IP Library › Granted Patent US 12,445,283
Granted Patent B2
US 12,445,283 · App. 18/332,462 · Granted Oct 14, 2025

End-to-end restartability of cross-region replication using a new replication

Inventors: Parth Singhal (San Francisco, CA); Vikram Singh Bisht (Seattle, WA); Satish Kumar Kashi Visvanathan (San Jose, CA); Niharika Salady (Woburn, MA)
Assignee: Oracle International Corporation
H04L9/14G06F9/505G06F11/1417G06F11/1451G06F11/1464G06F11/2023G06F11/2028G06F16/128G06F16/1756G06F16/178G06F16/1844G06F16/185G06F16/2365G06F16/27G06F21/602G06F21/6218H04L9/0819H04L9/0836H04L9/0891H04L9/0894H04L9/3228G06F16/1774G06F16/2246G06F2201/84
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Quick Facts
Patent No.
US 12,445,283
App. No.
18/332,462
Granted
Oct 14, 2025
Kind
B2
Abstract

Techniques are described for performing different types of restart operations for a file storage replication between a source file system and a target file system in different cloud infrastructure regions. In certain embodiments, the disclosed techniques perform a restart operation to terminate a current cross-region replication by synchronizing resource cleanup operations in the source file system and the target file system, respectively. In other embodiments, disclosed techniques perform a restart operation to allow a customer to reuse the source file system by identifying a restartable base snapshot in the source file system without dependency on the target file system.

Claims (57)

1. A method, comprising:

performing, by a computing system, a first cross-region replication between a source file system and a target file system, the source file system and the target file system being in different regions, and the first cross-region replication comprising transferring deltas of two given snapshots of a plurality of snapshots in the source file system to the target file system;

receiving, by the computing system, a request to terminate the first cross-region replication being performed between the source file system and the target file system;

synchronizing, by the computing system, first operations in the source file system and second operations in the target file system by using a first set of states and a second set of states, the first operations in the source file system comprising a first set of resource cleanups in the source file system, the second operations in the target file system comprising a second set of resource cleanups in the target file system, the second set of states comprising a hierarchy of a first subset and a second subset, and the first subset and the second subset of the second set of states configured to separately control timing of the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system depending on sources of requests to terminate the first cross-region replication; and

starting, by the computing system, a second cross-region replication between the source file system and the target file system subsequent to the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system,

wherein the plurality of snapshots comprise first-type snapshots and second-type snapshots, and the second set of resource cleanups comprises converting the first-type snapshots to the second-type snapshots, and wherein the source file system and the target file system use application program interfaces (APIs) to communicate state transitions of the first set of states and a second set of states.

2. The method of claim 1 , wherein the first set of states tracks resource management and utilization, and is visible to customers.

3. The method of claim 1 , wherein the second set of states tracks ownership of replication-related jobs of components of the source file system and the target file system, and is not visible to customers.

4. The method of claim 1 ,

wherein performing the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system is tracked by the first set of states; and

wherein the first subset and the second subset of the second set of states configured to separately control timing comprise:

performing the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system is controlled by the first subset of the second set of states when the request to terminate the first cross-region replication is initiated by the source file system; and

performing the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system is controlled by the second subset of the second set of states when the request to terminate the first cross-region replication is initiated by the target file system.

5. The method of claim 1 , wherein the request to terminate the first cross-region replication is initiated by the source file system.

6. The method of claim 5 , wherein the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system are performed at the same time.

7. The method of claim 1 , wherein the request to terminate the first cross-region replication is initiated by the target file system.

8. The method of claim 7 , wherein the second set of resource cleanups in the target file system is performed and completed before the first set of resource cleanups in the source file system starts.

9. A non-transitory computer-readable medium storing computer-executable instructions that, when executed by one or more processors of a computing system, cause the one or more processors to perform operations comprising:

performing, by a computing system, a first cross-region replication between a source file system and a target file system, the source file system and the target file system being in different regions, and the first cross-region replication comprising transferring deltas of two given snapshots of a plurality of snapshots in the source file system to the target file system;

receiving, by the computing system, a request to terminate the first cross-region replication being performed between the source file system and the target file system;

synchronizing, by the computing system, first operations in the source file system and second operations in the target file system by using a first set of states and a second set of states, the first operations in the source file system comprising a first set of resource cleanups in the source file system, the second operations in the target file system comprising a second set of resource cleanups in the target file system, the second set of states comprising a hierarchy of a first subset and a second subset, and the first subset and the second subset of the second set of states configured to separately control timing of the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system depending on sources of requests to terminate the first cross-region replication; and

starting, by the computing system, a second cross-region replication between the source file system and the target file system subsequent to the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system,

wherein the plurality of snapshots comprise first-type snapshots and second-type snapshots, and the second set of resource cleanups comprises converting the first-type snapshots to the second-type snapshots, and wherein the source file system and the target file system use application program interfaces (APIs) to communicate state transitions of the first set of states and a second set of states.

10. The non-transitory computer-readable medium of claim 9 , wherein the first set of states tracks resource management and utilization, and is visible to customers.

11. The non-transitory computer-readable medium of claim 9 , wherein the second set of states tracks ownership of replication-related jobs of components of the source file system and the target file system, and is not visible to customers.

12. The non-transitory computer-readable medium of claim 9 ,

wherein performing the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system is tracked by the first set of states; and

wherein the first subset and the second subset of the second set of states configured to separately control timing comprise:

performing the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system is controlled by the first subset of the second set of states when the request to terminate the first cross-region replication is initiated by the source file system; and

performing the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system is controlled by the second subset of the second set of states when the request to terminate the first cross-region replication is initiated by the target file system.

13. The non-transitory computer-readable medium of claim 9 ,

wherein the request to terminate the first cross-region replication is initiated by the source file system; and

wherein the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system are performed at the same time.

14. The non-transitory computer-readable medium of claim 9 ,

wherein the request to terminate the first cross-region replication is initiated by the target file system; and

wherein the second set of resource cleanups in the target file system is performed and completed before the first set of resource cleanups in the source file system starts.

15. A system, comprising:

one or more processors; and

one or more computer readable media storing computer-executable instructions that, when executed by the one or more processors, cause the system to:

perform a first cross-region replication between a source file system and a target file system, the source file system and the target file system being in different regions, and the first cross-region replication comprising transferring deltas of two given snapshots of a plurality of snapshots in the source file system to the target file system;

receiving a request to terminate the first cross-region replication being performed between the source file system and the target file system;

synchronizing first operations in the source file system and second operations in the target file system by using a first set of states and a second set of states, the first operations in the source file system comprising a first set of resource cleanups in the source file system, the second operations in the target file system comprising a second set of resource cleanups in the target file system, the second set of states comprising a hierarchy of a first subset and a second subset, and the first subset and the second subset of the second set of states configured to separately control timing of the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system depending on sources of requests to terminate the first cross-region replication; and

starting, by the computing system, a second cross-region replication between the source file system and the target file system subsequent to the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system,

wherein the plurality of snapshots comprise first-type snapshots and second-type snapshots, and the second set of resource cleanups comprises converting the first-type snapshots to the second-type snapshots, and wherein the source file system and the target file system use application program interfaces (APIs) to communicate state transitions of the first set of states and a second set of states.

16. The system of claim 15 , wherein the first set of states tracks resource management and utilization, and is visible to customers.

17. The system of claim 15 , wherein the second set of states tracks ownership of replication-related jobs of components of the source file system and the target file system, and is not visible to customers.

18. The system of claim 15 ,

wherein performing the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system is tracked by the first set of states; and

wherein the first subset and the second subset of the second set of states configured to separately control timing comprise:

performing the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system is controlled by the first subset of the second set of states when the request to terminate the first cross-region replication is initiated by the source file system; and

performing the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system is controlled by the second subset of the second set of states when the request to terminate the first cross-region replication is initiated by the target file system.

19. The system of claim 15 ,

wherein the request to terminate the first cross-region replication is initiated by the source file system; and

wherein the first set of resource cleanups in the source file system and the second set of resource cleanups in the target file system are performed at the same time.

20. The system of claim 15 ,

wherein the request to terminate the first cross-region replication is initiated by the target file system; and

wherein the second set of resource cleanups in the target file system is performed and completed before the first set of resource cleanups in the source file system starts.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 9, 2023
From: SINGHAL, PARTH; BISHT, VIKRAM SINGH; VISVANATHAN, SATISH KUMAR KASHI; SALADY, NIHARIKA
To: ORACLE INTERNATIONAL CORPORATION
Reel/Frame 063913/0321 →
Continuity (5)
Provisional Application 63378486 · Oct 5, 2022
Provisional Application 63412243 · Sep 30, 2022
Provisional Application 63357526 · Jun 30, 2022
Provisional Application 63352992 · Jun 16, 2022
Related Publication 20230409540A1 · Dec 21, 2023
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