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    <p>Hi team!<br>
    </p>
    <p>We are currently facing  an issue in our out-of-tree driver
      nova-dpm [1] with nova and cinder on master, where instance launch
      in devstack is failing due to communication/time-out issues in
      nova-cinder.   We are unable to get to the root cause of the issue
      and we need your help on getting some hints/directions to debug
      this issue further.</p>
    <p>--> From nova-compute service: BuildAbortException: Build of
      instance aborted: Unable to update the attachment. (HTTP 500) from
      the nova-compute server (detailed logs here [2]).   <br>
    </p>
    <p>--> From cinder-volume service: ERROR
      oslo_messaging.rpc.server VolumeAttachmentNotFound: Volume
      attachment could not be found with filter: attachment_id =
      266ef7e1-4735-40f1-b704-509472f565cb.<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server  (detailed logs here [3])</p>
    Debugging steps done so far:-<br>
    <ul>
      <li>Compared the package versions between the current devstack
        under test with the *<b>last succeeding job in our CI system</b>*
        (to be exact, it was for the patches
        <a class="moz-txt-link-freetext" href="https://review.openstack.org/#/c/458514/">https://review.openstack.org/#/c/458514/</a> and
        <a class="moz-txt-link-freetext" href="https://review.openstack.org/#/c/458820/">https://review.openstack.org/#/c/458820/</a>); However the package
        versions for packages such as sqlalchemy, os-brick, oslo* are
        exactly the same in both the systems.</li>
      <li>We used git bisect to revert nova and cinder projects to
        versions equal to or before the date of our last succeeding CI
        run; but still we were able to reproduce the same error.</li>
      <li>Our guess is that the db "Save" operation during the update of
        volume attachment is failing.  But we are unable to trace/debug
        to that point in the rpc call;  Any suggestions on how to debug
        this sceario would be really helpful.</li>
      <li>We are running devstack master on Ubuntu 16.04.04<br>
      </li>
    </ul>
    <br>
    <p>References</p>
    <p>[1] <a class="moz-txt-link-freetext" href="https://github.com/openstack/nova-dpm">https://github.com/openstack/nova-dpm</a><br>
    </p>
    <p><br>
    </p>
    <p>[2] Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.volume.cinder [None req-751d4586-cd97-4a8f-9423-f2bc4b1f1269
      service nova] Update attachment failed for attachment
      266ef7e1-4735-40f1-b704-509472f565cb. Error: Unable to update the
      attachment. (HTTP 500) (Request-ID:
      req-550f6b9c-7f22-4dce-adbe-f6843e0aa3ce) Code: 500:
      ClientException: Unable to update the attachment. (HTTP 500)
      (Request-ID: req-550f6b9c-7f22-4dce-adbe-f6843e0aa3ce)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [None
      req-751d4586-cd97-4a8f-9423-f2bc4b1f1269 service nova] [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2] Instance failed block device
      setup: ClientException: Unable to update the attachment. (HTTP
      500) (Request-ID: req-550f6b9c-7f22-4dce-adbe-f6843e0aa3ce)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2] Traceback (most recent call
      last):<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/compute/manager.py", line 1577, in
      _prep_block_device<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]    
      wait_func=self._await_block_device_map_created)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/virt/block_device.py", line 828, in
      attach_block_devices<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     _log_and_attach(device)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/virt/block_device.py", line 825, in
      _log_and_attach<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     bdm.attach(*attach_args,
      **attach_kwargs)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/virt/block_device.py", line 46, in wrapped<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     ret_val = method(obj,
      context, *args, **kwargs)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/virt/block_device.py", line 618, in attach<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     virt_driver,
      do_driver_attach)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py",
      line 274, in inner<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     return f(*args,
      **kwargs)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/virt/block_device.py", line 615, in
      _do_locked_attach<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     self._do_attach(*args,
      **_kwargs)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/virt/block_device.py", line 600, in
      _do_attach<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     do_driver_attach)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/virt/block_device.py", line 514, in
      _volume_attach<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]    
      self['mount_device'])['connection_info']<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/volume/cinder.py", line 291, in wrapper<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     res = method(self, ctx,
      *args, **kwargs)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/volume/cinder.py", line 327, in wrapper<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     res = method(self, ctx,
      attachment_id, *args, **kwargs)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/volume/cinder.py", line 736, in
      attachment_update<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     'code': getattr(ex,
      'code', None)})<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py",
      line 220, in __exit__<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     self.force_reraise()<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py",
      line 196, in force_reraise<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     six.reraise(self.type_,
      self.value, self.tb)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/volume/cinder.py", line 726, in
      attachment_update<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     attachment_id,
      _connector)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/cinderclient/v3/attachments.py",
      line 67, in update<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     resp =
      self._update('/attachments/%s' % id, body)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/cinderclient/base.py",
      line 344, in _update<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     resp, body =
      self.api.client.put(url, body=body, **kwargs)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/cinderclient/client.py",
      line 206, in put<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     return
      self._cs_request(url, 'PUT', **kwargs)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/cinderclient/client.py",
      line 191, in _cs_request<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     return self.request(url,
      method, **kwargs)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/cinderclient/client.py",
      line 177, in request<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     raise
      exceptions.from_response(resp, body)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2] ClientException: Unable to
      update the attachment. (HTTP 500) (Request-ID:
      req-550f6b9c-7f22-4dce-adbe-f6843e0aa3ce)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2] <br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [None
      req-751d4586-cd97-4a8f-9423-f2bc4b1f1269 service nova] [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2] Build of instance
      d761da60-7bb1-415e-b5b9-eaaed124d6d2 aborted: Unable to update the
      attachment. (HTTP 500) (Request-ID:
      req-550f6b9c-7f22-4dce-adbe-f6843e0aa3ce): BuildAbortException:
      Build of instance d761da60-7bb1-415e-b5b9-eaaed124d6d2 aborted:
      Unable to update the attachment. (HTTP 500) (Request-ID:
      req-550f6b9c-7f22-4dce-adbe-f6843e0aa3ce)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2] Traceback (most recent call
      last):<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/compute/manager.py", line 1839, in
      _do_build_and_run_instance<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     filter_properties,
      request_spec)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/compute/manager.py", line 2052, in
      _build_and_run_instance<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]    
      bdms=block_device_mapping)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py",
      line 220, in __exit__<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     self.force_reraise()<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py",
      line 196, in force_reraise<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     six.reraise(self.type_,
      self.value, self.tb)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/compute/manager.py", line 2004, in
      _build_and_run_instance<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     block_device_mapping) as
      resources:<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/usr/lib/python2.7/contextlib.py", line 17, in __enter__<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]     return self.gen.next()<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]   File
      "/opt/stack/nova/nova/compute/manager.py", line 2211, in
      _build_resources<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2]    
      reason=e.format_message())<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2] BuildAbortException: Build
      of instance d761da60-7bb1-415e-b5b9-eaaed124d6d2 aborted: Unable
      to update the attachment. (HTTP 500) (Request-ID:
      req-550f6b9c-7f22-4dce-adbe-f6843e0aa3ce)<br>
      Apr 25 06:41:57 zos057 nova-compute[6190]: ERROR
      nova.compute.manager [instance:
      d761da60-7bb1-415e-b5b9-eaaed124d6d2] <br>
    </p>
    <p><br>
    </p>
    <p>[3] Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments
      [req-f9f3364b-4dd8-4195-a60a-2f0e44c1f2ea
      req-550f6b9c-7f22-4dce-adbe-f6843e0aa3ce admin admin] Unable to
      update the attachment.: MessagingTimeout: Timed out waiting for a
      reply to message ID fe836528e2ea43edabe8004845837f4f<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments Traceback (most recent call last):<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
      "/opt/stack/cinder/cinder/api/v3/attachments.py", line 228, in
      update<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     connector))<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
      "/opt/stack/cinder/cinder/volume/api.py", line 2158, in
      attachment_update<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     attachment_ref.id))<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
      "/opt/stack/cinder/cinder/rpc.py", line 187, in _wrapper<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     return f(self, *args, **kwargs)<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
      "/opt/stack/cinder/cinder/volume/rpcapi.py", line 442, in
      attachment_update<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     attachment_id=attachment_id)<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
      "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/client.py",
      line 174, in call<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     retry=self.retry)<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
      "/usr/local/lib/python2.7/dist-packages/oslo_messaging/transport.py",
      line 131, in _send<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     timeout=timeout, retry=retry)<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py",
      line 559, in send<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     retry=retry)<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py",
      line 548, in _send<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     result = self._waiter.wait(msg_id,
      timeout)<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py",
      line 440, in wait<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     message = self.waiters.get(msg_id,
      timeout=timeout)<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments   File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py",
      line 328, in get<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments     'to message ID %s' % msg_id)<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments MessagingTimeout: Timed out waiting for
      a reply to message ID fe836528e2ea43edabe8004845837f4f<br>
      Apr 25 06:41:57 zos057 <a class="moz-txt-link-abbreviated" href="mailto:devstack@c-api.service">devstack@c-api.service</a>[11490]: ERROR
      cinder.api.v3.attachments <br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server
      [req-f9f3364b-4dd8-4195-a60a-2f0e44c1f2ea
      req-550f6b9c-7f22-4dce-adbe-f6843e0aa3ce admin None] Exception
      during message handling: VolumeAttachmentNotFound: Volume
      attachment could not be found with filter: attachment_id =
      266ef7e1-4735-40f1-b704-509472f565cb.<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server Traceback (most recent call last):<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server   File
      "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py",
      line 163, in _process_incoming<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server     res =
      self.dispatcher.dispatch(message)<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server   File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py",
      line 220, in dispatch<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server     return self._do_dispatch(endpoint,
      method, ctxt, args)<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server   File
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py",
      line 190, in _do_dispatch<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server     result = func(ctxt, **new_args)<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server   File
      "/opt/stack/cinder/cinder/volume/manager.py", line 4378, in
      attachment_update<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server     connector)<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server   File
      "/opt/stack/cinder/cinder/volume/manager.py", line 4349, in
      _connection_create<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server    
      self.db.volume_attachment_update(ctxt, attachment.id, values)<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server   File
      "/opt/stack/cinder/cinder/db/api.py", line 365, in
      volume_attachment_update<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server     return
      IMPL.volume_attachment_update(context, attachment_id, values)<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server   File
      "/opt/stack/cinder/cinder/db/sqlalchemy/api.py", line 182, in
      wrapper<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server     return f(*args, **kwargs)<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server   File
      "/opt/stack/cinder/cinder/db/sqlalchemy/api.py", line 2674, in
      volume_attachment_update<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server     filter='attachment_id = ' +
      attachment_id)<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server VolumeAttachmentNotFound: Volume
      attachment could not be found with filter: attachment_id =
      266ef7e1-4735-40f1-b704-509472f565cb.<br>
      Apr 25 06:42:47 zos057 cinder-volume[11475]: ERROR
      oslo_messaging.rpc.server <br>
      <br>
    </p>
    <br>
    <pre class="moz-signature" cols="72">-- 
---------------------------------------------------------------------------------------------------
Sreeram Vancheeswaran
System z Firmware - Openstack Development
IBM Systems & Technology Lab, Bangalore, India
Phone:  +91 80 40660826     Mob: +91-9341411511
Email : <a class="moz-txt-link-abbreviated" href="mailto:sreeram@linux.vnet.ibm.com">sreeram@linux.vnet.ibm.com</a></pre>
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