Asynchronous persistent memory data mirroring

Patent metadata

Field	Value
Publication number	US-12067259-B2
Application number	US-202217985400-A
Country	US
Kind code	B2
Filing date	Nov 11, 2022
Priority date	Nov 11, 2022
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

Disclosed is a method for preforming the data mirror comprising: receiving from an application executing on a computing device a request to write data to a first local persistence memory of the computing device; issuing an async write operation to mirror the write request to write a same data to a second local persistence memory of the computing device; performing a write operation to write the data to the first local persistence memory by using a central processing unit (CPU) from the processing resource of the computing device; determining, by an additional CPU, a status completion result indicating whether the async write operation is complete; and in response to determining the async write operation is complete, determining, by the additional CPU, a status check result indicating whether the async write operation is successful.

First claim

What is claimed is:

1. A computer-implemented method, comprising:
issuing, by a first processor, to a supplemental device, an asynchronous request to perform a write operation of data to a first local persistence memory;
copying, by the first processor to a second local persistence memory, the data;
obtaining, by a second processor, a status completion result indicating that the write operation completed; and
in response to obtaining the status completion result, obtaining, by the second processor, a status check result indicating that the write operation successfully wrote the data to the first local persistence memory.

2. The method of claim 1 , wherein the supplemental device comprises a third processor.

3. The method of claim 1 , wherein the supplemental device comprises a remote direct memory access (RDMA) network interface card.

4. The method of claim 1 , wherein the supplemental device comprises a Data Streaming Accelerator (DSA) engine.

5. The method of claim 1 , wherein the supplemental device comprises a runtime engine.

6. The method of claim 1 , wherein obtaining the status check result further comprises:
in response to determining that the write operation meets an error threshold, determining that the write operation is successful; and
in response to determining that the write operation does not meet the error threshold:
providing an indication of an error to the supplemental device; and
perform, by the supplemental device, a second write operation of the data to the first local persistence memory.

7. The method of claim 1 , wherein the write operation and the asynchronous write operation begin at the same time.

8. The method of claim 1 , wherein the asynchronous write operation completes after the write operation.

9. A non-transitory machine-readable medium storing instructions therein, which when executed by one or more processors, cause the one or more processors to:
issue, by a first processor, to a supplemental device, an asynchronous request to perform a write operation of data to a first local persistence memory;
copy, by the first processor to a second local persistence memory, the data;
obtain, by a second processor, a status completion result indicating that the write operation completed; and
in response to obtaining the status completion result, obtain, by the second processor, a status check result indicating that the write operation successfully wrote the data to the first local persistence memory.

10. The non-transitory machine-readable medium of claim 9 , wherein the supplemental device comprises a third processor.

11. The non-transitory machine-readable medium of claim 9 , wherein the supplemental device comprises a remote direct memory access (RDMA) network interface card.

12. The non-transitory machine-readable medium of claim 9 , wherein the supplemental device comprises a Data Streaming Accelerator (DSA) engine.

13. The non-transitory machine-readable medium of claim 9 , wherein the supplemental device comprises a runtime engine.

14. The non-transitory machine-readable medium of claim 9 , wherein to obtain the status check result is further to:
in response to determining that the write operation meets an error threshold, determine that the write operation is successful; and
in response to determining that the write operation does not meet the error threshold:
provide an indication of an error to the supplemental device; and
perform, by the supplemental device, a second write operation of the data to the first local persistence memory.

15. The non-transitory machine-readable medium of claim 9 , wherein the write operation and the asynchronous write operation begin at the same time.

16. The non-transitory machine-readable medium of claim 9 , wherein the asynchronous write operation completes after the write operation.

17. A system, comprising:
one or more processors; and
a memory coupled to the one or more processors to store instructions, which when executed by the one or more processors, cause the one or more processors to:
issue, by a first processor, to a supplemental device, an asynchronous request to perform a write operation of data to a first local persistence memory;
copy, by the first processor to a second local persistence memory, the data;
obtain, by a second processor, a status completion result indicating that the write operation completed; and
in response to obtaining the status completion result, obtain, by the second processor, a status check result indicating that the write operation successfully wrote the data to the first local persistence memory.

18. The system of claim 17 , wherein the supplemental device comprises a third processor.

19. The system of claim 17 , wherein the supplemental device comprises a remote direct memory access (RDMA) network interface card.

20. The system of claim 17 , wherein the supplemental device comprises a Data Streaming Accelerator (DSA) engine.

Assignees

• Dell Products Lp

Inventors

• Chen Tao
• Gong Shuguang
• Zou Yong

Classifications

• G06F3/0659

  Command handling arrangements, e.g. command buffers, queues, command scheduling · CPC title

• G06F3/067

  Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS] · CPC title

• G06F3/0619 Primary

  in relation to data integrity, e.g. data losses, bit errors · CPC title