公开(公告)号：US20150199141A1

公开(公告)日：2015-07-16

申请号：US14531246

申请日：2014-11-03

Applicant: NETAPP, INC.

Inventor： Kevin Faulkner ,  Leon Fairbanks ,  Phil Larson ,  Siu Wu ,  Vinod Vasant Pai ,  Abdul Basit ,  Curtis Hrischuk

IPC: G06F3/06

CPC classification number: G06F3/061 ,  G06F3/0617 ,  G06F3/0653 ,  G06F3/067

Abstract: Methods and systems for inter-cluster storage system monitoring and analysis are provided. The method includes monitoring a non-volatile memory delay center for a first storage cluster having a first node and a second node configured to operate as a first high availability pair, where data for a write request to write data to the first node is also written to the second node as well as to a second cluster having a third node and a fourth node, where the third node and the fourth node are also configured to operate as a second high availability pair to store the data for the write request at one or both of the third and fourth node. The non-volatile memory delay center is used to monitor and detect latency due to any delay caused by a non-volatile memory of the first node used as a write cache.

Abstract translation: 提供了集群间存储系统监控和分析的方法和系统。 该方法包括监视具有第一节点和第二节点的第一存储集群的非易失性存储器延迟中心，第一节点和第二节点被配置为作为第一高可用性对进行操作，其中写入数据到第一节点的写入请求也被写入 到第二节点以及具有第三节点和第四节点的第二集群，其中第三节点和第四节点也被配置为作为第二高可用性对来操作，以将写入请求的数据存储在一个或多个节点 第三和第四节点。 非易失性存储器延迟中心用于监视和检测由于用作写缓存的第一节点的非易失性存储器引起的任何延迟。

公开(公告)号：US20250060881A1

公开(公告)日：2025-02-20

申请号：US18935813

申请日：2024-11-04

Applicant: NetApp, Inc.

Inventor： Abdul Basit ,  Daniel McCarthy ,  Christopher Lee Cason ,  Jian Hu

IPC: G06F3/06

Abstract: Techniques are provided for dynamically implementing quality of service policies for a distributed storage system based upon resources saturation. A quality of service policy is defined for throttling I/O operations received by a node of the distributed storage system based upon whether resources of the node have become saturated. The quality of service policy is dynamically implemented based upon ever changing resource utilization and saturation. Dynamically implementing the quality of service policy improves the ability to efficiently utilize resources of the node compared to conventional static polices that cannot adequately react to such changing considerations and resource utilization/saturation. With conventional static policies, an administrator manually defines a minimum amount of guaranteed resources and/or a maximum resource usage cap that could be set to values that result in inefficient operation and resource starvation. Dynamically implementing the quality of service policy results in more efficient operation and mitigates resource starvation.

公开(公告)号：US11822821B2

公开(公告)日：2023-11-21

申请号：US17536571

申请日：2021-11-29

Applicant: NetApp Inc.

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

IPC: G06F12/00 ,  G06F3/06 ,  G06F11/14

CPC classification number: G06F3/0659 ,  G06F3/067 ,  G06F3/0619 ,  G06F3/0644 ,  G06F3/0653 ,  G06F3/0683 ,  G06F11/1417 ,  G06F11/1464 ,  G06F11/1469

Abstract: Techniques are provided for implementing write ordering for persistent memory. A set of actions are identified for commitment to persistent memory of a node for executing an operation upon the persistent memory. An episode is created to comprise a first subset of actions of the set of actions that can be committed to the persistent memory in any order with respect to one another such that a consistent state of the persistent memory can be reconstructed in the event of a crash of the node during execution of the operation. The first subset of actions within the episode are committed to the persistent memory and further execution of the operation is blocked until the episode completes.

公开(公告)号：US11611348B2

公开(公告)日：2023-03-21

申请号：US17364946

申请日：2021-07-01

Applicant: NetApp Inc.

Inventor： Ram Kesavan ,  Matthew Fontaine Curtis-Maury ,  Abdul Basit ,  Vinay Devadas ,  Ananthan Subramanian ,  Mark Smith

IPC: H03M1/12 ,  H03M1/06 ,  G06F3/06 ,  G06F16/901

Abstract: Techniques are provided for implementing a file system format for persistent memory. A node, with persistent memory, receives an operation associated with a file identifier and file system instance information. A list of file system info objects are evaluated to identify a file system info object matching the file system instance information. An inofile, identified by the file system info object as being associated with inodes of files within an instance of the file system targeted by the operation, is traversed to identify an inode matching the file identifier. If the inode has an indicator that the file is tiered into the persistent memory, then the inode it utilized to facilitate execution of the operation upon the persistent memory. Otherwise, the operation is routed to a storage file system tier for execution by a storage file system upon storage associated with the node.

公开(公告)号：US11188266B2

公开(公告)日：2021-11-30

申请号：US16852580

申请日：2020-04-20

Applicant: NetApp Inc.

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

IPC: G06F12/00 ,  G06F3/06 ,  G06F11/14

Abstract: Techniques are provided for implementing write ordering for persistent memory. A set of actions are identified for commitment to persistent memory of a node for executing an operation upon the persistent memory. An episode is created to comprise a first subset of actions of the set of actions that can be committed to the persistent memory in any order with respect to one another such that a consistent state of the persistent memory can be reconstructed in the event of a crash of the node during execution of the operation. The first subset of actions within the episode are committed to the persistent memory and further execution of the operation is blocked until the episode completes.

公开(公告)号：US10983709B2

公开(公告)日：2021-04-20

申请号：US16777346

申请日：2020-01-30

Applicant: NetApp, Inc.

Inventor： Ram Kesavan ,  Ananthan Subramanian ,  Hiroshi Ishii ,  Abdul Basit ,  Joseph Brown ,  Rohit Singh

IPC: G06F3/06

Abstract: Methods, non-transitory computer readable media, and computing devices that execute a storage operation, without journaling the storage operation in a log, and withhold from a file system a list of freed inodes including an indication of an inode freed as a result of the execution of the storage operation. A consistency point operation is then initiated that retrieves storage operations logged as journal entries in the log and commits a result of each of the storage operations to data storage devices. A list of available inodes is updated based on the list of freed inodes, when the consistency point operation is determined to be complete. This technology reduces the number of storage operations that are required to be journaled to maintain consistency of a file system, thereby reducing the runtime resources required to facilitate the journaling and replay resource required to replay the storage operations following a recovery.

公开(公告)号：US20200167084A1

公开(公告)日：2020-05-28

申请号：US16777346

申请日：2020-01-30

Applicant: NetApp, Inc.

Inventor： Ram Kesavan ,  Ananthan Subramanian ,  Hiroshi Ishii ,  Abdul Basit ,  Joseph Brown ,  Rohit Singh

IPC: G06F3/06

Abstract: Methods, non-transitory computer readable media, and computing devices that execute a storage operation, without journaling the storage operation in a log, and withhold from a file system a list of freed inodes including an indication of an inode freed as a result of the execution of the storage operation. A consistency point operation is then initiated that retrieves storage operations logged as journal entries in the log and commits a result of each of the storage operations to data storage devices. A list of available inodes is updated based on the list of freed inodes, when the consistency point operation is determined to be complete. This technology reduces the number of storage operations that are required to be journaled to maintain consistency of a file system, thereby reducing the runtime resources required to facilitate the journaling and replay resource required to replay the storage operations following a recovery.

公开(公告)号：US20170344266A1

公开(公告)日：2017-11-30

申请号：US15166876

申请日：2016-05-27

Applicant: NetApp, Inc.

Inventor： Abdul Basit ,  John Scott ,  Ashwin Palani ,  Dean Kalman

IPC: G06F3/06

CPC classification number: G06F3/0659 ,  G06F3/0613 ,  G06F3/0673

Abstract: A method, non-transitory computer readable medium, and device that assists with dynamic resource reservation based on classified input/output requests includes receiving an input/output request from a client computing device. The input/output request is classified as a first priority request, wherein the first priority request has priority to a second priority request. A deadline time period to execute the received input/output request classified as the first priority request is determined and the first priority request is added to a first priority queue. The first priority request in the first priority queue is processed by assigning a plurality of reserved resources.