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[Chad Smith <1849731@xxxxxxxxxxxxxxxxxx>]

This bug is believed to be fixed in cloud-init in version 19.2-79. If
this is still a problem for you, please make a comment and set the state
back to New

Thank you.

** Changed in: cloud-init
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1849731

Title:
  Introduction of subplatform around 18.5 broke ConfigDrive

Status in cloud-init:
  Fix Released

Bug description:
  I create custom LXD images from Ubuntu minimal images for an OpenStack
  environment based on LXD containers and the images I created worked on
  Ubuntu 18.04 hosts until around the cloud-init v18.5 release where
  subplatform was introduced. My images produced this error:

  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/cloudinit/sources/__init__.py", line 760, in find_source
      if s.update_metadata([EventType.BOOT_NEW_INSTANCE]):
    File "/usr/lib/python3/dist-packages/cloudinit/sources/__init__.py", line 649, in update_metadata
      result = self.get_data()
    File "/usr/lib/python3/dist-packages/cloudinit/sources/__init__.py", line 276, in get_data
      self.persist_instance_data()
    File "/usr/lib/python3/dist-packages/cloudinit/sources/__init__.py", line 306, in persist_instance_data
      self._get_standardized_metadata())
    File "/usr/lib/python3/dist-packages/cloudinit/sources/__init__.py", line 246, in _get_standardized_metadata
      'subplatform': self.subplatform}}
    File "/usr/lib/python3/dist-packages/cloudinit/sources/__init__.py", line 419, in subplatform
      self._subplatform = self._get_subplatform()
    File "/usr/lib/python3/dist-packages/cloudinit/sources/DataSourceConfigDrive.py", line 170, in _get_subplatform
      return '%s (%s)' % (subplatform_type, self.source)

  This code uses and if/elif which leaves subplatform_type undefined on
  my image. I don't have any idea what this is supposed to be, but
  looking at other DataSources, they use an if/else so that
  subplatform_type is alway defined. The diff that makes this work for
  me and works like other DataSources is attached.

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