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24e0cecb7c
A further fix for: https://bugzilla.redhat.com/show_bug.cgi?id=1113474 Since there is no possibility that any type of macvtap will work if the parent physdev it's attached to is offline, we should bring the physdev online at the same time as the macvtap. When taking the macvtap offline, it's also necessary to take the physdev offline for macvtap passthrough mode (because the physdev has the same MAC address as the macvtap device, so could potentially cause problems with misdirected packets during migration, as outlined in commits 829770 and 879c13). We can't set the physdev offline for other macvtap modes 1) because there may be other macvtap devices attached to the same physdev (and/or the host itself may be using the device) in the other modes whereas passthrough mode is exclusive to one macvtap at a time, and 2) there's no practical reason to do so anyway. (cherry picked from commit 38172ed894ab20e0ee0072da6f695e4c97aecc4a)
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>