公开(公告)号：US20230224155A1

公开(公告)日：2023-07-13

申请号：US17684432

申请日：2022-03-02

Applicant: VMware, Inc.

Inventor： Wenguang WANG ,  Abhay Kuamr JAIN ,  Ruiling DOU ,  Tao XIE ,  Xin LI ,  Chandrakanth GADHIRAJU ,  Kevin Rayfeng LI ,  Satish PUDI

IPC: H04L9/08 ,  G06F21/60

CPC classification number: H04L9/0891 ,  G06F21/602

Abstract: An example method for a first host, being an owner of an object stored in a virtual storage area network (vSAN) cluster, to perform encryption and decryption operations during a rekey in the vSAN cluster is disclosed. The method includes obtaining a first encryption key and a first key identifier (ID) of the first encryption key; transmitting the first key ID and an active key index to a second host; using the first encryption key to perform encryption and decryption operations; and in response to a determination of receiving a key change notification from a master node of the vSAN cluster, terminating a connection with the second host.

公开(公告)号：US20250094401A1

公开(公告)日：2025-03-20

申请号：US18469533

申请日：2023-09-18

Applicant: VMware, Inc.

Inventor： Quanxing LIU ,  Wenguang WANG ,  Eric KNAUFT ,  Enning XIANG ,  Salit GAZIT ,  Satish PUDI

IPC: G06F16/22 ,  G06F16/23

Abstract: A system manages a log-structured file system (LFS) by: receiving an input/output (I/O) operation for the LFS, the I/O operation prompting a key to be added to a first node of a tree metadata structure, the tree mapping addresses in a first address space to addresses in a second address space; determining that addition of the key to the first node would exceed a maximum number of keys allowed in the first node; adding a second node to the tree based on the determining, the second node containing the key; moving a quantity of keys from the first node to the second node such that a total number of keys resulting in the second node is less than half of the maximum number of keys, minus one, configured to be stored in nodes of the LFS; and writing updates to the tree metadata structure within the LFS.

公开(公告)号：US20220121365A1

公开(公告)日：2022-04-21

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.