From owner-freebsd-current@FreeBSD.ORG Wed May 24 20:35:08 2006 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9D1B316A507 for ; Wed, 24 May 2006 20:35:08 +0000 (UTC) (envelope-from keramida@ceid.upatras.gr) Received: from igloo.linux.gr (igloo.linux.gr [62.1.205.36]) by mx1.FreeBSD.org (Postfix) with ESMTP id 927DD43D46 for ; Wed, 24 May 2006 20:35:06 +0000 (GMT) (envelope-from keramida@ceid.upatras.gr) Received: from gothmog.pc (host5.bedc.ondsl.gr [62.103.39.229]) (authenticated bits=128) by igloo.linux.gr (8.13.6/8.13.6/Debian-1) with ESMTP id k4OKYYco008600 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 24 May 2006 23:34:35 +0300 Received: from gothmog.pc (gothmog [127.0.0.1]) by gothmog.pc (8.13.6/8.13.6) with ESMTP id k4OKakAk013638; Wed, 24 May 2006 23:36:46 +0300 (EEST) (envelope-from keramida@ceid.upatras.gr) Received: (from giorgos@localhost) by gothmog.pc (8.13.6/8.13.6/Submit) id k4OKajtP013637; Wed, 24 May 2006 23:36:45 +0300 (EEST) (envelope-from keramida@ceid.upatras.gr) Date: Wed, 24 May 2006 23:36:45 +0300 From: Giorgos Keramidas To: Kris Kennaway Message-ID: <20060524203645.GB13500@gothmog.pc> References: <20060522211223.GA3621@xor.obsecurity.org> <20060522231437.GC1446@odin.ac.hmc.edu> <20060523133037.GA2908@gothmog.pc> <20060523143013.GA11472@ci0.org> <20060523194106.GA46634@xor.obsecurity.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060523194106.GA46634@xor.obsecurity.org> X-Hellug-MailScanner: Found to be clean X-Hellug-MailScanner-SpamCheck: not spam, SpamAssassin (score=-3.405, required 5, autolearn=not spam, ALL_TRUSTED -1.80, AWL 0.79, BAYES_00 -2.60, DNS_FROM_RFC_ABUSE 0.20) X-Hellug-MailScanner-From: keramida@ceid.upatras.gr X-Spam-Status: No Cc: current@freebsd.org Subject: Re: md /tmp and async mounts X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 May 2006 20:35:12 -0000 On 2006-05-23 15:41, Kris Kennaway wrote: > You are confusing mdconfig's -o async mode, used only for vnode > backing (not the case here anyway): > > [no]async > For vnode backed devices: avoid IO_SYNC for increased > performance but at the risk of deadlocking the entire > kernel. > > with mount's -o async mode, used at the filesystem layer on any > device. The latter does not have deadlocks. Hi Kris, so we can safely add async to `tmpmfs_flags' in /etc/defaults/rc.conf? If that is so, do you want me to make the change, or do you want to do this?