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[Ray Chen <1190583@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1188543 ***
    https://bugs.launchpad.net/bugs/1188543

in current code virt/libvirt/driver.py:_inject_data

there is one function ' injection_image.check_image_exists' to help check whether disk image is there.
if not, just print warn and do NOT handle file injection.

2511         if any((key, net, metadata, admin_pass, files)):
2512             injection_image = self.image_backend.image(
2513                 instance,
2514                 'disk' + suffix,
2515                 image_type)
2516             img_id = instance['image_ref']
2517 
2518             try:
2519                 if injection_image.check_image_exists():
2520                     disk.inject_data(injection_image.path,
2521                                      key, net, metadata, admin_pass, files,
2522                                      partition=target_partition,
2523                                      use_cow=CONF.use_cow_images,
2524                                      mandatory=('files',))
2525                 else:
2526                     LOG.warn(_LW('Image %s not found on disk storage. '
2527                                  'Continue without injecting data'),
2528                                 injection_image.path, instance=instance)
2529             except Exception as e:
2530                 with excutils.save_and_reraise_exception():
2531                     LOG.error(_LE('Error injecting data into image '
2532                                   '%(img_id)s (%(e)s)'),
2533                               {'img_id': img_id, 'e': e},
2534                               instance=instance)

reference: http://openstack.10931.n7.nabble.com/nova-libvirt-Should-
file-injection-work-for-boot-from-volume-images-td19568.html


** This bug has been marked a duplicate of bug 1188543
   NBD mount errors when booting an instance from volume

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https://bugs.launchpad.net/bugs/1190583

Title:
  ssh key injection fails for instances booted from remote volumes

Status in OpenStack Compute (Nova):
  In Progress

Bug description:
  ssh key injection expects the instance's disk image to be available
  locally and fails if the instance is booted from a remote cinder
  volume

  compute.log reports something like the following:

  WARNING nova.virt.disk.api [req-bd4be1ec-1d62-4da3-a194-b82003553709
  8165f2c0a4d945a3ad61cdfc82bc71e8 6a89483177bd4301bba60d6ebd095e52]
  Ignoring error injecting data into image (Error mounting
  /var/lib/nova/instances/c8964c15-47b6-459e-8731-bd06d05be1f1/disk with
  libguestfs
  (/var/lib/nova/instances/c8964c15-47b6-459e-8731-bd06d05be1f1/disk: No
  such file or directory))

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