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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Daniel P. Berrange 25bf888a66 Report original error when QMP probing fails with new QEMU
If probing capabilities via QMP fails, we now have a check
that prevents us falling back to -help parsing. Unfortunately
the error message

  "Failed to probe capabilities for /usr/bin/qemu-kvm:
   unsupported configuration: QEMU 2.1.2 is too new for help parsing"

is proving rather unhelpful to the user. We need to be telling
them why QMP failed (the root cause), rather than they can't
use -help (the side effect).

To do this we should capture stderr during QMP probing, and
if -help parsing then sees a new QEMU version, we know that
QMP should have worked, and so we can show the messages from
stderr. The message thus becomes

  "Failed to probe capabilities for /usr/bin/qemu-kvm:
   internal error: QEMU / QMP failed: Could not access
   KVM kernel module: No such file or directory
   failed to initialize KVM: No such file or directory"
2014-12-05 10:57:46 +00:00
.gnulib@9565c3be73 maint: update to latest gnulib 2014-09-06 19:14:43 -06:00
build-aux bracket-spacing: Add syntax-check for unnecessary curly brackets 2014-11-14 17:13:36 +01:00
daemon Replace virDomainSnapshotFree with virObjectUnref 2014-12-02 11:03:41 -05:00
docs docs: storage: fix rbd pool indentation 2014-12-04 10:34:05 -05:00
examples examples: Add support for the guest agent lifecycle event 2014-11-24 15:47:01 +01:00
gnulib maint: update to latest gnulib 2014-01-01 06:02:47 -07:00
include Fix handling of whitespae in preprocessor macros for API generator 2014-12-04 15:00:30 +00:00
m4 build: fix build with older dbus headers 2014-11-20 06:41:53 -07:00
po drvbhyve: Automatically tear down guest domains on shutdown 2014-12-04 11:03:13 +01:00
src Report original error when QMP probing fails with new QEMU 2014-12-05 10:57:46 +00:00
tests Report original error when QMP probing fails with new QEMU 2014-12-05 10:57:46 +00:00
tools virsh: vol-upload disallow negative offset 2014-12-03 08:43:59 -05:00
.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 gitignore: use wildcard for configure's temporary files 2014-11-06 16:56:21 +01:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: update .mailmap 2014-10-06 08:23:47 -06:00
AUTHORS.in Cleanup maintainers list 2014-10-15 10:16:47 +02:00
autobuild.sh Disable libvirtd by default when building on Win32 2014-04-29 11:30:32 +01:00
autogen.sh maint: detect VPATH builds when checking for gnulib update 2014-06-04 16:06:55 -06:00
bootstrap maint: update to latest gnulib 2014-01-01 06:02:47 -07:00
bootstrap.conf internal: add macro to round value to the next closest power of 2 2014-11-24 22:05:55 +01:00
cfg.mk Replace virDomainSnapshotFree with virObjectUnref 2014-12-02 11:03:41 -05:00
ChangeLog-old Fix typos in src/* 2014-04-21 16:49:08 -06:00
config-post.h build: fix build of virt-login-shell on systems with older gnutls 2013-10-22 09:41:50 -06:00
configure.ac maint: use portable shell 2014-11-19 12:13:14 -07:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
HACKING docs: Adjust contributor guidelines about curly brackets 2014-11-14 17:13:36 +01:00
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 Generate a MAC when loading a config instead of package update 2014-12-02 15:56:33 +01:00
Makefile.am examples: Introduce domtop 2014-07-18 16:39:54 +02:00
Makefile.nonreentrant maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
mingw-libvirt.spec.in Move virConnect related APIs out of libvirt.h.in 2014-10-24 17:23:51 +01:00
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

         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>