On 06/03/14 10:22, Jiri Denemark wrote: > [1] reported that we are removing network's backend too early. I didn't > really get the reproducer but libvirt behaves strangely when a guest > does not confirm the removal, e.g., it does not support PCI hotplug. In > such case, detaching a network device leaves its frontend in place but > removes the backend, which makes the device unusable for the guest. > Moreover attaching the same device again succeeds and both the guest and > libvirt will see two network interfaces attached but only one of them is > actually working. > > I checked with Paolo Bonzini and he confirmed we should only remove a > backend after seeing DEVICE_DELETED event for a corresponding frontend. > > [1] https://www.redhat.com/archives/libvir-list/2014-March/msg01740.html > > Signed-off-by: Jiri Denemark <jdenemar@xxxxxxxxxx> > --- > > Notes: > Version 2: > - return int and propagate errors > > src/qemu/qemu_hotplug.c | 68 +++++++++++++++++++++++++++---------------------- > 1 file changed, 37 insertions(+), 31 deletions(-) > ACK Peter
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