Hi all, I'm not sure whether it's appropriate to post the problem here. I played with "virsh" under Fedora 12, and started a KVM fedora12 guest by "virsh start" command. The fedora12 guest is successfully started. Than I run the following command to dump the guest core: #virsh dump 1 mycoredump (domain id is 1) This command seemed blocking and not return. According to he strace output, virsh dump seems that it's blocking at poll() call. I think the following should be the call trace of virsh. cmdDump() -> virDomainCoreDump() -> remoteDomainCoreDump() -> call() -> remoteIO() -> remoteIOEventLoop() -> poll(fds, ARRAY_CARDINALITY(fds), -1) Any one encounters this problem also, any thoughts? Thanks Gui -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html