[ovs-discuss] Openvswitch configuration persistence

[Alexandru Coseru]

Hello,

 

Can you give some more details please ?

 

 

Best Regards,

 

From: Reid Price [mailto:rprice at nicira.com] 
Sent: Thursday, September 19, 2013 11:51 PM
To: Faisal Ali
Cc: Alexandru Coseru; discuss at openvswitch.org
Subject: Re: [ovs-discuss] Openvswitch configuration persistence

 

Hi guys [+list],

 

You might find that you have unexpected behavior down the road with that
tactic.

I would perhaps suggest an approach where you set a value (using xapi) for
the

PIF's other-config, and then run your own script (perhaps on bootup) that
finds

PIF and does configuration based upon that field.

 

Otherwise you are likely to cause Xenserver to freak out at some point, or
to

have stale network configuration floating around.

 

  -Reid

 

On Thu, Sep 19, 2013 at 10:46 AM, Faisal Ali <justhugoo at gmail.com> wrote:

Yes, I found that on Xenserver 6.2 the openvswitch startup script resets the
ovs configuration. With my limited knowledge of scripting I managed to find
a particular lines and comment them out. That stopped Xen from wiping out
the ovs configs

 

Here the lines

 

  if test ! -e /var/run/openvswitch.booted; then

        touch /var/run/openvswitch.booted

        set "$@" --delete-bridges

    fi

 

 

From: Alexandru Coseru <alex.coseru at simplus.ro>
Date: Mon, 16 Sep 2013 13:28:03 +0300
To: Faisal Ali <justhugoo at gmail.com>, <rprice at nicira.com>
Subject: Re: [ovs-discuss] Openvswitch configuration persistence

 

 
 
Hello guys,
 
 
 
Did somebody found a solution for the problem below?
 
We want to use openvswitch to a configure a host with 2 nic with STP ON (for
switch redundacy).
 
Best Regards,
         Alex
 
 
 
 
Thanks for the clarification Reid
 
On Aug 26, 2013, at 12:20 PM, Reid Price <rpr... at nicira.com> wrote:
 
 
 
> OVS by itself saves configuration through boots, etc., ovsdb is
transactional 
> (usually stored in /etc/openvswitch/conf.db). Xen removes that config on
boot 
> up.
> 
> On Aug 26, 2013, at 7:51 AM, Faisal Ali <justhu... at gmail.com> wrote:
> 
>> Thank you Reid, so just so Iam clear, is it because ovs is not meant to
save 
>> the config?  The reason I ask is I read it in a blog that it does save
it.
 
 
>> 
>> On Aug 26, 2013, at 3:40 AM, Reid Price <rpr... at nicira.com> wrote:
>> 
>>> Hi Faisal,
>>> 
>>> Xen only persists its own OVS information, and recreates it from scratch

>>> (xapi information) at boot.
>>> 
>>> -Reid
>>> 
>>> On Aug 25, 2013, at 5:41 PM, Faisal Ali <justhu... at gmail.com> wrote:
>>> 
>>>> Hi,
>>>> 
>>>> I am using xenserver 6.2 which has openvswitch version 1.4.6 running.
>>>> 
>>>> When I configure ovs using ovs commands it does not save the
configuration 
>>>> and its lost after reboot. 
>>>> 
>>>> I am not sure if this how ovs works or Xen has a modified
implementation 
 
 
>>>> of ovs that does not allow to permanently save the configuration.
>>>> 
>>>> Please let me know what is the correct way if any or my assumptions are

 
 
>>>> incorrect
>>>> 
>>>> Thank you
>>>> 
>>>> Faisal Ali
>>>> _______________________________________________
>>>> discuss mailing list
>>>> discuss at openvswitch.org
>>>>  <http://openvswitch.org/mailman/listinfo/discuss>
http://openvswitch.org/mailman/listinfo/discuss
_______________________________________________
 
 
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http://openvswitch.org/mailman/listinfo/discuss

 

 

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