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Server has continuous beep alarm when I reload the kernel

in flag

Here is the situation:

I have a Lenovo ThinkCentre M900 with Linux CentOS 7.

I tried to do a kernel load (kexec -l + kexec -e), and it works fine, with one problem.

As soon as I enter the kexec -e command, the Server starts a long alarm beep which sadly doesn't stop.

Am I doing something wrong ? How to reload the kernel without really rebooting ?

anx avatar
fr flag
anx
Retry but this time manually unload specific modules before kexecing? (I would start with `modprobe -v -r pcspkr`)
anx avatar
fr flag
anx
You probably want to clarify whether CSM (legacy boot) is disabled and whether you could find any other differences pre/post restart of identical kernel (is a PCIe device failing to show up? anything odd about FAN speed control?)
Samuel PE avatar
in flag
What would unloading modules do ? Isn't the kexec reloading all modules anyway ?
anx avatar
fr flag
anx
Divide and conquer. If you see one modules unload code is triggering your problem, or if only specific concurrent actions trigger the condition, you do not have to look further into what happens *after* the new kernel instance is in control.
Samuel PE avatar
in flag
Ah, I see. But I'm loading the same Kernel. So the modules should be the same. The goal is to bypass the machine's long boot, knowing that some servers take 5 minutes to reach the OS boot.
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