利用VMware Infrastructure SDK编程控制虚拟机集群(3)

接上回，继续整理针对虚拟机的各种操作。

7、跨主机克隆虚拟机

网上资料比较少，当时费了很大劲才成功的，与同一台主机上的虚拟机克隆有区别。

/// <summary>
/// 从模板部署虚拟机
/// </summary>
public void Deploy()
{
    //模板路径，我们假设template100这个模板在另一台主机上
    //后续的几步都与同一台主机上克隆没有区别
    string templatePath = "DataCenter/vm/template100";
    ManagedObjectReference templateRef = m_Service.FindByInventoryPath(m_Content.searchIndex, templatePath);
    ManagedObjectReference folderRef = m_Service.FindByInventoryPath(m_Content.searchIndex, "DataCenter/vm");
    ManagedObjectReference poolRef = m_Service.FindByInventoryPath(m_Content.searchIndex, "DataCenter/host/host10/Resources");

    //此处开始是关键
    //获取目标host的引用，路径是“数据中心/host/主机名/资源名”，默认资源名与主机名相同
    ManagedObjectReference hostRef = m_Service.FindByInventoryPath(m_Content.searchIndex, "DataCenter/host/host10/host10");

    //还需要获取目标主机存储的引用，用到的RetrievePropertiesForSingleObject方法是自定义的，主要是封装一下服务上的RetrieveProperties方法
    //获取hostRef上的datastore属性，最终的dataRef就是存储对象的引用
    ObjectContent[] contents = RetrievePropertiesForSingleObject(hostRef, new string[] { "datastore" });
    ManagedObjectReference[] datastores = (ManagedObjectReference[])contents[0].propSet[0].val;
    ManagedObjectReference dataRef = datastores[0];

    //指定位置参数
    VirtualMachineRelocateSpec vmRelocSpec = new VirtualMachineRelocateSpec();
    vmRelocSpec.pool = poolRef;
    vmRelocSpec.datastore = dataRef;   //这个很重要
    vmRelocSpec.transform = VirtualMachineRelocateTransformation.sparse;

    //指定复制相关参数，与同主机复制相同
    VirtualMachineCloneSpec vmCloneSpec = new VirtualMachineCloneSpec();
    vmCloneSpec.template = true;
    vmCloneSpec.location = vmRelocSpec;
    vmCloneSpec.powerOn = true;

    //还是调用CloneVM_Task来克隆虚拟机（异步），此处没有等待任务完成
    ManagedObjectReference taskRef = m_Service.CloneVM_Task(templateRef, folderRef, destName, vmCloneSpec);
}

/// <summary>
/// 获取单一对象的属性
/// </summary>
/// <param name="obj">对象</param>
/// <param name="properties">属性集合</param>
/// <returns>内容集合</returns>
private ObjectContent[] RetrievePropertiesForSingleObject(ManagedObjectReference obj, string[] properties)
{
    PropertySpec[] pSpec = new PropertySpec[] { new PropertySpec() };
    pSpec[0].type = obj.type;
    pSpec[0].all = false;
    pSpec[0].pathSet = properties;

    ObjectSpec[] obSpec = new ObjectSpec[] { new ObjectSpec() };
    obSpec[0].obj = obj;
    obSpec[0].skip = true;

    PropertyFilterSpec spec = new PropertyFilterSpec();
    spec.propSet = pSpec;
    spec.objectSet = obSpec;

    ObjectContent[] contents = m_Service.RetrieveProperties(m_Collector, new PropertyFilterSpec[] { spec });

    return contents;
}

未完待续……