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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.
34c592fa0d
Other drivers in libvirt (e.g. network, qemu) will automatically
return the "inactive" (persistent configuration) XML of an object when
that object is inactive. The netcf backend of the interface driver
would always try to return the live status XML of the interface, even
when it was down. Although netcf does return valid XML in that case,
for bond interfaces it is missing almost all of its content, including
the <bond> subelement itself, leading to this error message from
"virsh iface-dumpxml" of a bond interface that is inactive:
error: XML error: bond interface misses the bond element
(this is because libvirt's validation of the XML returned by netcf
always requires a <bond> element be present).
This patch modifies the interface driver netcf backend to check if the
interface is inactive, and in that case always return the inactive XML
(which will always have a <bond> element, thus eliminating the error
message, as well as making operation more in line with other drivers.
This fixes the following bug:
https://bugzilla.redhat.com/show_bug.cgi?id=878394
(cherry picked from commit
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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>