公开(公告)号：US11327927B2

公开(公告)日：2022-05-10

申请号：US16112700

申请日：2018-08-25

Applicant: VMware, Inc.

Inventor： Asit Desai ,  Derek Uluski ,  Alexander T. Garthwaite ,  Sunil Satnur ,  Ilya Languev ,  Raveesh Ahuja

IPC: G06F16/00 ,  G06F16/11 ,  G06F9/455 ,  G06F16/22

Abstract: System and method for creating group snapshots of multiple storage objects uses storage structures to store the storage objects in a storage system. In order to create a group snapshot of storage objects, a prepare snapshot process is executed at each of multiple host computers managing the storage objects as storage structures to block input and output operations on the storage objects stored in the storage structures. A commit snapshot process is then executed at each of the multiple host computers to create snapshots of the storage object in the respective storage structures. In addition, the snapshots of the storage object are recorded in the respective storage structures as snapshot entries in the respective storage structures.

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.

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.

公开(公告)号：US20220066883A1

公开(公告)日：2022-03-03

申请号：US17002669

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 ,  G06F16/25 ,  G06F16/27 ,  H04L29/08

Abstract: Techniques for recovering metadata associated with data backed up in cloud object storage are provided. In one set of embodiments, a computer system can create a snapshot of a data set, where the snapshot includes a plurality of data blocks of the data set that have been modified since the creation of a prior snapshot of the data set. The computer system can further upload the snapshot to a cloud object storage platform of a cloud infrastructure, where the snapshot is uploaded as a plurality of log segments conforming to an object format of the cloud object storage platform, and where each log segment includes one or more data blocks in the plurality of data blocks, and a set of metadata comprising, for each of the one or more data blocks, an identifier of the data set, an identifier of the snapshot, and a logical block address (LBA) of the data block. The computer system can then communicate the set of metadata to a server component running in a cloud compute and block storage platform of the cloud infrastructure.