CN106571954A - Abnormal restart reason detecting method and device of AP equipment - Google Patents
Abnormal restart reason detecting method and device of AP equipment Download PDFInfo
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- CN106571954A CN106571954A CN201610933610.6A CN201610933610A CN106571954A CN 106571954 A CN106571954 A CN 106571954A CN 201610933610 A CN201610933610 A CN 201610933610A CN 106571954 A CN106571954 A CN 106571954A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/069—Management of faults, events, alarms or notifications using logs of notifications; Post-processing of notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Retry When Errors Occur (AREA)
- Debugging And Monitoring (AREA)
Abstract
The invention discloses an abnormal restart reason detecting method and device of AP equipment. The method comprises that before that the AP equipment is restarted, a restart reason sign and a restart log corresponding to a restart reason in this time are written in a reserved memory; when the AP equipment is restarted, a virtual address of the reserved memory is obtained by mapping; restart log information in the reserved memory is backed up, and present serial-port printing information is recorded in real time; and the restart reason sign and the restart log in the reserved memory are read and stored. According to the method and device, concrete reasons for restart of the AP equipment can be determined, the fault positioning efficiency and accuracy of the AP equipment are improved greatly, and the stability of subsequent version iteration is guaranteed.
Description
Technical field
The present invention relates to field of wireless, the abnormal restarting reason detection method and dress of more particularly to a kind of AP equipment
Put.
Background technology
WLAN (Wireless Local Area Networks, WLAN) provides a kind of wirelessly connecting for LAN
Service is connect, the wireless data access of high speed can be provided in less scope, be current IT (Information
One of Technology, information technology) the more popular technology of industry, it is also popular wireless access way.
Compare with the Wired access mode of transmission, WLAN is freer by the use of network, has thoroughly broken away from cable
With the constraint of port position, and WLAN have be easy to carry, in mobile advantage, to remove from or reduce and be numerous and diverse
Network layout, it is only necessary to lay one or more AP (Access Point, access point) equipment just can set up covering entirely build
Build or area LAN.
AP equipment is the important composition equipment of WLAN, and it is a wireless transmitting-receiving equipments, can be by from wired network
The data that network (such as Internet) is received are converted to wireless signal transmission, and the wireless signal for receiving is converted into into data simultaneously
It is forwarded to cable network.WLAN constructed by WLAN technologies, as the supplement of cable network, has broken away from the beam of Ethernet
Tie up, to terminal use conveniently network access mode is provided, therefore, wireless network has obtained increasing deployment,
Substantial amounts of AP equipment is mounted and uses.
AP equipment sometimes occurs in use situation about restarting, but the reason for for restarting, does not also have at present
There is the clear and definite targeting scheme of comparison.Although at present some AP equipment occur in that the functional module of log, for example, when
Meeting log during device core abnormal restarting, but existing Ap equipment Record Systems crash log function is all relatively simple, according to
The daily record of its record cannot in detail distinguish the reason for restarting, and this just have impact on the stability test of version and version is issued,
So as to affect the iteration and stability of later stage version.
The content of the invention
To overcome the shortcomings of that above-mentioned prior art is present, the purpose of the present invention is to provide a kind of abnormal restarting of AP equipment
Reason detection method and device, it can determine the concrete reason that each AP equipment is restarted, and substantially increase AP equipment fault problems
The efficiency and accuracy of positioning, has ensured the stability of version successive iterations.
It is that, up to above-mentioned purpose, the present invention proposes a kind of abnormal restarting reason detection method of AP equipment, comprises the steps：
Step one, before the AP equipment is restarted, writes this time and restarts that reason is corresponding to restart reason mark in reserved internal memory
And restart daily record；
Step 2, when the AP equipment is restarted, mapping obtains the virtual address of the reserved internal memory；
Step 3, backs up the log information of restarting in the reserved internal memory, and the current serial printing information of real time record；
Step 4, reads restarting reason mark and restart daily record and preserved in the reserved internal memory.
Further, the reserved internal memory includes successively from high to low：
A areas, indicate for preserving the reason for restarting；
B areas, are mapped to the buffer circle of the AP device systems, for preserving current serial printing information in real time；
C areas, for the backup to B areas.
Further, behind C areas, the reserved internal memory also includes D areas, detailed for serial ports when preserving kernel fault generation
Log information.
Further, reserved interior one section of high memory for saving as the AP equipment.
Further, in step 4, restarting after the preservation of reason mark, the reserved internal memory in the reserved internal memory
A distinctive emblems are entered as default value again.
Further, it is by ioremap functions that the physical address map of the reserved internal memory is virtual to this in step 2
Address.
Further, in step 4, read in the reserved internal memory by reading proc file system and restart reason mark
And restart daily record, and preserve to tmp catalogue files.
To reach above-mentioned purpose, the present invention also provides a kind of abnormal restarting reason detection means of AP equipment, including：
Restart pretreatment unit, before the AP equipment is restarted, write this time in reserved internal memory and restart that reason is corresponding to restart
Reason mark and restart daily record；
Address mapping unit, when the AP equipment is restarted, mapping obtains the virtual address of the reserved internal memory；
Log information back up and recording unit, for backing up the reserved internal memory in restart log information, and real time record
Current serial printing information；
Restart reason acquiring unit, for reading the reserved internal memory in restart reason mark and restart daily record and protected
Deposit.
Further, the reserved internal memory includes successively from high to low：
A areas, indicate for preserving the reason for restarting；
B areas, are mapped to the buffer circle of the AP device systems, for preserving current serial printing information in real time；
C areas, for the backup to B areas.
Further, behind C areas, the reserved internal memory also includes D areas, detailed for serial ports when preserving kernel fault generation
Log information.
Compared with prior art, a kind of abnormal restarting reason detection method and device of AP equipment of the invention is by using pre-
The mode of high memory is stayed, and reserved high memory is divided into into different regions, preserved in reserved high memory and restart original
Cause, and mapped system buffer circle, backup restarts daily record to the reserved high memory, reads finally by file system is read
Restart reason and restart daily record and preserve to storage device, the present invention not only can analyze the daily record restarted, it may also be determined that equipment
The concrete reason restarted, substantially increases the efficiency and accuracy of failure problems positioning, has ensured stablizing for version successive iterations
Property.
Description of the drawings
The step of Fig. 1 is a kind of abnormal restarting reason detection method of AP equipment of the invention flow chart；
Fig. 2 is the subregion schematic diagram that high memory is reserved in the specific embodiment of the invention；
Fig. 3 is several concrete meaning schematic diagrams for restarting reason mark in specific embodiment of the invention Tu2Zhong A areas
Fig. 4 is several generation schematic diagrams for restarting reason mark in the specific embodiment of the invention；
Fig. 5 is the schematic flow sheet in the specific embodiment of the invention after system start-up；
Fig. 6 is a kind of structural representation of the abnormal restarting reason detection means of AP equipment of the invention.
Specific embodiment
Below by way of specific instantiation and embodiments of the present invention are described with reference to the drawings, those skilled in the art can
The further advantage and effect of the present invention are understood easily by content disclosed in the present specification.The present invention also can be different by other
Instantiation implemented or applied, the every details in this specification also can based on different viewpoints with application, without departing substantially from
Various modifications and change are carried out under the spirit of the present invention.
The step of Fig. 1 is a kind of abnormal restarting reason detection method of AP equipment of the invention flow chart.As shown in figure 1, this
A kind of abnormal restarting reason detection method of AP equipment is invented, is comprised the steps：
Step 101, before the system reboot of the AP equipment, writes this time and restarts reason pair in the reserved internal memory of the AP equipment
That what is answered restarts reason mark and restarts daily record.
In the present invention, system has reserved one section of internal memory, the reserved internal memory be used for storing the flag bit of restarting reason and
Daily record is restarted in storage, and after system is restarted in the case of not power-off, the content inside the reserved internal memory still can retain (due to electricity
The effect of appearance, in the case where power-off interval time is very short, content also can retain veneer), it is possible to using the reserved internal memory
To preserve the log daily records before restarting, and it is further analyzed and processes according to daily record is restarted.
In the specific embodiment of the invention, system has reserved the high memory of 1M, i.e. the device memory of such as 128M, is
The 1M internal memories remained between 127-128 unite as reserved internal memory, and is divided into following several intervals, as shown in Figure 2：
A areas：Size is 4k, is indicated for preserving the reason for restarting；
B areas：Size is 128k, is mapped to the ring buffer (buffer circle) of linux, for preserving current in real time
Serial printing information；
C areas：Size is 128k, for the backup in B areas, because after system reboot, the 128k spaces in B areas can be output
Serial printing information (content of printk functions output) is covered, therefore, need to first back up serial ports log information (the i.e. B before restarting
The content in area) to C areas；
D areas：Size is 764k, for preserving serial ports more detailed logging letter when Kernel Panic (kernel fault) occur
Breath, that is to say, that when it is kernel fault to restart reason, will not only restart daily record write B areas, and preserve more detailed in D areas
Thin serial ports log information, so as to follow-up analyzing and processing.
Fig. 3 is several concrete meaning schematic diagrams for restarting reason mark in specific embodiment of the invention Tu2Zhong A areas.At this
In invention specific embodiment, the ANSCII codes that reason mark uses correspondence letter are restarted, substantially can divide the reason for restart
For following several situations：
1) reb, represents that reboot orders are restarted, and it is restarted reason and is masked as 0x726562, wherein, 0x72,0x65,0x62
Letter r, e, b are corresponded to respectively；
2) pan, represents that kernel fault (panic) is restarted, 0x70616e, wherein, 0x70,0x61,0x6e correspond to respectively word
Female p, a, n；
3) dog, represents that house dog is restarted, and it is restarted reason and is masked as 0x646f67, wherein, 0x64,0x6f, 0x67 difference
Correspondence letter d, o, g；
4) non-above-mentioned 3 kinds of numerical value, expression system is electrifying startup.
Fig. 4 is several generation schematic diagrams for restarting reason mark in the specific embodiment of the invention.For restarting reason reb,
When kernel receives reboot command words：Original is restarted in A areas write during LINUX_REBOOT_CMD_RESTART in reserved internal memory
Because of flag：0x726562；When there is kernel fault (panic), the increase in kernel panic functions is processed, in reserved internal memory
A areas write restart reason：0x70616e；Restart reason mark and be defaulted as house dog and restart (0x646f67), i.e. system start-up
During can first inquire about this and restart reason mark, assign default value 0x646f67 after preservation again and give the mark；Non- above reason is then
It is considered electrifying startup.
Step 102, when the AP device systems are restarted, mapping obtains the virtual address of the reserved internal memory.
In the specific embodiment of the invention, the 1M spaces of above-mentioned reserved high memory can be protected in advance in system start-up
Stay, then by ioremap functions by the physical address map of the reserved high memory to virtual address, retain this virtually
Location, follow-up associative operation is carried out around the virtual address.
Step 103, backs up and log information is restarted in the reserved internal memory, the current serial printing information of real time record.At this
In invention specific embodiment, before system reboot, the B areas preservation for reserving internal memory is to restart log information before restarting, due to being
After system is restarted, the content that the 128k spaces in B areas can be exported by printk functions is covered, therefore, the serial ports daily record before need to restarting
Information (restarting daily record) backs up to C areas, and B areas then can (the i.e. printk functions output of the current serial printing information of real time record
Content).
Step 104, reads restarting reason mark and restart daily record and preserved in the reserved internal memory.In present invention tool
In body embodiment, 2 proc file nodes can be set up in system starting process：/proc/kmsg_reboot_log；/proc/
Kmsg_reboot_reason, corresponds to respectively and restarts daily record and restart reason, and system can remove the mark for checking A areas in start-up course
Will position, judges to restart and preserve after reason this to restart reason inner to tmp catalogue files (/tmp/log_reboot_reason)
Face, is then entered as 0x646f67 (being defaulted as the flag of house dog) again the A distinctive emblems of reserved high memory；Protect simultaneously
Deposit and restart daily record to tmp catalogue files：/tmp/log_reboot_message.
Fig. 5 is the schematic flow sheet in the specific embodiment of the invention after system start-up.Below will be by a specific embodiment
Further illustrate the present invention：Upon power-up of the system, 1M high memories are reserved under UBOOT, boot kernel simultaneously starts kernel (start_
kernel)；Kernel reserves high-end 1M internal memories；Obtain the physical address of reserved high memory；Gone out using ioremap Function Mappings
Reserved high memory, obtains virtual address and preserves；The log information back-ups in B areas in reserved high memory to C areas；
B areas memory headroom indirect assignment in reserved high memory is mapped to the buffer circle (ring buffer) of linux；In advance
The current printk serial printing informations of the B real time record of the high memory for staying；Set up proc file nodes；Read reserved height
Restarting reason mark and restarting daily record for end memory, prints to serial ports, while be saved in tmp catalogues, subsequently can select by
Daily record is uploaded to high in the clouds, in order to high in the clouds analysis.
Through the present invention, it is possible to obtain the reason for AP equipment is restarted, and the log information before equipment is restarted is saved, had
Help the analyzing and processing to restarting reason, substantially increase the stability of version iteration.
Fig. 6 is a kind of structural representation of the abnormal restarting reason detection means of AP equipment of the invention.As shown in fig. 6, this
A kind of abnormal restarting reason detection means of AP equipment is invented, including：Restart pretreatment unit 601, address mapping unit 602,
Log information is backed up and recording unit 603 and restarts reason acquiring unit 604.
Pretreatment unit 601 is restarted, for before triggering system reboot, writing this time in reserved internal memory and restarting reason correspondence
Restart reason mark and restart daily record.
In the present invention, system has reserved one section of internal memory, the reserved internal memory be used for storing the flag bit of restarting reason and
Daily record is restarted in storage.In the specific embodiment of the invention, system has reserved the high memory of 1M, i.e. in the equipment of such as 128M
Deposit, system remains 1M internal memories between 127-128 as reserved internal memory, and is divided into following several intervals：
A areas：Size is 4k, is indicated for preserving the reason for restarting；
B areas：Size is 128k, is mapped to the ring buffer (buffer circle) of linux, for preserving current in real time
Serial printing information；
C areas：Size is 128k, for the backup in B areas.Because after system reboot, the 128k spaces in B areas can be by current defeated
The serial printing information (content of printk functions output) for going out is covered, therefore, need to first back up the serial ports log information before restarting
(i.e. the content in B areas) is to C areas；
D areas：Size is 764k, for preserving serial ports more detailed logging letter when Kernel Panic (kernel fault) occur
Breath, that is to say, that when it is kernel fault to restart reason, will not only restart daily record write B areas, and preserve more detailed in D areas
Thin serial ports log information, so as to follow-up analyzing and processing.
In the specific embodiment of the invention, the ANSCII codes that reason mark uses correspondence letter, the original restarted are restarted
Because can substantially be divided into following several situations：
1) reb, represents that reboot orders are restarted, corresponding to restart reason and be masked as 0x726562, wherein, 0x72,0x65,
0x62 corresponds to respectively letter r, e, b.When kernel receives reboot command words：In pre- during LINUX_REBOOT_CMD_RESTART
Reason mark is restarted in the A areas write for staying internal memory：0x726562；
2) pan, represents that kernel fault (panic) is restarted, corresponding to restart reason and be masked as 0x70616e, wherein, 0x70,
0x61,0x6e corresponds to respectively letter p, a, n.When kernel fault occur and restarting, the increase in kernel panic functions is processed, in
Reason is restarted in the A areas write of reserved internal memory：0x70616e；
3) dog, represents that house dog is restarted, corresponding to restart reason and be masked as 0x646f67, wherein, 0x64,0x6f, 0x67
Letter d, o, g are corresponded to respectively.The reason mark of restarting in A areas is defaulted as house dog and restarts (0x646f67), i.e. system starting process
In can first inquire about and restart reason mark, assign default value 0x646f67 after preservation again and give the mark.
4) non-above-mentioned 3 kinds of numerical value, then it represents that system is electrifying startup.
Address mapping unit 602, when system start-up, mapping obtains the virtual address of the reserved internal memory.
In the specific embodiment of the invention, the 1M spaces of high memory can advance in system start-up, address of cache
Unit 602 can utilize ioremap functions by the physical address map of the reserved high memory to virtual address, retain this virtual
Address.
Log information is backed up and recording unit 603, for backing up the reserved internal memory in restart log information, and remember in real time
The current serial printing information of record is to the reserved internal memory.In the specific embodiment of the invention, before system reboot, the B of internal memory is reserved
What area preserved is to restart log information before restarting, and after system reboot, the 128k spaces in B areas can be exported by printk functions
Content cover, therefore, log information backup and recording unit 603 the serial ports log information for restarting front B areas need to be backed up to C
Area, and the current serial printing information of real time record (i.e. the content of printk functions output) is to B areas.
Restart reason acquiring unit 604, for reading the reserved internal memory in restart reason mark and restart daily record and give
To preserve.In the specific embodiment of the invention, reason acquiring unit 704 is restarted in system starting process can set up 2 proc texts
Part node：/proc/kmsg_reboot_log；/ proc/kmsg_reboot_reason, corresponds to respectively and restarts daily record and restart
Reason, reason acquiring unit 604 is restarted in start-up course can remove the flag bit in A areas of the high memory for checking reserved, judge
Go out to restart preserve after reason this and restart reason to tmp catalogue files (/tmp/log_reboot_reason), then reserved
The A distinctive emblems position of high memory be entered as 0x646f67 (being defaulted as the flag of house dog) again, while restarting reason acquisition
Unit 604 can read the daily record of restarting of the reserved high memory, and will restart daily record and preserve to tmp catalogue files：/tmp/
log_reboot_message。
In sum, a kind of abnormal restarting reason detection method and device of AP equipment of the invention is by using reserved high-end
The mode of internal memory, and reserved high memory is divided into into different regions, preserve in reserved high memory and restart reason, and reflect
System buffer circle is penetrated, backup is restarted daily record to the reserved high memory, finally by file system reading is read original is restarted
Because and restart daily record and preserve to storage device, the present invention not only can analyze the daily record restarted, it may also be determined that what equipment was restarted
Concrete reason, substantially increases the efficiency and accuracy of failure problems positioning, has ensured the stability of version successive iterations.
Any those skilled in the art can repair under the spirit and the scope without prejudice to the present invention to above-described embodiment
Decorations and change.Therefore, the scope of the present invention, should be as listed by claims.
Claims (10)
1. a kind of abnormal restarting reason detection method of AP equipment, comprises the steps：
Step one, before the AP equipment is restarted, writes this time and restarts that reason is corresponding to restart reason mark and weight in reserved internal memory
Open daily record；
Step 2, when the AP equipment is restarted, mapping obtains the virtual address of the reserved internal memory；
Step 3, backs up the log information of restarting in the reserved internal memory, and the current serial printing information of real time record；
Step 4, reads restarting reason mark and restart daily record and preserved in the reserved internal memory.
2. a kind of abnormal restarting reason detection method of AP equipment as claimed in claim 1, it is characterised in that the reserved internal memory
Include successively from high to low：
A areas, indicate for preserving the reason for restarting；
B areas, are mapped to the buffer circle of the AP device systems, for preserving current serial printing information in real time；
C areas, for the backup to B areas.
3. the abnormal restarting reason detection method of a kind of AP equipment as claimed in claim 2, it is characterised in that behind C areas, should
Reserved internal memory also includes D areas, for preserving serial ports detailed log information when kernel fault occurs.
4. the abnormal restarting reason detection method of a kind of AP equipment as claimed in claim 3, it is characterised in that：The reserved internal memory
For one section of high memory of the AP equipment.
5. the abnormal restarting reason detection method of a kind of AP equipment as claimed in claim 3, it is characterised in that：In step 4
In, restarting after the preservation of reason mark in the reserved internal memory is entered as default value again the A distinctive emblems of the reserved internal memory.
6. the abnormal restarting reason detection method of a kind of AP equipment as claimed in claim 3, it is characterised in that：In step 2
In, by ioremap functions by the physical address map of the reserved internal memory to the virtual address.
7. the abnormal restarting reason detection method of a kind of AP equipment as claimed in claim 3, it is characterised in that：In step 4
In, restarting reason mark and restart daily record in the reserved internal memory is read by reading proc file system, and preserve to tmp catalogues
File.
8. the abnormal restarting reason detection means of a kind of AP equipment, including：
Restart pretreatment unit, before the AP equipment is restarted, write this time in reserved internal memory and restart that reason is corresponding to restart reason
Indicate and restart daily record；
Address mapping unit, when the AP equipment is restarted, mapping obtains the virtual address of the reserved internal memory；
Log information is backed up and recording unit, for backing up the reserved internal memory in restart log information, and real time record is current
Serial printing information；
Restart reason acquiring unit, for reading the reserved internal memory in restart reason mark and restart daily record and preserved.
9. a kind of abnormal restarting reason detection means of AP equipment as claimed in claim 7, it is characterised in that the reserved internal memory
Include successively from high to low：
A areas, indicate for preserving the reason for restarting；
B areas, are mapped to the buffer circle of the AP device systems, for preserving current serial printing information in real time；
C areas, for the backup to B areas.
10. the abnormal restarting reason detection means of a kind of AP equipment as claimed in claim 9, it is characterised in that：Behind C areas,
The reserved internal memory also includes D areas, for preserving serial ports detailed log information when kernel fault occurs.
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