Public bug reported:
Currently Glance architecture (domain model) is affected by possible
race conditions during image status transition. To eliminate this there
was introduced a parameter called 'from_state' in 'save' method for
ImageRepo. Unfortunately it only checks if transition happened from
'saving' to 'active':
https://github.com/openstack/glance/blob/master/glance/api/v2/image_data.py#L117
Other cases are still not fixed and it leads to the fact that admin can
reactivate deleted image and it will have status 'active'. Also Glance
rewrites the status even if it didn't change. To fix it it's suggested
to use 'from_state' parameters in other places, where race conditions
may happen.
** Affects: glance
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1557495
Title:
Possible race conditions when changing image status in v2
Status in Glance:
New
Bug description:
Currently Glance architecture (domain model) is affected by possible
race conditions during image status transition. To eliminate this
there was introduced a parameter called 'from_state' in 'save' method
for ImageRepo. Unfortunately it only checks if transition happened
from 'saving' to 'active':
https://github.com/openstack/glance/blob/master/glance/api/v2/image_data.py#L117
Other cases are still not fixed and it leads to the fact that admin
can reactivate deleted image and it will have status 'active'. Also
Glance rewrites the status even if it didn't change. To fix it it's
suggested to use 'from_state' parameters in other places, where race
conditions may happen.
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https://bugs.launchpad.net/glance/+bug/1557495/+subscriptions
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