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    Low-latency shared memory channel across address spaces in a computing system
    14.
    发明授权
    Low-latency shared memory channel across address spaces in a computing system 有权

    公开(公告)号：US11513832B2

    公开(公告)日：2022-11-29

    申请号：US17013727

    申请日：2020-09-07

    Applicant: VMWARE, INC.

    Inventor： Mounesh Badiger ,  Wenguang Wang ,  Adrian Drzewiecki ,  Maxime Austruy ,  Satish Pudi

    IPC: G06F9/455 ,  G06F12/1036 ,  G06F12/02

    Abstract: Examples provide a method of communication between a client driver and a filesystem server. The client driver executes in a virtual machine (VM) and the filesystem server executes in a hypervisor. The method includes: allocating, by the client driver, shared memory in an address space of the VM for the communication; sending identification information for the shared memory from the client driver to the filesystem server through an inter-process communication channel between the client driver and the filesystem server; identifying, by the filesystem server in cooperation with a kernel of the hypervisor, the shared memory within an address space of the hypervisor, based on the identification information, to create a shared memory channel; sending commands from the client driver to the filesystem server through the shared memory channel; and receiving completion messages for the commands from the filesystem server to the client driver through the shared memory channel.

    Log-structured formats for managing archived storage of objects
    15.
    发明授权
    Log-structured formats for managing archived storage of objects 有权

    公开(公告)号：US11436102B2

    公开(公告)日：2022-09-06

    申请号：US16998060

    申请日：2020-08-20

    Applicant: VMware, Inc.

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

    IPC: G06F16/00 ,  G06F11/14 ,  G06F11/20 ,  G06F16/17 ,  G06F16/22 ,  G06F16/185 ,  G06F3/06

    Abstract: Solutions for managing archived storage include receiving, at a first node, a snapshot comprising object data (e.g., a virtual machine disk snapshot) from a second node (e.g., a software defined data center), and storing the snapshot in a tiered structure that includes a data tier and a metadata tier. Snapshots may be used for fail-over operations and/or backups, to support disaster recovery. The data tier comprises a log-structured file system (LFS), and the metadata tier comprises a content addressable storage (CAS) identifying addresses within the LFS. The metadata tier also comprises a logical layer indicating content in the CAS. Segment cleaning of the data tier is performed using a segment usage table (SUT). Some examples include performing a fail-over operation from the second node to a third node using at least the stored snapshot for workload recovery. In some examples, the CAS comprises a log-structured merge-tree (LSM-tree).

    Tiering data to a cold storage tier of cloud object storage
    16.
    发明授权
    Tiering data to a cold storage tier of cloud object storage 有权

    公开(公告)号：US11288129B2

    公开(公告)日：2022-03-29

    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 ,  G06F3/06 ,  G06F12/02

    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.

    SUPPORTING DEDUPLICATION IN FILE STORAGE USING FILE CHUNK HASHES
    17.
    发明申请
    SUPPORTING DEDUPLICATION IN FILE STORAGE USING FILE CHUNK HASHES 有权

    公开(公告)号：US20220092033A1

    公开(公告)日：2022-03-24

    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: G06F16/174 ,  G06F16/13 ,  G06F16/14

    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.

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