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https://bugzilla.redhat.com/622515 - When hot-unplugging CPUs, libvirt failed to start a guest that had been pinned to CPUs that were still online. Tested on a dual-core laptop, where I also discovered that, per http://www.cyberciti.biz/files/linux-kernel/Documentation/cpu-hotplug.txt, /sys/devices/system/cpu/cpu0/online does not exist on systems where it cannot be hot-unplugged. * src/nodeinfo.c (linuxNodeInfoCPUPopulate): Ignore CPUs that are currently offline. Detect readdir failure. (parse_socket): Move guts... (get_cpu_value): ...to new function, shared with... (cpu_online): New function.
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>