From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from tansi.org (ns.km10532-04.keymachine.de [87.118.102.195]) by mail.saout.de (Postfix) with ESMTP for ; Sun, 22 Aug 2010 23:51:43 +0200 (CEST) Received: from gatewagner.dyndns.org (84-74-164-239.dclient.hispeed.ch [84.74.164.239]) by tansi.org (Postfix) with ESMTPA id 43DB6121832B for ; Sun, 22 Aug 2010 23:51:43 +0200 (CEST) Date: Sun, 22 Aug 2010 23:51:42 +0200 From: Arno Wagner Message-ID: <20100822215142.GA16551@tansi.org> References: <20100817184635.GA17921@tansi.org> <4C6BC751.10506@redhat.com> <20100818141208.GB1847@tansi.org> <4C6BF27C.1050305@redhat.com> <20100818154419.GA3349@tansi.org> <20100822195259.GA13530@tansi.org> <1282513364.3227.16.camel@fermat.scientia.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1282513364.3227.16.camel@fermat.scientia.net> Subject: Re: [dm-crypt] dm-crypt flush-to-disk freezes List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dm-crypt@saout.de On Sun, Aug 22, 2010 at 11:42:44PM +0200, Christoph Anton Mitterer wrote: > On Sun, 2010-08-22 at 21:52 +0200, Arno Wagner wrote: > > What do I lose with barriers off? > data security ;) > > > In case of the filesystem barriers (not the IO barriers, which are > different AFAIK) they're used to make sure, that the COMMITS in the > journal are written after the journal is correctly flushed out. If that means I am back to ext2 safety levels, then I can live with that. Arno -- Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@wagner.name GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F ---- Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans If it's in the news, don't worry about it. The very definition of "news" is "something that hardly ever happens." -- Bruce Schneier