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公开(公告)号：US20250086075A1
公开(公告)日：2025-03-13
申请号：US18958730
申请日：2024-11-25
Applicant: NetApp, Inc.
Inventor： Yash Hetal Trivedi , Daniel McCarthy , Ananthan Subramanian , William Arthur Gutknecht , Kevin Daniel Varghese , Swaroop Vikram Choudhari , Abdul Basit , Christopher Clark Corey , Chad Edmund Schneider
Abstract: Techniques are provided for failing over an aggregate from one file system instance to a different file system instance of a distributed scale-out storage system. The aggregate may be stored within distributed storage that is accessible to a plurality of file system instances of the distributed scale-out storage system. When the aggregate is failed over from a first file system instance to a second file system instance, the first file system instance may still have a valid read lease that allows the first file system instance to serve client I/O, directed to the aggregate, using a cache. In order to prevent the first file system instance from serving stale data from the cache before the read lease expires, state machines and a set of control data are used to ensure that the second file system instance attaches to the aggregate only after the read lease has expired.
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公开(公告)号：US20250068600A1
公开(公告)日：2025-02-27
申请号：US18942186
申请日：2024-11-08
Applicant: NetApp, Inc.
Inventor： Ananthan Subramanian , Daniel McCarthy , Arindam Banerjee
IPC: G06F16/182 , G06F16/16 , G06F16/188 , H04L67/00
Abstract: A method for reducing write latency in a distributed file system. A write request that includes a volume identifier is received at a data management subsystem deployed on a node within a distributed storage system. The data management subsystem maps the volume identifier to a file system volume and maps the file system volume to a set of logical block addresses in a logical block device in a storage management subsystem deployed on the node. The storage management subsystem maps the logical block device to a metadata object for the logical block device on the node that is used to process the write request. The mapping of the file system volume to the set of logical block addresses in the logical block device enables co-locating the metadata object with the file system volume on the node, which reduces the write latency associated with processing the write request.
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公开(公告)号：US20240364604A1
公开(公告)日：2024-10-31
申请号：US18307103
申请日：2023-04-26
Applicant: NetApp Inc.
Inventor： Abdul Basit , Daniel McCarthy , Christopher Lee Cason , Jian Hu
IPC: H04L41/5067 , G06F9/50
CPC classification number: H04L41/5067 , G06F9/5072 , G06F2209/501 , G06F2209/5011 , G06F2209/503 , G06F2209/505
Abstract: Techniques are provided for dynamically implementing quality of service policies using a configurable quality of service provider pipeline. A quality of service policy is defined for throttling I/O operations received by a node based upon whether resources of the node have become over utilized. The quality of service policy is used to dynamically construct a quality of service provider pipeline with select quality of service providers that improve the ability to efficiently utilize resources compared to conventional static polices that cannot adequately react to 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 constructing and utilizing the quality of service provider pipeline results in more efficient operation and mitigates resource starvation.
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公开(公告)号：US12014056B2
公开(公告)日：2024-06-18
申请号：US17893511
申请日：2022-08-23
Applicant: NetApp Inc.
IPC: G06F3/06
CPC classification number: G06F3/0619 , G06F3/064 , G06F3/067
Abstract: Techniques are provided for repairing a primary slice file, affected by a storage device error, by using one or more dead replica slice files. The primary slice file is used by a node of a distributed storage architecture as an indirection layer between storage containers (e.g., a volume or LUN) and physical storage where data is physically stored. To improve resiliency of the distributed storage architecture, changes to the primary slice file are replicated to replica slice files hosted by other nodes. If a replica slice file falls out of sync with the primary slice file, then the replica slice file is considered dead (out of sync) and could potentially comprise stale data. If a storage device error affects blocks storing data of the primary slice file, then the techniques provided herein can repair the primary slice file using non-stale data from one or more dead replica slice files.
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公开(公告)号：US20220391361A1
公开(公告)日：2022-12-08
申请号：US17449760
申请日：2021-10-01
Applicant: NetApp, Inc.
Inventor： Ananthan Subramanian , Daniel McCarthy , Arindam Banerjee
IPC: G06F16/182 , G06F16/188 , G06F16/16
Abstract: A method for reducing write latency in a distributed file system. A write request that includes a volume identifier is received at a data management subsystem deployed on a node within a distributed storage system. The data management subsystem maps the volume identifier to a file system volume and maps the file system volume to a set of logical block addresses in a logical block device in a storage management subsystem deployed on the node. The storage management subsystem maps the logical block device to a metadata object for the logical block device on the node that is used to process the write request. The mapping of the file system volume to the set of logical block addresses in the logical block device enables co-locating the metadata object with the file system volume on the node, which reduces the write latency associated with processing the write request.
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Patent Agency Ranking
公开(公告)号：US20240427799A1
公开(公告)日：2024-12-26
申请号：US18820543
申请日：2024-08-30
Applicant: NetApp, Inc.
Inventor： Arindam Banerjee , Daniel McCarthy , Christopher Cason , Ananthan Subramanian
IPC: G06F16/27
Abstract: Systems and methods for scaling application and/or storage system functions of a distributed storage system based on a heterogeneous resource pool are provided. According to one embodiment, the distributed storage system has a composable, service-based architecture that provides scalability, resiliency, and load balancing. The distributed storage system includes a cluster of nodes each potentially having differing capabilities in terms of processing, memory, and/or storage. The distributed storage system takes advantage of different types of nodes by selectively instating appropriate services (e.g., file and volume services and/or block and storage management services) on the nodes based on their respective capabilities. Furthermore, disaggregation of these services, facilitated by interposing a frictionless layer (e.g., in the form of one or more globally accessible logical disks) therebetween, enables independent and on-demand scaling of either or both of application and storage system functions within the cluster while making use of the heterogeneous resource pool.
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公开(公告)号：US12079242B2
公开(公告)日：2024-09-03
申请号：US18047774
申请日：2022-10-19
Applicant: NetApp, Inc.
Inventor： Arindam Banerjee , Daniel McCarthy , Christopher Cason , Ananthan Subramanian
CPC classification number: G06F16/27
Abstract: Systems and methods for scaling application and/or storage system functions of a distributed storage system based on a heterogeneous resource pool are provided. According to one embodiment, the distributed storage system has a composable, service-based architecture that provides scalability, resiliency, and load balancing. The distributed storage system includes a cluster of nodes each potentially having differing capabilities in terms of processing, memory, and/or storage. The distributed storage system takes advantage of different types of nodes by selectively instating appropriate services (e.g., file and volume services and/or block and storage management services) on the nodes based on their respective capabilities. Furthermore, disaggregation of these services, facilitated by interposing a frictionless layer (e.g., in the form of one or more globally accessible logical disks) therebetween, enables independent and on-demand scaling of either or both of application and storage system functions within the cluster while making use of the heterogeneous resource pool.
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公开(公告)号：US10460124B2
公开(公告)日：2019-10-29
申请号：US15186787
申请日：2016-06-20
Applicant: NETAPP, INC.
Inventor： David D. Wright , Daniel McCarthy
Abstract: A server node with one or more processors is configured to receive a request to write data to a storage medium and compress the data to yield compressed data. The one or more processors are further configured to encrypt the compressed data according to an encryption key to yield compressed and encrypted data. The one or more processors are further configured to hash the compressed and encrypted data to yield one or more block identifiers that uniquely represent the compressed and encrypted data.
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公开(公告)号：US20240370410A1
公开(公告)日：2024-11-07
申请号：US18773483
申请日：2024-07-15
Applicant: NetApp, Inc.
Inventor： Ravikanth Dronamraju , Ananthan Subramanian , Daniel McCarthy , Christopher Cason , Arindam Banerjee
IPC: G06F16/188 , G06F9/50 , G06F16/182
Abstract: In various examples, data storage is managed using a distributed storage management system that is resilient. Data blocks of a logical block device may be distributed across multiple nodes in a cluster. The logical block device may correspond to a file system volume associated with a file system instance deployed on a selected node within a distributed block layer of a distributed file system. Each data block may have a location in the cluster identified by a block identifier associated with each data block. Each data block may be replicated on at least one other node in the cluster. A metadata object corresponding to a logical block device that maps to the file system volume may be replicated on at least another node in the cluster. Each data block and the metadata object may be hosted on virtualized storage that is protected using redundant array independent disks (RAID).
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公开(公告)号：US20240361912A1
公开(公告)日：2024-10-31
申请号：US18307097
申请日：2023-04-26
Applicant: NetApp Inc.
Inventor： Abdul Basit , Daniel McCarthy , Christopher Lee Cason , Jian Hu
IPC: G06F3/06
CPC classification number: G06F3/0613 , G06F3/0659 , G06F3/0683
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.
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