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[Bug 1290302] Re: Booting from volume fails when the device_name is not specified

 

** Changed in: nova
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1290302

Title:
  Booting from volume fails when the device_name is not specified

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  With current nova in master, when booting an instance using an
  existing volume without specifying the device_name fails with the
  following traceback in nova compute:

  $ nova boot --boot-volume f1f2de9c-eedf-41cf-9089-a41ec0706b3e
  --flavor m1.custom --key-name default server --poll

  2014-03-10 05:48:27.735 DEBUG oslo.messaging._drivers.amqp [-] UNIQUE_ID is 38af8a6ad88649449919434f9facd899. from (pid=21192) _add_unique_id /opt/stack/oslo.messaging/oslo/messaging/_drivers/amqp.py:338
  2014-03-10 05:48:27.750 ERROR nova.compute.manager [req-f7b15296-7be8-4cc5-9e8c-1ea3658baa7e admin admin] [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660] Error: '<class 'nova.objects.block_device.BlockDeviceMapping'>' object has no attribute 'mount_device'
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660] Traceback (most recent call last):
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]   File "/opt/stack/nova/nova/compute/manager.py", line 1242, in _build_instance
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]     bdms)
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]   File "/opt/stack/nova/nova/compute/manager.py", line 1573, in _default_block_device_names
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]     root_bdm)
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]   File "/opt/stack/nova/nova/compute/manager.py", line 1530, in _default_root_device_name
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]     root_bdm)
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]   File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 5084, in default_root_device_name
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]     cdrom_bus)
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]   File "/opt/stack/nova/nova/virt/libvirt/blockinfo.py", line 422, in get_root_info
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]     if not get_device_name(root_bdm) and root_device_name:
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]   File "/opt/stack/nova/nova/virt/libvirt/blockinfo.py", line 392, in get_device_name
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]     return bdm.get('device_name') or bdm.get('mount_device')
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]   File "/opt/stack/nova/nova/objects/base.py", line 411, in get
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]     self.__class__, key))
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660] AttributeError: '<class 'nova.objects.block_device.BlockDeviceMapping'>' object has no attribute 'mount_device'
  2014-03-10 05:48:27.750 TRACE nova.compute.manager [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660] 
  2014-03-10 05:48:27.753 DEBUG nova.compute.utils [req-f7b15296-7be8-4cc5-9e8c-1ea3658baa7e admin admin] [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660] Build of instance 7ce5a209-49a3-417b-aa0d-0ccf066dc660 was re-scheduled: '<class 'nova.objects.block_device.BlockDeviceMapping'>' object has no attribute 'mount_device' from (pid=21192) notify_about_instance_usage /opt/stack/nova/nova/compute/utils.py:334
  2014-03-10 05:48:27.753 TRACE nova.compute.utils [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660] Traceback (most recent call last):
  2014-03-10 05:48:27.753 TRACE nova.compute.utils [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]   File "/opt/stack/nova/nova/compute/manager.py", line 1134, in _run_instance
  2014-03-10 05:48:27.753 TRACE nova.compute.utils [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]     instance, image_meta, legacy_bdm_in_spec)
  2014-03-10 05:48:27.753 TRACE nova.compute.utils [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]   File "/opt/stack/nova/nova/compute/manager.py", line 1293, in _build_instance
  2014-03-10 05:48:27.753 TRACE nova.compute.utils [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660]     reason=unicode(exc_info[1]))
  2014-03-10 05:48:27.753 TRACE nova.compute.utils [instance: 7ce5a209-49a3-417b-aa0d-0ccf066dc660] RescheduledException: Build of instance 7ce5a209-49a3-417b-aa0d-0ccf066dc660 was re-scheduled: '<class 'nova.objects.block_device.BlockDeviceMapping'>' object has no attribute 'mount_device'
  2014-03-10 05:48:27.753 TRACE nova.compute.

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References