[ovs-dev] [PATCH v4] ovsdb replication: Provide option to configure probe interval.

Ben Pfaff blp at ovn.org
Mon Jan 6 22:41:34 UTC 2020


On Fri, Dec 20, 2019 at 06:43:52PM +0530, numans at ovn.org wrote:
> From: Numan Siddique <numans at ovn.org>
> 
> When ovsdb-server is in backup mode and connects to the active
> ovsdb-server for replication, and if takes more than 5 seconds to
> get the dump of the whole database, it will drop the connection
> soon after as the default probe interval is 5 seconds. This
> results in a snowball effect of reconnections to the active
> ovsdb-server.
> 
> This patch handles or mitigates this issue by setting the
> default probe interval value to 60 seconds and provide the option to
> configure this value from the unixctl command.
> 
> Other option could be increase the value of 'RECONNECT_DEFAULT_PROBE_INTERVAL'
> to a higher value.
> 
> Acked-by: Mark Michelson <mmichels at redhat.com>
> Signed-off-by: Numan Siddique <numans at ovn.org>
> Acked-by: Dumitru Ceara <dceara at redhat.com>

This patch really has two important effects.  One is making the interval
adjustable, the other is increasing the default.  I think that probably
both of these changes should get called out in NEWS.


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