Public bug reported: I ran into a problem when the list of networks filtered by segment ID does not match the expected list. An important condition is the parallel removal of another network.
Here is a demo: Console 1: $ while :; do openstack network create test-net --provider-segment 200 --provider-network-type vxlan >/dev/null; openstack network delete test-net; done Console 2: $ for i in {0..1000}; do net=$(openstack network list --provider-segment 100); [[ -n "${net}" ]] && echo "${net}" && echo "Iter=$i" && break; done +--------------------------------------+----------+---------+ | ID | Name | Subnets | +--------------------------------------+----------+---------+ | 64ccd339-c669-4b8b-9d11-758e98295955 | test-net | | +--------------------------------------+----------+---------+ Iter=81 $ A log file has a message: 2022-09-22 20:13:15.706 25 DEBUG neutron.plugins.ml2.managers [None req-4c379e00-4794-4625-afe7-64643aa801cf 4f5e975fb1044192a4930fd01ca7d9d7 1958e62e718f468299ae302a12364c08 - default default] Network 64ccd339-c669-4b8b-9d11-758e98295955 has no segments extend_network_with_provider_segments /usr/lib64/python3.6/site-packages/neutron/plugins/ml2/managers.py:169 So, it looks like there is a race condition. OS version: Xena ** Affects: neutron Importance: Undecided Status: New -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1990561 Title: Network filtering by provider attributes has a race condition with network removal Status in neutron: New Bug description: I ran into a problem when the list of networks filtered by segment ID does not match the expected list. An important condition is the parallel removal of another network. Here is a demo: Console 1: $ while :; do openstack network create test-net --provider-segment 200 --provider-network-type vxlan >/dev/null; openstack network delete test-net; done Console 2: $ for i in {0..1000}; do net=$(openstack network list --provider-segment 100); [[ -n "${net}" ]] && echo "${net}" && echo "Iter=$i" && break; done +--------------------------------------+----------+---------+ | ID | Name | Subnets | +--------------------------------------+----------+---------+ | 64ccd339-c669-4b8b-9d11-758e98295955 | test-net | | +--------------------------------------+----------+---------+ Iter=81 $ A log file has a message: 2022-09-22 20:13:15.706 25 DEBUG neutron.plugins.ml2.managers [None req-4c379e00-4794-4625-afe7-64643aa801cf 4f5e975fb1044192a4930fd01ca7d9d7 1958e62e718f468299ae302a12364c08 - default default] Network 64ccd339-c669-4b8b-9d11-758e98295955 has no segments extend_network_with_provider_segments /usr/lib64/python3.6/site-packages/neutron/plugins/ml2/managers.py:169 So, it looks like there is a race condition. OS version: Xena To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1990561/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp