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    OBJECT AND SEQUENCE NUMBER MANAGEMENT
    44.
    发明申请
    OBJECT AND SEQUENCE NUMBER MANAGEMENT 有权

    公开(公告)号：US20250005003A1

    公开(公告)日：2025-01-02

    申请号：US18828077

    申请日：2024-09-09

    Applicant: NetApp, Inc.

    Inventor： Ananthan Subramanian ,  Sridevi Jantli ,  Anil Paul Thoppil ,  Cheryl Marie Thompson ,  Qinghua Zheng

    IPC: G06F16/215 ,  G06F16/22 ,  G06F16/23

    Abstract: Techniques are provided for orphan object detection, invalid sequence number detection, and asynchronous object cleanup. A storage system may store data within one or more tiers of storage, such as a storage tier (e.g., solid state storage and disks maintained by the storage system), a remote object store (e.g., storage provided by a third party storage provider), and/or other storage tiers. Orphan objects, within the remote object store, that are no longer used by the storage system may be detected and/or deleted. When an aggregate of volumes is deleted, corresponding objects, within the remote object store, may be identified and/or deleted. Invalid sequence numbers (e.g., lost or corrupt sequence numbers locally maintained in a metafile) assigned to objects within the remote object store may be identified, deleted, and/or fixed.

    CLONE VOLUME SPLIT OF CLONE VOLUME FROM PARENT VOLUME WITH DATA TIERED TO OBJECT STORE
    45.
    发明公开
    CLONE VOLUME SPLIT OF CLONE VOLUME FROM PARENT VOLUME WITH DATA TIERED TO OBJECT STORE 审中-公开

    公开(公告)号：US20240361938A1

    公开(公告)日：2024-10-31

    申请号：US18308703

    申请日：2023-04-28

    Applicant: NetApp Inc.

    Inventor： Cheryl Marie Thompson ,  Garima Choudhary ,  Rajesh Sudarsan

    IPC: G06F3/06

    CPC classification number: G06F3/0644 ,  G06F3/0608

    Abstract: Techniques are provided for splitting a clone volume from a parent volume whose data is stored within objects of an object store. A transfer map is used to track mappings of selectively created child object identifiers used to subsequently copy the one or more parent objects to create child objects corresponding to the child object identifiers. A consistency point phase is performed. For each child object identifier processed during the consistency point phase, an object state for a corresponding child object is set to a copy pending state. A reverse map is populated with a reverse map entry. The transfer map is traversed to copy the one or more parent objects as the child objects for splitting the clone volume from the parent volume. The reverse map is used to verify that the child objects are successfully created with valid data.

    REPAIR SUBSYSTEM FOR PERSISTENT METAFILE REPAIR TO IMPROVE RESILIENCY
    46.
    发明申请
    REPAIR SUBSYSTEM FOR PERSISTENT METAFILE REPAIR TO IMPROVE RESILIENCY 有权

    公开(公告)号：US20230135954A1

    公开(公告)日：2023-05-04

    申请号：US17731900

    申请日：2022-04-28

    Applicant: NetApp Inc.

    Inventor： Palak Sharma ,  Dibyasri Nandi ,  Sindhushree K N ,  Cheryl Marie Thompson ,  Qinghua Zheng ,  Venkateswarlu Tella ,  Debanjan Paul ,  Dinakaran Narayanan

    IPC: G06F3/06

    Abstract: Techniques are provided for implementing a unified object format. The unified object format is used to format data in a performance tier (e.g., infrequently accessed data, snapshot data, etc.) into objects that are stored into an object store for low cost, scalable, long term storage compared to storage of the performance tier. With the unified object format, compression of the data may be retained when the data is stored as the objects into the object store. Additional compression may also be provided for the data in the objects. The unified object format includes slot header metadata used to track the location of the data within the object notwithstanding the data being compressed and/or stored at non-fixed boundaries. The slot header metadata may be cached at the performance tier for improved read performance and may be repaired by a repair subsystem (a slot header repair subsystem).

    OBJECT FORMAT RESILIENT TO REMOTE OBJECT STORE ERRORS
    50.
    发明申请
    OBJECT FORMAT RESILIENT TO REMOTE OBJECT STORE ERRORS 有权

    公开(公告)号：US20220147418A1

    公开(公告)日：2022-05-12

    申请号：US17582221

    申请日：2022-01-24

    Applicant: NetApp Inc.

    Inventor： Ananthan Subramanian ,  Ganga Bhavani Kondapalli ,  Cheryl Marie Thompson ,  Kevin Daniel Varghese ,  Anil Paul Thoppil ,  Qinghua Zheng

    IPC: G06F11/10 ,  G06F12/08 ,  G06F3/06 ,  G06F16/178

    Abstract: Techniques are provided for remote object store error handling. A storage system may store data within one or more tiers of storage, such as a local storage tier (e.g., solid state storage and disks maintained by the storage system), a remote object store (e.g., storage provided by a third party storage provider), and/or other storage tiers. Because the remote object store may not provide the same data consistency and guarantees that the storage system provides for clients such as through the local storage tier, additional validation is provided by the storage system for the remote object store. For example, when data is put into an object of the remote object store, a verification get operation is performed to read and validate information within a header of the object. Other verifications and checks are performed such as using a locally stored metafile to detect corrupt or lost metadata and/or objects.

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