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Furthermore I am not able to reproduce bug on q35 hardware type  - only on i440fx.

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openstack image set --property hw_machine_type=q35 IMAGE_NAME


Best regards, 
Bartosz Bezak




> On 25 Feb 2021, at 12:51, Bartosz Bezak <bartosz at stackhpc.com> wrote:
> 
> Hi, 
> I have noticed that this problem occurs while attaching second NIC while using qemu-kvm-5.1.0-14.el8.1.x86_64 and 1 vcpu instances. Downgrading to qemu-kvm-4.2.0-29.el8.3.x86_64 or changing flavour to 2 vcpu fixes problem.
> Failing ubuntu guests that I tested -  bionic, focal, groovy and hirsute from https://cloud-images.ubuntu.com <https://cloud-images.ubuntu.com/>. Centos8 cloud image guests works fine though.
> I’ve raised bug to nova - https://bugs.launchpad.net/nova/+bug/1916879 <https://bugs.launchpad.net/nova/+bug/1916879>
> 
> 
> 04.02.2021, 12:40, "Jonathan Rosser" <jonathan.rosser at rd.bbc.co.uk <http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-discuss>>:
> > I'm seeing very similar errors on patches we are trying to merge in openstack-ansible. Same sort of trouble with Centos breaking and Ubuntu working. References to logs with errors like yours are in the comments on this patch https://review.opendev.org/c/openstack/openstack-ansible-os_octavia/+/768514 <https://review.opendev.org/c/openstack/openstack-ansible-os_octavia/+/768514>
> >
> > I was trying to find something specific we are doing wrong on Centos in openstack-ansible deployments but feels like there maybe some common Centos related factor here.
> > On 04/02/2021 10:11, W Ch wrote:
> >> Hi:
> >>
> >> Recently, we added a CI task[0] for octavia in the kolla project. and we tested octavia based on the ubuntu and centos systems.
> >>
> >> The ubuntu system worked as expected but Centos did not work.
> >>
> >> I tried to debug it and result is following:
> >>
> >> Octavia can not create a load balancer on centos8. because octavia-worker failed to plug a vip port on amphora vm.[1]
> >>
> >> 2021-01-31 08:20:12.065 22 ERROR octavia.compute.drivers.nova_driver [-] Error attaching network None with ip None and port 26a39187-e95a-4131-91e7-24289e777f36 to amphora (compute_id: a210ec88-b554-487f-a125-30b5c7473060) : novaclient.exceptions.ClientException: Unknown Error (HTTP 504)
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs [-] Error plugging amphora (compute_id: a210ec88-b554-487f-a125-30b5c7473060) into port 26a39187-e95a-4131-91e7-24289e777f36.: octavia.common.exceptions.ComputeUnknownException: Unknown exception from the compute driver: Unknown Error (HTTP 504).
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs Traceback (most recent call last):
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs File "/var/lib/kolla/venv/lib/python3.6/site-packages/octavia/compute/drivers/nova_driver.py", line 318, in attach_network_or_port
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs port_id=port_id)
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs File "/var/lib/kolla/venv/lib/python3.6/site-packages/novaclient/api_versions.py", line 393, in substitution
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs return methods[-1].func(obj, *args, **kwargs)
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs File "/var/lib/kolla/venv/lib/python3.6/site-packages/novaclient/v2/servers.py", line 2063, in interface_attach
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs obj_class=NetworkInterface)
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs File "/var/lib/kolla/venv/lib/python3.6/site-packages/novaclient/base.py", line 363, in _create
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs resp, body = self.api.client.post(url, body=body)
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs File "/var/lib/kolla/venv/lib/python3.6/site-packages/keystoneauth1/adapter.py", line 401, in post
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs return self.request(url, 'POST', **kwargs)
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs File "/var/lib/kolla/venv/lib/python3.6/site-packages/novaclient/client.py", line 78, in request
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs raise exceptions.from_response(resp, body, url, method)
> >> 2021-01-31 08:20:12.066 22 ERROR octavia.network.drivers.neutron.allowed_address_pairs novaclient.exceptions.ClientException: Unknown Error (HTTP 504)
> >>
> >> Octavia-work called Neutron API to create a port. And called nova-api to attach the vip to amphora.
> >>
> >> Neutron created port successfully, but nova failed to attach the port to instance.[2]
> >>
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [req-ab0e8d9b-664b-430f-8006-cad713b0c826 401ba22da5f8427fbda5fce24600041b 8ce8b97f710f43d7af2b8f9b1e0463c8 - default default] [instance: a210ec88-b554-487f-a125-30b5c7473060] attaching network adapter failed.: libvirt.libvirtError: Unable to read from monitor: Connection reset by peer
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] Traceback (most recent call last):
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] File "/var/lib/kolla/venv/lib/python3.6/site-packages/nova/virt/libvirt/driver.py", line 2149, in attach_interface
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] guest.attach_device(cfg, persistent=True, live=live)
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] File "/var/lib/kolla/venv/lib/python3.6/site-packages/nova/virt/libvirt/guest.py", line 304, in attach_device
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] self._domain.attachDeviceFlags(device_xml, flags=flags)
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] File "/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 190, in doit
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] result = proxy_call(self._autowrap, f, *args, **kwargs)
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] File "/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 148, in proxy_call
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] rv = execute(f, *args, **kwargs)
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] File "/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 129, in execute
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] six.reraise(c, e, tb)
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] File "/usr/lib/python3.6/site-packages/six.py", line 703, in reraise
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] raise value
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] File "/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 83, in tworker
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] rv = meth(*args, **kwargs)
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] File "/usr/lib64/python3.6/site-packages/libvirt.py", line 630, in attachDeviceFlags
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] if ret == -1: raise libvirtError ('virDomainAttachDeviceFlags() failed', dom=self)
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060] libvirt.libvirtError: Unable to read from monitor: Connection reset by peer
> >> 2021-01-31 08:20:23.945 8 ERROR nova.virt.libvirt.driver [instance: a210ec88-b554-487f-a125-30b5c7473060]
> >>
> >> Nova-compute called libvirt to attach the device. And libvirt also failed to attach the device[3]
> >>
> >> 2021-01-31 08:20:23.884+0000: 86663: error : qemuMonitorIORead:491 : Unable to read from monitor: Connection reset by peer
> >> 2021-01-31 08:20:23.884+0000: 86663: debug : qemuMonitorIO:618 : Error on monitor Unable to read from monitor: Connection reset by peer
> >> 2021-01-31 08:20:23.884+0000: 86663: info : virObjectRef:402 : OBJECT_REF: obj=0x7f004c00b610
> >> 2021-01-31 08:20:23.884+0000: 86663: debug : qemuMonitorIO:649 : Triggering error callback
> >> 2021-01-31 08:20:23.884+0000: 86663: debug : qemuProcessHandleMonitorError:346 : Received error on 0x7f004c0095b0 'instance-00000001'
> >> 2021-01-31 08:20:23.884+0000: 64768: debug : qemuMonitorSend:958 : Send command resulted in error Unable to read from monitor: Connection reset by peer
> >>
> >> I also tried to use kolla/ubuntu-source-nova-libvirt instead of kolla/centos-source-nova-libvirt. and it worked as expected.
> >>
> >> I think the root cause is that libvirt failed to attach a network device. but i don't know how to resolve this problem.
> >>
> >> could anyone help me?
> >>
> >> Thanks
> >>
> >> Wuchunyang
> >>
> >> [0]: https://review.opendev.org/c/openstack/kolla-ansible/+/754285 <https://review.opendev.org/c/openstack/kolla-ansible/+/754285>
> >> [1]: https://zuul.opendev.org/t/openstack/build/e4b8c62c44a64b96bc287ba2ba2315f0/log/primary/logs/kolla/octavia/octavia-worker.txt#1116 <https://zuul.opendev.org/t/openstack/build/e4b8c62c44a64b96bc287ba2ba2315f0/log/primary/logs/kolla/octavia/octavia-worker.txt#1116>
> >> [2]: https://zuul.opendev.org/t/openstack/build/e4b8c62c44a64b96bc287ba2ba2315f0/log/primary/logs/kolla/nova/nova-compute.txt#2546 <https://zuul.opendev.org/t/openstack/build/e4b8c62c44a64b96bc287ba2ba2315f0/log/primary/logs/kolla/nova/nova-compute.txt#2546>
> >> [3]: https://zuul.opendev.org/t/openstack/build/e4b8c62c44a64b96bc287ba2ba2315f0/log/primary/logs/kolla/libvirt/libvirtd.txt#194472 <https://zuul.opendev.org/t/openstack/build/e4b8c62c44a64b96bc287ba2ba2315f0/log/primary/logs/kolla/libvirt/libvirtd.txt#194472>
> Best regards, 
> Bartosz Bezak
> 
> 
> 
> 
> 

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