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[Launchpad Bug Tracker <1408477@xxxxxxxxxxxxxxxxxx>]

[Expired for OpenStack Compute (nova) because there has been no activity
for 60 days.]

** Changed in: nova
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1408477

Title:
  Live Migration Fails with NFS-Backed Cinder Volumes

Status in OpenStack Compute (Nova):
  Expired

Bug description:
  I am running RDO Icehouse-4 (reports version as 2.17.0) on CentOS 7
  using QEMU-KVM / Libvirt

  When issuing the 'live-migrate' command to move a virtual machine with
  NFS-backed Cinder volume to another Hypervisor, I receive the
  following error in the nova-compute.log file on the source Hypervisor:

  2015-01-02 10:33:36.291 7376 ERROR oslo.messaging._drivers.common [-]
  ['Traceback (most recent call last):\n', '  File "/usr/lib/python2.7
  /site-packages/oslo/messaging/rpc/dispatcher.py", line 133, in
  _dispatch_and_reply\n    incoming.message))\n', '  File
  "/usr/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py",
  line 176, in _dispatch\n    return self._do_dispatch(endpoint, method,
  ctxt, args)\n', '  File "/usr/lib/python2.7/site-
  packages/oslo/messaging/rpc/dispatcher.py", line 122, in
  _do_dispatch\n    result = getattr(endpoint, method)(ctxt,
  **new_args)\n', '  File "/usr/lib/python2.7/site-
  packages/nova/exception.py", line 88, in wrapped\n    payload)\n', '
  File "/usr/lib/python2.7/site-
  packages/nova/openstack/common/excutils.py", line 68, in __exit__\n
  six.reraise(self.type_, self.value, self.tb)\n', '  File
  "/usr/lib/python2.7/site-packages/nova/exception.py", line 71, in
  wrapped\n    return f(self, context, *args, **kw)\n', '  File
  "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 303,
  in decorated_function\n    e, sys.exc_info())\n', '  File
  "/usr/lib/python2.7/site-packages/nova/openstack/common/excutils.py",
  line 68, in __exit__\n    six.reraise(self.type_, self.value,
  self.tb)\n', '  File "/usr/lib/python2.7/site-
  packages/nova/compute/manager.py", line 290, in decorated_function\n
  return function(self, context, *args, **kwargs)\n', '  File
  "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 4483,
  in check_can_live_migrate_source\n    dest_check_data)\n', '  File
  "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line
  4296, in check_can_live_migrate_source\n    raise
  exception.InvalidSharedStorage(reason=reason, path=source)\n',
  'InvalidSharedStorage: openstack-compute01-test.domain.local is not on
  shared storage: Live migration can not be used without shared
  storage.\n']

  I have seen various references to similar bugs, but those didn't
  appear to affect the combination of Icehouse and QEMU-KVM / Libvirt.
  Is anyone else experiencing this issue in Icehouse?

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