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Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
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Matthias Bolte b8fa5fd071 esx: Implement network driver 
An ESX server has one or more PhysicalNics that represent the actual
hardware NICs. Those can be listed via the interface driver.

A libvirt virtual network is mapped to a HostVirtualSwitch. On the
physical side a HostVirtualSwitch can be connected to PhysicalNics.
On the virtual side a HostVirtualSwitch has HostPortGroups that are
mapped to libvirt virtual network's portgroups. Typically there is
HostPortGroups named 'VM Network' that is used to connect virtual
machines to a HostVirtualSwitch. A second HostPortGroup typically
named 'Management Network' is used to connect the hypervisor itself
to the HostVirtualSwitch. This one is not mapped to a libvirt virtual
network's portgroup. There can be more HostPortGroups than those
typical two on a HostVirtualSwitch.

         +---------------+-------------------+
   ...---|               |                   |   +-------------+
         | HostPortGroup |                   |---| PhysicalNic |
         |   VM Network  |                   |   |    vmnic0   |
   ...---|               |                   |   +-------------+
         +---------------+ HostVirtualSwitch |
                         |     vSwitch0      |
         +---------------+                   |
         | HostPortGroup |                   |
   ...---|   Management  |                   |
         |    Network    |                   |
         +---------------+-------------------+

The virtual counterparts of the PhysicalNic is the HostVirtualNic for
the hypervisor and the VirtualEthernetCard for the virtual machines
that are grouped into HostPortGroups.

   +---------------------+   +---------------+---...
   | VirtualEthernetCard |---|               |
   +---------------------+   | HostPortGroup |
   +---------------------+   |   VM Network  |
   | VirtualEthernetCard |---|               |
   +---------------------+   +---------------+
                                             |
                             +---------------+
   +---------------------+   | HostPortGroup |
   |    HostVirtualNic   |---|   Management  |
   +---------------------+   |    Network    |
                             +---------------+---...

The currently implemented network driver can list, define and undefine
HostVirtualSwitches including HostPortGroups for virtual machines.
Existing HostVirtualSwitches cannot be edited yet. This will be added
in a followup patch.
2012-08-09 22:31:47 +02:00
.gnulib@dbd914496c build: update to latest gnulib, for secure tarball 2012-07-26 07:50:59 -06:00
build-aux Remove tabs from all perl files & enforce this 2012-07-30 13:09:57 +01:00
daemon Turn virNetServer* into virObject instances 2012-08-07 11:47:55 +01:00
docs Added timestamps to storage volumes 2012-08-02 17:14:17 -06:00
examples examples: Update strings for event details 2012-08-09 15:34:47 +02:00
gnulib build: fix fresh checkout on RHEL5 2012-04-19 17:11:43 -06:00
include parallels: add driver skeleton 2012-08-01 11:44:26 +08:00
m4 Added timestamps to storage volumes 2012-08-02 17:14:17 -06:00
po esx: Implement network driver 2012-08-09 22:31:47 +02:00
python python: Don't generate bodies for close callback functions 2012-07-30 15:38:07 +02:00
src esx: Implement network driver 2012-08-09 22:31:47 +02:00
tests qemu: add two qemu caps for lsi and virtio-scsi SCSI controllers 2012-08-08 15:06:33 +08:00
tools virsh: Use vshPrint instead of printf 2012-08-06 12:35:42 +08:00
.dir-locals.el maint: let emacs avoid tabs in rng files 2011-08-13 08:56:26 -06:00
.gitignore Rewrite virAtomic APIs using GLib's atomic ops code 2012-08-02 11:50:59 +01:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: consolidate AUTHOR listings for Gerd von Egidy 2012-08-01 17:29:46 -06:00
AUTHORS Fix errno check, prevent spurious errors under heavy load 2012-08-08 15:50:58 -06:00
autobuild.sh Switch automated builds to use Mingw64 toolchain instead of Mingw32 2012-06-25 10:41:10 +01:00
autogen.sh Allow NOCONFIGURE=1 to make autogen.sh skip ./configure 2012-06-25 10:41:10 +01:00
bootstrap maint: regenerate bootstrap 2012-07-27 09:34:04 -06:00
bootstrap.conf Added timestamps to storage volumes 2012-08-02 17:14:17 -06:00
cfg.mk Turn virNetClient* into virObject instances 2012-08-07 11:47:55 +01:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
configure.ac build: add stubs so mdns code can be unconditionally compiled 2012-08-02 13:35:21 -06:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING docs: Improve patch submission guidelines 2012-07-16 11:05:12 +02:00
libvirt.pc.in build: silence warning from autoconf 2012-05-30 09:22:02 -06:00
libvirt.spec.in spec: Remove extra () with return statement 2012-08-01 13:09:57 +02:00
Makefile.am Switch automated builds to use Mingw64 toolchain instead of Mingw32 2012-06-25 10:41:10 +01:00
Makefile.nonreentrant Ban use of all inet_* functions 2010-10-22 11:59:23 +01:00
mingw-libvirt.spec.in parallels: add driver skeleton 2012-08-01 11:44:26 +08:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
README-hacking maint: relax git minimum version 2010-02-24 14:29:27 -05:00
TODO Update todo list file to point at bugzilla/website 2010-10-13 16:45:26 +01:00

README 

         LibVirt : simple API for virtualization

  Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.

Daniel Veillard <veillard@redhat.com>