5ebf2e0b9b
Now there is no image status transition diagram in the dev doc, this patch will add one and keep the image source as a dot file so that it can be updated easily in the future. See http://www.graphviz.org to get more info about .dot file. Fixes bug 1244995 Change-Id: I076c461f688be93eab8d3d1fa541990d7b79da5e
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2.2 KiB
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69 lines
2.2 KiB
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Copyright 2010 OpenStack Foundation
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All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may
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not use this file except in compliance with the License. You may obtain
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a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations
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under the License.
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Image Statuses
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==============
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Images in Glance can be in one the following statuses:
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* ``queued``
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The image identifier has been reserved for an image in the Glance
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registry. No image data has been uploaded to Glance and the image
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size was not explicitly set to zero on creation.
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* ``saving``
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Denotes that an image's raw data is currently being uploaded to Glance.
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When an image is registered with a call to `POST /images` and there
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is an `x-image-meta-location` header present, that image will never be in
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the `saving` status (as the image data is already available in some other
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location).
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* ``active``
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Denotes an image that is fully available in Glance. This occurs when
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the image data is uploaded, or the image size is explicitly set to
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zero on creation.
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* ``killed``
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Denotes that an error occurred during the uploading of an image's data,
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and that the image is not readable.
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* ``deleted``
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Glance has retained the information about the image, but it is no longer
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available to use. An image in this state will be removed automatically
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at a later date.
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* ``pending_delete``
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This is similiar to `deleted`, however, Glance has not yet removed the
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image data. An image in this state is recoverable.
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.. figure:: /images/image_status_transition.png
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:figwidth: 100%
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:align: center
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:alt: Image status transition
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This is a representation of how the image move from one status to the next.
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* Add location from zero to more than one.
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* Remove location from one or more to zero by PATCH method which is only
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supported in v2. |