Как вернуть моментальный снимок VM с Pyvmomi?

Question

Я играл с официальной привязкой Python для vSphere Pyvmomi (https://github.com/vmware/pyvmomi)) Мне удалось получить образец кода, работающий для работы с vm, но я бы хотел сначала вернуть vm на указанный моментальный снимок до питание. есть идеи как это сделать? Вот что работает до сих пор.

def main(): 

    args = GetArgs() 
    if args.password: 
     password = args.password 
    else: 
     password = getpass.getpass(prompt='Enter password for host %s and user %s: ' % (args.host,args.user)) 

    try: 
     vmnames = args.vmname 
     if not len(vmnames): 
     print("No virtual machine specified for poweron") 
     sys.exit() 

     si = None 
     context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) 
     context.verify_mode = ssl.CERT_NONE 
     try: 
     si = SmartConnect(host=args.host, 
          user=args.user, 
          pwd=password, 
          port=int(args.port), 
          sslContext=context) 
     except IOError: 
     pass 
     if not si: 
     print("Cannot connect to specified host using specified username and password") 
     sys.exit() 

     atexit.register(Disconnect, si) 

     # Retreive the list of Virtual Machines from the inventory objects 
     # under the rootFolder 
     content = si.content 
     objView = content.viewManager.CreateContainerView(content.rootFolder, 
                 [vim.VirtualMachine], 
                 True) 
     vmList = objView.view 
     objView.Destroy() 

     #Code to list all available snapshots but not working 
     #snap_info = [vm.snapshot for vm in vmList if vm.name in vmnames] 

     #tree = snap_info.rootSnapshotList 
     #while tree[0].childSnapshotList is not None: 
     # print("Snap: {0} => {1}".format(tree[0].name, tree[0].description)) 
     # if len(tree[0].childSnapshotList) < 1: 
     #  break 
     # tree = tree[0].childSnapshotList 

     # Find the vm and power it on 
     tasks = [vm.PowerOn() for vm in vmList if vm.name in vmnames] 

     print("Virtual Machine(s) have been powered on successfully") 
    except vmodl.MethodFault as e: 
     print("Caught vmodl fault : " + e.msg) 
    except Exception as e: 
     print("Caught Exception : " + str(e)) 

# Start program 
if __name__ == "__main__": 
    main() 

Answer 1

Вы можете попробовать создать задачу так:

snapshot_name = 'snapshot_name2' # snapshot name 
    for vm in vmList: 
     if vm.name in vmnames: 
      snapshots = vm.snapshot.rootSnapshotList 
      for snapshot in snapshots: 
        if snapshot_name == snapshot.name: 
         snap_obj = snapshot.snapshot 
         print ("Reverting snapshot ", snapshot.name) 
         task = [snap_obj.RevertToSnapshot_Task()] 
         WaitForTasks(task, si) 

Answer 2

Если вы хотите вернуться к снимку до 3 уровня вниз (а не только корень один), вы можете сделать это, как этот

snapshot_name = 'MySnapshot' # snapshot name 
for vm in vmList: 
    if vm.name in vmnames: 
     snapshots = vm.snapshot.rootSnapshotList 
     for snapshot in snapshots: 
     if snapshot_name == snapshot.name: 
      print("Snapshot NAME L1: " + str(snapshot.name)) 
      snap_obj = snapshot.snapshot 
      print("LEVEL1 Reverting snapshot ", snapshot.name) 
      task = [snap_obj.RevertToSnapshot_Task()] 
      WaitForTasks(task, si) 
      break 
     for subsnapshot in snapshot.childSnapshotList: 
      print(subsnapshot.name) 
      if snapshot_name == subsnapshot.name: 
       print("Snapshot NAME L2: " + str(subsnapshot.name)) 
       snap_obj = subsnapshot.snapshot 
       print("LEVEL2 Reverting snapshot ", subsnapshot.name) 
       task = [snap_obj.RevertToSnapshot_Task()] 
       WaitForTasks(task, si) 
       break 
      for subsnapshot2 in subsnapshot.childSnapshotList: 
       print(subsnapshot2.name) 
       if snapshot_name == subsnapshot2.name: 
        print("Snapshot NAME L3: " + str(subsnapshot2.name)) 
        snap_obj = subsnapshot2.snapshot 
        print("LEVEL3 Reverting snapshot ", subsnapshot2.name) 
        task = [snap_obj.RevertToSnapshot_Task()] 
        WaitForTasks(task, si) 
        break 

Answer 3

Рекурсивная функция для получения всех снимков, включая детей на vm.

def get_all_vm_snapshots(self, snapshots=None): 
    found_snapshots = [] 

    if not snapshots: 
     snapshots = vm.snapshot.rootSnapshotList 

    for snapshot in snapshots: 
     if snapshot.childSnapshotList: 
      found_snapshots += get_all_vm_snapshots(snapshot.childSnapshotList) 
     found_snapshots += [snapshot] 
    return found_snapshots