Memory Management Method, Apparatus, and System

• US 20160070475A1
• Filed: 11/16/2015
• Published: 03/10/2016
• Est. Priority Date: 05/17/2013
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhang, Lixin, Hou, Rui, Zhang, Ke, Jiang, Tao
• Granted Patent: US 9,940,020 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 12/02 Addressing or allocation; Relocation program address sequencing G06F9/00; arrangements for selecting an address in a digital store G11C8/00
• CPC Class Codes: G06F 12/08 in hierarchically structured memory systems, e.g. virtual memory systems
• CPC Class Codes: G06F 3/0604 Improving or facilitating administration, e.g. storage management
• CPC Class Codes: G06F 3/0629 Configuration or reconfiguration of storage systems
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: G06F 9/5016 the resource being the memory

Abstract

A memory management method implemented by a requesting node includes sending first indication information used for indicating a length of memory required by the requesting node and receiving second indication information used for indicating first remote memory provided to the requesting node by a target contributing node in at least one contributing node that can provide remote memory. The method also includes determining, from available virtual addresses, a first virtual address corresponding to the first remote memory, and sending a first data read/write instruction for the first data when first data whose pointer is within a range of the first virtual address needs to be read/written, where the first data read/write instruction includes third indication information, and the third indication information is used for indicating storage space, for storing the first data, in the first remote memory.

Claims

1. A method, comprising:

sending, by a transmitter of a requesting node in a memory management system, first indication information, wherein the first indication information indicates a length of memory required by the requesting node;

receiving, by a receiver of the requesting node, second indication information, wherein the second indication information indicates first remote memory provided to the requesting node by a target contributing node, the first remote memory is determined according to the first indication information, and a length of the first remote memory is greater than or equal to the length of the memory required by the requesting node;

determining, by the requesting node, from available virtual addresses, a first virtual address corresponding to the first remote memory; and

sending, by the requesting node, a first data read/write instruction for reading/writing first data, a pointer of the first data pointing to a virtual address within a range of the first virtual address, wherein the first data read/write instruction comprises third indication information, and the third indication information indicates storage space, for storing the first data, in the first remote memory, so that the target contributing node accesses the first data according to the third indication information.

2. The method according to claim 1, wherein:

sending the first indication information comprises;

acquiring, by the requesting node, contributing node information for indicating the target contributing node; and

sending, by the transmitter of the requesting node, the first indication information to the target contributing node according to the contributing node information; and

receiving the second indication information comprises receiving, by the receiver of the requesting node, the second indication information sent by the target contributing node.

3. The method according to claim 2, wherein:

sending the first indication information to the target contributing node comprises sending, by the transmitter of the requesting node, a second data write instruction for writing second data to the target contributing node according to the contributing node information, wherein the second data write instruction comprises the first indication information; and

receiving the second indication information sent by the target contributing node comprises receiving, by the receiver of the requesting node, a second data write response that is sent by the target contributing node and indicates that storage of the second data is completed, wherein the second data write response comprises the second indication information.

4. The method according to claim 1, wherein the sending first indication information comprises sending, by a transmitter of the requesting node in the memory management system, the first indication information to a control center, so that the control center determines the target contributing node and the first remote memory, the target contributing node selected from one or more contributing nodes, the target contributing node and the first remote memory selected according to the first indication information and a length of the remote memory that can be provided by each of the one or more contributing nodes, wherein the length of the remote memory that can be provided by each of the one or more contributing nodes is determined by the control center according to fourth indication information that is sent by each of the one or more contributing nodes and indicates the length of the remote memory that can be provided by the one or more contributing node;

and

wherein receiving the second indication information comprises receiving, by a receiver of the requesting node, the second indication information sent by the control center.

5. The method according to claim 4, further comprising receiving, by the requesting node, contributing node information that is sent by the control center and indicates the target contributing node;

wherein sending the first data read/write instruction for the first data comprises sending, by the requesting node, the first data read/write instruction for reading/writing the first data to the target contributing node according to the contributing node information.

6. The method according to claim 1, wherein determining the first virtual address comprises:

determining, by the requesting node, from local memory within the requesting node, first local memory corresponding to the first remote memory; and

determining, by the requesting node, the first virtual address according to the first local memory.

7. A method, comprising:

determining, by a contributing node in a memory management system, a first remote memory, wherein the first remote memory is determined according to first indication information received from a requesting node, the first indication information indicates a length of memory required by the requesting node, and a length of the first remote memory is greater than or equal to the length of the memory required by the requesting node;

receiving, by a receiver of the contributing node, a first data read/write instruction for reading/writing first data sent by the requesting node, wherein the first data read/write instruction instructs the contributing node to access the first data, the first data read/write instruction comprises third indication information, and the third indication information indicates a storage space for storing the first data in the first remote memory; and

accessing, by the contributing node, the first data according to the first data read/write instruction and the third indication information.

8. The method according to claim 7, wherein determining the first remote memory comprises:

receiving, by the contributing node, the first indication information sent by the requesting node; and

determining, by the contributing node, the first remote memory according to the first indication information; and

wherein the method further comprises sending, by the contributing node, second indication information indicating the first remote memory to the requesting node.

9. The method according to claim 8, wherein:

receiving the first indication information sent by the requesting node comprises;

receiving, by the contributing node, a second data write instruction and the second data, wherein the second data write instruction comprises the first indication information and the second data write instruction is for writing second data sent by the requesting node; and

determining, by the contributing node, the first remote memory according to the first indication information, and storing the first data in the first remote memory; and

sending the second indication information comprises sending, by the contributing node, a second data write response indicating that storage of the second data is completed to the requesting node, wherein the second data write response comprises the second indication information for indicating the first remote memory.

10. The method according to claim 7, wherein determining the first remote memory comprises:

sending, by the contributing node, fourth indication information to a control center, wherein the fourth indication information indicates a start physical address and a length of remote memory that can be provided by the contributing node;

receiving, by the contributing node, second indication information that is sent by the control center and is used for indicating the first remote memory, wherein the first remote memory is determined by the control center according to the first indication information and the fourth indication information; and

determining, by the contributing node, the first remote memory according to the second indication information.

11. The method according to claim 7, wherein accessing the first data comprises:

determining, by the contributing node, that the storage space is within a range of the first remote memory; and

accessing, by the contributing node, the first data in the storage space according to the first data read/write instruction.

12. The method according to claim 7, further comprising:

acquiring, by the contributing node, requesting node information for indicating the requesting node;

determining, by the contributing node, the requesting node according to the requesting node information; and

forbidding, by the contributing node, a node other than the requesting node to use the first remote memory.

13. An apparatus, comprising:

a transmitter, configured to enable a requesting node in a memory management system to send first indication information, wherein the first indication information indicates a length of memory required by the requesting node;

a receiver, configured to receive second indication information, wherein the second indication information indicates first remote memory provided to the requesting node by a target contributing node, the first remote memory is determined according to the first indication information, and a length of the first remote memory is greater than or equal to the length of the memory required by the requesting node;

a processor; and

a computer-readable storage medium storing a program to be executed by the processor, the program including instructions for;

determining, from available virtual addresses, a first virtual address corresponding to the first remote memory; and

controlling the transmitter to send a first data read/write instruction for the first data whose pointer points to virtual address within a range of the first virtual address, wherein the first data read/write instruction comprises third indication information, and the third indication information indicates storage space, for storing the first data, in the first remote memory, so that the target contributing node accesses the first data according to the third indication information.

14. The apparatus according to claim 13, wherein:

the program further includes instructions for acquiring contributing node information for indicating the target contributing node;

the transmitter is specifically configured to send the first indication information to the target contributing node according to the contributing node information; and

the receiver is specifically configured to receive the second indication information sent by the target contributing node.

15. The apparatus according to claim 14, wherein:

the transmitter is configured to send a second data write instruction for second data to the target contributing node according to the contributing node information, wherein the second data write instruction comprises the first indication information; and

the receiver is configured to receive a second data write response that is sent by the target contributing node and indicates that storage of the second data is completed, wherein the second data write response comprises the second indication information.

16. The apparatus according to claim 13, wherein:

the transmitter is configured to send the first indication information to a control center, so that the control center determines the target contributing node from the contributing node and the first remote memory, the target contributing node and the first remote memory determined according to the first indication information and a length of the remote memory that can be provided by the contributing node, wherein the length of the remote memory that can be provided by the contributing node is determined by the control center according to fourth indication information that is sent by the contributing node and is used for indicating the length of the remote memory that can be provided by the contributing node; and

the receiver is configured to receive the second indication information sent by the control center.

17. The apparatus according to claim 16, wherein:

the receiver is further configured to receive contributing node information that is sent by the control center and is used for indicating the target contributing node; and

the transmitter is specifically configured to send the first data read/write instruction for the first data to the target contributing node according to the contributing node information.

18. The apparatus according to claim 13, wherein the program further includes instructions for:

determining, from local memory within the requesting node, first local memory corresponding to the first remote memory; and

determining the first virtual address according to the first local memory.

19. An apparatus, comprising:

a processor; and

a computer-readable storage medium storing a program to be executed by the processor, the program including instructions for enabling a contributing node in a memory management system to determine first remote memory, wherein the first remote memory is determined according to first indication information received from a requesting node, the first indication information indicates a length of memory required by the requesting node, and a length of the first remote memory is greater than or equal to the length of the memory required by the requesting node; and

a receiver, configured to receive a first data read/write instruction for reading/writing first data sent by the requesting node, wherein the first data read/write instruction instructs the contributing node to access the first data, the first data read/write instruction comprises third indication information, and the third indication information indicates storage space, for storing the first data, in the first remote memory;

wherein the program further includes instructions for accessing the first data according to the first data read/write instruction and the third indication information.

20. The apparatus according to claim 19, wherein:

the receiver is specifically configured to receive the first indication information sent by the requesting node;

the program further includes instructions for determining the first remote memory according to the first indication information; and

the apparatus further comprises a transmitter, configured to send, to the requesting node, second indication information for indicating the first remote memory.

21. The apparatus according to claim 20, wherein:

the receiver is specifically configured to receive a second data write instruction for second data sent by the requesting node and the second data, wherein the second data write instruction comprises the first indication information;

the program further includes instructions for determining the first remote memory according to the first indication information, and store the first data in the first remote memory; and

the transmitter is specifically configured to send, to the requesting node, a second data write response for indicating that storage of the second data is completed, wherein the second data write response comprises the second indication information for indicating the first remote memory.

22. The apparatus according to claim 19, further comprising:

a transmitter, configured to send fourth indication information to a control center, wherein the fourth indication information is used for indicating a start physical address and a length of remote memory that can be provided by the contributing node;

the receiver is specifically configured to receive second indication information that is sent by the control center and is used for indicating the first remote memory, wherein the first remote memory is determined by the control center according to the first indication information and the fourth indication information; and

the program further includes instructions for determining the first remote memory according to the second indication information.

23. The apparatus according to claim 19, wherein the program further includes instructions for:

determining that the storage space is within a range of the first remote memory; and

accessing the first data in the storage space according to the first data read/write instruction.

24. The apparatus according to claim 19, wherein the program further includes instructions for:

requesting node information for indicating the requesting node;

determining the requesting node according to the requesting node information; and

forbidding a node other than the requesting node to use the first remote memory.

25. A system, comprising:

a requesting node; and

a contributing node;

wherein the requesting node is configured to;

send, by a transmitter, first indication information, wherein the first indication information indicates a length of memory required by the requesting node;

receive, by a receiver, second indication information, wherein the second indication information indicates first remote memory provided to the requesting node by a target contributing node, the first remote memory is determined according to the first indication information, and the length of the first remote memory is greater than or equal to the length of the memory required by the requesting node;

determine, from available virtual addresses, a first virtual address corresponding to the first remote memory, and

send a first data read/write instruction for reading/writing first data whose pointer points to virtual address within a range of the first virtual address, wherein the first data read/write instruction comprises third indication information, and the third indication information is used for indicating storage space, for storing the first data, in the first remote memory; and

wherein the contributing node is configured to;

determine the first remote memory, the first remote memory determined according to the first indication information received from the requesting node;

receive the first data read/write instruction, for the first data, sent by the requesting node; and

access the first data according to the first data read/write instruction and the third indication information.

26. The system according to claim 25, further comprising a control center, configured to:

determine a start physical address and a length of the remote memory that can be provided by the contributing node;

receive the first indication information sent by the requesting node;

determine, from the contributing node according to the first indication information and the start physical address and the length of the remote memory that can be provided by the at least one contributing node, the target contributing node and the first remote memory provided by the target contributing node to the requesting node; and

send, to the requesting node and the target contributing node, the second indication information for indicating the first remote memory.