From owner-freebsd-stable@FreeBSD.ORG Sun May 7 01:56:20 2006 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 43A6D16A400; Sun, 7 May 2006 01:56:20 +0000 (UTC) (envelope-from scottl@samsco.org) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2E41143D45; Sun, 7 May 2006 01:56:19 +0000 (GMT) (envelope-from scottl@samsco.org) Received: from [192.168.254.14] (imini.samsco.home [192.168.254.14]) (authenticated bits=0) by pooker.samsco.org (8.13.4/8.13.4) with ESMTP id k471uHmj072952; Sat, 6 May 2006 19:56:17 -0600 (MDT) (envelope-from scottl@samsco.org) Message-ID: <445D53C1.90601@samsco.org> Date: Sat, 06 May 2006 19:56:17 -0600 From: Scott Long User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.7) Gecko/20050416 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Robert Watson References: <4457A02C.9040408@rogers.com> <35c231bf0605032011s65fbb1aby742438465ee98ee7@mail.gmail.com> <20060504033300.GA39935@xor.obsecurity.org> <44598615.3040400@rogers.com> <20060504044758.GA41047@xor.obsecurity.org> <44599732.1050905@rogers.com> <20060505080543.GD5466@garage.freebsd.pl> <35c231bf0605051049t2761281ar97b9634b8279b1fd@mail.gmail.com> <445B991F.3050600@rogers.com> <6.2.3.4.0.20060505145259.10d8dca0@64.7.153.2> <3aaaa3a0605061238ib77bb38x6f61eb6cc1c1c6c1@mail.gmail.com> <20060506204720.S46997@fledge.watson.org> In-Reply-To: <20060506204720.S46997@fledge.watson.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.4 required=3.8 tests=ALL_TRUSTED autolearn=failed version=3.1.1 X-Spam-Checker-Version: SpamAssassin 3.1.1 (2006-03-10) on pooker.samsco.org Cc: Chris , Mike Jakubik , stable@freebsd.org Subject: Re: quota deadlock on 6.1-RC1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 07 May 2006 01:56:20 -0000 Robert Watson wrote: > > On Sat, 6 May 2006, Chris wrote: > >> are snapshots a default setting? > > > In case people want to avoid using snapshots, here are the uses I'm > currently aware of in the base system: > > - Background file system check uses snapshots. This can be disabled by > using > background_fsck="NO" in /etc/rc.conf. > > - dump uses snapshots if the -L paramater is specified, in order to take an > atomic backup of the system. It won't use snapshots unless explicitly > specified. > > - mksnap_ffs uses snapshots, as it's the operator snapshot creation tool. > > FWIW, I and a moderate number of other people use snapshots daily on > quite busy and over-burdened machines without problems. > > Also, as an FYI, several quota-related snapshot fixes went into CVS in > the last 24-48 hours. Once they've settled for a few weeks, and > assuming they don't have complex dependencies, they will get merged to > RELENG_6. Presumably if there is sufficient demand, and they adequately > address the reports of deadlocks with quotas+snapshots, they could be > merged to RELENG_6_1 as an errata update. Exactly my thinking also. In about 2-3 weeks time, we'll review this and decide what to do. Scott