diff --git a/lib/qemu.sh b/lib/qemu.sh
index cec61db..8f0d1f6 100644
--- a/lib/qemu.sh
+++ b/lib/qemu.sh
@@ -35,24 +35,31 @@ function qemu_start_vm {
     local subnet_id="$(echo "${subnet_name}" | cut -d\- -f2)"
     local mac="$(find_mac "${vpc_name}_br-${subnet_id}" "${ip}")"
 
-    print_in_color "${COLOR_GREEN}"  "Create tap tap${tap_id}"
-    add_in_db "vm" "${vm_name}" "${subnet_name}" "${tap_id}"
-    create_tap "${tap_id}" "br-${subnet_id}" "${vpc_name}"
+    check_qemu_exist "${vm_name}"
+    [ "$?" -eq "0" ] && \
+    {
+        print_in_color "${COLOR_ORANGE}" "Would have create ${vm_name}"
+    } || \
+    {
+        print_in_color "${COLOR_GREEN}"  "Create tap tap${tap_id}"
+        add_in_db "vm" "${vm_name}" "${subnet_name}" "${tap_id}"
+        create_tap "${tap_id}" "br-${subnet_id}" "${vpc_name}"
 
-    print_in_color "${COLOR_GREEN}"  "Start vm ${vm_name}"
-    ip netns exec "${vpc_name}" qemu-system-x86_64 \
-      -enable-kvm \
-      -cpu host \
-      -m 512 \
-      -smp 1 \
-      -serial "unix:/tmp/${vm_name}.sock,server,nowait" \
-      -monitor "unix:/tmp/${vm_name}.mon-sock,server,nowait" \
-      -qmp "unix:/tmp/${vm_name}.qmp-sock,server,nowait" \
-      -display "none" \
-      -drive "file=${volume_path},if=virtio" \
-      -netdev "tap,id=net0,ifname=tap${tap_id},script=no,downscript=no" \
-      -device "virtio-net-pci,netdev=net0,mac=${mac}" \
-      -daemonize
+        print_in_color "${COLOR_GREEN}"  "Start vm ${vm_name}"
+        ip netns exec "${vpc_name}" qemu-system-x86_64 \
+        -enable-kvm \
+        -cpu host \
+        -m 512 \
+        -smp 1 \
+        -serial "unix:/tmp/${vm_name}.sock,server,nowait" \
+        -monitor "unix:/tmp/${vm_name}.mon-sock,server,nowait" \
+        -qmp "unix:/tmp/${vm_name}.qmp-sock,server,nowait" \
+        -display "none" \
+        -drive "file=${volume_path},if=virtio" \
+        -netdev "tap,id=net0,ifname=tap${tap_id},script=no,downscript=no" \
+        -device "virtio-net-pci,netdev=net0,mac=${mac}" \
+        -daemonize
+    }
 }
 
 function qemu_stop_vm {