公开(公告)号：US20250103231A1

公开(公告)日：2025-03-27

申请号：US18471392

申请日：2023-09-21

Applicant: VMware LLC

Inventor： Ruiling Dou ,  Tao Xie ,  Zongliang Li ,  Asit Desai ,  Wenguang Wang ,  Litao Xia

IPC: G06F3/06

Abstract: The disclosure herein describes converting a disk cluster to a different format. A format conversion instruction associated with a disk cluster is received. A first subgroup of disks of the disk cluster that are the emptiest disks of the disk cluster are identified and all data is evacuated from the first subgroup of disks to other disks of the disk cluster. The first subgroup of disks is reformatted based on the received format conversion instruction. A group of data objects stored in the disk cluster is converted based on the format conversion instruction and the converted group of data objects are written to the reformatted first subgroup of disks. The process iterates through the disks of the disk cluster to reformat all disks and convert all data objects based on the received format conversion instruction. The process reduces the write operations required to convert the format of the disk cluster.

公开(公告)号：US12260105B1

公开(公告)日：2025-03-25

申请号：US18471392

申请日：2023-09-21

Applicant: VMware LLC

Inventor： Ruiling Dou ,  Tao Xie ,  Zongliang Li ,  Asit Desai ,  Wenguang Wang ,  Litao Xia

IPC: G06F3/06

Abstract: The disclosure herein describes converting a disk cluster to a different format. A format conversion instruction associated with a disk cluster is received. A first subgroup of disks of the disk cluster that are the emptiest disks of the disk cluster are identified and all data is evacuated from the first subgroup of disks to other disks of the disk cluster. The first subgroup of disks is reformatted based on the received format conversion instruction. A group of data objects stored in the disk cluster is converted based on the format conversion instruction and the converted group of data objects are written to the reformatted first subgroup of disks. The process iterates through the disks of the disk cluster to reformat all disks and convert all data objects based on the received format conversion instruction. The process reduces the write operations required to convert the format of the disk cluster.

公开(公告)号：US12189574B2

公开(公告)日：2025-01-07

申请号：US17504845

申请日：2021-10-19

Applicant: VMware LLC

Inventor： Enning Xiang ,  Wenguang Wang ,  Abhay Kumar Jain ,  Sriram Patil ,  Asit Desai ,  Eric Knauft

IPC: G06F16/11 ,  G06F12/02 ,  G06F16/182 ,  G06F16/22

Abstract: Example methods and systems for accessing data in a log-structured file system having a plurality of snapshots of storage objects backed by a first-level copy-on-write (COW) B+ tree data structure and a plurality of second-level B+ tree data structures have been disclosed. One example method includes obtaining a first first-level mapping associated with a first snapshot from the plurality of snapshots based on a first logical block address, wherein each of the plurality of snapshots corresponds to each of the plurality of second-level B+ tree data structures, identifying a first second-level B+ tree data structure corresponding to one of the plurality of snapshots based on the first first-level mapping, obtaining a first second-level mapping based on the first logical block address in the first second-level B+ tree data structure, obtaining a first physical block address based on the first second-level mapping, and accessing data at the first physical block address.