[ovs-dev] [PATCH ovn] ovs: Bump submodule version to latest ovsdb-cs changes.

Ilya Maximets i.maximets at ovn.org
Thu Mar 11 22:58:54 UTC 2021

On 3/11/21 11:29 PM, Ben Pfaff wrote:
>>>>>> Few bugfixes was accepted recently to OVS for ovsdb-cs code
>>>>>> that are required for OVN build.
>>> I actually thought that the submodule was a recommended OVS version as
>>> well as what OVN builds against.  If that's not so, then yes we should
>>> clarify somehow.
>> It's a recommended OVS version to build with.  I'd not recommend using
>> it to actually build ovs-vswitchd or ovsdb-server, because it will
>> mean that you're running non-released version of OVS that is always
>> behind even the master branch.
> Hmm, OK.
> I would have guessed that for release branches we would point this to a
> release tag of OVS and that for the master branche we would point this
> to a commit in the master branch of OVS.

This might be a good approach, but there is one major issue:
OVN has 2x as many releases as OVS.  This means that every
second OVN release will have to point to some commit on OVS
master anyway if we want some new features there.

I'd say that eventually OVN should become less feature hungry
or less dependent from OVS changes.  Then we should consider
to use only stable released OVS as a build dependency and
actually wait for the next major OVS release if some new features
required from it.  But right now we can't afford that.

> I see that I didn't conceptualize this correctly.
>> Looking at the OVN documentation from this perspective I see that it
>> very loose in operation with word "use".  I think it should mean "build with",
>> but it's definitely not obvious.
>> I've sent a patch to clarify the documentation:
>> https://patchwork.ozlabs.org/project/ovn/patch/20210311203819.2526788-1-i.maximets@ovn.org/
> Thanks, I'll have a look.

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