From owner-freebsd-current@FreeBSD.ORG Fri Mar 25 20:14:47 2011 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EA1C6106566B; Fri, 25 Mar 2011 20:14:46 +0000 (UTC) (envelope-from alexander@leidinger.net) Received: from mail.ebusiness-leidinger.de (mail.ebusiness-leidinger.de [217.11.53.44]) by mx1.freebsd.org (Postfix) with ESMTP id 593958FC1B; Fri, 25 Mar 2011 20:14:46 +0000 (UTC) Received: from outgoing.leidinger.net (p5B1553A9.dip.t-dialin.net [91.21.83.169]) by mail.ebusiness-leidinger.de (Postfix) with ESMTPSA id DAB80844017; Fri, 25 Mar 2011 21:14:41 +0100 (CET) Received: from unknown (IO.Leidinger.net [192.168.2.110]) by outgoing.leidinger.net (Postfix) with ESMTP id 0121614A9; Fri, 25 Mar 2011 21:14:38 +0100 (CET) Date: Fri, 25 Mar 2011 21:14:39 +0100 From: Alexander Leidinger To: gahr@freebsd.org Message-ID: <20110325211439.00004dda@unknown> In-Reply-To: <20110325153520.GB23861@gahrfit.gahr.ch> References: <20110325101111.GA36840@azathoth.lan> <20110325150653.21132ej6abxmjpgk@webmail.leidinger.net> <20110325153814.20287h1594npcu80@webmail.leidinger.net> <20110325153520.GB23861@gahrfit.gahr.ch> X-Mailer: Claws Mail 3.7.8cvs47 (GTK+ 2.16.6; i586-pc-mingw32msvc) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-EBL-MailScanner-Information: Please contact the ISP for more information X-EBL-MailScanner-ID: DAB80844017.A081C X-EBL-MailScanner: Found to be clean X-EBL-MailScanner-SpamCheck: not spam, spamhaus-ZEN, SpamAssassin (not cached, score=-0.846, required 6, autolearn=disabled, ALL_TRUSTED -1.00, TW_KG 0.08, TW_ZF 0.08) X-EBL-MailScanner-From: alexander@leidinger.net X-EBL-MailScanner-Watermark: 1301688882.63594@6X9bXvURTkigw9HJYLbInA X-EBL-Spam-Status: No Cc: Baptiste, current@freebsd.org, Julien Laffaye , Daroussin , ports@freebsd.org, hackers@freebsd.org Subject: Re: [ECFT] pkgng 0.1-alpha1: a replacement for pkg_install 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: Fri, 25 Mar 2011 20:14:47 -0000 On Fri, 25 Mar 2011 16:35:21 +0100 Pietro Cerutti wrote: > On 2011-Mar-25, 15:03, Julien Laffaye wrote: > > >>> What about DB corruption/loss? Do you keep > > >>> the /var/db/pkg//xxx files even with pkgng and only > > >>> use the DB as a way to speed up some work (so > > >>> the DB corruption just requires to run pkg2ng), or are you lost > > >>> of the DB is > > >>> lost? > > >>> > > >> > > >> Nothing is done about DB corruption/loss, I am not sure we need > > >> to do something. > > >> Maybe. > > > > > > I would say "for sure". Info: In Solaris 10 sqlite is used for > > > the service managenemt framework (SMF). It is possible that the > > > DB is corrupt in some bad situations. In this case you have to > > > rebuild the DB (script provided, been there, had to use it). > > > > If sqlite is properly used with transactions, it is very hard to > > corrupt the database. But if hardware lies to us and say that the And as I told above, I even had such a case (more than once), and the hardware was not buggy. What do you want to tell in this case, "life sucks, reinstall everything"? > > data is on disk whereas it isnt... what can we do? Sometimes you have to stay with broken hardware. > > Another potential problem is fsync(), but if it is broken on FreeBSD > > we want to fix it! > > > > BTW, the goal is to only have the database and not the flat files. > > If you are paranoid about power outage, use something like zfs > > snapshots... There are more FS than only ZFS (personally I use ZFS, and I have snapshots, but this is not a good solution for this problem). As I told already, if it isn't automatic, nearly nobody will use it. And the package management stuff has to be automatic, no freshman will think about setting up a snapshot script when he starts to use packages/ports. > No need to look for strange scenarios, I'm surely going to sudo rm -f > the file more sooner than later, so... maybe just save a copy? A copy or two would be enough, but it has to be done automatically, and once a day is not enough. A copy after each X modifications maybe (for suitable definitions of X and 'modifications'). Bye, Alexander.