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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Public bug reported:

The createBackup API does not support backing up volume-backed
instances:

https://github.com/openstack/nova/blob/a24ce5b12776c854a473b4fb6a9f3c27731d3af9/nova/compute/api.py#L2782

This is not mentioned anywhere in the API reference for that API, nor is
the message in the 400 error response helpful, it just says "The request
is invalid.".

The docs and error message should be improved to note the limitation for
volume-backed instances.

** Affects: nova
     Importance: Low
     Assignee: Matt Riedemann (mriedem)
         Status: Triaged


** Tags: api-ref

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https://bugs.launchpad.net/bugs/1679314

Title:
  createBackup docs don't mention it doesn't work with volume-backed
  instances

Status in OpenStack Compute (nova):
  Triaged

Bug description:
  The createBackup API does not support backing up volume-backed
  instances:

  https://github.com/openstack/nova/blob/a24ce5b12776c854a473b4fb6a9f3c27731d3af9/nova/compute/api.py#L2782

  This is not mentioned anywhere in the API reference for that API, nor
  is the message in the 400 error response helpful, it just says "The
  request is invalid.".

  The docs and error message should be improved to note the limitation
  for volume-backed instances.

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