Changes

For OpenVZ, Linux kernel namespaces are used as containers building blocks. A simple case of a namespace is chroot.

=== Chroot ===

Traditional UNIX <code>chroot()</code> system call is used to change the root of the file system of a calling process to a particular directory. That way it limits the scope of file system for the process, so it can only see and access a limited sub tree of files and directories.