> > Wouldn't you get the same information from the command line? > > I think the information you said is different from what I meant. The > information I wanted to know is whether QEMU creates/deletes a device > successfully or not.
Failing to create a device will always exit QEMU. If you cannot assume that, you're really in debugging territory and your tools should be the "info" monitor commands (info qtree, info pci) or gdb... > We cannot get it from the command line. > I was sure I specified a NIC device for the guest, but the Windows > guest didn't have it when it booted. There were two possibilities. One > was QEMU failed to create the NIC device, and the other was QEMU created > it successfully and the Windows guest failed to detect it. Since QEMU > output limited message at the moment, it was difficult to prove that > it was not QEMU's issue. I took a coredump of the QEMU and proved > the QEMU must have a valid structures for the NIC device. I believe the > tracepoints could have allowed me to figure out where the issue > existed a lot faster and easier. Had you tried "info qtree" or "info pci"? Paolo