I got the following error when migrating a VM with watchdog device: {"timestamp": {"seconds": 1533884471, "microseconds": 668099}, "event": "WATCHDOG", "data": {"action": "reset"}} {"timestamp": {"seconds": 1533884471, "microseconds": 677658}, "event": "RESET", "data": {"guest": true}} {"timestamp": {"seconds": 1533884471, "microseconds": 677874}, "event": "STOP"} qemu-system-x86_64: invalid runstate transition: 'prelaunch' -> 'postmigrate' Aborted
The run state transition is RUN_STATE_FINISH_MIGRATE to RUN_STATE_PRELAUNCH, then the migration thread aborted when it tries to set RUN_STATE_POSTMIGRATE. There is a race between the main loop thread and the migration thread I think. Signed-off-by: Jay Zhou <jianjay.z...@huawei.com> --- vl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/vl.c b/vl.c index 16b913f..298ce91 100644 --- a/vl.c +++ b/vl.c @@ -637,6 +637,7 @@ static const RunStateTransition runstate_transitions_def[] = { { RUN_STATE_PRELAUNCH, RUN_STATE_RUNNING }, { RUN_STATE_PRELAUNCH, RUN_STATE_FINISH_MIGRATE }, { RUN_STATE_PRELAUNCH, RUN_STATE_INMIGRATE }, + { RUN_STATE_PRELAUNCH, RUN_STATE_POSTMIGRATE }, { RUN_STATE_FINISH_MIGRATE, RUN_STATE_RUNNING }, { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PAUSED }, -- 1.8.3.1