Christian Brauner
0d6d2c9ebd
QMP "quit" tells QEMU to exit, which races the reply with the socket EOF: sometimes the disconnect lands in qmp_client_fail_pending() with -ECONNRESET before the reply has been parsed. The shared completion callback then translates that into io.systemd.MachineInstance.NotConnected, turning the desired outcome into a varlink error. This is exactly what TEST-87-AUX-UTILS-VM exposes during its repeated start/pause/resume/terminate stress loop: a successful Pause/Describe followed milliseconds later by a Terminate that fails with NotConnected when the disconnect path wins the race. Give Terminate its own completion callback that treats disconnect-class errors as success, since QEMU shutting down is the whole point of "quit". The other simple commands (Pause, Resume, PowerOff, Reboot) keep the existing semantics: they expect QMP to remain alive, so NotConnected is the correct reply for them. Link: https://github.com/systemd/systemd/actions/runs/24986080288/job/73159585425?pr=41835 Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
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