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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：US09983817B2
公开(公告)日：2018-05-29
申请号：US15052246
申请日：2016-02-24
Applicant: NetApp, Inc.
Inventor： Travis Ian Callahan , Mrinal K. Bhattacharjee , Ganga Bhavani Kondapalli , William Arthur Gutknecht , Andrew Zhu
CPC classification number: G06F3/0631 , G06F3/0604 , G06F3/0617 , G06F3/0643 , G06F3/0644 , G06F3/0653 , G06F3/067 , G06F3/0689 , G06F17/30138 , G06F17/30194 , H04L67/1097
Abstract: Presented herein are methods, non-transitory computer readable media, and devices for allocating resources to a particular volume and triggering a consistency point based on the amount given to each volume, thus providing dynamic consistency point triggers. Methods for providing dynamic consistency point triggers are disclosed which include: determining a volume's capacity to utilize resources based on the volume's performance; receiving an allocation of the divided resources based on total system resources available within the storage system and the volume's performance; and triggering a consistency point upon exhausting a threshold percentage of the received/allocated resources.
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公开(公告)号：US12153504B2
公开(公告)日：2024-11-26
申请号：US18089192
申请日：2022-12-27
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：US20240118981A1
公开(公告)日：2024-04-11
申请号：US18089192
申请日：2022-12-27
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
CPC classification number: G06F11/2025 , G06F11/1662
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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