I am trying to inspect a migration failure using the steps described here (https://wiki.qemu.org/Features/Migration/Troubleshooting#:~:text=on%20graphics%20emulation.-,load%20of%20migration%20failed%3A%20Input%2Foutput%20error,are%20a%20few%20failure%20cases.&text=Something%20kills%2Fcancels%20the%20migration,killed%20before%20migration%20is%20complete.&text=A%20migration%20failure%20on%20the%20source.). In the fourth step, it suggests using migrate 'exec:cat > /dev/null' to try dumping vm state on the source node. Since the virtual machine is controlled by libvirt, I suppose I could using the following command,

virsh qemu-monitor-command --hmp <instance-id> 'migrate "exec:cat > /dev/nulll"
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