Granted Patent B2

US 12,535,949 · App. 18/417,509 · Granted Jan 27, 2026

Inventors: Shuai Wang (Shenzhen, CN); Yi Jiang (Chengdu, CN)

Assignee: HUAWEI TECHNOLOGIES CO. LTD.

G06F3/0604G06F3/0659G06F3/0679

Abstract

Claims (63)

1 . A method, comprising:

obtaining, from an internal memory of a storage apparatus, a first access request in a remote direct memory access (RDMA) format, wherein the first access request requests to access a persistent storage medium of the storage apparatus and to access a volume of data that does not exceed a preset threshold, and wherein the first access request is split into access sub-requests when the volume of data exceeds the preset threshold;

directly converting the first access request into a second access request in a non-volatile memory express (NVMe) format; and

executing a target operation corresponding to the second access request to access the persistent storage medium.

2 . The method of claim 1 , wherein directly converting the first access request comprises:

converting the first access request into the second access request; and

writing the second access request into an NVMe submit queue.

3 . The method of claim 2 , wherein executing the target operation comprises:

obtaining, from the NVMe submit queue, the second access request;

executing the second access request to read data from the persistent storage medium; and

storing a response message to the access request in the NVMe format into an NVMe completion queue.

4 . The method of claim 3 , further comprising:

directly converting the response message in the NVMe completion queue from the NVMe format to the RDMA format; and

transmitting, based on an RDMA protocol, the response message.

5 . An apparatus, comprising:

one or more memories configured to store instructions; and

at least one processor coupled to the one or more memories and configured to execute the instructions to:

obtain, from an internal memory of the apparatus, a first access request in a remote direct memory access (RDMA) format, wherein the first access request requests to access persistent storage medium of the apparatus and to access a volume of data that does not exceed a preset threshold, and wherein the first access request is split into access sub-requests when the volume of data exceeds the preset threshold;

directly convert the first access request into a second access request in a non-volatile memory express (NVMe) format; and

execute a target operation corresponding to the second access request to access the persistent storage medium.

6 . The apparatus of claim 5 , wherein the at least one processor is further configured to execute the instructions to:

obtain, from the internal memory, the first access request;

convert the first access request into the second access request; and

write the second access request into an NVMe submit queue.

7 . The apparatus of claim 6 , wherein the at least one processor is further configured to execute the instructions to:

obtain, from the NVMe submit queue, the second access request;

execute the second access request to read data from the persistent storage medium; and

store a response message to the access request in the NVMe format into an NVMe completion queue.

8 . The apparatus of claim 7 , wherein the at least one processor is further configured to execute the instructions to:

directly convert the response message in the NVMe completion queue from the NVMe format to the RDMA format; and

transmit, based on an RDMA protocol, the response message.

9 . The apparatus of claim 6 , wherein the at least one processor is further configured to execute the instructions to:

obtain, from the NVMe submit queue, the second access request;

execute the second access request to write data into the persistent storage medium; and

store a response message to the access request in the NVMe format into an NVMe completion queue.

10 . The apparatus of claim 5 , wherein the persistent storage medium comprises a non-volatile random-access memory (NVRAM).

11 . The apparatus of claim 5 , wherein the persistent storage medium comprises a phase-change memory (PCM).

12 . The method of claim 2 , wherein executing the target operation comprises:

obtaining, from the NVMe submit queue, the second access request;

executing the second access request to write data into the persistent storage medium; and

storing a response message to the access request in the NVMe format into an NVMe completion queue.

13 . A computer program product comprising instructions stored on a non-transitory computer-readable medium that, when executed by a processor, cause an apparatus to:

obtain, from an internal memory of the apparatus, a first access request in a remote direct memory access (RDMA) format, wherein the apparatus comprises the internal memory and a persistent storage medium, and wherein the first access request requests to access the persistent storage medium and to access a volume of data that does not exceed a preset threshold, and wherein the first access request is split into access sub-requests when the volume of data exceeds the preset threshold;

directly convert the first access request into a second access request in a non-volatile memory express (NVMe) format; and

execute a target operation corresponding to the second access request to access the persistent storage medium.

14 . The computer program product of claim 13 , wherein the processor is further configured to execute the instructions to:

obtain, from the internal memory, the first access request;

convert the first access request into the second access request; and

write the second access request into an NVMe submit queue.

15 . The computer program product of claim 14 , wherein the processor is further configured to execute the instructions to:

obtain, from the NVMe submit queue, the second access request;

execute the second access request to read data from the persistent storage medium; and

store a response message to the access request in the NVMe format into an NVMe completion queue.

16 . The computer program product of claim 15 , wherein the processor is further configured to execute the instructions to:

directly convert the response message in the NVMe completion queue from the NVMe format to the RDMA format; and

transmit, based on an RDMA protocol, the response message.

17 . The computer program product of claim 14 , wherein the processor is further configured to execute the instructions to:

obtain, from the NVMe submit queue, the second access request;

execute the second access request to write data into the persistent storage medium; and

store a response message to the access request in the NVMe format into an NVMe completion queue.

18 . The computer program product of claim 13 , wherein each of the access sub-requests corresponding to the volume of the data is less than or equal to the preset threshold.

19 . The method of claim 1 , wherein each of the access sub-requests corresponding to the volume of the data is less than or equal to the preset threshold.

20 . The apparatus of claim 5 , wherein each of the access sub-requests corresponding to the volume of the data is less than or equal to the preset threshold.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (22)