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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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Xu He Jie 5fb0de2e4d pci address conflict when virtio disk with drive type 
When using the xml as below:
------------------------------------------------------
<devices>
  <emulator>/home/soulxu/data/work-code/qemu-kvm/x86_64-softmmu/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
    <driver name='qemu' type='qcow2'/>
    <source file='/home/soulxu/data/VM/images/linux.img'/>
    <target dev='vda' bus='virtio'/>
    <address type='drive' controller='0' bus='0' unit='0'/>
  </disk>
  <input type='mouse' bus='ps2'/>
  <graphics type='vnc' port='-1' autoport='yes'/>
  <video>
    <model type='cirrus' vram='9216' heads='1'/>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
  </video>
  <memballoon model='virtio'>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
  </memballoon>
</devices>
------------------------------------------------------

Then can't startup qemu, the error message as below:
virsh # start test-vm
error: Failed to start domain test-vm
error: internal error process exited while connecting to monitor: qemu-system-x86_64: -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3: PCI: slot 3 function 0 not available for virtio-balloon-pci, in use by virtio-blk-pci
qemu-system-x86_64: -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3: Device 'virtio-balloon-pci' could not be initialized

So adding check for bus type and address type. Only the address of pci type support by virtio bus.

Signed-off-by: Xu He Jie <xuhj@linux.vnet.ibm.com>
2011-10-28 13:45:00 -06:00
.gnulib@2394a603e7 build: update to latest gnulib 2011-10-13 08:50:24 -06:00
daemon Implement RPC driver support for virDomainOpenGraphics 2011-10-28 10:43:00 +01:00
docs storage: add auth to virDomainDiskDef 2011-10-28 12:51:22 -06:00
examples Add APIs for virNetSocket for sending/receiving file descriptors 2011-10-28 10:23:53 +01:00
gnulib freebsd: Fix build problem due to picking up the wrong libvirt.h 2011-07-29 07:35:54 -06:00
include secret: add Ceph secret type 2011-10-28 11:34:17 -06:00
m4 tests: Lower stack usage below 4096 bytes 2011-04-30 19:59:52 +02:00
po Release of libvirt-0.9.6 2011-09-22 14:53:23 +08:00
python startupPolicy: Emit event on disk source dropping 2011-10-25 09:27:10 +02:00
src pci address conflict when virtio disk with drive type 2011-10-28 13:45:00 -06:00
tests qemu: simplify use of HAVE_YAJL 2011-10-26 11:55:39 -06:00
tools virsh: Fix error message on vol-create-from failure 2011-10-27 21:28:22 -06:00
.dir-locals.el maint: let emacs avoid tabs in rng files 2011-08-13 08:56:26 -06:00
.gitignore snapshot: test domainsnapshot indentation 2011-10-20 16:02:16 -06:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap bridge_driver.c: Fix autoconf setting 2011-10-03 23:35:29 -04:00
AUTHORS storage: add auth to virDomainDiskDef 2011-10-28 12:51:22 -06:00
autobuild.sh spec: mingw cleanups 2011-10-13 09:21:02 -06:00
autogen.sh build: avoid problems with autogen.sh runs from tarball 2011-02-12 06:28:28 -07:00
bootstrap build: fix compilation on mingw64 2011-08-19 07:20:10 -06:00
bootstrap.conf build: use gnulib fdatasync 2011-10-25 09:48:34 -06:00
cfg.mk Update examples for probing with systemtap 2011-10-11 11:26:15 +01:00
ChangeLog-old generate ChangeLog from git logs into distribution tarball 2009-07-08 16:17:51 +02:00
configure.ac build: avoid RHEL 5 build failure on LXC 2011-10-26 10:11:50 -06:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING Document STREQ_NULLABLE and STRNEQ_NULLABLE 2011-10-06 16:50:38 +02:00
libvirt.pc.in * libvirt.pc.in: applied patch from Daniel Berrange to fix --cflags 2006-03-24 13:18:12 +00:00
libvirt.spec.in Allow for URI aliases when connecting to libvirt 2011-10-19 09:14:34 +01:00
Makefile.am maint: add missing copyright notices 2011-07-28 15:01:17 -06:00
Makefile.nonreentrant Ban use of all inet_* functions 2010-10-22 11:59:23 +01:00
mingw32-libvirt.spec.in Allow for URI aliases when connecting to libvirt 2011-10-19 09:14:34 +01:00
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>