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Recent work to improve support for loadable driver modules introduced a regression in the xen driver. The legacy xen driver is now a stateful, libvirtd driver but was not being registered when building without driver modules. A slight behavior change was also noted in the xen drivers when built as driver modules. Previously, explicitly specifying a connection URI was not necessary, but now Compiled against library: libvirt 0.10.0 Using library: libvirt 0.10.0 Using API: QEMU 0.10.0 error: failed to get the hypervisor version error: internal error Cannot find suitable emulator for x86_64 The xen drivers need to be registered before the qemu driver since the qemu driver will return success with a null connection URI. This ordering is safe since the xen drivers will decline when not running the xen kernel.
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>