Only the zlogin command with the -C option can be used to log in to a zone that is not in the running state.
Unless the -C option is used to connect to the zone console, logging in to a zone using zlogin starts a new task. A task cannot span two zones.
As described in How to Use Non-Interactive Mode to Access an lx Branded Zone, you can use the zlogin command in non-interactive mode by supplying a command to run inside a zone. However, the command or any files the command acts upon cannot reside on NFS. The command will fail if any of its open files or any portion of its address space resides on NFS. The address space includes the command executable itself and the command's linked libraries.
The zlogin command can only be used by the global administrator operating in the global zone. See the zlogin(1) man page for more information.