Re: nfs4 client bug

[Jesper Juhl]

On 9/5/05, Bret Towe <magnade@xxxxxxxxx> wrote:
> On 9/4/05, J. Bruce Fields <bfields@xxxxxxxxxxxx> wrote:
> > On Sun, Sep 04, 2005 at 08:08:22PM -0700, Bret Towe wrote:
> > > On 9/4/05, J. Bruce Fields <bfields@xxxxxxxxxxxx> wrote:
> > > > Do you get anything from alt-sysrq-T?
> > >
> > > no i havent used that im usally in x when its freezing
> > > x wont even switch to console would it still give me anything then?
> >
> > Well, you can try something like:
> >         alt-sysrq-T
> > wait a couple seconds, then
> >         alt-sysrq-S
> >         alt-sysrq-U
> >         alt-sysrq-B
> > with maybe a second between each to give stuff a chance to get to disk.
> >
> > Then if you're lucky you may find the stack dumps in your log after you
> > reboot.
> 
> tried it and so far no luck ill keep trying a few more times and see
> if i can get it
> to spit somethin out to disk but i dont think ill be that lucky as that would
> prob make life to easy wouldnt it?

How about 

serial console over a cross-over cable to a second box.
netconsole will let you put the console on a different box over the network.
console on line printer will let you have a permanent record of the
console output on paper.

See
 Documentation/serial-console.txt
 Documentation/networking/netconsole.txt
 the help entry for "config LP_CONSOLE" (in drivers/char/Kconfig)

Would any of those perhaps help you in capturing anything ?

-- 
Jesper Juhl <jesper.juhl@xxxxxxxxx>
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