Public bug reported:
The "old" parameter passed to the handle_ha_chassis_group_changes()
method is a delta object and sometimes it does not contain the
"external_ids" column (because it hasn't changed).
The absence of the "external_ids" column lead to the method into believe
that the "old" object was no longer a gateway chassis (because since the
external_ids column wasn't present, the code from is_gateway_chassis()
returned False) and that triggered some changes in the default HA group
which the external ports lives.
The combination of the agents health check (that triggers updates to the
chassis) plus this problem with the absence of the "external_ids" column
in the old object for certain updates is resulting in the SRIOV
(external in OVN) ports to flap between the gateway chassis.
** Affects: neutron
Importance: High
Assignee: Lucas Alvares Gomes (lucasagomes)
Status: In Progress
** Tags: ovn
** Tags added: ovn
** Changed in: neutron
Status: New => Confirmed
** Changed in: neutron
Importance: Undecided => High
** Changed in: neutron
Assignee: (unassigned) => Lucas Alvares Gomes (lucasagomes)
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https://bugs.launchpad.net/bugs/1869389
Title:
[OVN] SRIOV (external) ports flapping
Status in neutron:
In Progress
Bug description:
The "old" parameter passed to the handle_ha_chassis_group_changes()
method is a delta object and sometimes it does not contain the
"external_ids" column (because it hasn't changed).
The absence of the "external_ids" column lead to the method into
believe that the "old" object was no longer a gateway chassis (because
since the external_ids column wasn't present, the code from
is_gateway_chassis() returned False) and that triggered some changes
in the default HA group which the external ports lives.
The combination of the agents health check (that triggers updates to
the chassis) plus this problem with the absence of the "external_ids"
column in the old object for certain updates is resulting in the SRIOV
(external in OVN) ports to flap between the gateway chassis.
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https://bugs.launchpad.net/neutron/+bug/1869389/+subscriptions
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