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[OpenStack Infra <1733274@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/521457
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=7d005079f360c490e915b4f862295de9cb1c8e7e
Submitter: Zuul
Branch:    master

commit 7d005079f360c490e915b4f862295de9cb1c8e7e
Author: Abhishek Kekane <akekane@xxxxxxxxxx>
Date:   Mon Nov 20 07:38:29 2017 +0000

    Fix 500 from duplicate stage call
    
    1. When user calls stage command again then it fails with 500 internal
    server error. This is because after stage call image status changes
    to 'uploading' and for second call it again tries to set status to
    'uploading' and fails with 'InvalidImageStatusTransition: Image
    status transition from uploading to uploading is not allowed'
    exception which is not caught at the controller side.
    
    2. If image upload (/file call) is in progress image is in saving
    state at that time. If user tries to make a /stage call on same image
    then it returns 500 internal server error as Image transition from
    saving to uploading is not allowed.
    
    Caught 'InvalidImageStatusTransition' and return 409 HTTPConflict
    resonse status.
    
    Change-Id: Ie66d3e3474b38b2f6c8d31f5c1fb252d45cbd3c9
    Closes-Bug: #1733274
    Closes-Bug: #1733512


** Changed in: glance
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1733274

Title:
  Second stage call (re-staging) fails with 500 Internal server error

Status in Glance:
  Fix Released

Bug description:
  When user calls stage command again then it fails with 500 internal server error.
  This is because after stage call image status changes to 'uploading' and for second call it again tries to set status to 'uploading' and fails with 'InvalidImageStatusTransition: Image status transition from uploading to uploading is not allowed' exception which is not caught at the controller side.

  Steps to reproduce:
  1. Create image
     $ glance image-create --container-format ami --disk-format ami --name cirros_image
  2. Add image to staging area using stage call
     $ glance image-stage <IMAGE_ID>
  3. Again run the same call
     $ glance image-stage <IMAGE_ID>

  Output:
  Traceback (most recent call last):
    File "/usr/lib/python2.7/site-packages/glanceclient/shell.py", line 699, in main
      OpenStackImagesShell().main(argv)
    File "/usr/lib/python2.7/site-packages/glanceclient/shell.py", line 603, in main
      args.func(client, args)
    File "/usr/lib/python2.7/site-packages/glanceclient/v2/shell.py", line 410, in do_image_stage
      gc.images.stage(args.id, image_data, args.size)
    File "/usr/lib/python2.7/site-packages/glanceclient/common/utils.py", line 545, in inner
      return RequestIdProxy(wrapped(*args, **kwargs))
    File "/usr/lib/python2.7/site-packages/glanceclient/v2/images.py", line 252, in stage
      u_url=url)
    File "/usr/lib/python2.7/site-packages/glanceclient/common/utils.py", line 545, in inner
      return RequestIdProxy(wrapped(*args, **kwargs))
    File "/usr/lib/python2.7/site-packages/glanceclient/v2/images.py", line 232, in upload
      resp, body = self.http_client.put(url, headers=hdrs, data=body)
    File "/usr/lib/python2.7/site-packages/keystoneauth1/adapter.py", line 313, in put
      return self.request(url, 'PUT', **kwargs)
    File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 349, in request
      return self._handle_response(resp)
    File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 98, in _handle_response
      raise exc.from_response(resp, resp.content)
  HTTPInternalServerError: 500 Internal Server Error: The server has either erred or is incapable of performing the requested operation. (HTTP 500) 500 Internal Server Error: The server has either erred or is incapable of performing the requested operation. (HTTP 500)

  
  g-api logs:
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi [None req-c6c78013-c211-492a-80df-694119e4b76f admin admin] Caught error: Image status transition from uploading to uploading is not allowed: InvalidImageStatusTransition: Image status transition from uploading to uploading is not allowed
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi Traceback (most recent call last):
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/common/wsgi.py", line 1222, in __call__
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     request, **action_args)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/common/wsgi.py", line 1261, in dispatch
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     return method(*args, **kwargs)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/common/utils.py", line 363, in wrapped
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     return func(self, req, *args, **kwargs)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/api/v2/image_data.py", line 343, in stage
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     self._restore(image_repo, image)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     self.force_reraise()
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     six.reraise(self.type_, self.value, self.tb)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/api/v2/image_data.py", line 299, in stage
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     image.status = 'uploading'
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/domain/proxy.py", line 23, in set_attr
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     return setattr(getattr(self, target), attr, value)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/domain/proxy.py", line 23, in set_attr
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     return setattr(getattr(self, target), attr, value)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/domain/proxy.py", line 23, in set_attr
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     return setattr(getattr(self, target), attr, value)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/domain/proxy.py", line 23, in set_attr
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     return setattr(getattr(self, target), attr, value)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/domain/proxy.py", line 23, in set_attr
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     return setattr(getattr(self, target), attr, value)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/domain/proxy.py", line 23, in set_attr
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     return setattr(getattr(self, target), attr, value)
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi   File "/opt/stack/glance/glance/domain/__init__.py", line 151, in status
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi     raise e
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi InvalidImageStatusTransition: Image status transition from uploading to uploading is not allowed
  Nov 20 06:16:54 devstack devstack@g-api.service[15827]: ERROR glance.common.wsgi

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