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Hi,

Related to instance being stuck in "image_snapshot" for extended period of time,  it is easy to "recover" the instance  (script uses pre-defined timeout to "guess" that snapshot has hung and will never complete) and bring it back to "usable" state, I also the *inform the user that their snapshot attempt has failed*.

The image goes thru the following statuses during normal case : Queued -> Saving -> Active -> Deleted
If the upload of the image fails checksum verification, status is marked as "killed" (Using _safe_kill() -  a private method)

Neither of "killed" and "deleted" instances are shown to the user either in Dashboard (Horizon) or "nova image-list"

So when "recovering" hung snapshot - what status should be set for the image ? (Such that user knows of the error)

I'm thinking that we need to  either  Introduce a new status like "error"

OR


1.       Modify glance/registry/db/api.py : image_get_all() to return images with "killed" status (currently it is explicitly filtered out)

AND

2.       Expose an API to set the image status to "killed"  (Currently _safe_kill is a private method)

When I tried #1 above locally and set status of one of the images to "killed" directly in DB,  manually then :

1.       nova image-list showed this image status as "ERROR"

2.       Dashboard/Horizon show the status as "Killed"

Please suggest if you can think of better way to handle this.

-Mandar


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