WO2021169476A1

WO2021169476A1 - Server expansion system, and power control method for same

Info

Publication number: WO2021169476A1
Application number: PCT/CN2020/134724
Authority: WO
Inventors: 张志玮
Original assignee: 苏州浪潮智能科技有限公司
Priority date: 2020-02-29
Filing date: 2020-12-09
Publication date: 2021-09-02
Also published as: CN111414066A

Abstract

A power control method for a server expansion system, applicable to an expansion system to be connected to an S0 power detection terminal and an S5 power detection terminal of a server when the system is connected. The method comprises: an expansion system determining, according to an S5 power detection condition, whether a connection to a server exists (step S1); and if so, correspondingly controlling, if an S0 power detection signal meets a preset on/off signal condition, the system itself to enter an on/off state (step S2). By using the method, an operator only needs to operate a power button of the server for the expansion system to be able to perform automatic synchronization with a power state of the server by detecting a power signal of the server, thereby simplifying a power operation process of the system, and preventing incorrect manual operation from causing system connection abnormality. In addition, since the expansion system is immediately turned on upon detecting a power-on signal of the server, and is only turned off after detecting a power-off signal of the server, the issue of a connection failure or an abruptly interrupted connection between the expansion system and the server is prevented.

Description

Server expansion system and power control method thereof

This application claims the priority of the Chinese patent application filed to the Chinese Patent Office on February 29, 2020, the application number is 202010132404.1, and the invention title is "a server expansion system and its power control method", the entire content of which is incorporated by reference In this application.

Technical field

The invention relates to the field of server expansion, in particular to a server expansion system and a power control method thereof.

Background technique

With the development of technologies such as big data and cloud computing, the computing and storage capabilities of servers need to be improved. At present, the host of the server is usually connected to an external expansion system through PCIe (Peripheral Component Interconnect Express, high-speed serial computer bus) channel, such as JBOD (Just a Bunch Of Disks, disk cluster), JBOF (Just a Bunch Of NVMe Flash, flash memory cluster) ), JBOG (Just a Bunch Of GPUs, graphics processor cluster) and other expansion systems to improve the computing and storage capabilities of the server.

Please refer to FIG. 1, which is a schematic structural diagram of a server external expansion system in the prior art. In the prior art, the power supplies of the server and the expansion system are independent of each other, and each needs to operate the power button to control the power on and off of the system. Under normal circumstances, the operator needs to turn on the expansion system first, and then turn on the server; when shutting down, the opposite is true, the server needs to be shut down first, and then the expansion system is shut down. If the server and expansion system's power-on sequence is reversed, the following problems will occur: 1) The server is turned on first, then the expansion system is turned on again. Once the expansion system is turned on later than the server initializes the PCIe channel, the server cannot be implemented correctly with the expansion system Online; 2) If the expansion system is shut down first, the PCIe channel connection will be suddenly interrupted, and the server will crash because of the sudden interruption of the PCIe channel connection and an interruption connection error. It can be seen that in order to ensure the normal connection of the server and the expansion system, the operator needs to perform sequential operations on the two, resulting in cumbersome system power operation process, and system connection abnormalities caused by human misoperation are prone to occur.

Therefore, how to provide a solution to the above-mentioned technical problems is a problem that needs to be solved by those skilled in the art at present.

Summary of the invention

The purpose of the present invention is to provide a server expansion system and its power control method. The operator only needs to operate the server's power button, and the expansion system can automatically synchronize the server's power state by detecting the server power signal, thereby simplifying the system The power supply operation process avoids the abnormal system connection caused by human misoperation, and there is no problem of the expansion system and the server connection failure and sudden connection interruption.

To solve the above technical problems, the present invention provides a power control method for a server expansion system, which is applied to an expansion system connected to the S0 power detection terminal and S5 power detection terminal of the server when the system is online, including:

Determine whether there is a connection with the server according to the S5 power detection situation of the server;

If there is a connection, the S0 power detection signal of the server is obtained, and when the S0 power detection signal meets the preset power-on signal condition, the system is controlled to enter the power-on state; when the S0 power detection signal meets the predetermined power-on signal condition, When the shutdown signal condition is set, control its own system to enter the shutdown state.

Preferably, the process of determining that the S0 power detection signal satisfies a preset shutdown signal condition includes:

Starting from the first detection that the S0 power detection signal changes from a high level to a low level, if the S0 power detection signal is low within the preset shutdown time threshold, the S0 power detection signal is determined The test signal meets the preset shutdown signal condition.

Preferably, the process of determining that the S0 power detection signal satisfies a preset power-on signal condition includes:

When it is detected for the first time that the S0 power detection signal changes from a low level to a high level, it is directly determined that the S0 power detection signal meets the preset power-on signal condition.

Preferably, when the S0 power detection signal meets the preset power-on signal condition, control the own system to enter the power-on state; when the S0 power detection signal meets the preset power-off signal condition, control the process of entering the power-off state of the own system ,include:

According to the level value of the S0 power detection signal, obtain the OR gate output value of the preset OR relationship Y(n)=X(n)+X(n-1)+...+X(nk); Among them, Y(n) is the output value of the OR gate, X(n) is the level value of the S0 power detection signal acquired at the current moment, and the acquisition time interval between X(nk) and X(n-k+1)=pre Set shutdown time threshold /k, n>k, n and k are both positive integers;

When the output value of the OR gate changes from a low level to a high level, the own system is controlled to enter the on state; when the output value of the OR gate changes from a high level to a low level, the own system is controlled to enter the off state.

Preferably, when a power button is provided on the expansion system, the power control method further includes:

If there is a connection with the server, ignore the button signal of the power button;

If there is no connection with the server, then according to the button signal of the power button, control the power on and off of the own system accordingly.

Preferably, when there is no power button on the expansion system, the power control method further includes:

If there is no connection with the server, keep the own system in the shutdown state.

To solve the above technical problems, the present invention also provides a server expansion system, including:

Memory, used to store computer programs;

The processor connected to the S0 power detection terminal and the S5 power detection terminal of the server when the system is online is used to implement the steps of any one of the power control methods of the server expansion system when the computer program is executed.

Preferably, the processor is connected to the S0 power detection terminal and the S5 power detection terminal on the server through an OCP Mezz interface or a PCIe interface when the system is online.

Preferably, the processor is specifically a CPLD or FPGA or MCU;

Correspondingly, the server expansion system further includes:

A voltage divider circuit provided between the processor and the server is used to divide the power detection signal of the server to reduce it to a voltage value that the processor can detect.

The invention provides a power control method for a server expansion system, which is applied to an expansion system connected with the S0 power detection terminal and the S5 power detection terminal of the server when the system is online. The expansion system judges whether there is a connection with the server according to the S5 power detection situation; if there is a connection, when the S0 power detection signal meets the preset power-on/off signal conditions, it controls its own system to enter the power-on/off state accordingly. It can be seen that the operator only needs to operate the power button of the server, and the expansion system can automatically synchronize the power status of the server by detecting the server power signal, thereby simplifying the system power operation process and avoiding abnormal system connection caused by human misoperation. ; Moreover, since the expansion system will start immediately after detecting the server power-on signal, and shut down after detecting the server power-off signal, there will be no problems with the expansion system and the server connection failure and sudden connection interruption.

The present invention also provides a server expansion system, which has the same beneficial effects as the above-mentioned power control method.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the prior art and the drawings needed in the embodiments. Obviously, the drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

FIG. 1 is a schematic structural diagram of a server external expansion system in the prior art;

2 is a flowchart of a power control method of a server expansion system provided by an embodiment of the present invention;

3 is a schematic structural diagram of a server external expansion system provided by an embodiment of the present invention;

Fig. 4 is a schematic diagram of determining a power-on/off signal condition provided by an embodiment of the present invention.

Detailed ways

The core of the present invention is to provide a server expansion system and its power control method. The operator only needs to operate the server's power button, and the expansion system can automatically synchronize the server's power state by detecting the server power signal, thereby simplifying the system The power supply operation process avoids the abnormal system connection caused by human misoperation, and there is no problem of the expansion system and the server connection failure and sudden connection interruption.

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Please refer to FIG. 2, which is a flowchart of a power control method of a server expansion system according to an embodiment of the present invention.

The power control method of the server expansion system is applied to the expansion system connected with the S0 power detection terminal and S5 power detection terminal of the server when the system is online (as shown in Figure 3), including:

Step S1: Determine whether there is a connection with the server according to the S5 power detection situation of the server; if so, go to step S2.

Specifically, when the server is connected to the expansion system, the expansion system is connected to the S0 power detection terminal and the S5 power detection terminal of the server; when the server is not connected to the expansion system, the expansion system and the server's S0 power detection terminal and S5 are connected The power detection terminal is disconnected. In other words, when the server and the expansion system are online, the expansion system can detect the presence of the server S5 power supply; when the server and the expansion system are not online, the expansion system cannot detect the presence of the server S5 power supply.

Based on this, the expansion system judges whether there is a connection with the server based on the S5 power detection of the server. Specifically, when the S5 power supply of the server is detected, it is determined that there is a connection with the server, and the subsequent operation of synchronizing the power state of the server needs to be performed; When the presence of the server S5 power supply is not detected, it is determined that there is no connection with the server, and there is no need to perform subsequent operations to synchronize the power status of the server.

Step S2: Obtain the S0 power detection signal of the server, and when the S0 power detection signal meets the preset power-on signal condition, control its own system to enter the power-on state; when the S0 power detection signal meets the preset power-off signal condition, control itself The system enters the shutdown state.

It should be noted that the presets in this application are set in advance and only need to be set once. Unless they need to be modified according to the actual situation, they do not need to be reset.

Specifically, the power supply of the server S0 is a power supply for starting the server system, and the power state of the power supply of the server S0 is controlled by an operation button set on the server. When the power of the server S0 is turned on by operating the button, the server system can be turned on; when the power of the server S0 is turned off by the operating button, the server system can be turned off.

Based on this, this application can determine whether the server system is booted up by detecting the power signal of the server S0 power supply, and synchronize the power state of the expansion system, that is, when the server system starts up, the expansion system needs to turn on its own power to make its own system boot up Status: After the server system is shut down, the expansion system needs to turn off its own power to make its own system enter the shutdown state. Specifically, the technical means of synchronizing the power status of the expansion system is: after the expansion system detects the presence of the server S5 power supply, it obtains the S0 power detection signal of the server, and turns on when the S0 power detection signal meets the preset power-on signal conditions. The self power supply controls its own system to enter the boot state, that is, when the S0 power detection signal meets the preset power-on signal conditions, the expansion system is immediately turned on; when the S0 power detection signal meets the preset power-off signal conditions, the self power is turned off to control itself The system enters the shutdown state, that is, after the S0 power detection signal meets the preset shutdown signal conditions, the expansion system will shut down.

On the basis of the above embodiment:

As an optional embodiment, the process of determining that the S0 power detection signal satisfies the preset shutdown signal condition includes:

From the first detection of the S0 power detection signal from high to low level, if the S0 power detection signal is low within the preset shutdown time threshold, it is determined that the S0 power detection signal meets the preset shutdown Signal conditions.

Specifically, when the power supply of the server S0 is turned on, the power supply of the server S0 outputs a high level; when the power supply of the server S0 is turned off, the power supply of the server S0 outputs a low level. In other words, when the output level of the power supply of the server S0 changes from a high level to a low level, it indicates that the power supply of the server S0 is turned off.

At the same time, considering that the output level of the S0 power supply of the server slowly drops from high to low, the detection result of the S0 power detection signal of the expansion system is not accurate enough, and the detected result may be low. , It may also be detected that the result is a high level, which causes the system to malfunction. Therefore, this application turns off the power supply in the expansion system only after it is determined that the power supply of the server S0 is turned off for a period of time. Specifically, the expansion system detects the S0 power detection signal for the first time When changing from high level to low level, the shutdown operation is not performed, but when the S0 power detection signal detected within the preset shutdown time threshold is low, the shutdown operation is performed, thereby avoiding system errors. action.

As an optional embodiment, the process of determining that the S0 power detection signal satisfies the preset power-on signal condition includes:

Specifically, considering that once the expansion system is powered on later than the time when the server initializes the PCIe channel, the server cannot properly connect with the expansion system. Therefore, this application turns on the power supply in the expansion system immediately after confirming that the server S0 is powered on. The specifics are When the expansion system detects that the S0 power detection signal changes from low to high for the first time, it will immediately perform the boot operation to ensure the correct connection between the server and the expansion system.

As an optional embodiment, when the S0 power detection signal meets the preset power-on signal condition, control the own system to enter the power-on state; when the S0 power detection signal meets the preset power-off signal condition, control the own system to enter the power-off state The process includes:

According to the level value of the S0 power detection signal, obtain the OR gate output value of the preset OR relation Y(n)=X(n)+X(n-1)+...+X(nk); among them, Y(n) is the output value of the OR gate, X(n) is the level value of the S0 power detection signal acquired at the current moment, the acquisition time interval of X(nk) and X(n-k+1) = preset shutdown Time threshold /k, n>k, n and k are both positive integers;

When the output value of the OR gate changes from low level to high level, it controls its own system to enter the power-on state; when the output value of the OR gate changes from high level to low level, it controls its own system to enter the shutdown state.

Specifically, the specific principle of determining the shutdown of the expansion system based on the S0 power detection signal is: the expansion system obtains the current level of the S0 power detection signal every preset time (preset shutdown time threshold/k), and only when When the S0 power detection signal obtained continuously k+1 times is low, the shutdown operation is performed. In other words, according to the S0 power detection signal, it is determined that the principle of shutdown of the expansion system conforms to the OR gate logic. As shown in Figure 4, only when the input values of the OR gate are all low, the output value of the OR gate is low. Otherwise, it is high level.

Based on this, the expansion system calculates the default OR gate relation Y(n)=X(n)+X(n-1)+…+X(nk) according to the level value of the S0 power detection signal Output value. When the output value of the OR gate changes from low level to high level, it controls its own system to enter the power-on state; when the output value of the OR gate changes from high level to low level, it controls its own system to enter the shutdown state.

As an optional embodiment, when a power button is provided on the expansion system, the power control method further includes:

If there is a connection with the server, the button signal of the power button is ignored;

If there is no connection with the server, it will control its own system on and off according to the button signal of the power button.

Further, when a power button is provided on the expansion system, if the expansion system is connected to the server, the button signal of the power button is ignored, that is, the power button of the expansion system does not work in this case. If there is no connection between the expansion system and the server, the power button for operating the expansion system is valid in this case, that is, the expansion system controls its own system to power on and off according to the button signal of its own power button.

As an optional embodiment, when there is no power button on the expansion system, the power control method further includes:

If there is no connection with the server, keep its own system in the shutdown state.

Further, when there is no power button on the expansion system, if the expansion system is not connected to the server, the expansion system keeps its own system in a shutdown state to save the power supply of the expansion system.

This application also provides a server expansion system, including:

Memory, used to store computer programs;

Specifically, the server expansion system of the present application includes a memory and a processor, as shown in FIG. 3, for its introduction, please refer to the embodiment of the above-mentioned power control method, which is not repeated in this application.

As an optional embodiment, the processor is connected to the S0 power detection terminal and the S5 power detection terminal on the server through an OCP Mezz interface or a PCIe interface when the system is online.

Specifically, when the expansion system is connected to the server, the processor can be connected to the S0 power detection terminal and S5 power detection terminal on the server through the OCP Mezz (an interface type) interface or the PCIe interface. Ground limit, select the interface connection according to the actual situation.

As an optional embodiment, the processor is specifically a CPLD or FPGA or MCU;

Correspondingly, the server expansion system also includes:

The voltage divider circuit between the processor and the server is used to divide the power detection signal of the server to reduce it to a voltage value that the processor can detect.

Specifically, the processor of this application can choose CPLD (Complex Programmable Logic Device), FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), or MCU (Microcontroller Unit, Micro control unit), this application is not specifically limited here, and it is selected according to actual conditions.

For these selected processors (CPLD or FPGA or MCU), the voltage of the server's power detection signal is relatively high, and the processor cannot detect it, so this application also adds a voltage divider on the connection line between the processor and the server Circuit, the function of the voltage divider circuit is to divide the power detection signal of the server and input it into the processor, so that the power detection signal of the server is reduced to a voltage value that the processor can detect.

It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations. There is any such actual relationship or sequence between operations. Moreover, the terms "including", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes those that are not explicitly listed Other elements of, or also include elements inherent to this process, method, article or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or equipment that includes the element.

The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims

A power control method for a server expansion system is characterized in that it is applied to an expansion system connected to the S0 power detection terminal and S5 power detection terminal of the server when the system is online, and includes:

Determine whether there is a connection with the server according to the S5 power detection situation of the server;

If there is a connection, the S0 power detection signal of the server is obtained, and when the S0 power detection signal meets the preset power-on signal condition, the system is controlled to enter the power-on state; when the S0 power detection signal meets the predetermined power-on signal condition, When the shutdown signal condition is set, control its own system to enter the shutdown state.
3. The power control method of a server expansion system according to claim 1, wherein the process of determining that the S0 power detection signal satisfies a preset shutdown signal condition comprises:

Starting from the first detection that the S0 power detection signal changes from a high level to a low level, if the S0 power detection signal is low within the preset shutdown time threshold, the S0 power detection signal is determined The test signal meets the preset shutdown signal condition.
3. The power control method of the server expansion system according to claim 2, wherein the determination process that the S0 power detection signal satisfies a preset power-on signal condition includes:

When it is detected for the first time that the S0 power detection signal changes from a low level to a high level, it is directly determined that the S0 power detection signal meets the preset power-on signal condition.
The power control method of the server expansion system of claim 3, wherein when the S0 power detection signal meets the preset power-on signal condition, the system is controlled to enter the power-on state; when the S0 power detection signal When the preset shutdown signal conditions are met, the process of controlling its own system to enter the shutdown state includes:

According to the level value of the S0 power detection signal, obtain the OR gate output value of the preset OR relationship Y(n)=X(n)+X(n-1)+...+X(nk); Among them, Y(n) is the output value of the OR gate, X(n) is the level value of the S0 power detection signal acquired at the current moment, and the acquisition time interval between X(nk) and X(n-k+1)=pre Set shutdown time threshold /k, n>k, n and k are both positive integers;

When the output value of the OR gate changes from a low level to a high level, the own system is controlled to enter the on state; when the output value of the OR gate changes from a high level to a low level, the own system is controlled to enter the off state.
3. The power control method of the server expansion system of claim 1, wherein when a power button is provided on the expansion system, the power control method further comprises:

If there is a connection with the server, ignore the button signal of the power button;

If there is no connection with the server, then according to the button signal of the power button, control the power on and off of the own system accordingly.
3. The power control method of the server expansion system of claim 1, wherein when the expansion system is not provided with a power button, the power control method further comprises:

If there is no connection with the server, keep the own system in the shutdown state.
A server expansion system is characterized by comprising:

Memory, used to store computer programs;

A processor connected to the S0 power detection terminal and S5 power detection terminal of the server when the system is online, and is used to implement the power supply of the server expansion system according to any one of claims 1-6 when the computer program is executed. Steps of the control method.
7. The server expansion system of claim 7, wherein the processor is connected to the SO power detection terminal and the S5 power detection terminal on the server through an OCP Mezz interface or a PCIe interface when the system is online.
The server expansion system according to claim 7, wherein the processor is specifically a CPLD, FPGA, or MCU;

Correspondingly, the server expansion system further includes:

A voltage divider circuit provided between the processor and the server is used to divide the power detection signal of the server to reduce it to a voltage value that the processor can detect.