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If destination libvirt doesn't support memory hotplug since all the support was introduced by adding new elements the destination would attempt to start qemu with an invalid configuration. The worse part is that qemu might hang in such situation. Fix this by sending a required migration feature called 'memory-hotplug' to the destination. If the destination doesn't recognize it it will fail the migration. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1248350
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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