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Questions tagged [kdump]

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Kernel panic stops in initramfs due to OOM killing lvm

I am trying to force a kernel panic on a ubuntu 14.04 to test kdump. I'm following this tutorial: Ubuntu tutorial I execute the following command: echo c > /proc/sysrq-trigger I then get the ...
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472 views

change the core-dump location - abrtd configuration

I'm trying to change the Linux core-dump location to a different directory using the abrtd configuration (normally it is going to the location core,but according to my research, if you enable abrtd, ...
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1answer
320 views

kdump isnt working on redhat machines

How to force Linux to crash: we installed the kexec-tools (kdump) on our redhat machines ( version 7.1 ) in order to capture problems by creating core file under /var/crash folder we check that ...
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66 views

Getting console or dmesg contents when unable to login after OS crash

Our server Supermicro SYS-6016T-U often crashes due to https://bugs.centos.org/view.php?id=10642 . Since it's unable to write to disk, crash info isn't saved. I also cannot login using either IPMI ...
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2answers
14k views

Why is Linux kdump not writing to /var/crash?

It's happened again! I have 4 servers which are crashing periodically, and there is no information printed to the system logs or the serial console. In addition, the Linux kdump service isn't writing ...
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2answers
1k views

Centos kdump hangs up

Trying kdump on CentOS 6.3. On VMWare everything is fine and on oops crash kernel is loaded and vmcore created. On phisical machine I see oops message, but crash kernel is not started. I used ...
3
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2answers
18k views

Cannot start kdump

My system always crashes down. So I decided to enable kdump to see the problem since I was not able to see possible errors on the log files. I followed the steps to set up kdump from a site here. My ...
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2answers
241 views

Is kdump not installed when /etc/kdump.conf is missing?

I have CentOS 5.8 system. And I want to set up the kdump. I was following this configuration steps on kdump. However I was not able to locate /etc/kdump.conf. I tried using the find and locate command ...
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3answers
773 views

Performance impact of running kdump

We are currently running into an issue on a RHEL 5.6 server. The server randomly becomes unstable, kernel wait messages are showing up in /var/log/messages, and we've now had it reboot twice. We've ...