公开(公告)号：US20240311032A1

公开(公告)日：2024-09-19

申请号：US18676887

申请日：2024-05-29

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 a 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：US20230367677A1

公开(公告)日：2023-11-16

申请号：US18360221

申请日：2023-07-27

Applicant: NetApp, Inc.

Inventor： Sangramsinh Pandurang Pawar ,  Per Olov Wahlstrom ,  William Derby Dallas ,  Joseph Brown, JR. ,  Houze Xu ,  John David McA'Nulty

IPC: G06F11/14 ,  G06F9/4401

CPC classification number: G06F11/1451 ,  G06F9/4411 ,  G06F11/1471 ,  G06F11/1456

Abstract: Systems and methods for making use of non-persistent storage as the journaling storage media for a virtual storage system are provided. According to one embodiment, in order to meet the needs of Extreme Low Latency Workloads while also seeking to provide predictable performance and the lowest possible latency, ephemeral storage of the virtual storage system is used to preserve state information (e.g., in the form of boot arguments and an operation log journal) across a host failure recovery scenario in which the virtual storage system is expected to be redeployed within a compute instance brought up by a cloud environment of a hyperscaler on the same host, thereby providing improved data durability (fewer host failure scenarios that result in lost data) as compared to the use of ephemeral memory of the compute instance and lower write latency than the use of persistent storage provided by the cloud environment.

公开(公告)号：US20240362056A1

公开(公告)日：2024-10-31

申请号：US18309148

申请日：2023-04-28

Applicant: NetApp, Inc.

Inventor： Joseph Brown, JR. ,  Javier Tsuyoshi Takimoto ,  Sangramsinh Pandurang Pawar ,  Michael Scott Ryan

IPC: G06F9/455

CPC classification number: G06F9/45558 ,  G06F2009/45579 ,  G06F2009/45583

Abstract: Systems and methods for sharing a namespace of an ephemeral storage device by multiple consumers are provided. In an example, an NVMe driver of a virtual storage system deployed within a compute instance of a cloud environment facilitates sharing of the namespace by exposing an API through which the multiple consumers access an ephemeral storage device associated with the compute instance. During initialization processing performed by each consumer, for example, during boot processing of the virtual storage system, the consumers may share the namespace by reserving for their own use respective partitions within the namespace via the API and thereafter restrict their usage of the namespace to their respective partitions, thereby retaining the functionality provided by the multiple consumers when the host on which the compute instance is deployed has fewer ephemeral storage devices than consumers that rely on the availability of vNVRAM backed by ephemeral storage.

公开(公告)号：US20240313977A1

公开(公告)日：2024-09-19

申请号：US18184239

申请日：2023-03-15

Applicant: NetApp, Inc.

Inventor： Nan Li ,  James Silva ,  Sangramsinh Pandurang Pawar ,  Jing Zhang

IPC: H04L9/32 ,  G06F8/61 ,  G06F8/71 ,  H04L9/30

CPC classification number: H04L9/3247 ,  G06F8/63 ,  G06F8/71 ,  H04L9/30

Abstract: Systems and methods for verifying an executable portion of a published cloud image represents an unaltered version of an executable portion of a corresponding original cloud image are provided. In one embodiment, modification of a predefined portion of a cloud image by a cloud provider prior to its publication via a marketplace of the cloud provider is proactively addressed as part of (i) an automated signing process performed by a software publisher on the original cloud image prior to delivery to the cloud provider and (ii) a corresponding background verification process performed on the published cloud image on behalf of users by a management platform. The signing and verification processes are operable to exclude the predefined portion when creating their respective digests, thereby allowing the signed digest created prior to the modification to remain useful as part of a subsequent digest comparison performed by the verification process.

公开(公告)号：US12189972B2

公开(公告)日：2025-01-07

申请号：US18309162

申请日：2023-04-28

Applicant: NetApp, Inc.

Inventor： Joseph Brown, Jr. ,  Javier Tsuyoshi Takimoto ,  Sangramsinh Pandurang Pawar ,  Michael Scott Ryan

IPC: G06F3/06

Abstract: Systems and methods for multiple device consumption of shared namespaces of ephemeral storage devices by a consumer of a virtual storage system are provided. In an example, multiple namespaces of respective ephemeral storage devices are shared among multiple of consumers of a virtual storage system by creating multiple partitions within each of the namespaces for use by respective consumers of the multiple consumers. Corresponding partitions of respective shared namespace may then be treated as a stripe set to facilitate multiple device consumption for a subsystem (e.g., operation log journaling) of the virtual storage system by striping data associated with input/output (I/O) requests of a consumer (e.g., a journaling driver) across one or more stripe units of one or more stripes within the stripe set.

公开(公告)号：US20230342089A1

公开(公告)日：2023-10-26

申请号：US17729891

申请日：2022-04-26

Applicant: NetApp, Inc.

Inventor： Sangramsinh Pandurang Pawar ,  Vijay Chandra Hanchatey ,  Per Olov Wahlstrom ,  William Derby Dallas

IPC: G06F3/06 ,  G06F9/455

CPC classification number: G06F3/0665 ,  G06F3/061 ,  G06F3/068 ,  G06F9/45558 ,  G06F2009/45579

Abstract: Systems and methods for facilitating performance of data tiering by detecting and persisting types of backing storage of cloud volumes that are available for use by a virtual storage system are provided. In one example, during a boot phase of the virtual storage system within a compute instance of a cloud environment, information regarding a type of backing storage for each of multiple storage devices associated with the compute instance that is not available via hypervisor APIs is obtained via an API exposed by the cloud environment. The multiple storage devices may then be initialized to facilitate subsequent use of a subset thereof in connection with performing data tiering by persisting information indicative of the type of backing storage for the storage device within a reserved header region on each storage device.

公开(公告)号：US20230115438A1

公开(公告)日：2023-04-13

申请号：US17713040

申请日：2022-04-04

Applicant: NetApp Inc.

Inventor： John Ethan DeGraaf ,  Sangramsinh Pandurang Pawar ,  Rajesh Rajaraman

IPC: G06F11/14 ,  G06F9/54

Abstract: Techniques are provided for backing up and restoring a file system or storage virtual machine located within a remote object store. A specification is parsed to identify resources associated with and including a primary resource hosted within a remote object store and to identify REST API endpoints of the resources. GET operations targeting the REST API endpoints of the resources are performed to retrieve the resources and properties of the resources. A link relationship specification is parsed to identify links corresponding to dependencies amongst the resources. A backup of the primary resource is generated to include the resources, the properties of the resources, and dependency information derived from the links. The backup can be used to restore the primary resource to the remote object store in manner that preserves the dependencies amongst the resources.

公开(公告)号：US20240361939A1

公开(公告)日：2024-10-31

申请号：US18309162

申请日：2023-04-28

Applicant: NetApp, Inc.

Inventor： Joseph Brown, JR. ,  Javier Tsuyoshi Takimoto ,  Sangramsinh Pandurang Pawar ,  Michael Scott Ryan

IPC: G06F3/06

CPC classification number: G06F3/0644 ,  G06F3/061 ,  G06F3/0679

Abstract: Systems and methods for multiple device consumption of shared namespaces of ephemeral storage devices by a consumer of a virtual storage system are provided. In an example, multiple namespaces of respective ephemeral storage devices are shared among multiple of consumers of a virtual storage system by creating multiple partitions within each of the namespaces for use by respective consumers of the multiple consumers. Corresponding partitions of respective shared namespace may then be treated as a stripe set to facilitate multiple device consumption for a subsystem (e.g., operation log journaling) of the virtual storage system by striping data associated with input/output (I/O) requests of a consumer (e.g., a journaling driver) across one or more stripe units of one or more stripes within the stripe set.

公开(公告)号：US12001294B2

公开(公告)日：2024-06-04

申请号：US17713040

申请日：2022-04-04

Applicant: NetApp Inc.

Inventor： John Ethan DeGraaf ,  Sangramsinh Pandurang Pawar ,  Rajesh Rajaraman

IPC: G06F11/14 ,  G06F9/54

CPC classification number: G06F11/1464 ,  G06F9/547 ,  G06F11/1469 ,  G06F2201/84

Abstract: Techniques are provided for backing up and restoring a file system or storage virtual machine located within a remote object store. A specification is parsed to identify resources associated with and including a primary resource hosted within a remote object store and to identify REST API endpoints of the resources. GET operations targeting the REST API endpoints of the resources are performed to retrieve the resources and properties of the resources. A link relationship specification is parsed to identify links corresponding to dependencies amongst the resources. A backup of the primary resource is generated to include the resources, the properties of the resources, and dependency information derived from the links. The backup can be used to restore the primary resource to the remote object store in manner that preserves the dependencies amongst the resources.

公开(公告)号：US20230273862A1

公开(公告)日：2023-08-31

申请号：US17703307

申请日：2022-03-24

Applicant: NetApp, Inc.

Inventor： Sangramsinh Pandurang Pawar ,  Per Olov Wahlstrom ,  William Derby Dallas ,  Joseph Brown, JR. ,  Houze Xu ,  John David McA'Nulty ,  Rajesh Rajaraman

IPC: G06F11/14 ,  G06F9/4401

CPC classification number: G06F11/1451 ,  G06F11/1456 ,  G06F11/1471 ,  G06F9/4411

Abstract: Systems and methods for making use of non-persistent storage as the journaling storage media for a virtual storage system are provided. According to one embodiment, in order to meet the needs of Extreme Low Latency Workloads while also seeking to provide predictable performance and the lowest possible latency, ephemeral storage of the virtual storage system is used to preserve state information (e.g., in the form of boot arguments and an operation log journal) across a host failure recovery scenario in which the virtual storage system is expected to be redeployed within a compute instance brought up by a cloud environment of a hyperscaler on the same host, thereby providing improved data durability (fewer host failure scenarios that result in lost data) as compared to the use of ephemeral memory of the compute instance and lower write latency than the use of persistent storage provided by the cloud environment.