From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from v4.tansi.org (ns.km33513-03.keymachine.de [87.118.94.3]) by mail.saout.de (Postfix) with ESMTP for ; Thu, 17 Mar 2011 16:03:05 +0100 (CET) Received: from gatewagner.dyndns.org (84-74-164-239.dclient.hispeed.ch [84.74.164.239]) by v4.tansi.org (Postfix) with ESMTPA id D5E532052AE for ; Thu, 17 Mar 2011 16:03:04 +0100 (CET) Date: Thu, 17 Mar 2011 16:03:04 +0100 From: Arno Wagner Message-ID: <20110317150303.GA4997@tansi.org> References: <20110317152918.e7bfac44.taeuber@bbaw.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110317152918.e7bfac44.taeuber@bbaw.de> Subject: Re: [dm-crypt] HDD sector size interrelated with dm-crypt? List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dm-crypt@saout.de Should not matter. Also a speed increase is unlikely, disks are still dog-slow compared to things the CPU does, like encrypting sectors. They are not written/read individually anyways in most cases. Arno On Thu, Mar 17, 2011 at 03:29:18PM +0100, Lars T??uber wrote: > Hi there, > > does dm-crypt depend in any way on the sector size of the block device to be encrypted? > So the real question is: Does dm-crypt work as expected on a 4KiB sector sized SATA drive when there is no translation to 512B sector size? Are there options that must be taken then? > > I've read somewhere that the encryption algorithm work with 512B block sizes. > Could this be changed to 4KiB block sizes to gain speed with the upcoming devices? > > Thanks > Lars > _______________________________________________ > dm-crypt mailing list > dm-crypt@saout.de > http://www.saout.de/mailman/listinfo/dm-crypt > -- 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