kdump operates by booting a fresh kernel to capture the context of a crashed kernel, and so the only way for kdump to dump a kernel is to crash it and cause kdump to invoke its post-crash kernel.

You can manually force a running kernel to panic (and invoke a correctly-configured kdump) with the following command sequence:

    echo 1 > /proc/sys/kernel/sysrq
    echo c > /proc/sysrq-trigger

Cheers,
Ben


On 3/25/19 7:19 PM, wuzhouhui wrote:
Hi,

Is there a way to specify kernel version when (re)start kdump
service? Suppose I have install a new kernel and kdump will
generate kdump.img for new kernel in next boot. But I want kdump
to generate kdump.img for new kernel immediately, is it possible?

Thanks.
_______________________________________________
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos


--

Benjamin Hauger
SysAdmin/CSDC-DMO
Rm. 94
x8371
_______________________________________________
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Reply via email to