Hi buddy, I wanna to monitor a domain's life cycle event, so i register a event an a virConnectDomainEventCallback, the code segment is as below: ------------------------ int DomainEventCallback(virConnectPtr conn, virDomainPtr dom, int event, int detail, void * opaque){ /*My code */ ....... } int main(){ /* .....*/ virDomainPtr dom = domain.getDomains("xp"); virFreeCallback freecb = NULL; void *opaque =NULL; virConnectDomainEventCallback cb =DomainEventCallback; virConnectDomainEventRegisterAny(conn, dom, VIR_DOMAIN_EVENT_ID_LIFECYCLE, VIR_DOMAIN_EVENT_CALLBACK(cb),opaque,freecb); /* .....*/ } but such a error happened: libvir: Remote error : this function is not supported by the connection driver: no event support and the libvirt version is 0.9; the driver is QEMU-KVM ,version is 0.14.0. I want to know why this Error will happen? Is the QEMU not support the LIFECYCLE Event ? If it is , how can i monitor the domain's life cycle event( such as started,defined and stopped..)