Kangkan, This URL will help you: http://cloudstack-release-notes.readthedocs.org/en/latest/upgrade/upgrade-4.2.html
Best Regards, Star Guo -----邮件原件----- 发件人: kangkan mahanta [mailto:kangkan.maha...@gmail.com] 发送时间: 2015年2月20日 18:07 收件人: users@cloudstack.apache.org 主题: Cloud stack Upgradation Hi, We are using cloudstack private cloud infra. We want to upgrade from verion 4.2.1 to 4.4. Please let me know the impact on running virtual machines during up-gradation. Regards, Kangkan Mahanta Kashyap