The zones upgrade failed and the system needs to be restored from backup.More details can be found in the file /var/sadm/install_data/upgrade_log on the upgrade root file system.

• 错误信息是不正确的:虽然这个错误信息声明系统必须从备份恢复，系统实际上相当好，它可以被成功的升级，使用替代方案。