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    Tiering Data to a Cold Storage Tier of Cloud Object Storage
    11.
    发明申请
    Tiering Data to a Cold Storage Tier of Cloud Object Storage 有权

    公开(公告)号：US20220066882A1

    公开(公告)日：2022-03-03

    申请号：US17002577

    申请日：2020-08-25

    Applicant: VMware, Inc.

    Inventor： Wenguang Wang ,  Vamsi Gunturu ,  Junlong Gao ,  Petr Vandrovec ,  Ilya Languev ,  Maxime Austruy ,  Ilia Sokolinski ,  Satish Pudi

    IPC: G06F11/14 ,  G06F12/02 ,  G06F3/06

    Abstract: Techniques for tiering data to a cold storage tier of a cloud object storage platform are provided. In one set of embodiments, a computer system can identify one or more old snapshots of a data set that reside in a first storage tier of the cloud object storage platform, where the one or more old snapshots are snapshots that are unlikely to be deleted from the cloud object storage platform within a period of N days. The computer system can further, for each snapshot in the one or more old snapshots: identify one or more data blocks in the snapshot that are superseded by a more recent snapshot in the one or more old snapshots; write the one or more data blocks to a second (i.e., cold) storage tier of the cloud object storage platform that has a lower storage cost than the first storage tier; and cause the one or more data blocks to be deleted from the first storage tier.

    Managing metadata for a backup data storage
    12.
    发明授权
    Managing metadata for a backup data storage 有权

    公开(公告)号：US11221944B1

    公开(公告)日：2022-01-11

    申请号：US17002667

    申请日：2020-08-25

    Applicant: VMware, Inc.

    Inventor： Wenguang Wang ,  Vamsi Gunturu ,  Junlong Gao ,  Ilya Languev ,  Petr Vandrovec ,  Maxime Austruy ,  Ilia Sokolinski ,  Satish Pudi

    IPC: G06F12/12 ,  G06F12/02 ,  G06F12/109

    Abstract: A method for managing metadata for data stored in a cloud storage is provided. The method receives, at a first of a plurality of metadata servers, information associated with an object stored in the cloud storage, the information comprising a plurality of LBAs for where the object is stored. Each metadata server allocates contiguous chunk IDs for a group of objects. The method generates a new chunk ID for the object, which is a combination of a unique fixed value and a monotonically incrementing local value associated with each LBA, such that a first LBA is mapped to a first chunk ID having a first local value and a next LBA is mapped to a second chunk ID having the first local value incremented as a second local value. The method stores the new chunk ID and other metadata in one or more tables stored in a metadata storage.

    CONTENT PROVISIONING TO VIRTUAL MACHINES
    16.
    发明申请
    CONTENT PROVISIONING TO VIRTUAL MACHINES 有权

    公开(公告)号：US20210117255A1

    公开(公告)日：2021-04-22

    申请号：US16660435

    申请日：2019-10-22

    Applicant: VMware, Inc.

    Inventor： Ravindra Kumar ,  Yogendra Baldev Bhasin ,  Kevin Scott Christopher ,  Petr Vandrovec ,  Ming Hua Zhou

    IPC: G06F9/54 ,  G06F9/455 ,  H04L29/06

    Abstract: Disclosed are various embodiments for providing content to virtual machines. A request for content can be received, wherein the request originates from a virtual machine hosted by the computing device, comprises a unique identifier for the content, and is received from the virtual machine through an inter-process communication mechanism. The unique identifier can be validated. Content can then be retrieved using the unique identifier. A copy of the content can then be provided to the virtual machine in response to validation of the unique identifier, the content being provided to the virtual machine through the inter-process communication mechanism.

    Supporting deduplication in file storage using file chunk hashes
    18.
    发明授权
    Supporting deduplication in file storage using file chunk hashes 有权

    公开(公告)号：US11500819B2

    公开(公告)日：2022-11-15

    申请号：US17028405

    申请日：2020-09-22

    Applicant: VMware, Inc.

    Inventor： Wenguang Wang ,  Vamsi Gunturu ,  Junlong Gao ,  Maxime Austruy ,  Petr Vandrovec ,  Ilya Languev ,  Ilia Sokolinski ,  Satish Pudi

    IPC: G06F7/00 ,  G06F16/174 ,  G06F16/14 ,  G06F16/13

    Abstract: The present disclosure is related to methods, systems, and machine-readable media for supporting deduplication in file storage using file chunk hashes. A hash of a chunk of a log segment can be received from a software defined data center. A chunk identifier can be associated with the hash in a hash map that stores associations between sequentially-allocated chunk identifiers and hashes. The chunk identifier can be associated with a logical address corresponding to the chunk of the log segment in a logical map that stores associations between the sequentially-allocated chunk identifiers and logical addresses. A search of the hash map can be performed to determine if the chunk is a duplicate, and the chunk can be deduplicated responsive to a determination that the chunk is a duplicate.

    Distributed object storage supporting difference-level snapshots
    19.
    发明授权
    Distributed object storage supporting difference-level snapshots 有权

    公开(公告)号：US11314440B1

    公开(公告)日：2022-04-26

    申请号：US17072904

    申请日：2020-10-16

    Applicant: VMware, Inc.

    Inventor： Wenguang Wang ,  Vamsidhar Gunturu ,  Junlong Gao ,  Ilya Languev ,  Petr Vandrovec ,  Maxime Austruy ,  Ilia Sokolinski ,  Satish Pudi

    IPC: G06F3/06 ,  G06F9/455

    Abstract: Techniques for the increased efficiency of storing data objects storage in the object storage of a software designed data center (SDDC) are provided. The techniques include the efficient storage of data, while enabling snapshots of each updating of the data. The snapshots of the data may be efficiently recovered via the techniques. Difference-level mappings for each snapshot are encoded in compact self-balancing data trees included in the object's metadata. The metadata mappings include mappings between various address spaces employed by the SDDC, as well as the address spaces employed by data stores that store the data on physical medium. Because the metadata is efficiently structured, the metadata for an object may be cached for quick lookups during data access and/or snapshot recovery. The techniques also provide low-latency recovery and/or system rollback in the event of any failure in the SDDC.

    SUPPORTING DEDUPLICATION IN OBJECT STORAGE USING SUBSET HASHES
    20.
    发明申请
    SUPPORTING DEDUPLICATION IN OBJECT STORAGE USING SUBSET HASHES 有权

    公开(公告)号：US20220091765A1

    公开(公告)日：2022-03-24

    申请号：US17028312

    申请日：2020-09-22

    Applicant: VMware, Inc.

    Inventor： Wenguang Wang ,  Vamsi Gunturu ,  Junlong Gao ,  Ilya Languev ,  Petr Vandrovec ,  Maxime Austruy ,  Ilia Sokolinski ,  Satish Pudi

    IPC: G06F3/06 ,  G06F12/1018

    Abstract: The present disclosure is related to methods, systems, and machine-readable media for supporting deduplication in object storage using subset hashes. A plurality of hashes of a plurality of blocks of a plurality of log segments can be received from a software defined data center, wherein each block corresponds to a respective logical address. Each of the plurality of logical addresses can be associated with a respective sequentially-allocated chunk identifier in a logical map. A subset hash comprising a hash of a subset of the plurality of blocks can be determined that corresponds to a contiguous range of the plurality of logical addresses. A search of a hash map for the subset hash can be performed to determine if the subset hash is a duplicate. The subset of the plurality of blocks can be deduplicated responsive to a determination that the subset hash is a duplicate.

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