[ovs-discuss] "ovs-vsctl get openvswitch . other_config" results in "WARN connection dropped"

[Tobias Hofmann (tohofman)]

I just see the warning, however on our system we periodically run “ovs-vsctl get openvswitch . other_config” which bloats the log file over time. I’d like to prevent that.

From: Ben Pfaff <blp at ovn.org>
Date: Monday, 1. February 2021 at 22:09
To: Tobias Hofmann (tohofman) <tohofman at cisco.com>
Cc: ovs-discuss at openvswitch.org <ovs-discuss at openvswitch.org>
Subject: Re: [ovs-discuss] "ovs-vsctl get openvswitch . other_config" results in "WARN connection dropped"
On Mon, Feb 01, 2021 at 01:41:05PM +0000, Tobias Hofmann (tohofman) via discuss wrote:
> Hello everybody,
>
> I have Open vSwitch 2.11.1 installed with DPDK 18.11.0 and DB Schema 7.16.1.
> Every time I execute: “ovs-vsctl get open_vswitch . other_config”. I get the following WARN message in ovsdb-server.log:
> 2021-02-01T13:31:21.773Z|07709|jsonrpc|WARN|unix#7443: receive error: Connection reset by peer
> 2021-02-01T13:31:21.774Z|07710|reconnect|WARN|unix#7443: connection dropped (Connection reset by peer)
>
> When running: ”ovs-vsctl show” I don’t see any of these WARN logs.
> Interestingly, when running: “ovs-vsctl -vjsonrpc get open_vswitch . other_config”. I also DO NOT see any WARN log messages.
>
> Does anyone have an idea what causes this issue and how to fix it?

Do you see some actual issue, or just a warning message in the log?  The
most probable reason for the message is that ovsdb-server has some RPC
message queued up to send ovs-vsctl, but ovs-vsctl is done and exits
without reading it.  Probably, adding -vjsonrpc slows ovs-vsctl down
enough that it reads that RPC, suppressing the log.
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