From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc MERLIN Subject: Re: md raid5 on top of dmcrypt, or dmcrypt on top of md raid5? Date: Sun, 21 Feb 2016 16:44:36 -0800 Message-ID: <20160222004436.GH5512@merlins.org> References: <20160211162959.GG13969@merlins.org> <20160212190700.GQ13969@merlins.org> <22206.14606.181359.676881@quad.stoffel.home> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <22206.14606.181359.676881@quad.stoffel.home> Sender: linux-raid-owner@vger.kernel.org To: John Stoffel Cc: Jes Sorensen , Mikael Abrahamsson , linux-raid@vger.kernel.org List-Id: linux-raid.ids On Fri, Feb 12, 2016 at 02:57:02PM -0500, John Stoffel wrote: > > Marc, > > Did you look into lvcache instead of bcache? The problem with bcache > is that you can't (as I understand it) remove it from a live volume, > while you can with lvache. I've used LVM2 in the past, and I'm not a big fan of the extra layers (and back then clear slowdowns). To be honest, I won't be needing to remove a cache from a volume while it's running, so that's not too much a concern for me. I did a bit of reading on one vs the other, and dmcache seemed to have more users behind it and been around longer, so I went with that. Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/ | PGP 1024R/763BE901