Log to ttys0 #95
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Log to ttys0 #95
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Add "console=ttyS0,115200n8" to the kernel command line to get kernel ring buffer logging to both serials.
When we use `mxgrub --reboot` we don't want to reuse the previous kernel command line. Generate a new command line for kexec. This way, changes we make to $KERNEL_PARAMETER in this script can be activated by `mxgrub --reboot` as well.
Import existing crashkernel.service into repository.
Add "console=ttyS0,115200n8" to crashkernel commandline as we did for the regular kernel in mxgrub. Also specifiy full command line here instead of appending to the command line of the crashing kernel to get a better defined state.
Add ExecStop to unload the panic kernel. "systemctl stop crashkernel" can be used to disable the panic reboot and free the memory. "systemctl restart crashkernel" can be used to reload the panic kernel.
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Add console=ttyS0... to kernel command line to enable logging f the kernel ring buffer (dmesg) to serial 0 as well. Tested on sigusr2.