[ovs-dev] [PATCH] ovn-controller: Fix the chassis row recreation issue

[nusiddiq at redhat.com]

From: Numan Siddique <nusiddiq at redhat.com>

Before the commit [1], ovn-controller would always recreate its
chassis row if deleted externally. After this commit, it no longer
recreates it. This is regression and needs to be fixed.

[1] - 242f1799fc22("ovn-controller: Refactor chassis.c to abstract the string parsing")

Fixes: 242f1799fc22("ovn-controller: Refactor chassis.c to abstract the string parsing")
CC: Dumitru Ceara <dceara at redhat.com>
Signed-off-by: Numan Siddique <nusiddiq at redhat.com>
---
 ovn/controller/chassis.c |  4 ++++
 tests/ovn-controller.at  | 29 +++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/ovn/controller/chassis.c b/ovn/controller/chassis.c
index 04b98d86c..b74a42cc8 100644
--- a/ovn/controller/chassis.c
+++ b/ovn/controller/chassis.c
@@ -486,6 +486,10 @@ chassis_get_record(struct ovsdb_idl_txn *ovnsb_idl_txn,
         if (!chassis_rec) {
             VLOG_WARN("Could not find Chassis : stored (%s) ovs (%s)",
                       chassis_info_id(&chassis_state), chassis_id);
+            if (ovnsb_idl_txn) {
+                /* Recreate the chassis record.  */
+                chassis_rec = sbrec_chassis_insert(ovnsb_idl_txn);
+            }
         }
     } else {
         chassis_rec =
diff --git a/tests/ovn-controller.at b/tests/ovn-controller.at
index 343c2abed..63b2581c0 100644
--- a/tests/ovn-controller.at
+++ b/tests/ovn-controller.at
@@ -292,3 +292,32 @@ as ovn-sb
 OVS_APP_EXIT_AND_WAIT([ovsdb-server])
 
 AT_CLEANUP
+
+# Checks that ovn-controller recreates its chassis record when deleted externally.
+AT_SETUP([ovn-controller - Chassis self record])
+AT_KEYWORDS([ovn])
+ovn_init_db ovn-sb
+
+net_add n1
+sim_add hv
+as hv
+ovs-vsctl \
+    -- add-br br-phys \
+    -- add-br br-eth0 \
+    -- add-br br-eth1 \
+    -- add-br br-eth2
+ovn_attach n1 br-phys 192.168.0.1
+
+OVS_WAIT_UNTIL([test xhv = x`ovn-sbctl --columns name --bare find chassis`])
+# Delete the chassis "hv"
+ovn-sbctl chassis-del hv
+# ovn-controller should recreate its chassis row.
+OVS_WAIT_UNTIL([test xhv = x`ovn-sbctl --columns name --bare find chassis`])
+
+# Gracefully terminate daemons
+OVN_CLEANUP_SBOX([hv])
+OVN_CLEANUP_VSWITCH([main])
+as ovn-sb
+OVS_APP_EXIT_AND_WAIT([ovsdb-server])
+
+AT_CLEANUP
-- 
2.21.0