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We used to set migration capabilities only when a user asked for them in flags. This is fine when migration succeeds since the QEMU process is killed in the end but in case migration fails or if it's cancelled, some capabilities may remain turned on with no way to turn them off. To fix that, migration capabilities have to be turned on if requested but explicitly turned off in case they were not requested but QEMU supports them. https://bugzilla.redhat.com/show_bug.cgi?id=1163953 Signed-off-by: Jiri Denemark <jdenemar@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>
Description
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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