virt/uml/user_mode_linux_howto_v2.rst

28 is not a single real device in sight. It is 100% artificial or if
37 program. It can be run by an unprivileged user and it does not require
53 * If User Mode Linux kernel crashes, your host kernel is still fine. It
55   access any devices directly.  It is, in fact, a process like any other.
74 * It's fun.
99 This is extremely easy on Debian - you can do it using debootstrap. It is
129 anything related to networking. It is up to the user to do that.
147 are creating its image. It is a good idea to change that to avoid
151 which are scheduled for obsoletion. These are called ethX. It also
415 risk. It is not recommended to allow this unless the User Mode Linux
457   its "security" is laughable. It is, however, a useful feature to
482 _Warning_. L2TPv3 has a "bug". It is the "bug" known as "has more
561 It has support for a simple sequential packet socket mode which in the
592 kernel. It can be run just like any other executable.
593 It will take most normal linux kernel arguments as command line
603 * ``mem=int[K,M,G]`` - amount of memory. By default in bytes. It will
640 xterm. This makes it nice and easy to use UML on a host with a GUI. It is,
698 called ``Filesystem.img`` as root. It will connect to the host using tap0.
773 This command takes no arguments.  It prints the UML version::
779 There are a couple actual uses for this.  It's a simple no-op which
780 can be used to check that a UML is running.  It's also a way of
787 This command takes no arguments. It prints a short help screen with the
805 by most UML device drivers. It takes one argument, which is the
824 This command takes one argument, which is a single letter.  It calls the
873 from a shared disk.  It will result in filesystem corruption.
913 image files to the underlying OS. It is important to use either ls -ls
944 It also has a destructive merge option which will merge the COW file
1003 It's possible to boot from a directory hierarchy on the host using
1040 UML at present is strictly uniprocessor. It will, however spin up a
1069 filesystems, devices, virtualization, etc. It provides unrivalled
1148 can be very informative when observing IO. It shows the actual IO calls, their
1163 command line to request it to continue. It may be a good idea to make
1183 UML does not have a strictly defined kernel-to-host API. It does not
1200 with most things UML, "some user assembly may be required". It is