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：US11334545B2

公开(公告)日：2022-05-17

申请号：US16112698

申请日：2018-08-25

Applicant: VMware, Inc.

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

IPC: G06F16/22

Abstract: System and method for managing space in storage object structures stored in a storage system uses an object B tree structure to manage a storage object in a storage object structure in the storage system, which provides virtual physical block addresses for data of the storage object and for metadata of nodes of the object B tree structure. The metadata of the nodes of the object B tree structure is written in the storage object structure using first real physical block addresses, which are translated from the virtual block addresses for the metadata of the nodes of the object B tree structure using a metadata system file B tree structure. The data of the storage object is written in the storage object structure using second real physical block addresses, which are translated from the virtual block addresses for the data of the storage object using a data system file B tree structure.

公开(公告)号：US10860560B2

公开(公告)日：2020-12-08

申请号：US15882123

申请日：2018-01-29

Applicant: VMware, Inc.

Inventor： Mayank Rawat ,  Ritesh Shukla ,  Li Ding ,  Serge Pashenkov ,  Raveesh Ahuja

IPC: G06F16/22 ,  G06F3/06 ,  G06F16/11

Abstract: User data of different snapshots for the same virtual disk are stored in the same storage object. Similarly, metadata of different snapshots for the same virtual disk are stored in the same storage object, and log data of different snapshots for the same virtual disk are stored in the same storage object. As a result, the number of different storage objects that are managed for snapshots do not increase proportionally with the number of snapshots taken. In addition, any one of the multitude of persistent storage back-ends can be selected as the storage back-end for the storage objects according to user preference, system requirement, snapshot policy, or any other criteria. Another advantage is that the storage location of the read data can be obtained with a single read of the metadata storage object, instead of traversing metadata files of multiple snapshots.

公开(公告)号：US09881040B2

公开(公告)日：2018-01-30

申请号：US14831808

申请日：2015-08-20

Applicant: VMware, Inc.

Inventor： Mayank Rawat ,  Ritesh Shukla ,  Li Ding ,  Serge Pashenkov ,  Raveesh Ahuja

IPC: G06F3/06 ,  G06F17/30

CPC classification number: G06F17/30327 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/067 ,  G06F17/30088

Abstract: User data of different snapshots for the same virtual disk are stored in the same storage object. Similarly, metadata of different snapshots for the same virtual disk are stored in the same storage object, and log data of different snapshots for the same virtual disk are stored in the same storage object. As a result, the number of different storage objects that are managed for snapshots do not increase proportionally with the number of snapshots taken. In addition, any one of the multitude of persistent storage back-ends can be selected as the storage back-end for the storage objects according to user preference, system requirement, snapshot policy, or any other criteria. Another advantage is that the storage location of the read data can be obtained with a single read of the metadata storage object, instead of traversing metadata files of multiple snapshots.