[ovs-discuss] ovs 2.3 kernel module build failed on rhel 7.0 GA

[Flavio Leitner]

On Tue, Nov 04, 2014 at 09:28:16AM +0800, Gang U Xu wrote:
> Hi,
> 
> For why I have to build openvswitch-kmod, 
> I think it is from spec under rhel/openvswitch.spec
> ...
> Requires: openvswitch-kmod, logrotate, python

Oh, you can comment that out.  The rhel/openvswitch.spec
supposes that the module is provided by an extra package
which can be true in some cases.  I mean, old RHEL-6
versions didn't include that module, so you would have to
build kmod as well.  However, that's not true for RHEL-7 which
provides the module since 0day.


> ...
> I read spec from Fedora source rpm
> ftp://fr2.rpmfind.net/linux/fedora/linux/development/rawhide/source/SRPMS/o/openvswitch-2.3.0-2.fc22.src.rpm
> 
> ...
> Requires: openssl iproute module-init-tools
> Requires: kernel >= 3.15.0-0
> ...
> 
> Our product node did not have so high kernel. So we will use 
> openvswitch-kmod intead.

That's an upstream kernel version.  For RHEL-7 you can use:
Requires: kernel >= 0:3.10.0-123.2.1

You should be able to use openvswitch with any RHEL-7 kernel, but
versions prior to the above missed one bugfix, so I'd recommend
to use at least that version.

fbl

> Do you think it is reasonable?
> Any comments?




> From:   Flavio Leitner <fbl at redhat.com>
> To:     Gang U Xu/China/IBM at IBMCN
> Cc:     Alex Wang <alexw at nicira.com>, bugs at openvswitch.org
> Date:   2014/11/03 20:40
> Subject:        Re: [ovs-discuss] ovs 2.3 kernel module build failed on 
> rhel 7.0 GA
> 
> 
> 
> On Mon, Nov 03, 2014 at 04:29:20PM +0800, Gang U Xu wrote:
> > Hi,
> > 
> > I followed your way and can build kernal succ.
> > 
> > Seemed that important step is we need run boot.sh again.
> 
> Indeed, that's what I meant by bootstrap the tree again
> (./boot.sh).  The ./configure script creates a cache file
> so that in the next time you run, it doesn't need to go
> checking everything on the system again. 
> 
> However, in this case that patch changes the things checked
> by the script but it doesn't trigger any refresh.  So you
> need to do it by running ./boot.sh script.
> 
> > I found after run this step, all errors changed to warning so build 
> > passed.
> 
> Cool.
> [...]
> > Do you mean rhel 7.0 already provide ovs module?
> > I checked 7.0 yum repo from rhn, seemed no ovs found now.
> 
> The kernel module (the one you're building) is part of the
> standard RHEL kernel.
> 
> $ rpm -qpl kernel-3.10.0-123.2.1.el7.x86_64.rpm | grep openvswitch
> /lib/modules/3.10.0-123.2.1.el7.x86_64/kernel/net/openvswitch
> /lib/modules/3.10.0-123.2.1.el7.x86_64/kernel/net/openvswitch/openvswitch.ko
> 
> fbl
> 
>