Public bug reported:
Patch https://review.openstack.org/#/c/188883/23 modified
neutron.db.ipam_backend in order to ensure a sqlalchemy event is triggered when
deleting a port. This caused an issue when transaction isolation level is below
repeatable read as the sqlalchemy ORM mapper throws an exception if the record
is deleted by another transaction.
Patch https://review.openstack.org/#/c/224289/ fixed this but reinstated
query.delete which does not trigger the sqlalchemy event.
It might be worth considering just handling the sqlalchemy orm exception
in this case; alternatively usage tracking for ports might be disabled.
A related question is why the logic for deleting a port resides in the
ipam module, but probably it should not be answered here.
** Affects: neutron
Importance: Medium
Assignee: Salvatore Orlando (salvatore-orlando)
Status: In Progress
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https://bugs.launchpad.net/bugs/1497459
Title:
port usage tracking not reliable anymore
Status in neutron:
In Progress
Bug description:
Patch https://review.openstack.org/#/c/188883/23 modified
neutron.db.ipam_backend in order to ensure a sqlalchemy event is triggered when
deleting a port. This caused an issue when transaction isolation level is below
repeatable read as the sqlalchemy ORM mapper throws an exception if the record
is deleted by another transaction.
Patch https://review.openstack.org/#/c/224289/ fixed this but reinstated
query.delete which does not trigger the sqlalchemy event.
It might be worth considering just handling the sqlalchemy orm
exception in this case; alternatively usage tracking for ports might
be disabled.
A related question is why the logic for deleting a port resides in the
ipam module, but probably it should not be answered here.
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https://bugs.launchpad.net/neutron/+bug/1497459/+subscriptions
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