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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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0f2721d044
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Marc Hartmayer 0f2721d044 conf: add global check for duplicate drive addresses 
Add a global check for duplicate drive addresses. This will fix the
problem of duplicate disk and hostdev drive addresses.

Example for duplicate drive addresses:
<disk>
  ...
  <target name='sda'/>
</disk>
<disk>
  ...
  <target name='sdb'/>
  <address type='drive' controller=0 bus=0 target=0 unit=0/>
</disk>

Another example:
<hostdev mode='subsystem' type='scsi' managed='no'>
  <source>
  ...
  </source>
  <address type='drive' controller='0' bus='0' target='0' unit='0'/>
</hostdev>
<hostdev mode='subsystem' type='scsi' managed='no'>
  <source>
  ...
  </source>
  <address type='drive' controller='0' bus='0' target='0' unit='0'/>
</hostdev>

Unfortunately the fixes (1b08cc170a,
8d46386bfe) weren't enough to catch these
cases and it isn't possible to add additional checks in
virDomainDeviceDefPostParseInternal() for SCSI hostdevs or
virDomainDiskDefAssignAddress() for SCSI/IDE/FDC/SATA disks without
adding another parse flag (virDomainDefParseFlags) to disable this
validation while updating or detaching a disk or hostdev.

Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-12-05 10:45:46 +01:00
.gnulib@c3b131294a build: update to latest gnulib 2016-11-15 10:26:58 -06:00
build-aux prohibit-duplicate-header: print file name and line 2016-06-23 12:48:40 +02:00
daemon Fix minor typos 2016-12-02 09:25:13 +01:00
docs Fix version number 2016-12-05 08:47:50 +01:00
examples examples: Distribute all systemtap scripts. 2016-10-10 15:02:38 +08:00
gnulib build: drop hack for old mingw ssize_t 2016-07-12 08:57:13 -06:00
include/libvirt Enhance documentation of virDomainMigrateFlags 2016-11-29 16:48:03 +01:00
m4 virt-gnutls.m4: fixed check for gnutls_rnd and gnutls_cipher_encrypt 2016-11-30 14:29:46 +00:00
po Release of libvirt-2.5.0 2016-12-04 22:07:38 +01:00
src conf: add global check for duplicate drive addresses 2016-12-05 10:45:46 +01:00
tests tests: don't use duplicate disk addresses 2016-12-05 10:45:46 +01:00
tools Fix minor typos 2016-12-02 09:25:13 +01:00
.ctags maint: Make ctags work out of the box 2013-07-18 08:47:21 +02:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore tests: Self test virt-admin 2016-09-14 13:18:07 +02:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: update .mailmap for recent contributions 2015-03-20 06:17:55 -06:00
AUTHORS.in Change maintainers list 2016-02-12 13:10:05 +03:00
autobuild.sh maint: Switch to xz compressed PAX release archives 2016-06-15 18:53:34 +02:00
autogen.sh maint: improve usage of autogen's --no-git 2015-02-06 11:35:29 -07:00
bootstrap build: update to latest gnulib 2016-11-12 14:51:52 -06:00
bootstrap.conf hvsupport: use a regex instead of XML::XPath 2016-07-19 18:42:44 +02:00
cfg.mk docs: rewrite content on front page to be more useful 2016-11-11 12:15:05 +00:00
ChangeLog-old Fix typos in src/* 2014-04-21 16:49:08 -06:00
config-post.h libssh_transport: add new libssh-based transport 2016-11-15 15:50:51 +01:00
configure.ac Fix version number 2016-12-05 08:47:50 +01:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: Remove control characters from LGPL license file 2015-09-25 09:16:24 +02:00
HACKING docs: remove outdated suggestion to make patches with "diff -urp"/"git diff" 2016-07-01 12:41:10 -04:00
libvirt-admin.pc.in Add libvirt-admin library 2015-06-16 13:46:20 +02:00
libvirt-lxc.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt-qemu.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.spec.in libvirtd: systemd: add special target for system shutdown 2016-11-23 11:13:53 +03:00
Makefile.am dist: Speed up distribution compression 2016-06-30 16:05:24 +02:00
Makefile.nonreentrant cfg.mk: use a single regex for all non-reentrant functions 2016-06-15 15:00:56 +02:00
mingw-libvirt.spec.in docs: redo style of front page 2016-11-11 12:15:03 +00:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
README-hacking docs: update README-hacking 2014-05-06 16:20:24 -06:00
run.in Add PKG_CONFIG_PATH to run.in script. 2014-06-26 14:32:35 +01:00
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>