140808

申请日：2023-04-28

Applicant: NetApp, Inc.

Inventor： Abhijeet Gole ,  Ratnesh Gupta ,  Douglas Doucette

IPC: G06F12/10 ,  G06F12/1009

CPC classification number: G06F12/1009 ,  G06F2212/1021 ,  G06F2212/154 ,  G06F2212/214

Abstract: Methods, non-transitory machine-readable media, and computing devices that manage resources between multiple hosts coupled to dual-port solid-state disks (SSDs) are disclosed. With this technology, in-core conventional namespace (CNS) and zoned namespace (ZNS) mapping tables are synchronized by a host flash translation layer with on-disk CNS and ZNS mapping tables, respectively. An entry in one of the in-core CNS or ZNS mapping tables is identified based on whether a received storage operation is directed to a CNS or a ZNS of the dual-port SSD. The entry is further identified based on a logical address extracted from the storage operation. The storage operation is serviced using a translation in the identified entry for the logical address, when the storage operation is directed to the CNS, or a zone identifier in the identified entry for a zone of the ZNS, when the storage operation is directed to the ZNS.

公开(公告)号：US12045489B2

公开(公告)日：2024-07-23

申请号：US18060367

申请日：2022-11-30

Applicant: NetApp, Inc.

Inventor： Sangramsinh Pandurang Pawar ,  Bhoovaraghan Subramanian ,  William Derby Dallas ,  Sowkoor Sunad Bhandary ,  Rajesh Rajarman ,  FNU Sahasranshu

IPC: G06F3/06

CPC classification number: G06F3/0646 ,  G06F3/0604 ,  G06F3/067

Abstract: Systems and methods for performing a fast resynchronization of a mirrored aggregate of a distributed storage system using disk-level cloning are provided. According to one embodiment, responsive to a failure of a disk of a plex of the mirrored aggregate utilized by a high-availability (HA) pair of nodes of a distributed storage system, disk-level clones of the disks of the healthy plex may be created external to the distributed storage system and attached to the degraded HA partner node. After detection of the cloned disks by the degraded HA partner node, mirror protection may be efficiently re-established by assimilating the cloned disks within the failed plex and then resynchronizing the mirrored aggregate by performing a level-1 resync of the failed plex with the healthy plex based on a base file system snapshot of the healthy plex. In this manner, a more time-consuming level-0 resync may be avoided.

公开(公告)号：US12038817B2

公开(公告)日：2024-07-16

申请号：US17562401

申请日：2021-12-27

Applicant: NetApp, Inc.

Inventor： Brian Naylor

IPC: G06F11/20 ,  G06F12/0815

CPC classification number: G06F11/2094 ,  G06F12/0815 ,  G06F2201/805 ,  G06F2201/82 ,  G06F2201/84 ,  G06F2212/1032 ,  G06F2212/608

Abstract: Methods, non-transitory machine readable media, and computing devices that facilitate cache rewarming in a failover domain are disclosed. With this technology, a tag is inserted into a local tagstore. The tag includes a location of data in a cache hosted by a failover computing device and is retrieved from a snapshot of a remote tagstore for the cache. An invalidation log for an aggregate received from the failover computing device is replayed subsequent to mounting a filesystem that is associated with the aggregate and comprises the data. The data is retrieved from the cache following determination of the location from the tag in the local tagstore in order to service a received storage operation associated with the data. Takeover nodes do not have to wait for a cache to repopulate organically, and can leverage the contents of a cache of a failover node to thereby improve performance following takeover events.

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：US20240220136A1

公开(公告)日：2024-07-04

申请号：US18146526

申请日：2022-12-27

Applicant: NetApp, Inc.

Inventor： Mrinal K. Bhattacharjee ,  Sreenath Korrakuti ,  Sateesh Kumar Pola

IPC: G06F3/06

CPC classification number: G06F3/0626 ,  G06F3/0617 ,  G06F3/0644 ,  G06F3/0647 ,  G06F3/0689

Abstract: Systems and methods for reducing the provisioned storage capacity of a disk or aggregate of disks of a storage appliance while the storage appliance continues to serve clients are provided. According to one embodiment, the size of the aggregate may be reduced by shrinking the file system of the storage appliance and removing a selected disk from the aggregate. When an identified shrink region includes the entire addressable PVBN space of the selected disk, the file system may be shrunk by relocating valid data from the selected disk elsewhere within the aggregate. After the valid data is relocated, the selected disk may be removed from the aggregate, thereby reducing the provisioned storage capacity of the aggregate by the size of the selected disk.

公开(公告)号：US20240220106A1

公开(公告)日：2024-07-04

申请号：US18607651

申请日：2024-03-18

Applicant: NetApp, Inc.

Inventor： Manan Dahyabhai Patel ,  Wei Sun

IPC: G06F3/06

CPC classification number: G06F3/0608 ,  G06F3/0652 ,  G06F3/067

Abstract: Techniques are provided for implementing garbage collection and bin synchronization for a distributed storage architecture of worker nodes managing distributed storage composed of bins of blocks. As the distributed storage architecture scales out to accommodate more storage and worker nodes, garbage collection used to free unused blocks becomes unmanageable and slow. Accordingly garbage collection is improved by utilizing heuristics to dynamically speed up or down garbage collection and set sizes for subsets of a bin to process instead of the entire bin. This ensures that garbage collection does not use stale information about what blocks are in-use, and ensures garbage collection does not unduly impact client I/O processing or conversely falls behind on garbage collection. Garbage collection can be incorporated into a bin sync process to improve the efficiency of the bin sync process so that unused blocks are not needlessly copied by the bin sync process.

公开(公告)号：US20240214348A1

公开(公告)日：2024-06-27

申请号：US18303359

申请日：2023-04-19

Applicant: NetApp, Inc.

Inventor： Azzedine Benameur ,  Yun Shen

IPC: H04L9/40 ,  G06F9/54

CPC classification number: H04L63/0236 ,  G06F9/547 ,  H04L63/1425

Abstract: Systems and methods for enhancing API security by identifying anomalous activities in a cloud environment are provided. In one embodiment, the lack of awareness of an external API with respect to how calls to the external API may affect a cluster of a container orchestration platform is addressed. For instance, the views of the external and internal APIs may be combined to achieve better API security by correlating external API calls with undesirable behavior or other anomalies arising in the internal API. Responsive to identifying such undesirable behavior, information (e.g., a host, a source IP, a user, a specific payload) associated with the offending external API call may be added to a network security feature (e.g., a deny list, an IPS, or a WAF) utilized by the external API to facilitate performance of enhanced filtering of subsequent external API calls by the external API on behalf of the internal API.

公开(公告)号：US12021851B2

公开(公告)日：2024-06-25

申请号：US17517460

申请日：2021-11-02

Applicant: NetApp, Inc.

Inventor： Jin Zhang ,  Surajpal S. Sandhu ,  Matthew Martin Houston

IPC: H04L9/40 ,  H04L67/148

CPC classification number: H04L63/0485 ,  H04L63/061 ,  H04L63/20 ,  H04L67/148

Abstract: A system is described. The system includes a processing resource and a non-transitory computer-readable medium, coupled to the processing resource, having stored therein instructions that when executed by the processing resource cause the processing resource to detect an unrecognized Internet Protocol Security (IPsec) packet associated with an IP address at a first node within a cluster, retrieve one or more selector fields from the IPsec packet, query of a security policy database to determine whether a destination IP address included in the one or more retrieved selector fields matches one or more matching outbound IPsec policies associated with a destination IP address, determine whether a matching outbound IPsec policy includes an IPsec policy associated with the destination address entry and establish the first IPsec SA communication session between the first node and the client based on the outbound IPsec policy.

公开(公告)号：US20240193055A1

公开(公告)日：2024-06-13

申请号：US18112993

申请日：2023-02-22

Applicant: NETAPP, INC.

Inventor： Rajaram Balakrishnan ,  Balamurali Palaiah ,  Jayakrishnan Ramakrishna Pillai ,  Kiran Joseph D Almeida ,  Negi Shardul Singh ,  Vineeth Karinta

IPC: G06F11/14

CPC classification number: G06F11/1484 ,  G06F11/1451 ,  G06F11/1469

Abstract: Methods and systems for protecting virtual machines is provided. One method includes discovering, by a first plugin, from a virtual machine (“VM”) management system, a plurality of VMs that share a logical data store having a plurality of virtual volumes used for storing data for the VMs by a storage system registered with the first plugin and a virtual appliance of the VM management system; obtaining, by the first plugin, from the virtual appliance, metadata and storage layout of a set of virtual volumes used by a VM to store data; using a first application programming interface (API), by the first plugin, for identifying a first set of storage volumes used by the storage system to store data for the set of virtual volumes; and creating, by the first plugin, a consistency group (“CG”) having the identified the first set of storage volumes and generating a snapshot of the CG.