From owner-freebsd-current@FreeBSD.ORG Thu Aug 26 02:11:34 2004 Return-Path: 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 92C5D16A4CE for ; Thu, 26 Aug 2004 02:11:34 +0000 (GMT) Received: from smtp006.bizmail.sc5.yahoo.com (smtp006.bizmail.sc5.yahoo.com [66.163.175.83]) by mx1.FreeBSD.org (Postfix) with SMTP id 7663543D45 for ; Thu, 26 Aug 2004 02:11:34 +0000 (GMT) (envelope-from noackjr@alumni.rice.edu) Received: from unknown (HELO optimator.noacks.org) (noackjr@supercrime.org@70.240.199.245 with login) by smtp006.bizmail.sc5.yahoo.com with SMTP; 26 Aug 2004 02:11:34 -0000 Received: from localhost (localhost [127.0.0.1]) by optimator.noacks.org (Postfix) with ESMTP id 2B87D61B7; Wed, 25 Aug 2004 21:11:33 -0500 (CDT) Received: from optimator.noacks.org ([127.0.0.1]) by localhost (optimator.noacks.org [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 73638-02; Wed, 25 Aug 2004 21:11:32 -0500 (CDT) Received: from compgeek.noacks.org (compgeek [192.168.1.10]) by optimator.noacks.org (Postfix) with ESMTP id 393FD6193; Wed, 25 Aug 2004 21:11:32 -0500 (CDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by compgeek.noacks.org (8.13.1/8.13.1) with ESMTP id i7Q2BV65054299; Wed, 25 Aug 2004 21:11:31 -0500 (CDT) (envelope-from noackjr@alumni.rice.edu) Message-ID: <412D46D3.9010900@alumni.rice.edu> Date: Wed, 25 Aug 2004 21:11:31 -0500 From: Jon Noack User-Agent: Mozilla Thunderbird 0.7.3 (X11/20040806) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Don Lewis References: <200408251832.i7PIVus1004715@gw.catspoiler.org> In-Reply-To: <200408251832.i7PIVus1004715@gw.catspoiler.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: by amavisd-new at noacks.org cc: freebsd-current@FreeBSD.org cc: bettan@nerim.net Subject: Re: reboot on freebsd 5.3-beta1 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: noackjr@alumni.rice.edu List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Aug 2004 02:11:34 -0000 On 08/25/04 13:31, Don Lewis wrote: > On 25 Aug, bettan wrote: >> When i reboot , i have Syncing disk , vnodes remaining and numbers >> but it isn't quickly and i don't umount my files systems before the >> reboot. > > It should print a number once per second. The numbers should quickly > decrease to something in the low single digits. It is not unusual to see > the number decrease to zero and then bounce back up a couple of times. > Spending about 10 seconds or so at this stage is not unexpected. This is a relatively recent change in behavior to workaround the fact that IDE/ATA controllers/drives report that they have successfully written data before they actually perform the write. With the old quick sync, people were experiencing corruption and data loss when rebooting. The new behavior is much more conservative and is designed to minimize risk. That was all off the top of my head so someone please correct me if I remembered wrong. Jon