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[Pierre Riteau <1956983@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Currently, the upgrade check for older than N-1 computes only produces a warning.
For example:

Check: Older than N-1 computes
Result: Warning
Details: Current Nova version does not support computes older than
  Victoria but the minimum compute service level in your
  system is 30 and the oldest supported service level is 52.

If this is overlooked, Nova services will fail to start after upgrade.
With Nova API down, the old services cannot be removed without database
edits.

Is there a specific reason to keep this check as a warning rather than a
failure?

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1956983

Title:
  Consider making upgrade check for old computes a failure

Status in OpenStack Compute (nova):
  New

Bug description:
  Currently, the upgrade check for older than N-1 computes only produces a warning.
  For example:

  Check: Older than N-1 computes
  Result: Warning
  Details: Current Nova version does not support computes older than
    Victoria but the minimum compute service level in your
    system is 30 and the oldest supported service level is 52.

  If this is overlooked, Nova services will fail to start after upgrade.
  With Nova API down, the old services cannot be removed without
  database edits.

  Is there a specific reason to keep this check as a warning rather than
  a failure?

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