HP Cisco Nexus 5000 Cisco MDS 9000 Family CLI Configuration Guide - Release 4. - Page 1418

Core and Log Files Chapter 59 Monitoring System Processes and Logs Send documentation comments to [email protected] To copy the core and log files periodically, follow these steps: Step 1 Step 2 Step 3 Command switch# show system cores switch# config t switch(config)# system cores slot0:coreSample switch(config)# system cores tftp://1.1.1.1/abcd switch(config)# no system cores Purpose Displays all the core files. Enters configuration mode. Copies the core file (coreSample) to slot 0. Copies the core file (abcd) in the specified directory on the TFTP server at IPv4 address 1.1.1.1. Note You can also use IPv6 addresses to identify the TFTP server. Disables the core files copying feature. Saving the Last Core to Bootflash This last core dump is automatically saved to bootflash in the /mnt/pss/ partition before the switchover or reboot occurs. Three minutes after the supervisor module reboots, the saved last core is restored from the flash partition (/mnt/pss) back to its original RAM location. This restoration is a background process and is not visible to the user. Tip The timestamp on the restored last core file displays the time when the supervisor booted up not when the last core was actually dumped. To obtain the exact time of the last core dump, check the corresponding log file with the same PID. To view the last core information, issue the show cores command in EXEC mode. To view the time of the actual last core dump, issue the show process log command in EXEC mode. Clearing the Core Directory Use the clear cores command to clean out the core directory. The software clears all the core files and other cores present on the active supervisor module. switch# clear cores First and Last Core The first and last core feature uses the limited system resource and retains the most important core files. Generally, the first core and the most recently generated core have the information for debugging and, the first and last core feature tries to retain the first and the last core information. If the core files are generated from active supervisor module, the number of core files for the service is defined in the service.conf file. There is no upper limit on the total number of core files in the active supervisor module. To display the core files saved in the system, use the show cores command: 59-8 Cisco MDS 9000 Family CLI Configuration Guide OL-18084-01, Cisco MDS NX-OS Release 4.x