[Bug 917309] Re: brcompatd works with brctl delif but doesn't with addif

2012-07-10 Thread Chuck Short
This should be fixed in precise, according to the comments in the bug
report.

Regards
chuck

** Changed in: openvswitch (Ubuntu)
   Status: New => Fix Released

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Title:
  brcompatd works with brctl delif but doesn't with addif

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[Bug 917309] Re: brcompatd works with brctl delif but doesn't with addif

2012-01-17 Thread Ben Pfaff
I pushed the fix to master and the branches for 1.2, 1.3, 1.4, and 1.5.

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  brcompatd works with brctl delif but doesn't with addif

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[Bug 917309] Re: brcompatd works with brctl delif but doesn't with addif

2012-01-17 Thread Ben Pfaff
I posted a fix to ovs-dev for review:
http://openvswitch.org/pipermail/dev/2012-January/014352.html

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  brcompatd works with brctl delif but doesn't with addif

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[Bug 917309] Re: brcompatd works with brctl delif but doesn't with addif

2012-01-17 Thread Ben Pfaff
>I don't want brcompat to control the bridge module. I want brcompat to
make it possible to REPLACE the bridge kernel module with an OvS switch.

OK.  That's the purpose of brcompat.  Thank you for the report.

I'll see what I can do about fixing this upstream.

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  brcompatd works with brctl delif but doesn't with addif

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[Bug 917309] Re: brcompatd works with brctl delif but doesn't with addif

2012-01-17 Thread Dave Walker
** Changed in: openvswitch (Ubuntu)
   Importance: Undecided => Medium

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  brcompatd works with brctl delif but doesn't with addif

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[Bug 917309] Re: brcompatd works with brctl delif but doesn't with addif

2012-01-17 Thread Rogério Vinhal Nunes
I don't want brcompat to control the bridge module. I want brcompat to
make it possible to REPLACE the bridge kernel module with an OvS switch.

Maybe I wasnt very clear on my environment. I have a host machine
running the Xen Hypervisor. Xen Hypervisor works with bridged networking
by setting a bridge named xenbr0 with the network interface IP and
connecting it to the IP-less network interface. This way, every VM
started becomes connected to the xenbr0 bridge along with the physical
interface as gateway. I want to make this xenbr0 bridge an OvS switch.

That's why I must have a /etc/network/interfaces entry for the xenbr0
bridge, to configure its IP accordingly.

I tried blacklisting the bridge module in
/etc/modprobe.d/blacklist.conf, but after restarting the bridge module
is still raising.

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  brcompatd works with brctl delif but doesn't with addif

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[Bug 917309] Re: brcompatd works with brctl delif but doesn't with addif

2012-01-16 Thread Ben Pfaff
>Examining the openvswitch opening script I find that it only tries to remove 
>the module if there are no bridges up.
...to prevent the script from destroying all of your bridges, if you have some 
configured.

>But what good is brcompatd if there are no bridges up?
I think you misunderstand the purpose of brcompatd.  It is to allow commands 
such as "brctl addbr" to control Open vSwitch instead of the Linux bridge 
module.  It is not to allow Open vSwitch to control the Linux bridge module.

>Even if there are no bridges up and you fire up a bridge manually, but it 
>doesn't work due to the bridge module starting by itself?
I don't understand that question/statement.

>Not being able to remove the bridge module should also be an error that 
>prevents the brcompatd service from starting as it will do no good to be 
>started in this way.
That's reasonable, and easy to change.  I'll send a patch to ovs-dev.

>Is there any way to prevent the bridge module from reappearing?
I think that modprobe has a "blacklist" feature.

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  brcompatd works with brctl delif but doesn't with addif

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[Bug 917309] Re: brcompatd works with brctl delif but doesn't with addif

2012-01-16 Thread Rogério Vinhal Nunes
Yes, I manually enabled it in /etc/default/openvswitch.

I used to make brcompatd work in 10.04 with a compiled version by doing
a rmmod in bridge, loading brcompat and then restarting the network so
that the bridge that was removed due to rmmod would reappear. But in
11.10 when I do rmmod the bridge disappears as expected but when I
reload the bridge by restarting the network or by manually doing a brctl
addbr, the bridge module automatically reappears.

Examining the openvswitch opening script I find that it only tries to
remove the module if there are no bridges up. But what good is brcompatd
if there are no bridges up? Even if there are no bridges up and you fire
up a bridge manually, but it doesn't work due to the bridge module
starting by itself? Not being able to remove the bridge module should
also be an error that prevents the brcompatd service from starting as it
will do no good to be started in this way.

Is there any way to prevent the bridge module from reappearing?

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  brcompatd works with brctl delif but doesn't with addif

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[Bug 917309] Re: brcompatd works with brctl delif but doesn't with addif

2012-01-16 Thread Ben Pfaff
> When I start the openvswitch initscript it doesn't remove the bridge module, 
> but loads the brcompat module.
brcompatd should not be enabled by default.  Does this mean that you 
specifically enabled ovs-brcompatd, by installing the openvswitch-brcompat 
package and editing /etc/default/openvswitch?

I'm not surprised that loading both the brcompat module and the actual
bridge module causes problems.  They are not meant to be loaded
together.  I do see, however, that nothing prevents both from being
loaded at the same time.  This is probably what needs to be fixed.

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  brcompatd works with brctl delif but doesn't with addif

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