[ovirt-users] How to add custom lines in to host interface?

[Antoni Segura Puimedon]

----- Original Message -----
> From: "Markus Stockhausen" <stockhausen at collogia.de>
> To: "Trey Dockendorf" <treydock at gmail.com>, "Arman Khalatyan" <arm2arm at gmail.com>
> Cc: "users" <users at ovirt.org>
> Sent: Sunday, October 19, 2014 9:05:33 PM
> Subject: Re: [ovirt-users] How to add custom lines in to host interface?
> 
> > Von: users-bounces at ovirt.org [users-bounces at ovirt.org]" im Auftrag von
> > "Trey Dockendorf [treydock at gmail.com]
> > Gesendet: Sonntag, 19. Oktober 2014 20:43
> > An: Arman Khalatyan
> > Cc: users
> > Betreff: Re: [ovirt-users] How to add custom lines in to host interface?
> > 
> > I'd be interested in this too.  I currently set CONNECTED_MODE
> > outside of ovirt using Puppet, and have no tried this with 3.5 as
> > yet to upgrade.  Having full 65K MTU is key on my IB fabric and
> >  using iSER benefits from maintaining that value.
> 
> IIRC vdsm controls all interfaces starting from 3.5 (unified persistence).

All the interfaces that were configured via the oVirt engine or vdsm (those will
have a '#generated by vdsm' kind of header. So writing to them is pointless
due to reboots.

> So a hook in /usr/libexec/vdsm/hooks/before_vdsm_start might be the
> best choice. An educated guess would be:

Yes, that's a good choice of hooking point. If you are configuring them with
oVirt, you could also make a after_network_setup hook that did as below.

> 
> #!/bin/sh
> echo connected > /sys/class/net/ib0/mode
> echo connected > /sys/class/net/ib1/mode
> 
> Markus
> 
> > - Trey
> > 
> > On Oct 19, 2014 10:11 AM, "Arman Khalatyan" <arm2arm at gmail.com> wrote:
> > 
> > 
> > Hi,
> > 
> > 
> > I need to add following line in the hosts ifcfg-ib0 interface:
> > 
> > ---------------------------------------
> > CONNECTED_MODE=yes
> > 
> > MTU=65520
> > 
> > IPV6INIT=no
> > 
> > ---------------------------------------
> > From the web Interface I can change only custom  MTU.
> > 
> > IB interface supports big MTUs only if it is in the "connected mode".
> > 
> > 
> > Are there way to set it during the deployment/upgrade process?
> > Thanks,
> > Arman.
> 
> 
> 
> 
> 
> 
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