Hi Mark

Thanks for the review. Sorry, I completely lost track of this one.

On Thu, Jun 6, 2024 at 10:59 PM Mark Michelson <[email protected]> wrote:

> Hi Xavier,
>
> This is the only patch in the series for which I have a recommendation.
> The rest all look good to me.
>
> On 6/4/24 09:10, Xavier Simonart wrote:
> > In some rare cases, and despite "recent" changes to wait for cleanup
> > before replying to exit, ovn-controller was still running when trying
> > to restart it.
> >
> > Signed-off-by: Xavier Simonart <[email protected]>
> > ---
> >   tests/ovn-macros.at |  9 +++++++++
> >   tests/ovn.at        | 17 ++++++-----------
> >   2 files changed, 15 insertions(+), 11 deletions(-)
> >
> > diff --git a/tests/ovn-macros.at b/tests/ovn-macros.at
> > index 47ada5c70..71a46db8b 100644
> > --- a/tests/ovn-macros.at
> > +++ b/tests/ovn-macros.at
> > @@ -1107,6 +1107,15 @@
> m4_define([OVN_CHECK_SCAPY_EDNS_CLIENT_SUBNET_SUPPORT],
> >       AT_SKIP_IF([! echo "from scapy.layers.dns import
> EDNS0ClientSubnet" | python 2>&1 > /dev/null])
> >   ])
> >
> > +m4_define([OVN_CONTROLLER_EXIT_RESTART],
>
> I think this should just be called "OVN_CONTROLLER_RESTART". The goal is
> to restart ovn-controller, so I think the simpler name makes sense. It's
> true that we are using an "exit" command for ovn-appctl, but that is
> more of an implementation detail than anything else.
>
> I agree that the name is confusing, but I am not sure that
OVN_CONTROLLER_RESTART is better. The macro is executing
"ovn-appctl -t ovn-controller exit --restart" (i.e. exit the controller w/o
cleaning up databases) , and then wait for controller exit.
After the macro is executed, the controller is stopped (exited).
ovn-controller restart is executed later, with a different command.
OVN_CONTROLLER_RESTART would let me think that the macro is restarting
ovn-controller.
What about OVN_CONTROLLER_EXIT ?
WDYT?

> +  [TMPPID=$(cat $1/ovn-controller.pid)
> > +   AT_CHECK([as $1 ovn-appctl -t ovn-controller exit --restart])
> > +   # Make sure ovn-controller stopped so that a future restart will not
> fail.
> > +   # Checking debug/status is running is not enough as there might be a
> small race condition.
> > +   echo "Waiting for pid $TMPPID"
> > +   OVS_WAIT_WHILE([kill -0 $TMPPID 2>/dev/null])
> > +])
> > +
> >   m4_define([OFTABLE_PHY_TO_LOG], [0])
> >   m4_define([OFTABLE_LOG_INGRESS_PIPELINE], [8])
> >   m4_define([OFTABLE_OUTPUT_LARGE_PKT_DETECT], [37])
> > diff --git a/tests/ovn.at b/tests/ovn.at
> > index 2dd0dfd2e..8fa26c192 100644
> > --- a/tests/ovn.at
> > +++ b/tests/ovn.at
> > @@ -20615,7 +20615,7 @@ echo $expected | ovstest test-ovn
> expr-to-packets > expected
> >   OVN_CHECK_PACKETS([hv2/vif1-tx.pcap], [expected])
> >
> >   # Stop ovn-controller on hv2 with --restart flag
> > -as hv2 ovs-appctl -t ovn-controller exit --restart
> > +OVN_CONTROLLER_EXIT_RESTART([hv2])
> >
> >   # Now send the packet again. This time, it should still arrive
> >   OVS_WAIT_UNTIL([as hv1 ovs-appctl -t ovn-controller inject-pkt
> "$packet"])
> > @@ -29316,7 +29316,7 @@ check test "$hvt2" -gt 0
> >   # Kill ovn-controller on chassis hv3, so that it won't update nb_cfg.
> >   # Then wait for 9 out of 10
> >   sleep 1
> > -check as hv3 ovn-appctl -t ovn-controller exit --restart
> > +OVN_CONTROLLER_EXIT_RESTART([hv3])
> >   wait_for_ports_up
> >   ovn-nbctl --wait=sb sync
> >   wait_row_count Chassis_Private 9 name!=hv3 nb_cfg=2
> > @@ -36252,7 +36252,7 @@ check_tunnel_port hv1 br-int [email protected]
> %192.168.0.1
> >   check_tunnel_port hv2 br-int [email protected]%192.168.0.2
> >
> >   # Stop ovn-controller on hv1
> > -check as hv1 ovn-appctl -t ovn-controller exit --restart
> > +OVN_CONTROLLER_EXIT_RESTART([hv1])
> >
> >   # The tunnel should remain intact
> >   check_tunnel_port hv1 br-int [email protected]%192.168.0.1
> > @@ -36281,7 +36281,7 @@ check_tunnel_port hv2 br-int1 [email protected]
> %192.168.0.2
> >   check grep -q "Clearing old tunnel port \"ovn-hv1-0\" 
> > ([email protected]%192.168.0.2)
> from bridge \"br-int\"" hv2/ovn-controller.log
> >
> >   # Stop ovn-controller on hv1
> > -check as hv1 ovn-appctl -t ovn-controller exit --restart
> > +OVN_CONTROLLER_EXIT_RESTART([hv1])
> >
> >   # The tunnel should remain intact
> >   check_tunnel_port hv1 br-int1 [email protected]%192.168.0.1
> > @@ -36371,10 +36371,7 @@ prev_id2=$(ovs-vsctl --bare --columns _uuid
> find port external_ids:ovn-chassis-i
> >   # The hv2 is running we can remove the override file
> >   rm -f ${OVN_SYSCONFDIR}/system-id-override
> >
> > -check ovn-appctl -t ovn-controller exit --restart
> > -
> > -# Make sure ovn-controller stopped before restarting it
> > -OVS_WAIT_UNTIL([test x$(ovn-appctl -t ovn-controller debug/status) !=
> "xrunning"])
> > +OVN_CONTROLLER_EXIT_RESTART([hv1])
> >
> >   # for some reason SSL ovsdb configuration overrides CLI, so
> >   # delete ssl config from ovsdb to give CLI arguments priority
> > @@ -37086,9 +37083,7 @@ AT_CHECK([grep -c "NXT_CT_FLUSH_ZONE"
> hv1/ovs-vswitchd.log], [0], [dnl
> >   ])
> >
> >   AS_BOX([Check conversion from UUID - restart])
> > -ovn-appctl -t ovn-controller exit --restart
> > -# Make sure ovn-controller stopped before restarting it
> > -OVS_WAIT_UNTIL([test "$(ovn-appctl -t ovn-controller debug/status)" !=
> "running"])
> > +OVN_CONTROLLER_EXIT_RESTART([hv1])
> >
> >   replace_with_uuid lr0
> >   replace_with_uuid sw0
>
> Thanks
Xavier
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