公开(公告)号：US20230221877A1

公开(公告)日：2023-07-13

申请号：US17684436

申请日：2022-03-02

Applicant: VMware, Inc.

Inventor： Banghui LUO ,  Tao XIE ,  Zhen LIU ,  Enning XIANG ,  YangYang ZHANG ,  Wenguang WANG ,  Kiran PATIL

IPC: G06F3/06

CPC classification number: G06F3/0647 ,  G06F3/0664 ,  G06F3/0659 ,  G06F3/0617 ,  G06F3/0619 ,  G06F3/067

Abstract: Example methods and systems to perform a migration of a virtualized computing instance and its first snapshot hierarchy from a first object store to a second object store have been disclosed. One example method includes identifying a first disk chain of the first snapshot hierarchy having an object running point, identifying a second disk chain of the first snapshot hierarchy different from the first disk chain, and migrating the second disk chain from the first object store to the second object store to form a first branch of a second snapshot hierarchy in the second object store. After the migrating, the example method includes instructing to take a first native snapshot on the object running point in the second object store, instructing to revert the object running point along the first branch and migrating the first disk chain from the first object store to the second object store.

公开(公告)号：US20240086391A1

公开(公告)日：2024-03-14

申请号：US17940853

申请日：2022-09-08

Applicant: VMware, Inc.

Inventor： Kevin Rayfeng LI ,  Wenguang WANG ,  Quanxing LIU ,  Pascal RENAULD ,  Kiran PATIL

IPC: G06F16/23 ,  G06F9/455

CPC classification number: G06F16/2365 ,  G06F9/45558 ,  G06F2009/45583

Abstract: Systems and methods for inspection and repair of VSAN object metadata. A user-space indirection layer is maintained to map logical addresses of VSAN objects to physical memory addresses of their metadata. Commands may then be sent from the user space to distributed object manager (DOM) clients, with the physical addresses of metadata of objects to be inspected. DOM owners thus may bypass their own indirection layers to retrieve object metadata directly from received user commands. Retrieved information is then used to reconstruct and repair object metadata. Repaired metadata may be written back to the VSAN by transmitting a write request containing the physical address at which the repaired metadata is to be written. DOM owners may be placed in a specified mode in which received I/O instructions are ignored unless they are designated as being for metadata repair purposes, such as by including a physical address.

公开(公告)号：US20240111722A1

公开(公告)日：2024-04-04

申请号：US18057384

申请日：2022-11-21

Applicant: VMware, Inc.

Inventor： Xiaohua FAN ,  Zhaohui GUO ,  Wenguang WANG ,  Kiran PATIL ,  Abhay Kumar JAIN

IPC: G06F16/16 ,  G06F16/185 ,  G06F16/188

CPC classification number: G06F16/162 ,  G06F16/185 ,  G06F16/188

Abstract: Deleting directories in a virtual distributed file system (VDFS), and non-virtual file systems, involves changing the name of a selected directory to a unique object identifier (UID) and moving the selected directory, named according to the UID, to a deletion target directory. A recursive process, implemented using a background deletion thread, starts in the current directory and identifies objects in the current directory. For an object that is a file or an empty directory, the object is added to a deletion queue. For an object that is a directory that is not empty, the recursion drops down into that directory as the new current directory. When the recursion has exhausted the selected directory, or some maximum object count has been reached, the objects identified in the deletion queue are deleted. This approach can also be used for file operations other than deletion, such as compression, encryption, and hashing.