Rhel6.4 kernel dump and view

I. installation package:

1. Crash (installed through YUM)

2. kernel-debuginfo-2.6.32-358.el6.x86_64.rpm

3. kernel-debuginfo-common-x86_64-2.6.32-358.el6.x86_64.rpm

 

2. Enable the kdump service:/etc/init. d/kdump start

Note: The kdump service is enabled by default in the rhel6.4 system installed through Kickstart.

Confirm that the kdump service is enabled:/etc/init. d/kdump status. If the output kdump is operational, the kdump service is successfully enabled.

 

3. view the dump file

After the kernel crash, a dump file is generated in the/var/crash/directory, for example:

/Var/crash/127.0.0.1-2014-05-07-15:24:33/

The vmcore-dmesg.txt and vmcore-dmesg.txt files are generated in the directory:

Vmcore: memory dump during kernel crash

Vmcore-dmesg.txt: saves the dmesg information at this point during kernel crash

View the vmcore command: crash/usr/lib/debug/lib/modules/2.6.32-358. el6.x86 _ 64/vmlinux./vmcore

The output

Rhel6.4-kernel-dump1

 

Enter BT

Rhel6.4-kernel-dump2

In the figureCommand: "crash_test.sh"Indicates that crash is triggered by the crash_test.sh program.

Appendix:

1. Manually trigger the kernel crash method echo C>/proc/sysrq-trigger

2. Crash>Interactive Common commands:

?View help. There are many commands to view the current process, memory, module, and so on.

Help BTView BT Command help

Rhel6.4 kernel dump and view