From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fyodor Ustinov Subject: CRUSH again Date: Wed, 25 May 2011 15:17:57 +0300 Message-ID: <4DDCF375.7010109@ufm.su> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.ufm.su ([77.120.103.19]:37223 "EHLO mail.ufm.su" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756612Ab1EYMSA (ORCPT ); Wed, 25 May 2011 08:18:00 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.ufm.su (Postfix) with ESMTP id 7172E600484 for ; Wed, 25 May 2011 15:17:58 +0300 (EEST) Received: from mail.ufm.su ([127.0.0.1]) by localhost (mail.ufm.su [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id eLEXWVJQPqKb for ; Wed, 25 May 2011 15:17:58 +0300 (EEST) Received: from [192.168.2.22] (unknown [94.232.181.14]) by mail.ufm.su (Postfix) with ESMTPSA id 551DE600447 for ; Wed, 25 May 2011 15:17:58 +0300 (EEST) Sender: ceph-devel-owner@vger.kernel.org List-ID: To: ceph-devel@vger.kernel.org Hi! Again few questions. 1. What is the difference between "uniform | list | tree | straw" bucket type? 2. Replication chunk can not be placed on different devices on the same host and on different hosts on the same rack? Or only rack? Or only host? 3. What isthe difference between host and rack except nesting levels? WBR, Fyodor.