Citrix XenServer Tools作用

   之前一直在纠结xen-tools的作用，今天偶然在官方资料上瞄到了：  

   xenserver tools must be installed for each virtual machine (windows and linux) in order for the vm to have a fully supported configuration, and to be able to use the xenserver management tools (the xe cli or xencenter).

   a windows vm will function without them, but performance will be significantly hampered unless the tools are installed./不安装也能运行，但是性能在很大程度上会被限制

without the tools being installed, you cannot:

• cleanly shut down a vm /干净利落的关闭一台虚拟机

• cleanly reboot a vm /干净利落的重启一台虚拟机

• suspend a vm /挂起一台虚拟机

• migrate a running vm (xenmotion) /利用xenmotion迁移一台正在运行的虚拟机

• use the checkpoint and roll back feature /使用快照和从快照恢复功能

• dynamically adjust the number of vcpus assigned to a running linux vm- windows vms require a reboot for this to take effect /动态调整vcpu数量，需要重启才能生效

for further information about xenserver tools see the section called “xenserver tools”

warning:

running a vm without installing the xenserver tools is not a supported configuration.

/运行一台不安装xen-tools的虚拟机是不建议的配置