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[Mike Durnosvistov <mdurnosvistov@xxxxxxxxxxxx>]

Public bug reported:

If we create an instance with the default ephemeral disk and then to re-
size it down, we get wrong ephemeral size.

    eph_size = (block_device.get_bdm_ephemeral_disk_size(ephemerals)

It will return 0, if you don't create an ephemeral disk by the means of
--block-device explicitly - nova will create a 'default' ephemeral disk
for you, which won't be listed in block device mapping.

** Affects: nova
     Importance: Undecided
     Assignee: Mike Durnosvistov (mdurnosvistov)
         Status: New


** Tags: libvirt

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https://bugs.launchpad.net/bugs/1428072

Title:
  Don't allow to resize down the default ephemeral disk

Status in OpenStack Compute (Nova):
  New

Bug description:
  If we create an instance with the default ephemeral disk and then to
  re-size it down, we get wrong ephemeral size.

      eph_size = (block_device.get_bdm_ephemeral_disk_size(ephemerals)

  It will return 0, if you don't create an ephemeral disk by the means
  of --block-device explicitly - nova will create a 'default' ephemeral
  disk for you, which won't be listed in block device mapping.

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