From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: os recommendations Date: Tue, 26 Nov 2013 06:22:43 -0800 Message-ID: <20131126142243.GA7360@infradead.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from bombadil.infradead.org ([198.137.202.9]:39955 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756947Ab3KZOWn (ORCPT ); Tue, 26 Nov 2013 09:22:43 -0500 Content-Disposition: inline In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Dominik Mostowiec Cc: ceph-devel , "ceph-users@lists.ceph.com" On Tue, Nov 26, 2013 at 11:43:07AM +0100, Dominik Mostowiec wrote: > Hi, > I found in doc: http://ceph.com/docs/master/start/os-recommendations/ > "Putting multiple ceph-osd daemons using XFS or ext4 on the same host > will not perform as well as they could." > > For now recommended filesystem is XFS. > This means that for the best performance setup should be 1 OSD per host? Btw, could anyone clarify where that stance comes from, that is numbers to back it up.