Issue with igb and lagg (was Re: Problem with link aggregation + sshd)

[Jack Vogel]

On Wed, Sep 12, 2012 at 12:40 PM, Freddie Cash <fjwcash at gmail.com> wrote:

> On Wed, Sep 12, 2012 at 12:22 PM, Giulio Ferro <auryn at zirakzigil.org>
> wrote:
> > On 09/11/2012 11:34 PM, Freddie Cash wrote:
> >>
> >> On Sep 11, 2012 2:12 PM, "Giulio Ferro" <auryn at zirakzigil.org
> >> <mailto:auryn at zirakzigil.org>> wrote:
> >>  >
> >>  > Well, there definitely seems to be a problem with igb and lagg.
> >>  >
> >>  > igb alone works as it should, but doesn't seem to work properly in
> >> lagg.
> >>  >
> >>  > To be sure I started from scratch from a 9.0 release with nothing
> but:
> >>  >
> >>  > /etc/rc.conf
> >>  > ---------------------------------------------------
> >>  > ifconfig_igb0="inet ..."
> >>  >
> >>  > ifconfig_igb1="up"
> >>  > ifconfig_igb2="up"
> >>  > ifconfig_igb3="up"
> >>  >
> >>  > cloned_interfaces="lagg0"
> >>  > ifconfig_lagg0="laggproto lacp laggport igb1 laggport igb2 laggport
> >> igb3 192.168.x.x/24"
> >>  >
> >>  > sshd_enable="YES"
> >>  > ---------------------------------------------------
> >>  >
> >>  > This doesn't even manage to start sshd, it just hangs there at boot.
> >>  >
> >>  > Disabling lagg configuration everything works correctly.
> >>  >
> >>
> >> Just curious: does it work if you split the lagg configuration from the
> >> IP config:
> >>
> >> ifconfig_lagg0="laggproto ..."
> >> ifconfig_lagg0_alias0="inet 192..."
> >>
> >> I've had problems in the past with cloned interfaces not working right
> >> if you do everything in one ifconfig line. Never spent much time
> >> debugging it, though, as the split config always worked.
> >>
> >
> > Nope, doesn't work. It always hangs at boot and cannot be killed
> (freebsd 9
> > RELEASE)
> >
> > I still think the problem is with lagg and / or igb.
> > Someone should look into it.
>
> Thanks for checking.  I've used lagg(4) with igb, just not on 9.x.
>
> You're right, it seems to be pointing to the igb(4) driver in 9.x
> compared to < 9.0.
>
> How do you determine that since it doesn't happen without lagg?  I've no
reports
of igb hanging otherwise and its being used extensively.

Jack


> --
> Freddie Cash
> fjwcash at gmail.com
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