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Name it virNumaGetHostMemoryNodeset and return only NUMA nodes which have memory installed. This is necessary as the kernel is not very happy to set the memory cgroup setting for nodes which do not have any memory. This would break vcpu hotplug with following message on such configruation: Invalid value '0,8' for 'cpuset.mems': Invalid argument Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1375268
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>