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[Bug 1162382] Re: LVM over ISCSI as default SR not working

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>
Date: Thu, 05 Sep 2013 15:48:11 -0000
Reply-to: Bug 1162382 <1162382@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => havana-3

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https://bugs.launchpad.net/bugs/1162382

Title:
  LVM over ISCSI as default SR not working

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  Hi

  I have XCP pool with shared storage working on LVM over ISCSI. When I
  try to create a VM I get the following (version 2013.1):

  2013-03-30 22:49:02.711 ERROR nova.compute.manager [req-34dfe80c-76ab-40e9-81ba-4d20af45ea33 admin admin] [instance: 4436ad73-8d86-4982-97db-49f921beac55] Instance failed to spawn
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55] Traceback (most recent call last):
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/compute/manager.py", line 1055, in _spawn
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     block_device_info)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 171, in spawn
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     admin_password, network_info, block_device_info)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/vmops.py", line 468, in spawn
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     undo_mgr.rollback_and_reraise(msg=msg, instance=instance)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/utils.py", line 1250, in rollback_and_reraise
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     self._rollback()
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     self.gen.next()
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/vmops.py", line 451, in spawn
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     vdis = create_disks_step(undo_mgr, disk_image_type, image_meta)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/vmops.py", line 142, in inner
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     rv = f(*args, **kwargs)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/vmops.py", line 334, in create_disks_step
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     block_device_info=block_device_info)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/vmops.py", line 305, in _create_disks
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     block_device_info=block_device_info)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/vm_utils.py", line 518, in get_vdis_for_instance
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     context, session, instance, name_label, image, image_type)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/vm_utils.py", line 974, in _create_image
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     image_id, image_type)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/vm_utils.py", line 931, in _create_cached_image
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     new_vdi_ref = _safe_copy_vdi(session, sr_ref, instance, root_vdi_ref)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/vm_utils.py", line 566, in _safe_copy_vdi
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     vdi_uuids=vdi_uuids, uuid_stack=_make_uuid_stack())
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 733, in call_plugin_serialized
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     rv = self.call_plugin(plugin, fn, params)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 729, in call_plugin
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     host, plugin, fn, args)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 743, in _unwrap_plugin_exceptions
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     return func(*args, **kwargs)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/usr/local/lib/python2.7/dist-packages/XenAPI.py", line 229, in __call__
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     return self.__send(self.__name, args)
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/usr/local/lib/python2.7/dist-packages/XenAPI.py", line 133, in xenapi_request
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     result = _parse_result(getattr(self, methodname)(*full_params))
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]   File "/usr/local/lib/python2.7/dist-packages/XenAPI.py", line 203, in _parse_result
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55]     raise Failure(result['ErrorDescription'])
  2013-03-30 22:49:02.711 TRACE nova.compute.manager [instance: 4436ad73-8d86-4982-97db-49f921beac55] Failure: ['XENAPI_PLUGIN_FAILURE', 'safe_copy_vdis', 'OSError', "[Errno 2] No such file or directory: '/var/run/sr-mount/4bf0449e-4a06-9324-0688-08c553b3ab57/tmpm9WMto'"]

  I'm new to openstack, but seems like nova tries to use it as ext local
  storage. Is this a bug or this type of storage is not supported?

  Thanks

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