Public bug reported:
Root cause analysis of http://logs.openstack.org/01/410501/5/gate/gate-
tempest-dsvm-neutron-full-ubuntu-xenial/3f7b603/ race condition:
* shows that port for VM did not go to ACTIVE because DHCP agent didn't notify
server that it setup the DHCP reservation.
* DHCP agent didn't setup the reservation because it didn't have the network in
its cache yet when it received the port update but it had already started
wiring the network in another thread
* the port didn't exist on the server when the network setup thread asked the
server for all ports on the network
So fix is that port_update needs to acquire network lock even if network
doesn't appear to be in cache.
** Affects: neutron
Importance: Undecided
Assignee: Kevin Benton (kevinbenton)
Status: In Progress
** Tags: gate-failure
** Changed in: neutron
Assignee: (unassigned) => Kevin Benton (kevinbenton)
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https://bugs.launchpad.net/bugs/1659919
Title:
dhcp agent race with port update and network create
Status in neutron:
In Progress
Bug description:
Root cause analysis of http://logs.openstack.org/01/410501/5/gate
/gate-tempest-dsvm-neutron-full-ubuntu-xenial/3f7b603/ race condition:
* shows that port for VM did not go to ACTIVE because DHCP agent didn't
notify server that it setup the DHCP reservation.
* DHCP agent didn't setup the reservation because it didn't have the network
in its cache yet when it received the port update but it had already started
wiring the network in another thread
* the port didn't exist on the server when the network setup thread asked the
server for all ports on the network
So fix is that port_update needs to acquire network lock even if network
doesn't appear to be in cache.
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https://bugs.launchpad.net/neutron/+bug/1659919/+subscriptions
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