Re: chroot issues and http://tri-ceps.blogspot.com/2007/07/theory-of-filesystem-relativity .html

[Alfred M. Szmidt]

   Is there an application that really uses a sub-hurd?

It is used mostly for debugging a newly created system, seeing that
all translators start, and debugging early start up code using gdb.

But since you cannot escape a sub-hurd currently, it has limit use;
one cannot run for example a web server inside a sub-hurd for security
reasons, since you cannot send things outside of the sub-hurd (no
access to the network).