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["Dmitry \"Divius\" Tantsur" <divius.inside@xxxxxxxxx>]

** Summary changed:

- Setting instance default_ephemeral_device should be more intelligent
+ Setting instance default_ephemeral_device in Ironic driver should be more intelligent

** Also affects: nova
   Importance: Undecided
       Status: New

** Tags added: ironic

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https://bugs.launchpad.net/bugs/1328939

Title:
  Setting instance default_ephemeral_device in Ironic driver should be
  more intelligent

Status in OpenStack Bare Metal Provisioning Service (Ironic):
  Triaged
Status in OpenStack Compute (Nova):
  New

Bug description:
  The instance default_ephemeral_device value needs to be set within the
  nova driver to the partition where the ephemeral partition is created.
  We currently hard code this value to /dev/sda1 to duplicate the old
  nova-bm behavior. While this makes things work for TripleO [1], we
  should do something smarter to determine the true partition value to
  set (e.g., a Cirros image value should be /dev/vda1).

  We could consider using something like udev by-label names (e.g.,
  /dev/disk/by-label/NNN). This obviously adds a requirement on udev.

  [1] https://bugs.launchpad.net/ironic/+bug/1324286

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