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[Ashutosh Tiwari <1948452@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Release version:
Neutron: stable/Ussuri
(Open vSwitch) 2.11.1


on searching the issue i see this raised earlier on Mirantis Openstack,
https://bugs.launchpad.net/mos/+bug/1711637

As mentioned in the link above, this is leading to excessive logging at
OVS,

2021-10-22T03:40:02.728Z|311606|coverage(revalidator631)|INFO|Skipping details of duplicate event coverage for hash=4a9bb48e
2021-10-22T03:43:50.650Z|123897195|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:51.017Z|123897196|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:51.843Z|123897197|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:52.208Z|123897198|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:52.487Z|123897199|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:52.856Z|123897200|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:54.179Z|123897201|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
2021-10-22T03:43:54.622Z|123897202|poll_loop|INFO|Dropped 17 log messages in last 4728 seconds (most recently, 4726 seconds ago) due to excessive rate


ovs-vsctl shows some 100+ ports with vlan tag 4095.

** Affects: neutron
     Importance: Undecided
         Status: New

** Description changed:

  Release version:
  Neutron: stable/Ussuri
  (Open vSwitch) 2.11.1
  
  
  on searching the issue i see this raised earlier on Mirantis Openstack,
  https://bugs.launchpad.net/mos/+bug/1711637
  
  As mentioned in the link above, this is leading to excessive logging at
  OVS,
  
- 
  2021-10-22T03:40:02.728Z|311606|coverage(revalidator631)|INFO|Skipping details of duplicate event coverage for hash=4a9bb48e
  2021-10-22T03:43:50.650Z|123897195|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:51.017Z|123897196|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:51.843Z|123897197|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:52.208Z|123897198|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:52.487Z|123897199|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:52.856Z|123897200|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:54.179Z|123897201|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:54.622Z|123897202|poll_loop|INFO|Dropped 17 log messages in last 4728 seconds (most recently, 4726 seconds ago) due to excessive rate
+ 
+ 
+ ovs-vsctl shows some 100+ ports with vlan tag 4095.

-- 
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https://bugs.launchpad.net/bugs/1948452

Title:
  qvo ports are not removed correctly when an instance is deleted
  immediately after creation

Status in neutron:
  New

Bug description:
  Release version:
  Neutron: stable/Ussuri
  (Open vSwitch) 2.11.1


  on searching the issue i see this raised earlier on Mirantis Openstack,
  https://bugs.launchpad.net/mos/+bug/1711637

  As mentioned in the link above, this is leading to excessive logging
  at OVS,

  2021-10-22T03:40:02.728Z|311606|coverage(revalidator631)|INFO|Skipping details of duplicate event coverage for hash=4a9bb48e
  2021-10-22T03:43:50.650Z|123897195|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:51.017Z|123897196|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:51.843Z|123897197|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:52.208Z|123897198|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:52.487Z|123897199|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:52.856Z|123897200|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:54.179Z|123897201|bridge|WARN|could not open network device qvoda000ab6-48 (No such device)
  2021-10-22T03:43:54.622Z|123897202|poll_loop|INFO|Dropped 17 log messages in last 4728 seconds (most recently, 4726 seconds ago) due to excessive rate


  ovs-vsctl shows some 100+ ports with vlan tag 4095.

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