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RDMA Live migration requires registering memory with the hardware, and thus QEMU offers a new 'capability' to pre-register / mlock() the guest memory in advance for higher RDMA performance before the migration begins. This capability is disabled by default, which means QEMU will register the memory with the hardware in an on-demand basis. This patch exposes this capability with the following example usage: virsh migrate --live --rdma-pin-all --migrateuri rdma://hostname domain qemu+ssh://hostname/system Signed-off-by: Michael R. Hines <mrhines@us.ibm.com> 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>