yahoo-eng-team team mailing list archive

[Peter Sabaini <1906266@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

In a site upgraded to Ussuri we are getting faults starting instances

2020-11-30 13:41:40.586 232871 ERROR oslo_messaging.rpc.server
libvirt.libvirtError: Requested operation is not valid: format of
backing image '/var/lib/nova/instances/_base/xxx' of image
'/var/lib/nova/instances/xxx' was not specified in the image metadata
(See https://libvirt.org/kbase/backing_chains.html for troubleshooting)

Bug #1864020 reports similar symptoms, where due to an upstream change
in Libvirt v6.0.0+ images need the backing format specified.

The fix for Bug #1864020 handles the case for new instances. However,
for upgraded instances we're hitting the same problem, as those still
don't have backing format specified.

** Affects: nova
     Importance: Undecided
         Status: New

** Summary changed:

- libvirt.libvirtError: Requested operation is not valid: format of backing image %s of image %s was not specified
+ After upgrade: "libvirt.libvirtError: Requested operation is not valid: format of backing image %s of image %s was not specified"

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https://bugs.launchpad.net/bugs/1906266

Title:
  After upgrade: "libvirt.libvirtError: Requested operation is not
  valid: format of backing image %s of image %s was not specified"

Status in OpenStack Compute (nova):
  New

Bug description:
  In a site upgraded to Ussuri we are getting faults starting instances

  2020-11-30 13:41:40.586 232871 ERROR oslo_messaging.rpc.server
  libvirt.libvirtError: Requested operation is not valid: format of
  backing image '/var/lib/nova/instances/_base/xxx' of image
  '/var/lib/nova/instances/xxx' was not specified in the image metadata
  (See https://libvirt.org/kbase/backing_chains.html for
  troubleshooting)

  Bug #1864020 reports similar symptoms, where due to an upstream change
  in Libvirt v6.0.0+ images need the backing format specified.

  The fix for Bug #1864020 handles the case for new instances. However,
  for upgraded instances we're hitting the same problem, as those still
  don't have backing format specified.

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