PCI Passthrough error 'group x is not viable' 2

 1Failed to build and run instance: libvirt.libvirtError: internal error: qemu unexpectedly closed the monitor: 2022-08-05T12:05:46.630755Z qemu-system-x86_64: -device vfio-pci,host=0000:c3:00.0,id=hostdev0,bus=pci.0,addr=0x5: vfio 0000:c3:00.0: group 15 is not viable
 2Traceback (most recent call last):
 3  File "/usr/local/lib/python3.8/dist-packages/nova/compute/manager.py", line 2398, in _build_and_run_instance
 4    self.driver.spawn(context, instance, image_meta,
 5  File "/usr/local/lib/python3.8/dist-packages/nova/virt/libvirt/driver.py", line 4225, in spawn
 6    self._create_guest_with_network(
 7  File "/usr/local/lib/python3.8/dist-packages/nova/virt/libvirt/driver.py", line 7293, in _create_guest_with_network
 8    self._cleanup(
 9  File "/usr/local/lib/python3.8/dist-packages/oslo_utils/excutils.py", line 227, in __exit__
10    self.force_reraise()
11  File "/usr/local/lib/python3.8/dist-packages/oslo_utils/excutils.py", line 200, in force_reraise
12    raise self.value
13  File "/usr/local/lib/python3.8/dist-packages/nova/virt/libvirt/driver.py", line 7262, in _create_guest_with_network
14    guest = self._create_guest(
15  File "/usr/local/lib/python3.8/dist-packages/nova/virt/libvirt/driver.py", line 7202, in _create_guest
16    guest.launch(pause=pause)
17  File "/usr/local/lib/python3.8/dist-packages/nova/virt/libvirt/guest.py", line 168, in launch
18    LOG.exception('Error launching a defined domain with XML: %s',
19  File "/usr/local/lib/python3.8/dist-packages/oslo_utils/excutils.py", line 227, in __exit__
20    self.force_reraise()
21  File "/usr/local/lib/python3.8/dist-packages/oslo_utils/excutils.py", line 200, in force_reraise
22    raise self.value
23  File "/usr/local/lib/python3.8/dist-packages/nova/virt/libvirt/guest.py", line 165, in launch
24    return self._domain.createWithFlags(flags)
25  File "/usr/local/lib/python3.8/dist-packages/eventlet/tpool.py", line 193, in doit
26    result = proxy_call(self._autowrap, f, *args, **kwargs)
27  File "/usr/local/lib/python3.8/dist-packages/eventlet/tpool.py", line 151, in proxy_call
28    rv = execute(f, *args, **kwargs)
29  File "/usr/local/lib/python3.8/dist-packages/eventlet/tpool.py", line 132, in execute
30    six.reraise(c, e, tb)
31  File "/usr/local/lib/python3.8/dist-packages/six.py", line 719, in reraise
32    raise value
33  File "/usr/local/lib/python3.8/dist-packages/eventlet/tpool.py", line 86, in tworker
34    rv = meth(*args, **kwargs)
35  File "/usr/lib/python3/dist-packages/libvirt.py", line 1265, in createWithFlags
36    if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
37libvirt.libvirtError: internal error: qemu unexpectedly closed the monitor: 2022-08-05T12:05:46.630755Z qemu-system-x86_64: -device vfio-pci,host=0000:c3:00.0,id=hostdev0,bus=pci.0,addr=0x5: vfio 0000:c3:00.0: group 15 is not viable
38Please ensure all devices within the iommu_group are bound to their vfio bus driver.
39
40Successfully unplugged vif VIFOpenVSwitch(active=False,address=fa:16:3e:7d:97:c6,bridge_name='br-int',has_traffic_filtering=True,id=3860b4d7-48af-4e84-905e-514a7ab8c14f,network=Network(955e9ddc-604d-41dd-b2c5-df54c417615b),plugin='ovs',port_profile=VIFPortProfileOpenVSwitch,preserve_on_delete=False,vif_name='tap3860b4d7-48')
41default default] [instance: fd3de719-0fa5-44f6-ab75-bf35034d0726] Took 0.25 seconds to deallocate network for instance.
42default default] Deleted allocations for instance fd3de719-0fa5-44f6-ab75-bf35034d0726

1#!/bin/bash
2# change the 999 if needed
3shopt -s nullglob
4for d in /sys/kernel/iommu_groups/{0..999}/devices/*; do
5n=${d#*/iommu_groups/*}; n=${n%%/*}
6printf 'IOMMU Group %s ' "$n"
7lspci -nns "${d##*/}"
8done;