Show qemu command line from virsh

Question

I am debugging a problem with a libvirt VM starting, and I want to see the exact command line that it is going to use to start qemu. Is this possible using virsh or some other utility?

score 4 · Accepted Answer · answered Aug 24 '15 at 17:54

4

You can consult the libvirt logs in:

/var/log/libvirt/qemu/$vmname.log

Source: https://fedoraproject.org/wiki/Windows_Virtio_Drivers

answered Aug 24 '15 at 17:54

Jonathon Reinhart

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score 2 · Answer 2 · answered Sep 01 '18 at 08:12

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Just saw this question. In the hope it helps others, the easiest way to see the qemu command that was used, while the VM is running, is:

ps -ef | grep qemu-system-x86

answered Sep 01 '18 at 08:12

powerhouse

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Thanks but this doesn't help. Like I said in the question, I was trying to debug a VM that wouldn't start. The qemu process exited immediately, so looking at the running process list doesn't show what I was looking for. – Jonathon Reinhart Sep 01 '18 at 12:25

score 2 · Answer 3 · answered Sep 03 '21 at 17:12

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It is also possible using virsh with the domxml-to-native subcommand:

virsh domxml-to-native qemu-argv --domain mydomain

answered Sep 03 '21 at 17:12

Kevinoid

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Show qemu command line from virsh

3 Answers3