Watchdog timeout em driver 8.2-R

[Lars Wilke]

Hi Jack,

thanks for your response.

* Jack Vogel wrote:
>  On Wed, Apr 18, 2012 at 7:01 AM, Lars Wilke <lw at lwilke.de> wrote:
> >   Apr 13 08:53:07 san02 kernel: em1: Watchdog timeout -- resetting
> >   Apr 13 08:53:07 san02 kernel: em1: Queue(0) tdh = 232, hw tdt = 190
> >   Apr 13 08:53:07 san02 kernel: em1: TX(0) desc avail = 31,Next TX to
> >   Clean = 221
> >   Apr 13 08:53:07 san02 kernel: em1: Link is Down
> >   Apr 13 08:53:07 san02 kernel: em1: link state changed to DOWN
> >
> > Sometimes nothing for days, sometimes under high Network load (NFSv3),
> > sometimes
> > multiple times a day. I see this message/behaviour on always the same two
> > of the
> > four interfaces (em1 and em3).
> >
> > Then the NIC does not have the ACTIVE flag anymore, an ifconfig em1 up
> > solves the issue. But why does it loose the ACTIVE state and why does the
> > NIC reset itself in the first place?
> >
>
>  Because a watchdog reset is just that, a reset, so it causes the hardware to
>  reinitialize. It should come back up, I do not know why it did not, maybe
>  the renegotiation with the switch fails for some reason?

Hm, my main problem is that it did a reset in the first place.

>  One thought is to get the latest em driver and see if the behavior changes,
>  if that driver is the distributed 8.2 its pretty old.

ok then i guess i will upgrade to 8.3-R, is the driver there reasonably new?

   --lars