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?
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