[L2][scale issue] ovs-agent meets unexpected flow lost
Bug #1813714 reported by
LIU Yulong
This bug affects 2 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
neutron |
Fix Released
|
Undecided
|
LIU Yulong |
Bug Description
Ovs-agent will lost some flows during restart, for instance, flows to DHCP or L3, tunnel flows. These lost flows can sometimes cause VM failed to boot or dataplane down.
When subnets or security group ports quantity reaches 2000+, this issue can be seen in high probability.
This is a subproblem of bug #1813703, for more information, please see the summary:
https:/
summary: |
- [L2][scale issue] ovs-agent meet unexpected flow lost + [L2][scale issue] ovs-agent meets unexpected flow lost |
Changed in neutron: | |
assignee: | LIU Yulong (dragon889) → Brian Haley (brian-haley) |
Changed in neutron: | |
assignee: | Brian Haley (brian-haley) → LIU Yulong (dragon889) |
tags: | added: neutron-proactive-backport-potential |
tags: | removed: neutron-proactive-backport-potential |
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We have seen such scenarios happening at our customer environment as well.
Timing issues and instability of the ovs-agent is the cause of the issue.