From owner-freebsd-hackers@FreeBSD.ORG Fri Feb 26 17:19:56 2010 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 381681065672 for ; Fri, 26 Feb 2010 17:19:56 +0000 (UTC) (envelope-from rysto32@gmail.com) Received: from mail-ew0-f226.google.com (mail-ew0-f226.google.com [209.85.219.226]) by mx1.freebsd.org (Postfix) with ESMTP id C11A18FC1B for ; Fri, 26 Feb 2010 17:19:55 +0000 (UTC) Received: by ewy26 with SMTP id 26so223615ewy.3 for ; Fri, 26 Feb 2010 09:19:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=G2PJ35xUq6N5GwTLsiQn+JJsYOQCHAy2AuT1V2Iudgw=; b=FcvcSzjsjYplpmlDdcxmmpnU0RvmC68CvvpSTwJVjbr+IuXcuZSoSvjxKcYS5cSCK8 dieyztVoReQ44fxnwJhYw0mXmOZAOPHlS/GxlMMVaZERuOYURvwdcuKYXSlRKP2gRJ45 4ltv/k6+Dbdwz+x1IXOZmEJffALukyGfN/5rA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=nC0i0JWhbFudhN4R3k806ZO/XesPWuZ+44gB7CWL8+0gev8cXjQuPi9WY2D0KZ2ILG k6ttWhKS5Xe3NVohDTYcdf7RpA98T1KvlZJS/uXoLT/aA5s8EUzBGagLfFEMw79Wnost QXLFBmlSNiiEeSIdfRHskKzpY/hl/8F8am9+k= MIME-Version: 1.0 Received: by 10.213.109.76 with SMTP id i12mr293708ebp.2.1267204791231; Fri, 26 Feb 2010 09:19:51 -0800 (PST) In-Reply-To: <7d6fde3d1002260300v36c420d4r79a18efe02c0d8ab@mail.gmail.com> References: <7d6fde3d1002252116k55a8e350s5dcc0846cba07785@mail.gmail.com> <7d6fde3d1002260300v36c420d4r79a18efe02c0d8ab@mail.gmail.com> Date: Fri, 26 Feb 2010 12:19:51 -0500 Message-ID: From: Ryan Stone To: Garrett Cooper Content-Type: text/plain; charset=ISO-8859-1 Cc: FreeBSD-Hackers Subject: Re: ddb and dump devices X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Feb 2010 17:19:56 -0000 It's a very simple custom protocol over UDP. You need a special server to listen for the netdump messages. Messing with something as complicated as NFS during a panic is going to increase the chances of a failure while trying to dump core.