Comment 6 for bug 1570631

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Saverio Proto (zioproto) wrote :

The patch does not solve the problem for me.

nova has to check the qemu version in addition to the kernel version and set its limit accordingly

In the version I am using of qemu (Ubuntu Liberty UCA) I have:

VIRTIO_PCI_QUEUE_MAX == 64

This leads to 31 max queues: (VIRTIO_PCI_QUEUE_MAX - 1) / 2

It is not just the Kernel version

Please read also bug #1644839