yahoo-eng-team team mailing list archive

[David Rabel <1793351@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

It seems to be intended, that CONF.libvirt.snapshot_image_format defaults to the format of the source image.
That is also what the docs say. See for example https://docs.openstack.org/nova/latest/configuration/sample-config.html

If the format of the source image is raw, the raw image is only used as
a backing file with a qcow2 overlay. So find_disk() from nova's libvirt
utils will return the overlay file and qcow2 as a format.

What we want to use here is the format of the backing file.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1793351

Title:
  CONF.libvirt.snapshot_image_format does not always default to format
  of source image

Status in OpenStack Compute (nova):
  New

Bug description:
  It seems to be intended, that CONF.libvirt.snapshot_image_format defaults to the format of the source image.
  That is also what the docs say. See for example https://docs.openstack.org/nova/latest/configuration/sample-config.html

  If the format of the source image is raw, the raw image is only used
  as a backing file with a qcow2 overlay. So find_disk() from nova's
  libvirt utils will return the overlay file and qcow2 as a format.

  What we want to use here is the format of the backing file.

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