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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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Laine Stump 6a3691b743 network: merge relevant virtualports rather than choosing one 
One of the original ideas behind allowing a <virtualport> in an
interface definition as well as in the <network> definition *and*one
or more <portgroup>s within the network, was that guest-specific
parameteres (like instanceid and interfaceid) could be given in the
interface's virtualport, and more general things (portid, managerid,
etc) could be given in the network and/or portgroup, with all the bits
brought together at guest startup time and combined into a single
virtualport to be used by the guest. This was somehow overlooked in
the implementation, though - it simply picks the "most specific"
virtualport, and uses the entire thing, with no attempt to merge in
details from the others.

This patch uses virNetDevVPortProfileMerge3() to combine the three
possible virtualports into one, then uses
virNetDevVPortProfileCheck*() to verify that the resulting virtualport
type is appropriate for the type of network, and that all the required
attributes for that type are present.

An example of usage is this: assuming a <network> definitions on host
ABC of:

  <network>
    <name>testA</name>
    ...
    <virtualport type='openvswitch'/>
    ...
    <portgroup name='engineering'>
      <virtualport>
        <parameters profileid='eng'/>
      </virtualport>
    </portgroup>
    <portgroup name='sales'>
      <virtualport>
        <parameters profileid='sales'/>
      </virtualport>
    </portgroup>
  </network>

and the same <network> on host DEF of:

  <network>
    <name>testA</name>
    ...
    <virtualport type='802.1Qbg'>
      <parameters typeid="1193047" typeidversion="2"/>
    </virtualport>
    ...
    <portgroup name='engineering'>
      <virtualport>
        <parameters managerid="11"/>
      </virtualport>
    </portgroup>
    <portgroup name='sales'>
      <virtualport>
        <parameters managerid="55"/>
      </virtualport>
    </portgroup>
  </network>

and a guest <interface> definition of:

  <interface type='network'>
    <source network='testA' portgroup='sales'/>
    <virtualport>
      <parameters instanceid="09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f"
                  interfaceid="09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f"\>
    </virtualport>
    ...
  </interface>

If the guest was started on host ABC, the <virtualport> used would be:

  <virtualport type='openvswitch'>
    <parameters interfaceid='09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f'
                profileid='sales'/>
  </virtualport>

but if that guest was started on host DEF, the <virtualport> would be:

    <virtualport type='802.1Qbg'>
      <parameters instanceid="09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f"
                  typeid="1193047" typeidversion="2"
                  managerid="55"/>
    </virtualport>

Additionally, if none of the involved <virtualport>s had a specified type
(this includes cases where no virtualport is given at all),
2012-08-14 15:47:57 -04:00
.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 network: merge relevant virtualports rather than choosing one 2012-08-14 15:47:57 -04:00
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 virterror: Add error message for unsupported operations. 2012-08-11 10:03:00 +02:00
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 network: merge relevant virtualports rather than choosing one 2012-08-14 15:47:57 -04:00
tests conf: support partially-specified <virtualport> in parser and formatter 2012-08-14 15:47:50 -04:00
tools Destroy virdomainlist.[ch] 2012-08-14 17:27:49 +08:00
.dir-locals.el maint: let emacs avoid tabs in rng files 2011-08-13 08:56:26 -06:00
.gitignore docs: autogenerate search.php 2012-08-10 10:58:38 +02:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap build: fix author of previous commit 2012-08-09 15:39:34 -06:00
AUTHORS sanlock: don't unlink lockspace if registration fails 2012-08-13 17:11:30 -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 json: fix interface locale dependency 2012-08-14 07:30:14 +02:00
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 Fix timebomb in LIBVIRT_VERSION_INFO calculation 2012-08-14 10:59:02 +01:00
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>