[ovs-dev] [PATCH] rconn: Suppress 'connected' log for unreliable connections.

[Ilya Maximets]

Recent assertion failure fix changed rconn workflow for unreliable
connections (such as connections from ovs-ofctl) from

    |rconn|DBG|br-int<->unix#151: entering ACTIVE
    |rconn|DBG|br-int<->unix#151: connection closed by peer
    |rconn|DBG|br-int<->unix#151: entering DISCONNECTED

To

    |rconn|DBG|br-int<->unix#200: entering CONNECTING
    |rconn|INFO|br-int<->unix#200: connected
    |rconn|DBG|br-int<->unix#200: entering ACTIVE
    |rconn|DBG|br-int<->unix#200: connection closed by peer
    |rconn|DBG|br-int<->unix#200: entering DISCONNECTED

Many monitoring/configuring tools (ex. ovs-neutron-agent) uses
ovs-ofctl frequently to check the statuses of installed flows.
This produces a lot of "connected" logs, that are useless in general.

Fix that by changing the log level to DBG for unreliable connections.

Suggested-by: Ben Pfaff <blp at ovn.org>
Fixes: c9a9b9b00bf5 ("rconn: Introduce new invariant to fix assertion
                      failure in corner case.")
Signed-off-by: Ilya Maximets <i.maximets at samsung.com>
---
 lib/rconn.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/rconn.c b/lib/rconn.c
index 7af4e73..ece8769 100644
--- a/lib/rconn.c
+++ b/lib/rconn.c
@@ -511,7 +511,7 @@ run_CONNECTING(struct rconn *rc)
 {
     int retval = vconn_connect(rc->vconn);
     if (!retval) {
-        VLOG_INFO("%s: connected", rc->name);
+        VLOG(rc->reliable ? VLL_INFO : VLL_DBG, "%s: connected", rc->name);
         rc->n_successful_connections++;
         state_transition(rc, S_ACTIVE);
         rc->version = vconn_get_version(rc->vconn);
-- 
2.7.4