commvault 備份虛擬機出現錯誤 Unable to quiesce guest file system during snapshot creation

 用commvault在備份一台新建esxi上的虛擬機，都會出現"Unable to quiesce guest file system during snapshot creation"，原因就是該台虛擬機沒裝vmtool的關係，把vmtool裝上去就不會再出現這個錯誤了。