Subject: Re: how to crash a diskless client (i386)
To: None <firstname.lastname@example.org>
From: Manuel Bouyer <email@example.com>
Date: 05/09/1999 20:49:39
On Fri, May 07, 1999 at 04:48:58PM +0200, firstname.lastname@example.org wrote:
> I'm experimenting with a diskless setup and found that there's a
> really easy way to crash the client (amd486DX4/100, 3c509, Quantum
> TRB850A running netbsd-current)(*): just do a
> dd if=/dev/rwd0d of=/dev/null bs=64k
> and the deed is done! :-/
> ok, that box's not completely diskless: I use the disk of this thing
> to get the netboot code from and for /var and swap. the kernel is
> loaded from an ss20 (running netbsd-current, of course), which holds
> the root and user filesystems for my client, too.
> a backtrace on the client looks like this:
> --- trap (number 4) ---
> --- interrupt ---
> --- syscall (number 3) ---
Did it panic ? If so, what's the panic message ?
> on the server I see the following line in /var/log/messages:
> May 7 15:27:49 dino /netbsd: nfsd send error 64
This is "EHOSTDOWN", which means that your client didn't anserw ARP requests.
Quite possible if is was crashed :)
Manuel Bouyer <email@example.com>