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The Disk Space Is Full Because the Core-down Error Regarding the iAFagent Process of the N2000 BMS Continuously Occurs

Publication Date:  2012-07-25 Views:  83 Downloads:  0
Issue Description
The N2000 BMS displays an alarm indicating that the disk space is full. As a result, operations are executed slowly on the N2000 BMS.
The N2000 BMS is in V200R011C03B036. 
Alarm Information
Disk space is full. 
Handling Process
1. Log in to the SysMonitor. The disk space of /opt is full and up to 98% of the disk space is used. For details, see the screenshot attached in this case study.
2. Log in to the N2000 BMS and check the disk space occupied by files in the path /opt.
root#cd /
root#du opt
For the execution result of the command, see the attachment.
3. Import the result obtained by the df �kv command into Excel and sort out the result by using the sequencing function of Excel. You can find that the path /opt/corefiles occupies a great part of the disk space. The result in the Excel format is shown in the attachment.
4. Check files in the path /opt/corefiles. A large number of core files regarding the iAFagent process exist in the path and occupy a great part of the disk space.
5. The N2000 BMS currently does not use the process. Collect the recent core files and send them to the R&D Department for analysis. Stop the process in the watchman and prevent the watchman from monitoring the process. After the core files are deleted from the path /opt/corefiles, the disk usage becomes normal. 
Root Cause
The core-down regarding the iAFagent process continuously occurs, and a large number of core files are generated. Therefore, the disk space is full. 
Frequently check the core files generated in the path /opt/corefilles. In this way, you can monitor the running status of the process, and send the core files to the R&D Department for analysis when a problem occurs. You can also prevent the situation that the disk space is full because certain processes are abnormal and a large number of core files are generated.