[ovs-discuss] brcompatd: "could not find valid configuration to update" error

[Ben Pfaff]

You're right.

I pushed out a fix.

On Thu, Mar 25, 2010 at 02:51:44AM +0000, Lee, Jeongkeun wrote:
> Ben,
> 
> Thanks for the quick answers.
> I think INSTALL.bridge also needs to be fixed to use /usr/local.
> 
> thanks,
> JK
> 
> > -----Original Message-----
> > From: Ben Pfaff [mailto:blp at nicira.com]
> > Sent: Wednesday, March 24, 2010 2:44 PM
> > To: Lee, Jeongkeun
> > Cc: discuss at openvswitch.org
> > Subject: Re: [ovs-discuss] brcompatd: "could not find valid configuration
> > to update" error
> > 
> > On Wed, Mar 24, 2010 at 09:27:46PM +0000, Lee, Jeongkeun wrote:
> > > Today, I downloaded the latest snapshot from git and followed the
> > > instructions of INSTALL.bridge and INSTALL.Linux to use ovs as a
> > > replacement of Linux bridge.  OVS version is 0.99.2 and kernel is
> > > 2.6.26-2-amd64 on Debian lenny 5.03.
> > >
> > > Below are the commands that I ran after 'make install'
> > > completed. ovsdb-server, ovs-vswitchd, and ovs-brcompatd were called
> > > in separate shells to see the messages.
> > >
> > > % insmod datapath/linux-2.6/openvswitch_mod.ko
> > > % insmod datapath/linux-2.6/brcompat_mod.ko
> > > % ovsdb-tool create /etc/ovs-vswitchd.conf.db
> > vswitchd/vswitch.ovsschema
> > > % ovsdb-server /etc/ovs-vswitchd.conf.db --remote=punix:/var/run/ovsdb-
> > server
> > > % ovs-vswitchd -vANY:console:WARN unix:/var/run/ovsdb-server
> > > % ovs-brcompatd -vANY:console:WARN unix:/var/run/ovsdb-server
> > >
> > > ovsdb-server shows messages saying ovs-vswitchd and ovs-brcompatd are
> > connected
> > > and ovs-brcompatd complains
> > > 	database does not contain any Open vSwitch configuration
> > > when it gets started.
> > 
> > Thanks for reporting this problem.
> > 
> > You're right, there's a missing step here.  I'm going to add this
> > paragraph to INSTALL.Linux:
> > 
> >     Then initialize the database with "ovs-vsctl init".  This is only
> >     necessary the first time after you create the database with
> >     ovsdb-tool (but running it at any time is harmless):
> > 
> >           % ovs-vsctl init
> > 
> > after starting ovsdb-server and before starting ovs-vswitchd.
> > 
> > > Btw, ovs-vsctl connects to /usr/local/var/run/ovsdb-server by default
> > > instead of /var/run/ovsdb-server. Either ovs-vsctl or the INSTALL
> > > instruction needs to be revised to remove the discrepancy.
> > 
> > You are right again, of course.  The documentation is inconsistent here.
> > It assumes / in some places and /usr/local in others.  I will also push
> > out this fix:
> > 
> >     diff --git a/INSTALL.Linux b/INSTALL.Linux
> >     index 31bc3e0..263e261 100644
> >     --- a/INSTALL.Linux
> >     +++ b/INSTALL.Linux
> >     @@ -157,7 +157,7 @@ Prerequisites section, follow the procedure below
> > to build.
> > 
> >      7. Initialize the configuration database using ovsdb-tool, e.g.:
> > 
> >     -      % ovsdb-tool create /etc/ovs-vswitchd.conf.db
> > vswitchd/vswitch.ovsschema
> >     +      % ovsdb-tool create /usr/local/etc/ovs-vswitchd.conf.db
> > vswitchd/vswitch.ovsschema
> > 
> >      Startup
> >      =======
> >     @@ -167,7 +167,7 @@ configuration database, ovsdb-server.  Configure
> > it to use the
> >      database you created during step 7 of installation, above, and to
> >      listen on a Unix domain socket, e.g.:
> > 
> >     -      % ovsdb-server /etc/ovs-vswitchd.conf.db --
> > remote=punix:/var/run/ovsdb-server
> >     +      % ovsdb-server /usr/local/etc/ovs-vswitchd.conf.db --
> > remote=punix:/usr/local/var/run/ovsdb-server
> > 
> >      Then initialize the database with "ovs-vsctl init".  This is only
> >      necessary the first time after you create the database with
> >     @@ -178,7 +178,7 @@ ovsdb-tool (but running it at any time is
> > harmless):
> >      Then start the main Open vSwitch daemon, telling it to connect to
> > the
> >      same Unix domain socket:
> > 
> >     -      % ovs-vswitchd unix:/var/run/ovsdb-server
> >     +      % ovs-vswitchd unix:/usr/local/var/run/ovsdb-server
> > 
> >      Now you may use ovs-vsctl to set up bridges and other Open vSwitch
> >      features.  For example, to create a bridge named br0 and add ports
> > 
> > INSTALL.Linux does explain how to change the default:
> > 
> >    By default all files are installed under /usr/local.  If you want
> >    to install into, e.g., /usr and /var instead of /usr/local and
> >    /usr/local/var, add options as shown here:
> > 
> >       % ./configure --prefix=/usr --localstatedir=/var