CODEWITHSUNDEEP
susesles
MBoy
MBoy

Reputation: 23

SLES crash dump

I would like to test whether my server creating a crash dump upon a OS crash. I can see the /etc/sysconfig/kdump config file is configured.

So I issued the command to kernel panic echo c > /proc/sysrq-trigger so it crashed the server but it never create a dump file for some reason. This is HP BL460g7 blade with ASR disabled.

When I trigger the kernel panic it crashed but stays about 10 minutes (looks like its trying to save a crash dump) but it never. I checked the message logs but cannot see reason why its not dumping. Main problem is how do I find why it's not dumping a crash file, is there are any logs I can check what has really gone wrong?

I'm using SUSE Linux Enterprise Server 11 (x86_64) SP 1.

Upvotes: 2

Views: 2008

Answers (1)

CupRacer
CupRacer

Reputation: 149

Did you follow the steps explained here?

SUSE Support - Configure kernel core dump capture

The most important tasks should be:

  • install kdump, kexec-tools and makedumpfile
  • add crashkernel=... to the kernel command line (Grub)
  • chkconfig boot.kdump on
  • ensure that you have enough free space in /var/crash (default dir)

Then please reboot your system and run:

sync; echo c >/proc/sysrq-trigger

After another boot please check for new files in /var/crash. If this doesn't work for you, please show us the content of /etc/sysconfig/kdump and at least the output of

cat /proc/cmdline
chkconfig boot.kdump

Do you have a display connected to the machine?

Upvotes: 0

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