** Also affects: vmware-nsx
Importance: Undecided
Status: New
** No longer affects: neutron
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https://bugs.launchpad.net/bugs/1225035
Title:
nicira plugin - metadata ops in delete_router might trigger eventlet
deadlock
Status in vmware-nsx:
New
Bug description:
https://github.com/openstack/neutron/blob/master/neutron/plugins/nicira/NeutronPlugin.py#L1540
delete_router calls handle_router_metadata_access.
The latter method creates 1 network, 1 subnet, and attaches that subnet to
the router, performing db and nvp operations.
This results in a very long transaction which can trigger eventlet deadlocks
which have already been observed.
However, this is unlikely to happen in practice as router deletion is
not allowed until the last interface has been removed. This means
handle_router_metadata_access is likely to be a no-op.
while a simple fix might be just removing the metadata network mgmt
code, it might be worth keeping it there in case the logic for router
deletion might change in the future.
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