公开(公告)号：US11494088B2

公开(公告)日：2022-11-08

申请号：US16774175

申请日：2020-01-28

Applicant: NetApp Inc.

Inventor： Xin Wang ,  Vijay Deshmukh ,  Kiyoshi Komatsu ,  Jonathan Curley ,  Laura Beegle ,  Srishylam Simharajan ,  Gurmeet Singh

IPC: G06F3/06 ,  G06F16/27 ,  G06F16/178 ,  G06F16/182 ,  G06F16/174

Abstract: The disclosed techniques enable push-based piggybacking of a source-driven logical replication system. Logical replication of a data set (e.g., a snapshot) from a source node to a destination node can be achieved from a source-driven system while preserving the effects of storage efficiency operations (deduplication) applied at the source node. However, if missing data extents are detected at the destination, the destination has an extent pulling problem as the destination may not have knowledge of the physical layout on the source-side and/or mechanisms for requesting extents. The techniques overcome the extent pulling problem in a source-driven replication system by introducing specific protocols for obtaining missing extents within an existing replication environment by piggybacking data pushes from the source.

公开(公告)号：US20220318191A1

公开(公告)日：2022-10-06

申请号：US17217485

申请日：2021-03-30

Applicant: NetApp, Inc.

Inventor： Bill Zumach ,  Keith Bare ,  Xin Wang

IPC: G06F16/14 ,  G06F16/13

Abstract: Methods, non-transitory machine readable media, and computing devices that facilitate more efficient file system directory analytics are disclosed. With this technology, a bucket value is increased for one of a plurality of buckets in each of a plurality of histograms associated with a file system directory in a hierarchical directory tree after a storage operation creating a file in the file system directory. A time value is set for the file based on a time of the storage operation. The bucket value is adjusted responsive to subsequent storage operation(s) (e.g., read, write, or delete) associated with the file. The one of the buckets is identified after the subsequent storage operation(s) based on the time value. An interactive analytics interface is output that is configured to generate, using one or more of the histograms, historical activity associated with the file system directory responsive to a selection of the file system directory.

公开(公告)号：US20180121116A1

公开(公告)日：2018-05-03

申请号：US15851895

申请日：2017-12-22

Applicant: NetApp Inc.

Inventor： Xin Wang ,  Vijay Deshmukh ,  Kiyoshi Komatsu ,  Jonathan Curley ,  Laura Beegle ,  Srishylam Simharajan ,  Gurmeet Singh

IPC: G06F3/06 ,  G06F17/30

CPC classification number: G06F3/0619 ,  G06F3/065 ,  G06F3/067 ,  G06F16/1748 ,  G06F16/178 ,  G06F16/184 ,  G06F16/27

Abstract: The disclosed techniques enable push-based piggybacking of a source-driven logical replication system. Logical replication of a data set (e.g., a snapshot) from a source node to a destination node can be achieved from a source-driven system while preserving the effects of storage efficiency operations (deduplication) applied at the source node. However, if missing data extents are detected at the destination, the destination has an extent pulling problem as the destination may not have knowledge of the physical layout on the source-side and/or mechanisms for requesting extents. The techniques overcome the extent pulling problem in a source-driven replication system by introducing specific protocols for obtaining missing extents within an existing replication environment by piggybacking data pushes from the source.

公开(公告)号：US08955087B2

公开(公告)日：2015-02-10

申请号：US14162074

申请日：2014-01-23

Applicant: Netapp, Inc.

Inventor： Xin Wang ,  Keith Allen Bare, II

IPC: H04L29/06 ,  G06F13/10 ,  H04L29/08 ,  H04L12/819 ,  G06F3/06

CPC classification number: G06F13/10 ,  G06F3/061 ,  G06F3/0647 ,  G06F3/067 ,  H04L47/215 ,  H04L67/1095 ,  H04L67/1097 ,  H04L67/32

Abstract: Machine implemented method and system for transferring replicated information from a first storage location managed by a storage operating system at a first storage system node and accessible to a client computing system to a second storage location managed by a second storage system node are provided. A resource pool having a plurality of tokens is maintained for authorizing a replication engine to transfer replicated information from the first storage location to the second storage location. The number of available tokens is increased when traffic due to client requests for accessing the first storage location is less than a first threshold level. The number of available tokens is decreased for reducing transfer of information via the replication engine, when latency in responding to the client requests reaches a second threshold value and the traffic due to client requests reaches the first threshold value.

Abstract translation: 提供了一种机器实现的方法和系统，用于从第一存储系统节点处的由存储操作系统管理的第一存储位置传送复制信息，并且可由客户端计算系统访问由第二存储系统节点管理的第二存储位置。 维护具有多个令牌的资源池，用于授权复制引擎将复制的信息从第一存储位置传送到第二存储位置。 当由于访问第一存储位置的客户端请求而导致的流量小于第一阈值水平时，可用令牌的数量增加。 当响应于客户机请求的延迟达到第二阈值并且由于客户机请求的流量达到第一阈值时，减少可用令牌的数量以减少经由复制引擎的信息传送。

公开(公告)号：US11940954B2

公开(公告)日：2024-03-26

申请号：US18093894

申请日：2023-01-06

Applicant: NetApp, Inc.

Inventor： Richard Jernigan ,  Xin Wang ,  Subramanian Natarajan ,  Richard Chow ,  Adam Ciapponi ,  Brad Lisson ,  Dave Rose

IPC: G06F16/17 ,  G06F16/13 ,  G06F16/14 ,  G06F16/18

CPC classification number: G06F16/1734 ,  G06F16/13 ,  G06F16/14 ,  G06F16/18

Abstract: Methods, non-transitory machine readable media, and computing devices that ensure correctness of file system analytics are disclosed. With this technology, a first generation number for a volume is incremented in response to a modification of a rule set that defines properties of objects of a file system associated with the volume. A determination is made when a second generation number in a first inode for a first one of the objects matches the first generation number. The first inode is identified based on a traversal of a directory tree associated with the file system. The modified rule set is applied to the properties for the first one of the objects to obtain values, when the second generation number fails to match the first generation number. Analytics data is output after the traversal has completed. The analytics data is generated in response to a query and is based on the values.

公开(公告)号：US20140137236A1

公开(公告)日：2014-05-15

申请号：US14162074

申请日：2014-01-23

Applicant: NETAPP, INC.

Inventor： Xin Wang ,  Keith Allen Bare, II

IPC: G06F13/10

CPC classification number: G06F13/10 ,  G06F3/061 ,  G06F3/0647 ,  G06F3/067 ,  H04L47/215 ,  H04L67/1095 ,  H04L67/1097 ,  H04L67/32

Abstract: Machine implemented method and system for transferring replicated information from a first storage location managed by a storage operating system at a first storage system node and accessible to a client computing system to a second storage location managed by a second storage system node are provided. A resource pool having a plurality of tokens is maintained for authorizing a replication engine to transfer replicated information from the first storage location to the second storage location. The number of available tokens is increased when traffic due to client requests for accessing the first storage location is less than a first threshold level. The number of available tokens is decreased for reducing transfer of information via the replication engine, when latency in responding to the client requests reaches a second threshold value and the traffic due to client requests reaches the first threshold value.

Abstract translation: 提供了一种机器实现的方法和系统，用于从第一存储系统节点处的由存储操作系统管理的第一存储位置传送复制信息，并且可由客户端计算系统访问由第二存储系统节点管理的第二存储位置。 维护具有多个令牌的资源池，用于授权复制引擎将复制的信息从第一存储位置传送到第二存储位置。 当由于访问第一存储位置的客户端请求而导致的流量小于第一阈值水平时，可用令牌的数量增加。 当响应于客户机请求的延迟达到第二阈值并且由于客户机请求的流量达到第一阈值时，减少可用令牌的数量以减少经由复制引擎的信息传送。