1.5 KiB
Troubleshoot your troubles
Where is the log?
The logs are stored in /var/log/libvirt/qemu/vm_name.log, where vm_name is the name of the VM you're trying to boot.
By reading the few lines at the bottom of the log file, you get general idea of what might be an issue.
warning: host doesn't support requested feature, what is this?
This warning usually means that the feature guest is requesting is not available on host.
After the warning message, on same line, you'll see something like MSR(490H).vmx-entry-load-perf-global-ctrl
That's the feature it's missing, but I have no idea what most of them indicate.
How to fix it?
Make sure you've enabled Intel VT-d or AMD-Vi in BIOS Settings.
If you've set BIOS as Firmware for Guest, change to UEFI.
In the cpu section in log file, you might see something like this:
-cpu Skylake,vme=on,ss=on,vmx=on,.... Although, it works in most cases, it doesn't in some.
Make sure you've set host-passthrough CPU model which'll produce -cpu host,... instead.
shutting down, reason=failed, but no actual error?
If the VM fails without an error, SSH into your host machine, and run libvirt start script from SSH Client.
If the script works without producing error, you'd get blank screen, and you can try starting VM from SSH Client.
Both commands should be run as superuser.
sh /etc/libvirt/hooks/qemu.d/win10/prepare/begin/start.sh
virsh start win10
If your troubles aren't done yet, I don't have any other ideas.