[ovs-discuss] duplicate port names in DB

Gregor Schaffrath grsch at net.t-labs.tu-berlin.de
Tue May 3 12:37:53 UTC 2011

Hi again.

I found out that the duplicate entries do not stem from a MAC address issue, but from the fact that I use the std. debian /etc/network/interfaces file to set up my bridges... 
It seems that the bridges are not eliminated from the DB upon shutdown, but the ports are added to the DB once more when the network script adds them to supposedly freshly created bridges.
(mind that brctl still reports a correct setup, but the DB now contains duplicate Port entries)
Is this behaviour intended? Is it a known bug?

Nonetheless, my question remains whether one can find out which entry is the correct one in the case of duplicate entries.


On Tue, May 03, 2011 at 11:07:24AM +0200, Gregor Schaffrath wrote:
> Hi all.
> Is there documentation on the database available?
> I've got a problem with redundant entries in my ovsdb... Is there a way to find out which entry is the right one? 
> root at snexp:~# ovs-vsctl list-ifaces xenbr2
> May 03 09:51:23|00002|vsctl|WARN|eth1: database contains duplicate port name
> May 03 09:51:23|00003|vsctl|WARN|eth1: database contains duplicate port name
> May 03 09:51:23|00004|vsctl|WARN|eth1: database contains duplicate port name
> May 03 09:51:23|00005|vsctl|WARN|eth1: database contains duplicate port name
> May 03 09:51:23|00006|vsctl|WARN|eth0: database contains duplicate port name
> May 03 09:51:23|00007|vsctl|WARN|eth2: database contains duplicate port name
> eth0
> eth2
> NB: I've got a bit of a weird setup (Xen-Dom0 virtualized on KVM machine - running linux- and openvswitch-1.1.0pre2), which might be responsible for this issue... could it be that a mac address change (which might happen upon reboot) triggers insertion of a 'new' interface into the DB?
> Best regards,
> 	Gregor.
> P.S.: Another question would be whether use of the ovsdb is compulsory in post-1.0.0 versions of openvswitch, or whether there's a way to keep using the configuration file used for 0.9x-versions.
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