CN111045873B - Method for detecting plug-pull stability of PCIE (peripheral component interface express) external equipment - Google Patents
Method for detecting plug-pull stability of PCIE (peripheral component interface express) external equipment Download PDFInfo
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- 230000004044 response Effects 0.000 claims abstract description 27
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- 238000011010 flushing procedure Methods 0.000 claims description 2
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- 230000008569 process Effects 0.000 description 8
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
- G06F11/221—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test buses, lines or interfaces, e.g. stuck-at or open line faults
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2268—Logging of test results
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2273—Test methods
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4081—Live connection to bus, e.g. hot-plugging
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0026—PCI express
Abstract
The invention provides a method for detecting the plugging and unplugging stability of PCIE external equipment, which comprises the following steps: inserting PCIE external equipment into a server; recording basic information and a communication state of the in-place equipment, and clearing error state information of AER; in response to the fact that one of the external devices is detected to be pulled out and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not null, recording the inconsistent information and/or the error state information, and clearing the error state information again; and recording inconsistent information and/or error state information in response to the detection that one of the external devices is inserted again and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not null. By using the method of the invention, the error information of the equipment can be recorded without checking the equipment one by one; all results are collected into a log file, and the checking and backtracking can be conveniently carried out.
Description
Technical Field
The present invention relates to the field of computers, and in particular, to a method for detecting the plug-in stability of a PCIE external device.
Background
Due to the need for external communication in the server, various PCIE devices are required to communicate with the external device. The hot plug and unplug maintenance process of the extrapolation PCIE device is one of the main indicators of the easy maintainability of the server. During the hot plug process, the extrapolation PCIE device cannot cause a server exception, such as causing other extrapolation PCIE losses, an operating system crash or a restart.
In the process of inserting and pulling the extrapolation PCIE card, other abnormalities are caused by detection and judgment, except that the halt and the restart of an operating system are more visual, the other abnormalities are all dull, and parameters need to be searched one by one for confirmation.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method for detecting the plugging and unplugging stability of a PCIE external device, which can record device error information without checking the device by device; all results are collected into a log file, and the checking and backtracking can be conveniently carried out.
Based on the above object, an aspect of the embodiments of the present invention provides a method for detecting the plugging and unplugging stability of a PCIE external device, including the following steps:
inserting PCIE external equipment into a server;
recording basic information and communication state of the in-place equipment, and clearing error state information of AER (advanced error reporting mechanism);
in response to the fact that one of the external devices is pulled out and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not empty, recording the inconsistent information and/or the error state information, and emptying the error state information again;
and recording inconsistent information and/or error state information in response to the fact that one of the external devices is detected to be inserted again and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not null.
According to one embodiment of the present invention, the basic information of the device includes a BDF (bus number device number function number) and a name of the device, the communication status includes a bandwidth and a transmission rate, and the error status information includes CE (recoverable error) and UCE (unrecoverable error) information.
According to an embodiment of the invention, the method further comprises: and recording the number of CPUs and the capacity of the memory.
According to one embodiment of the invention, the number of CPUs is obtained and recorded through a 1scpu command, and the capacity of the memory is obtained through the recording of dmesg.
According to an embodiment of the invention, the method further comprises: and recording inconsistent information in response to the fact that one of the external devices is detected to be pulled out and the current CPU number and the capacity of the internal memory are inconsistent with the records.
According to one embodiment of the invention, the plug-in or plug-out of the external device is detected through the driver and the log under the operating system.
According to an embodiment of the present invention, in response to detecting that one of the external devices is unplugged and that the basic information and the communication status of the currently-in-place device are inconsistent with the record and/or the error status information is not empty, recording the inconsistent information and/or the error status information, and clearing the error status information again includes:
judging whether the basic information of the equipment inconsistent with the record is the basic information of the pulled-out external equipment or not;
and in response to not, recording basic information of the equipment inconsistent with the record.
According to an embodiment of the present invention, in response to detecting that one of the external devices is unplugged and that the basic information and the communication status of the currently-in-place device are inconsistent with the record and/or the error status information is not null, recording the inconsistent information and/or the error status information, and clearing the error status information again includes:
judging whether the communication state of each external device is consistent with the communication state in the record;
in response to the inconsistency, the name of the device and the current communication status are recorded.
According to an embodiment of the present invention, in response to detecting that one of the external devices is unplugged and that the basic information and the communication status of the currently-in-place device are inconsistent with the record and/or the error status information is not empty, recording the inconsistent information and/or the error status information, and clearing the error status information again includes:
by directly reading the information of the error state of the AER through lscpi, the occurrence of the corresponding bit represents that an error occurs, and the error state information of the error is recorded.
According to one embodiment of the invention, flushing the error status information in the AER comprises: and setting all bits of the address corresponding to the error information to be 1.
The invention has the following beneficial technical effects: the method for detecting the plug-in stability of the PCIE external device provided by the embodiment of the invention inserts the PCIE external device into a server; recording basic information and a communication state of the in-place equipment, and clearing error state information of AER; in response to the fact that one of the external devices is pulled out and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not empty, recording the inconsistent information and/or the error state information, and emptying the error state information again; in response to the fact that one of the external devices is detected to be inserted again, and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not null, the technical scheme of recording the inconsistent information and/or the error state information can record the error information of the devices without checking the devices one by one; all results are collected into a log file, and the checking and backtracking can be conveniently carried out.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for detecting the plug-in stability of a PCIE external device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
Based on the foregoing objective, a first aspect of the embodiments of the present invention provides an embodiment of a method for detecting plug and unplug stability of a PCIE external device. Fig. 1 shows a schematic flow diagram of the method.
As shown in fig. 1, the method may include the steps of:
s1, inserting PCIE external equipment into a server;
s2, recording basic information and a communication state of the in-place equipment, and clearing error state information of AER;
s3, in response to the fact that one of the external devices is pulled out and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not empty, recording the inconsistent information and/or the error state information, and emptying the error state information again:
and S4, in response to the fact that one of the external devices is inserted again and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not null, recording inconsistent information and/or error state information.
Through the technical scheme, the error information of the equipment can be recorded without checking the equipment one by one; all results are collected into a log file, and the checking and backtracking can be conveniently carried out.
In a preferred embodiment of the present invention, the basic information of the device includes the BDF and name of the device, the communication status includes bandwidth and transmission rate, and the error status information includes CE and UCE information.
In a preferred embodiment of the present invention, the BDF and name (basic information) and the bandwidth and transmission rate (communication status) recorded on the bit device include: and carrying out one-to-one correspondence on the BDF and the name of the on-site equipment. Recording the BDFs and names of all in-place devices, making one-to-one correspondence between the BDFs and the device names, and using the BDFs and the device names as judgment bits for comparing whether the devices are out of order or lost in the following plugging and unplugging process, wherein if the correspondence between the BDFs and the device names is abnormal, the BDFs and the device names indicate that the devices are out of order or extra devices are lost. When a problem occurs, the information can be used for quickly judging which equipment has the problem. Meanwhile, the theoretical maximum bandwidth/rate and the current bandwidth/rate of all the in-place devices need to be detected to check whether the in-place devices are in a correct state currently, and if the theoretical maximum bandwidth/rate and the current bandwidth/rate are the same, the in-place devices are in a correct state currently.
In a preferred embodiment of the invention, the method further comprises: and recording the number of CPUs and the capacity of the memory. In a preferred embodiment of the present invention, the CPU count is obtained and recorded by a 1scpu command, and the memory capacity is obtained by a record of dmesg. The number of CPUs can be directly acquired by an lscpu or the like command, such as lscpu | grep. The memory capacity identified by the system can be obtained laterally. When the operating system is started, all memory capacities are detected and then recorded in the dmesg, and all memory capacities identified by the current operating system can be acquired from the dmesg.
In a preferred embodiment of the invention, the method further comprises: and recording inconsistent information in response to the fact that one of the external devices is detected to be pulled out and the current CPU number and the capacity of the internal memory are inconsistent with the records.
In a preferred embodiment of the present invention, the insertion or extraction of the external device is detected by a driver and a log under the operating system. When a device is unplugged, it needs to be able to detect that it is unplugged, to trigger subsequent information acquisition and comparison. When the external plug-in device is pulled out, the information of the external plug-in device is informed to the corresponding driver of the operating system through the PCIE protocol, so that whether the device is pulled out or not can be judged through the driver and the log under the operating system. And continuously monitoring the last line of the system log, stopping monitoring the system log when a log keyword of the pulled-out equipment appears, and starting to enter the subsequent steps. When a device is inserted, it needs to be able to detect that it is inserted to trigger subsequent information acquisition and comparison. When the external plug-in device is plugged in, the external plug-in device sends information to a corresponding driver of the operating system through a PCIE protocol to inform the corresponding driver of the external plug-in device of the information, so that whether the device is plugged in or not can be judged through the driver and the log under the operating system. By continuously monitoring the last line of the system log, when a log key word inserted by the device appears, the monitoring of the system log is stopped, and the subsequent steps are started.
In a preferred embodiment of the present invention, in response to detecting that one of the external devices is unplugged and that the basic information and the communication status of the currently-in-place device are inconsistent with the record and/or the error status information is not empty, recording the inconsistent information and/or the error status information, and clearing the error status information again includes:
judging whether the basic information of the equipment inconsistent with the record is the basic information of the pulled-out external equipment or not;
in response to not, recording basic information of the device that is inconsistent with the record.
Firstly, checking whether all the current BDFs are in the recorded information or not, whether the names of all the current extrapolation devices are in the recorded information or not, and only the BDFs and the names of the unplugged devices are missing in a normal state. When only one BDF and name are missing, it is verified from the recorded information whether the missing device is a unplugged device or not. If there are multiple BDFs and names missing, it is indicated that there are additional devices missing. It is possible to find which device is lost from the BDF information that is not in the recorded information in the current state. The BDF and name information of the additionally lost device are recorded.
In a preferred embodiment of the present invention, in response to detecting that one of the external devices is unplugged and that the basic information and the communication status of the currently-in-place device are inconsistent with the record and/or the error status information is not empty, recording the inconsistent information and/or the error status information, and clearing the error status information again includes:
judging whether the communication state of each external device is consistent with that in the record or not;
in response to the inconsistency, the name of the device and the current communication status are recorded.
And detecting the theoretical maximum bandwidth/rate and the current bandwidth/rate of all the in-place extrapolation devices, comparing the theoretical maximum bandwidth/rate and the current bandwidth/rate with the related content in the recorded information, and checking which device has the changed bandwidth/rate. If the change occurs, the BDF and name information of the abnormal device, the large bandwidth/speed before and after the problem occurs and the current bandwidth/speed information are recorded.
In a preferred embodiment of the present invention, in response to detecting that one of the external devices is unplugged and that the basic information and the communication status of the currently-in-place device are inconsistent with the record and/or the error status information is not empty, recording the inconsistent information and/or the error status information, and clearing the error status information again includes:
by directly reading the information of the error state of the AER through lscpi, the occurrence of the corresponding bit represents that an error occurs, and the error state information of the error is recorded.
And detecting the states of CE and UCE in AER of all the extrapolation devices in place to see whether the data transmission is recorded in error. The CE and UCE information of AER directly displayed in lscpi can be read directly, and the corresponding bit is present + to represent that an error has occurred. If the device has errors, recording the BDF and the name of the corresponding device and the CE/UCE information after the errors occur. The AER information for all devices is then cleared to record CE/UCE error information when devices are subsequently inserted. All devices with AER attributes are found and then all CE and UCE addresses are set to 1 to clear all AER error information.
In a preferred embodiment of the present invention, clearing the error status information in the AER comprises: all bits of the address corresponding to the error information are set to 1. The records of CE and UCE in the AER of all the bit devices are emptied. And the judgment bit is used for detecting whether signal errors occur in the later plugging and unplugging process.
Not all of the extrapolation devices have the AER functionality, so it is decided first which devices have this functionality. According to the PCIE standard, the address of CE is AER address +0x10, and the address of UCE is AER address +0x04. For equipment with an AER function, acquiring an address of the AER through lspci, and then adding corresponding offset to acquire addresses of CE and UCE; setting all bits of the addresses corresponding to the CE and the UCE to be 1 indicates clearing all errors, and using a setpci command to set the addresses to be one in combination with the address obtained in the last step to clear all the error bits. For example: setpci-s $ { BDF } "$ { addr _ uce/addr _ ce }". L =0xffff.
Through the technical scheme, the error information of the equipment can be recorded without checking the equipment one by one; all results are collected into a log file, and the checking and backtracking can be conveniently carried out.
It should be noted that, as can be understood by those skilled in the art, all or part of the processes in the methods of the embodiments described above can be implemented by instructing relevant hardware by a computer program, and the program may be stored in a computer-readable storage medium, and when executed, the program may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like. The embodiments of the computer program may achieve the same or similar effects as any of the above-described method embodiments corresponding thereto.
Furthermore, the method disclosed according to an embodiment of the present invention may also be implemented as a computer program executed by a CPU, and the computer program may be stored in a computer-readable storage medium. The computer program, when executed by the CPU, performs the above-described functions defined in the method disclosed in the embodiments of the present invention.
It should be particularly noted that the embodiment of the system described above employs the embodiment of the method described above to specifically describe the working process of each module, and those skilled in the art can easily think that the modules are applied to other embodiments of the method described above.
Further, the above-described method steps and system units or modules may also be implemented using a controller and a computer-readable storage medium for storing a computer program for causing the controller to implement the functions of the above-described steps or units or modules.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments of the present invention.
The embodiments described above, particularly any "preferred" embodiments, are possible examples of implementations and are presented merely to clearly understand the principles of the invention. Many variations and modifications may be made to the above-described embodiments without departing from the spirit and principles of the technology described herein. All such modifications are intended to be included within the scope of this disclosure and protected by the following claims.
Claims (7)
1. A method for detecting the plug-in stability of PCIE external equipment is characterized by comprising the following steps:
inserting PCIE external equipment into a server;
recording basic information and a communication state of the in-place equipment, and clearing error state information of AER;
in response to detecting that one of the external devices is pulled out and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not null, recording inconsistent information and/or the error state information, and clearing the error state information again, the method comprises the following steps:
judging whether the basic information of the equipment inconsistent with the record is the basic information of the pulled-out external equipment or not;
in response to not, recording basic information of the equipment inconsistent with the record;
in response to detecting that one of the external devices is inserted again and the basic information and the communication state of the current in-place device are inconsistent with the record and/or the error state information is not null, recording inconsistent information and/or the error state information; and
recording the number of CPUs and the capacity of a memory;
and recording inconsistent information in response to the fact that one of the external devices is detected to be pulled out and the current CPU number and the capacity of the internal memory are inconsistent with the records.
2. The method of claim 1, wherein the basic information of the device comprises a BDF and a name of the device, wherein the communication status comprises a bandwidth and a transmission rate, and wherein the error status information comprises CE and UCE information.
3. The method of claim 1, wherein the CPU count is obtained and recorded via a 1scpu command, and the memory capacity is obtained via a record of dmesg.
4. The method of claim 1, wherein the plug-in or plug-out of the peripheral device is detected by a driver and a log under an operating system.
5. The method according to claim 1, wherein in response to detecting that one of the external devices is pulled out and that the basic information and the communication status of the currently-in-place device are inconsistent with the record and/or the error status information is not empty, recording inconsistent information and/or the error status information, and clearing the error status information again comprises:
judging whether the communication state of each external device is consistent with the communication state in the record;
in response to the inconsistency, the name of the device and the current communication status are recorded.
6. The method according to claim 1, wherein in response to detecting that one of the peripheral devices is unplugged and that the basic information and the communication status of the currently-in-place device are not consistent with the record and/or the error status information is not empty, recording inconsistent information and/or the error status information and clearing the error status information again comprises:
and directly reading the information of the error state of the AER through lscpi, wherein the occurrence of a + bit of a corresponding bit indicates that an error occurs, and recording the error state information of the error.
7. The method of claim 1, wherein flushing error status information in an AER comprises: and setting all bits of the address corresponding to the error information to be 1.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106502814A (en) * | 2016-10-19 | 2017-03-15 | 杭州迪普科技股份有限公司 | A kind of method and device of record PCIE device error message |
| CN109885521A (en) * | 2019-02-28 | 2019-06-14 | 苏州浪潮智能科技有限公司 | A kind of interruption processing method, system and electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106502814A (en) * | 2016-10-19 | 2017-03-15 | 杭州迪普科技股份有限公司 | A kind of method and device of record PCIE device error message |
| CN109885521A (en) * | 2019-02-28 | 2019-06-14 | 苏州浪潮智能科技有限公司 | A kind of interruption processing method, system and electronic equipment and storage medium |
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