Image Statuses

Images in Glance can be in one the following statuses:

  • queued

    The image identifier has been reserved for an image in the Glance registry. No image data has been uploaded to Glance and the image size was not explicitly set to zero on creation.

  • saving

    Denotes that an image’s raw data is currently being uploaded to Glance. When an image is registered with a call to POST /images and there is an x-image-meta-location header present, that image will never be in the saving status (as the image data is already available in some other location).

  • active

    Denotes an image that is fully available in Glance. This occurs when the image data is uploaded, or the image size is explicitly set to zero on creation.

  • killed

    Denotes that an error occurred during the uploading of an image’s data, and that the image is not readable.

  • deleted

    Glance has retained the information about the image, but it is no longer available to use. An image in this state will be removed automatically at a later date.

  • pending_delete

    This is similar to deleted, however, Glance has not yet removed the image data. An image in this state is recoverable.

Image status transition

This is a representation of how the image move from one status to the next.

  • Add location from zero to more than one.
  • Remove location from one or more to zero by PATCH method which is only supported in v2.

Task Statuses

Tasks in Glance can be in one the following statuses:

  • pending

    The task identifier has been reserved for a task in the Glance. No processing has begun on it yet.

  • processing

    The task has been picked up by the underlying executor and is being run using the backend Glance execution logic for that task type.

  • success

    Denotes that the task has had a successful run within Glance. The result field of the task shows more details about the outcome.

  • failure

    Denotes that an error occurred during the execution of the task and it cannot continue processing. The message field of the task shows what the error was.

Table Of Contents

Previous topic

Image Identifiers

Next topic

Disk and Container Formats

This Page