On Fri, Mar 17, 2017 at 04:48:51PM +0100, Peter Krempa wrote:
> The log and lock protocol don't have an extra handshake to close the
> connection. Instead they just close the socket. Unfortunately that
> resulted into a lot of spurious garbage logged to the system log files:
>
> 2017-03-17 14:00:09.730+: 4714: error : virNetSocketReadWire:1800 : End
> of file while reading data: Input/output error
>
> or in the journal as:
>
> Mar 13 16:19:33 virtlogd[32360]: End of file while reading data:
> Input/output error
>
> Use the new facility in the netserverclient to suppress the IO error
> report from the virNetSocket layer.
> ---
> src/locking/lock_daemon.c | 3 +++
> src/logging/log_daemon.c | 3 +++
> 2 files changed, 6 insertions(+)
>
> diff --git a/src/locking/lock_daemon.c b/src/locking/lock_daemon.c
> index 1c94ddd05..12485e966 100644
> --- a/src/locking/lock_daemon.c
> +++ b/src/locking/lock_daemon.c
> @@ -712,6 +712,9 @@ virLockDaemonClientNew(virNetServerClientPtr client,
> }
> }
>
> +/* there's no closing handshake in the locking protocol */
> +virNetServerClientSetQuietEOF(client);
> +
> return priv;
>
> error:
> diff --git a/src/logging/log_daemon.c b/src/logging/log_daemon.c
> index 5997cce9d..d878efa63 100644
> --- a/src/logging/log_daemon.c
> +++ b/src/logging/log_daemon.c
> @@ -572,6 +572,9 @@ virLogDaemonClientNew(virNetServerClientPtr client,
> }
> }
>
> +/* there's no closing handshake in the logging protocol */
> +virNetServerClientSetQuietEOF(client);
> +
> return priv;
>
Ok, so you're setting this flag server side, and the virNetSocketRead
is triggered by virNetServerClientRead, in turn by n event handler
virNetServerClientDispatchRead. This method doesn't care about the
error message reported by virNetSocketRead at all - it simply marks
the client as needing closing.
So yeah, returning without setting an error is reasonable, though
I'd still prefer to have it return -2 rather than -1 for the case
where no error is reported.
Regards,
Daniel
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