From owner-freebsd-stable@FreeBSD.ORG Sun Mar 25 13:37:47 2007 Return-Path: X-Original-To: freebsd-stable@FreeBSD.ORG Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 6DC3616A400 for ; Sun, 25 Mar 2007 13:37:47 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (lurza.secnetix.de [83.120.8.8]) by mx1.freebsd.org (Postfix) with ESMTP id EEF8613C44B for ; Sun, 25 Mar 2007 13:37:46 +0000 (UTC) (envelope-from olli@lurza.secnetix.de) Received: from lurza.secnetix.de (nunefe@localhost [127.0.0.1]) by lurza.secnetix.de (8.13.4/8.13.4) with ESMTP id l2PDbdqF040288 for ; Sun, 25 Mar 2007 15:37:45 +0200 (CEST) (envelope-from oliver.fromme@secnetix.de) Received: (from olli@localhost) by lurza.secnetix.de (8.13.4/8.13.1/Submit) id l2PDbdY2040287; Sun, 25 Mar 2007 15:37:39 +0200 (CEST) (envelope-from olli) Date: Sun, 25 Mar 2007 15:37:39 +0200 (CEST) Message-Id: <200703251337.l2PDbdY2040287@lurza.secnetix.de> From: Oliver Fromme To: freebsd-stable@FreeBSD.ORG X-Newsgroups: list.freebsd-stable User-Agent: tin/1.8.2-20060425 ("Shillay") (UNIX) (FreeBSD/4.11-STABLE (i386)) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.1.2 (lurza.secnetix.de [127.0.0.1]); Sun, 25 Mar 2007 15:37:45 +0200 (CEST) Cc: Subject: options VFS_AIO vs. qemu vs. shell accounts X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-stable@FreeBSD.ORG List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Mar 2007 13:37:47 -0000 Hi, sys/conf/NOTES contains this comment in RELENG_6 (for as long as the AIO option exists, which is more than 7 years): # Use real implementations of the aio_* system calls. There are numerous # stability and security issues in the current aio code that make it # unsuitable for inclusion on machines with untrusted local users. options VFS_AIO Does that warning about stability and security issues still apply on RELENG_6? If it does, is somebody working on a fix for that? The problem is that recent versions of qemu seem to require AIO (for IDE DMA). Given the above comment, it seems to be impossible to use qemu on machines with shell accounts. Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "Being really good at C++ is like being really good at using rocks to sharpen sticks." -- Thant Tessman