On Tue, Oct 29, 2024 at 8:47 PM Qin, Qiaofeng via discuss <ovs-discuss@openvswitch.org> wrote: > > Hi, > > Recently, we encountered an issue when assigning some ACLs to two port > groups. When configuring the first ACL, everything looks correct. However, > after creating the second ACL and assigning it to the second port group, the > ACL does not appear in the Logical_Flow table, until we continue to perform > some other operations in the northbound or restart ovn-northd. I wonder if > this is a bug or a known limitation. > > We installed ovn-central 24.09.0 through apt in a Debian Sid host. The > following logs are the steps to reproduce the issue: > > > # Setup: 2 switches, 2 ports and 2 port groups > root@38469380e572:/# ovn-nbctl ls-add test1 > root@38469380e572:/# ovn-nbctl ls-add test2 > root@38469380e572:/# ovn-nbctl lsp-add test1 p1 > root@38469380e572:/# ovn-nbctl lsp-add test2 p2 > root@38469380e572:/# ovn-nbctl pg-add g1 > root@38469380e572:/# ovn-nbctl pg-add g2 p1 p2 > > # Assign acl1 first to g1, then to g2 > root@334a6440dc45:/# ovn-nbctl --name=rule1 acl-add g1 from-lport 100 "foo1" > drop > root@334a6440dc45:/# ovn-nbctl list acl rule1 | grep uuid > _uuid : fa7caa68-d4fa-4e69-8274-c5e5b57490aa > root@334a6440dc45:/# ovn-nbctl add port_group g2 acls > fa7caa68-d4fa-4e69-8274-c5e5b57490aa > > # Northbound results: Correct > root@334a6440dc45:/# ovn-nbctl acl-list g1 > from-lport 100 (foo1) drop log(name=rule1) > root@334a6440dc45:/# ovn-nbctl acl-list g2 > from-lport 100 (foo1) drop log(name=rule1) > > # Southbound results: Correct > root@334a6440dc45:/# ovn-sbctl dump-flows | grep foo > table=8 (ls_in_acl_eval ), priority=1100 , match=((foo1)), > action=(log(name="rule1", severity=info, verdict=drop); reg8[17] = 1; next;) > table=8 (ls_in_acl_eval ), priority=1100 , match=((foo1)), > action=(log(name="rule1", severity=info, verdict=drop); reg8[17] = 1; next;) > > # Assign acl2 first to g1, then to g2 > root@334a6440dc45:/# ovn-nbctl --name=rule2 acl-add g1 from-lport 100 "foo2" > drop > root@334a6440dc45:/# ovn-nbctl list acl rule2 | grep uuid > _uuid : 6b6080e5-1ecf-4d1d-bb86-8eb487c622c0 > root@334a6440dc45:/# ovn-nbctl add port_group g2 acls > 6b6080e5-1ecf-4d1d-bb86-8eb487c622c0 > > # Northbound results: Correct > root@334a6440dc45:/# ovn-nbctl acl-list g1 > from-lport 100 (foo1) drop log(name=rule1) > from-lport 100 (foo2) drop log(name=rule2) > root@334a6440dc45:/# ovn-nbctl acl-list g2 > from-lport 100 (foo1) drop log(name=rule1) > from-lport 100 (foo2) drop log(name=rule2) > > # Southbound results: Incorrect - Second ACL does not show > root@334a6440dc45:/# ovn-sbctl dump-flows | grep foo > table=8 (ls_in_acl_eval ), priority=1100 , match=((foo1)), > action=(log(name="rule1", severity=info, verdict=drop); reg8[17] = 1; next;) > table=8 (ls_in_acl_eval ), priority=1100 , match=((foo1)), > action=(log(name="rule1", severity=info, verdict=drop); reg8[17] = 1; next;) > > # Remove acl1 from g2 > root@334a6440dc45:/# ovn-nbctl acl-del g2 from-lport 100 "foo1" > > # Northbound results: Correct > root@334a6440dc45:/# ovn-nbctl acl-list g1 > from-lport 100 (foo1) drop log(name=rule1) > from-lport 100 (foo2) drop log(name=rule2) > root@334a6440dc45:/# ovn-nbctl acl-list g2 > from-lport 100 (foo2) drop log(name=rule2) > > # Southbound results: Incorrect - first ACL not removed > root@334a6440dc45:/# ovn-sbctl dump-flows | grep foo > table=8 (ls_in_acl_eval ), priority=1100 , match=((foo1)), > action=(log(name="rule1", severity=info, verdict=drop); reg8[17] = 1; next;) > table=8 (ls_in_acl_eval ), priority=1100 , match=((foo1)), > action=(log(name="rule1", severity=info, verdict=drop); reg8[17] = 1; next;) > > # Restart OVN can fix the inconsistency: acl1 removed, acl2 appears > root@334a6440dc45:/# ovn-ctl restart_northd > root@334a6440dc45:/# ovn-sbctl dump-flows | grep foo > table=8 (ls_in_acl_eval ), priority=1100 , match=((foo2)), > action=(log(name="rule2", severity=info, verdict=drop); reg8[17] = 1; next;) > table=8 (ls_in_acl_eval ), priority=1100 , match=((foo2)), > action=(log(name="rule2", severity=info, verdict=drop); reg8[17] = 1; next;) > > > When we assigned each ACL to only one port group, we did not observe the same > issue. When we assigned ACLs to (either one or more) logical switches instead > of port groups, this issue also did not happen.
Thanks for reporting the issue. Looks like a bug to me in ovn-northd. Can you please run the below command instead of restarting and see if it fixes the issue ? If so, it seems like an incremental processing bug in ovn-northd. ovn-appctl -t ovn-northd inc-engine/recompute Thanks Numan > > Thanks, > Qiaofeng > _______________________________________________ > discuss mailing list > disc...@openvswitch.org > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
