Union mounts (a.k.a., writable overlays) Union mounts allows you to mount exactly one read-write file system over exactly one read-only file system. The top layer file system must support whiteouts and fallthrus, which are special kinds of directory entries. Currently, ext2, jffs2, and tmpfs have fallthru and whiteout support (in the union mount git repository below). Get the code Union mounts req

What is Plan 9? A distributed operating system, developed as the research successor to Unix. Plan 9 is most notable for representing all system interfaces, including those required for networking and the user-interface, through the filesystem rather than specialized interfaces. What is Linux? An operating system kernel used by a family of Unix-like operating systems. In the early days, Linux rapid

Preface Looks like it is microkernel debate time again. Before getting into technical arguments, there are a couple of things I want to say. Many people have said or suggested that Linus and I are enemies or something like that. That is totally false. I met him once. He is a pleasant fellow and very smart. We may disagree on some technical issues, but that doesn't make us enemies. Please don't con