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
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