[root@ip-10-196-47-63 ~]# time ./test.sh
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
kvm_create_vm: Device or resource busy
Could not initialize KVM, will disable KVM support
OK
real 4m55.502s
user 4m33.564s
sys 0m12.962s
[root@ip-10-196-47-63 ~]# rpm -q libguestfs
libguestfs-1.4.3-3.fc13.x86_64