Re: netconsole not working on 2.6.17.6

From: Matt Mackall
Date: Wed Oct 04 2006 - 12:07:49 EST


On Wed, Oct 04, 2006 at 01:26:54PM +0200, Benjamin Schindler wrote:
> On Tuesday 03 October 2006 18:37, you wrote:
> > Benjamin Schindler wrote:
> > > Hi
> > >
> > > I'm unsuccesfully trying to get networking to work - I've got two boxes
> that
> > > can ping each other: 192.168.0.101 and 192.168.0.102 - I load the
> netconsole
> > > module:
> > >
> > > modprobe netconsole
> > > netconsole=6666@xxxxxxxxxxxxx/eth0,6666@xxxxxxxxxxxxx/00:02:44:34:5d:f6
> > >
> > > In dmesg I get:
> > >
> > > netconsole: local port 6666
> > > netconsole: local IP 192.168.0.102
> > > netconsole: interface eth0
> > > netconsole: remote port 6666
> > > netconsole: remote IP 192.168.0.101
> > > netconsole: remote ethernet address 00:02:44:34:5d:f6
> > > netconsole: network logging started
> > >
> > > I start wireshark/tcpdump whatever - and load a few modules just to
> produce
> > > some kernel messages. However, noething leaves the wire but I get all the
> > > messages in dmesg.
> > >
> > > What's wrong here?
> > >
> > > Thanks
> > > Benjamin Schindler
> > >
> > > P.s. please cc me as I'm not subscribed to this list
> > >
> > Are you pointing to the correct MAC? Have you tried to compile the
> > netconsole as built-in?
> >
> Yes, I'm pointing at the correct MAC, but since wireshark doesn't see in the
> networl, I doubt anything actually is sent.
> No, I have not tried to compile netconsole into the kernel because of
> flexibility. Anyway, I have investiaged further:
> I ran this systemtap script:
>
> probe module("netconsole").function("write_msg@drivers/net/netconsole.c") {
> printf("WriteMsg called\b")
> }
>
> Once this script was run, I rmmod and modprobe'd my wireless-module a few
> times to generate some dmesg output, but according to systemtap, this
> function never gets called.
> So, either the call to register_console in netconsole fails, is wrong or there
> is a but in register_console

The usual problem is that the console log level is set too low.

--
Mathematics is the supreme nostalgia of our time.
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