Hi Daniel, Thanks for your help, i was able to run the libvirt daemon from master, and after add some debug messages, i understood that the call to virDomainIsActive was actually hanging from the client. It never reached the daemon. Looking back at the call again: https://gist.github.com/Wenzel/624cb8c0746c05bd824d2b3c04b6b9f9 The call is waiting for pthread_sigmask to return. Looking into the libvirt source code (3.0.0) at the location of the call: https://github.com/libvirt/libvirt/blob/v3.0.0/src/rpc/virnetclient.c?utf8=%E2%9C%93#L1659 Is this supposed to be an instant call, or does it wait for specific conditions/event to return ? Any idea what might go wrong ? Thank you. -- Mathieu Tarral -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list