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12926a7c39
Up to now, users have to pass two arguments at least: domain virt type
('qemu' vs 'kvm') and one of emulatorbin or architecture. This is not
much user friendly. Nowadays users mostly use KVM and share the host
architecture with the guest. So now, the API (and subsequently virsh
command) can be called with all NULLs (without any arguments).
Before this patch:
# virsh domcapabilities
error: failed to get emulator capabilities
error: virttype_str in qemuConnectGetDomainCapabilities must not be NULL
# virsh domcapabilities kvm
error: failed to get emulator capabilities
error: invalid argument: at least one of emulatorbin or architecture fields must be present
After:
# virsh domcapabilities
<domainCapabilities>
<path>/usr/bin/qemu-system-x86_64</path>
<domain>kvm</domain>
<machine>pc-i440fx-2.1</machine>
<arch>x86_64</arch>
<vcpu max='255'/>
</domainCapabilities>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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>