Infiniband should not be bridged.
Ovirt tries to build a bridge over a NIC if the network is a VM one. Please
verify that it isn't.

On Mon, Jul 4, 2016 at 5:10 PM, Giorgio Biacchi <gior...@di.unimi.it> wrote:

> As I said, Infiniband is not ethernet so it cannot be L2 bridged. This is
> normal
> and I understand why it can't be done. I'd like to know if there's a way to
> configure host networking for infiniband link without bridging because is
> not
> necessary to have a bridge there. In addition to this, 3.6 behavior was
> different. Here's all the relevant configuration files generated by 3.6
> and 4.0:
>
> ------------- 3.6 ---------------
>
> [root@node3.6]# cat /etc/sysconfig/network-scripts/ifcfg-ib0
> # Generated by VDSM version 4.17.11-7.gitc0752ac.el7
> DEVICE=ib0
> HWADDR=80:00:00:48:fe:80:00:00:00:00:00:00:00:02:c9:03:00:0a:06:9f
> ONBOOT=yes
> BOOTPROTO=dhcp
> MTU=65520
> DEFROUTE=no
> NM_CONTROLLED=no
> IPV6INIT=no
>
> [root@node3.6]# cat /var/lib/vdsm/persistence/netconf/nets/ibstorage
> {
>     "nic": "ib0",
>     "bootproto": "dhcp",
>     "blockingdhcp": true,
>     "bridged": "false",
>     "mtu": "65520"
> }
>
> ---------------------------------
>
> ------------- 4.0 ---------------
>
> [root@node4.0]# cat /etc/sysconfig/network-scripts/ifcfg-ib0
> # Generated by VDSM version 4.18.5.1-1.el7.centos
> DEVICE=ib0
> BRIDGE=ibstorage
> ONBOOT=yes
> MTU=65520
> NM_CONTROLLED=no
> IPV6INIT=no
>
> [root@node4.0]# cat /var/lib/vdsm/persistence/netconf/nets/ibstorage
> {
>     "ipv6autoconf": false,
>     "nic": "ib0",
>     "mtu": 65520,
>     "switch": "legacy",
>     "dhcpv6": false,
>     "stp": false,
>     "bridged": true,
>     "defaultRoute": false
> }
>
> [root@node4.0]# cat /var/lib/vdsm/persistence/netconf/nets/ib0
> {
>     "ipv6autoconf": false,
>     "nic": "ib0",
>     "mtu": 65520,
>     "switch": "legacy",
>     "dhcpv6": false,
>     "stp": false,
>     "bridged": true,
>     "defaultRoute": false
> }
>
> [root@node4.0]# cat /etc/sysconfig/network-scripts/ifcfg-ibstorage
> # Generated by VDSM version 4.18.5.1-1.el7.centos
> DEVICE=ibstorage
> TYPE=Bridge
> DELAY=0
> STP=off
> ONBOOT=yes
> DEFROUTE=no
> NM_CONTROLLED=no
> IPV6INIT=no
> MTU=65520
>
> ---------------------------------
>
> So it seems that 4.0 generates more files and wants to bridge an ethernet
> unbridgeable link. Steps to attempt to configure the connection for 4.0
> was the
> same done successfully for 3.6.
>
> Thanks again
>
> On 07/04/2016 03:25 PM, Arman Khalatyan wrote:
> > As I remember the IBoIP is not fully implemented Ethernet protocol, it
> does not
> > support bridging.
> >
> >
> > ***********************************************************
> >
> >  Dr. Arman Khalatyan  eScience -SuperComputing
> >  Leibniz-Institut für Astrophysik Potsdam (AIP)
> >  An der Sternwarte 16, 14482 Potsdam, Germany
> >
> > ***********************************************************
> >
> > On Mon, Jul 4, 2016 at 2:58 PM, Yevgeny Zaspitsky <yzasp...@redhat.com
> > <mailto:yzasp...@redhat.com>> wrote:
> >
> >     Hello,
> >
> >     What's "couple of vdsm hooks"? Could you provide the source code of
> those?
> >
> >     Regards,
> >     Yevgeny
> >
> >     On Mon, Jul 4, 2016 at 1:43 PM, Giorgio Biacchi <gior...@di.unimi.it
> >     <mailto:gior...@di.unimi.it>> wrote:
> >
> >         Hi list,
> >         I'm trying a test installation of the new Ovirt Node Image and
> engine before
> >         upgrading my 3.6 installation.
> >
> >         In my current environment every hypervisor access the NFS shared
> data
> >         domain via
> >         infiniband. With a couple of vdsm hooks I was able to set the
> infiniband
> >         link in
> >         connected mode and set a MTU of 65520. In my case the infiniband
> link is
> >         used as
> >         a common NIC, I don't use RDMA, only IP over infiniband to
> access the
> >         data domain.
> >
> >         Now, when I attempt to setup host networking, the system try to
> bridge the
> >         connection "ibstorage" (defined in networks tab) with ib0
> device. But a non
> >         ethernet device cannot be bridged that way and host networking
> setup fails.
> >
> >         Any idea or suggestion? With 3.6 (node and engine) all was fine.
> >
> >         Thanks
> >         --
> >         gb
> >
> >         PGP Key: http://pgp.mit.edu/
> >         Primary key fingerprint: C510 0765 943E EBED A4F2 69D3 16CC DC90
> B9CB 0F34
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> >
> >
> >
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> >
> >
>
> --
> gb
>
> PGP Key: http://pgp.mit.edu/
> Primary key fingerprint: C510 0765 943E EBED A4F2 69D3 16CC DC90 B9CB 0F34
>
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