libvirt users - Sep 2022 - How can I check the history of all console logs starting from the first second of bootup

Gratings:

Recently, I got an error while installing a guest, the error message is
this,:
[image: image.png]

Is there a method to get the full log? I have tried to use virt-install
--console, or attach <log
file="/var/log/libvirt/qemu/guestname-serial0.log"
append="off"/>  to get
the full log, but they didn't work.
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On Thu, Sep 22, 2022 at 10:24:46AM +0800, Lucas Liu
wrote:
>Gratings:
>
>Recently, I got an error while installing a guest, the error message is
>this,:
>[image: image.png]
>
>Is there a method to get the full log? I have tried to use virt-install
>--console, or attach <log
>file="/var/log/libvirt/qemu/guestname-serial0.log"
append="off"/>  to get
>the full log, but they didn't work.
My guess is that the kernel (and bios/uefi) was not set up to output to
a serial console.  You could use virt-install's --boot
bios.useserial=on, or for the kernel to output on the console you might
try kernel_args="console=ttyS0" if you're booting kernel directly,
or
--extra-args "console=ttyS0" if you're installing from --location.
But
that could be changed in the bootloader before choosing the kernel.
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