[BALU] NIC Card or OS issue?

Nick Hudson nick.hudson at gmail.com
Fri Nov 16 11:12:52 CST 2007

On Nov 16, 2007 10:46 AM, Kris Kirby <kris at catonic.us> wrote:
> On Fri, 16 Nov 2007, Nick Hudson wrote:
> > drops.  This is resolved by plugging in a keyboard and restarting the
> > network (/etc/init.d/networking restart).  I looked in
> > /var/log/messages and it gives me nothing but the port is "down".  So
> > I figured it was a bad NIC card.  Replaced the NIC card and it's still
> > happening.  Same non error message is given in the messages file,
> > nothing in dmesg either other than its down.  So this leads me to
> > believe it's a OS issue of some sort.  Anyone have any thoughts or
> > ideas.
> It's either OS, cable/wire, or the ethernet switch at the far end.
> CCHHEECCKK YYOOUURR DDUUPPLLEEXX. Otherwise, what I've done to solve
> this problem is the following:

Yeah I did this.  Duplex is fine.  1gb Full.

> 1) replace ethernet switch. If problem no longer exists, pitch the
> ethernet switch off the roof. The reason for this is that if you do not
> destroy the switch, someone else will use it again. Cheap people don't
> throw away broken stuff when they should.

Actually I did this too.  I replaced my 100mb switch with a 1gb
switch.  The next time it happens though I will see if the light on
the switch goes out, which I'm sure it does.

> 2) replace the cable. If the cable is subject to movement, or you record
> a ton of port errors when you lose connectivity, this may be an
> indicator of trouble.

I dont recall seeing errors on the port, but i will give replacing the
cable a shot.  It never hurts anyway.

> 3) write a script to ping a remote host known to be up. If the host
> doesn't respond, ifconfig the interface down and up. I have an extended
> version of this script that reboots a gateway on failure of remote
> connectivity. Saved my ass a few times when I munged the firewall rules
> remotely.

Yeah I have a perl script that kind of does this already.  If the
problem persists then Ill go this route.

> >  I would just reload the server but I have a very large LVM
> > partition attached across some USB drives that I am not sure if they
> > would be unharmed by the upgrade or not.
> RTFM on LVM. You can export a lot of filesystems these days, you can
> probably ask it to do an lvrescan or so to pick up any additional
> drives.

Yeah I will.  I have almost a TB of data on that LVM partition that I
would make me sob like a little school girl if I lost.  Just dont want
to risk losing it in any way if at all possible.

Thanks for the help here.

> --
> Kris Kirby, KE4AHR  <kris at catonic.us>
> But remember, with no superpowers comes no responsibility.
>                 --rly
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Nick Hudson
nick.hudson at gmail.com

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